Patent Publication Number: US-2023141883-A1

Title: Image capturing system lens assembly, imaging apparatus and electronic device

Description:
RELATED APPLICATIONS 
     This application claims priority to Taiwan Application Serial Number 110141420, filed Nov. 5, 2021, which is herein incorporated by reference. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to an image capturing system lens assembly and an imaging apparatus. More particularly, the present disclosure relates to an image capturing system lens assembly and an imaging apparatus with compact size applicable to electronic devices. 
     Description of Related Art 
     With recent technology of semiconductor process advances, performances of image sensors are enhanced, so that the smaller pixel size can be achieved. Therefore, optical lens assemblies with high image quality have become an indispensable part of many modern electronics. With rapid developments of technology, applications of electronic devices equipped with optical lens assemblies increase and there is a wide variety of requirements for optical lens assemblies. However, in a conventional optical lens assembly, it is hard to balance among image quality, sensitivity, aperture size, volume or field of view. Thus, there is a demand for an image capturing system lens assembly that meets the aforementioned needs. 
     SUMMARY 
     According to one aspect of the present disclosure, an image capturing system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element has positive refractive power. At least one of the object-side surface and the image-side surface of at least one of the first lens element to the fifth lens element includes at least one inflection point. The image capturing system lens assembly further includes an aperture stop. When an axial distance between the aperture stop and an image surface is SL, an axial distance between the object-side surface of the first lens element and the image surface is TL, a focal length of the image capturing system lens assembly is f, a composite focal length of the third lens element and the fourth lens element is f34, a composite focal length of the fourth lens element and the fifth lens element is f45, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a curvature radius of the object-side surface of the second lens element is R3, a curvature radius of the image-side surface of the second lens element is R4, a curvature radius of the object-side surface of the third lens element is R5, a curvature radius of the image-side surface of the third lens element is R6, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and a central thickness of the fifth lens element is CT5, the following conditions are satisfied: 0.76&lt;SL/TL&lt;1.50; 0.82&lt;T12/f&lt;1.38; −1.05&lt;(R3+R4)/(R3−R4)&lt;0.70; −3.50&lt;(R5+R6)/(R5−R6)&lt;3.00; −2.50&lt;f/f45&lt;0.88; −5.00&lt;f34/f45&lt;3.60; and 0.30&lt;(CT2+T23+CT3+T34+CT4+T45+CT5)/f&lt;2.02. 
     According to one aspect of the present disclosure, an image capturing system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element has positive refractive power. At least one of the object-side surface and the image-side surface of at least one of the first lens element to the fifth len&#39;s element includes at least one inflection point. The image capturing system lens assembly further includes an aperture stop. When an axial distance between the aperture stop and an image surface is SL, an axial distance between the object-side surface of the first lens element and the image surface is TL, a focal length of the image capturing system lens assembly is f, a composite focal length of the first lens element and the second lens element is f12, a composite focal length of the first lens element, the second lens element and the third lens element is f123, a composite focal length of the second lens element, the third lens element and the fourth lens element is f234, an axial distance between the first lens element and the second lens element is T12, a curvature radius of the object-side surface of the third lens element is R5, a curvature radius of the image-side surface of the third lens element is R6, and a maximum image height of the image capturing system lens assembly is ImgH, the following conditions are satisfied: 0.74&lt;SL/TL&lt;1.05; 0.80&lt;T12/f&lt;1.40; −2.70&lt;(R5+R6)/(R5−R6)&lt;2.70; 0.40&lt;f/f12&lt;2.00; −0.40&lt;f123/f234&lt;1.85; and 0.80&lt;f/ImgH&lt;2.25. 
     According to one aspect of the present disclosure, an image capturing system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element has positive refractive power. At least one of the object-side surface and the image-side surface of at least one of the first lens element to the fifth lens element includes at least one inflection point. The image capturing system lens assembly further includes an aperture stop. When an axial distance between the aperture stop and an image surface is SL, an axial distance between the object-side surface of the first lens element and the image surface is TL, a focal length of the image capturing system lens assembly is f, a composite focal length of the third lens element and the fourth lens element is f34, a composite focal length of the fourth lens element and the fifth lens element is f45, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a maximum image height of the image capturing system lens assembly is ImgH, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and a central thickness of the fifth lens element is CT5, the following conditions are satisfied: 0.74&lt;T12/f&lt;1.40; 0.74&lt;SL/TL&lt;1.50; −2.50&lt;f/f45&lt;1.04; −8.00&lt;f34/f45&lt;2.02; 0.80&lt;f/ImgH&lt;1.45; and 0.30&lt;(CT2+T23+CT3+T34+CT4+T45+CT5)/f&lt;3.40. 
     According to one aspect of the present disclosure, an imaging apparatus includes the image capturing system lens assembly of the aforementioned aspect and an image sensor, wherein the image sensor is disposed on the image surface of the image capturing system lens assembly. 
     According to one aspect of the present disclosure, an electronic device includes the imaging apparatus of the aforementioned aspect. 
     According to one aspect of the present disclosure, an image capturing system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. At least one of the object-side surface and the image-side surface of at least one of the first lens element to the fifth lens element includes at least one inflection point; at least one of the first lens element to the fifth lens element is made of plastic material and has the object-side surface and the image-side surface being both aspheric. The image capturing system lens assembly further includes an aperture stop. When an axial distance between the aperture stop and an image surface is SL, an axial distance between the object-side surface of the first lens element and the image surface is TL, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a maximum among T12, T23, T34, T45 is ATmax, an axial distance between the image-side surface of the fifth lens element and the image surface is BL, a focal length of the image capturing system lens assembly is f, a focal length of the second lens element is f2, a focal length of the third lens element is f3, and a curvature radius of the object-side surface of the first lens element is R1, the following conditions are satisfied: 0.75&lt;SL/TL&lt;1.50; 0.78&lt;ATmax/f&lt;9.00; 1.50&lt;ATmax/BL&lt;7.00; 1.00&lt;&lt;5.00; −5.00&lt;f/R1&lt;0.45; −0.60&lt;f/f2&lt;3.00; and −2.00&lt;f/f3&lt;0.85. 
     According to one aspect of the present disclosure, an imaging apparatus includes the image capturing system lens assembly of the aforementioned aspect and an image sensor, wherein the image sensor is disposed on the image surface of the image capturing system lens assembly. 
     According to one aspect of the present disclosure, an electronic device includes the imaging apparatus of the aforementioned aspect. 
     According to one aspect of the present disclosure, an image capturing system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. At least one of the object-side surface and the image-side surface of at least one of the first lens element to the fifth lens element includes at least one inflection point. The image capturing system lens assembly further includes an aperture stop. When an axial distance between the aperture stop and an image surface is SL, an axial distance between the object-side surface of the first lens element and the image surface is TL, an axial distance between the first lens element and the second lens element is 112, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a maximum among T12, T23, T34, T45 is ATmax, an axial distance between the image-side surface of the fifth lens element and the image surface is BL, a focal length of the image capturing system lens assembly is f, and a focal length of the second lens element is f2, the following conditions are satisfied: 0.75&lt;SL/TL&lt;1.50; 0.78&lt;ATmax/f&lt;9.00; 2.00&lt;ATmax/BL&lt;7.00; 2.60&lt;TL/f&lt;5.00; 0&lt;T45/f&lt;0.90; and −0.60&lt;f/f2&lt;3.00. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present disclosure can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows: 
         FIG.  1 A  is a schematic view of an imaging apparatus according to the 1st embodiment of the present disclosure. 
         FIG.  1 B  is a schematic view of the imaging apparatus with another reflective element according to the 1st embodiment of the present disclosure. 
         FIG.  2    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 1st embodiment. 
         FIG.  3 A  is a schematic view of an imaging apparatus according to the 2nd embodiment of the present disclosure. 
         FIG.  3 B  is a schematic view of the imaging apparatus with another reflective element according to the 2nd embodiment of the present disclosure. 
         FIG.  4    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 2nd embodiment. 
         FIG.  5 A  is a schematic view of an imaging apparatus according to the 3rd embodiment of the present disclosure. 
         FIG.  5 B , which is a schematic view of the imaging apparatus with another reflective element according to the 3rd embodiment of the present disclosure. 
         FIG.  6    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 3rd embodiment. 
         FIG.  7 A  is a schematic view of an imaging apparatus according to the 4th embodiment of the present disclosure. 
         FIG.  7 B  is a schematic view of the imaging apparatus with another reflective element according to the 4th embodiment of the present disclosure. 
         FIG.  8    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 4th embodiment. 
         FIG.  9 A  is a schematic view of an imaging apparatus according to the 5th embodiment of the present disclosure. 
         FIG.  9 B  is a schematic view of the imaging apparatus with another reflective element according to the 5th embodiment of the present disclosure. 
         FIG.  10    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 5th embodiment. 
         FIG.  11 A  is a schematic view of an imaging apparatus according to the 6th embodiment of the present disclosure. 
         FIG.  11 B  is a schematic view of the imaging apparatus with another reflective element according to the 6th embodiment of the present disclosure. 
         FIG.  12    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 6th embodiment. 
         FIG.  13 A  is a schematic view of an imaging apparatus according to the 7th embodiment of the present disclosure. 
         FIG.  13 B  is a schematic view of the imaging apparatus with another reflective element according to the 7th embodiment of the present disclosure. 
         FIG.  14    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 7th embodiment. 
         FIG.  15 A  is a schematic view of an imaging apparatus according to the 8th embodiment of the present disclosure. 
         FIG.  15 B  is a schematic view of the imaging apparatus with another reflective element according to the 8th embodiment of the present disclosure. 
         FIG.  16    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 8th embodiment. 
         FIG.  17 A  is a schematic view of an imaging apparatus according to the 9th embodiment of the present disclosure. 
         FIG.  17 B  is a schematic view of the imaging apparatus with another reflective element according to the 9th embodiment of the present disclosure. 
         FIG.  18    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 9th embodiment. 
         FIG.  19 A  is a schematic view of an imaging apparatus according to the 10th embodiment of the present disclosure. 
         FIG.  19 B  is a schematic view of the imaging apparatus with another reflective element according to the 10th embodiment of the present disclosure. 
         FIG.  20    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 10th embodiment. 
         FIG.  21 A  is a schematic view of an imaging apparatus according to the 11th embodiment of the present disclosure. 
         FIG.  21 B  is a schematic view of the imaging apparatus with another reflective element according to the 11th embodiment of the present disclosure. 
         FIG.  22    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus according to the 11th embodiment. 
         FIG.  23 A  is a schematic view of partial parameters, the inflection points of each lens element and the critical points according to the 1st embodiment of  FIG.  1 A . 
         FIG.  23 B  is a schematic view of partial parameters, the inflection points of each lens element and the critical points according to the 1st embodiment of  FIG.  1 B . 
         FIG.  24    is a schematic view of partial parameters according to the 1st embodiment. 
         FIG.  25 A  is a schematic view of the imaging apparatus according to the 1st embodiment of  FIG.  1 A  which is arranged with lens barrels. 
         FIG.  25 B  is a schematic view of the imaging apparatus according to the 1st embodiment of  FIG.  1 B  which is arranged with lens barrels. 
         FIG.  26    is a schematic view of an imaging apparatus according to the 12th embodiment of the present disclosure. 
         FIG.  27 A  is a schematic view of one side of an electronic device according to the 13th embodiment of the present disclosure. 
         FIG.  27 B  is a schematic view of another side of the electronic device of  FIG.  27 A . 
         FIG.  27 C  is a system schematic view of the electronic device of  FIG.  27 A . 
         FIG.  28    is a schematic view of one side of an electronic device according to the 14th embodiment of the present disclosure. 
         FIG.  29    is a schematic view of one side of an electronic device according to the 15th embodiment of the present disclosure. 
         FIG.  30 A  is a schematic view of one side of an electronic device according to the 16th embodiment of the present disclosure. 
         FIG.  30 B  is a schematic view of another side of the electronic device according to the 16th embodiment of  FIG.  30 A . 
         FIG.  31 A  is a schematic view of an arrangement of a light path folding element in the image capturing system lens assembly of the present disclosure. 
         FIG.  31 B  is a schematic view of another arrangement of the light path folding element in the image capturing system lens assembly of the present disclosure. 
         FIG.  31 C  is a schematic view of an arrangement of two light path folding elements in the image capturing system lens assembly of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure provides an image capturing system lens assembly, which includes five lens elements. The five lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. There can be an air gap between each of adjacent lens elements of the five lens elements. Therefore, the contact between adjacent lens elements can be avoided, so that the manufacture of lens elements and the difficulty of assembling can be reduced so as to increase the yield rate. 
     The object-side surface of the first lens element can be concave in a paraxial region thereof, which is favorable for enlarging field of view and reducing the effective radius of the first lens element. 
     The second lens element can have positive refractive power, so that it is favorable for reducing the effective radius of the image capturing system lens assembly by cooperating with the first lens element. The object-side surface of the second lens element can be convex in a paraxial region thereof, so that it is favorable for correcting aberrations by adjusting the surface shape and refractive power of the second lens element. The image-side surface of the second lens element can be convex in a paraxial region thereof, so that it is favorable for enhancing the image quality in the central area by cooperating with the surface shape of the third lens element. 
     The third lens element can have negative refractive power, which is favorable for correcting aberrations, such as spherical aberrations etc. by cooperating with the fourth lens element. 
     The image-side surface of the fourth lens element can be convex in a paraxial region thereof, which is favorable for enhancing light converging quality in the paraxial region of the image capturing system lens assembly. 
     The image-side surface of the fifth lens element is concave in a paraxial region thereof, so that it is favorable for reducing the total track length of the image capturing system lens assembly by adjusting the back focal length thereof. Further, the image-side surface of the fifth lens element can include at least one critical point. Therefore, it is favorable for correcting the distortion of the peripheral field. 
     At least one of the object-side surface and the image-side surface of at least one of the first lens element to the fifth lens element includes at least one inflection point. Therefore, it is favorable for enlarging the size of the image surface and reducing field curvature. 
     At least one of the first lens element to the fifth lens element can be made of plastic material and can have the object-side surface and the image-side surface being both aspheric. Therefore, it is favorable for reducing the manufacturing cost and enhancing the image quality of the peripheral field. 
     The first lens element belongs to a front lens group, the second lens element, the third lens element, the fourth lens element and the fifth lens element belong to a rear lens group, there is a relative displacement between the rear lens group and the front lens group. Therefore, the focusing position can be more ideal during capturing the image with different object distances so as to enhance the image quality. In detailed, the displacing way of the rear lens group can be the displacement parallel to the optical axis, the displacement perpendicular with the optical axis, rotation etc., and the present disclosure will not be limited thereto. Further, there is a relative displacement between the first lens element and the fifth lens element. Therefore, the relative position of the first lens element and the fifth lens element can be adjusted so as to provide different focal lengths for image capturing. 
     The image capturing system lens assembly can further include a reflective element, which can be disposed between the first lens element and the fifth lens element. Therefore, it is favorable for obtaining compact size of the image capturing system lens assembly by folding the optical axis. Specifically, the reflective element can be prism, mirror etc., and will not be limited thereto. When the reflective element is prism, which can be made of glass or plastic etc. The incident surface of the prism can be planar or curved. The exiting surface of the prism can be planar or curved. 
     The image capturing system lens assembly can further include an aperture stop. When an axial distance between the aperture stop and the image surface is SL, and an axial distance between the object-side surface of the first lens element and the image surface is TL, the following condition is satisfied: 0.74&lt;SL/TL&lt;1.50. Therefore, it is favorable for balancing the image size and the size of the front opening of the image capturing system lens assembly by adjusting the distance between the aperture stop and the image surface. Further, the following condition can be satisfied: 0.75&lt;SL/TL&lt;1.50. Furthermore, the following condition can be satisfied: 0.76&lt;SL/TL&lt;1.50. Moreover, the following condition can be satisfied: 0.74&lt;SL/TL&lt;1.05. Furthermore, the following condition can be satisfied: 0.80&lt;SL/TL&lt;0.98. 
     When an axial distance between the first lens element and the second lens element is T12, and a focal length of the image capturing system lens assembly is f, the following condition is satisfied: 0.74&lt;T12/f&lt;1.40. Therefore, it is favorable for balancing the distribution of the volume of the image capturing system lens assembly by adjusting the arrangement of the lens elements. Further, the following condition can be satisfied: 0.80&lt;T12/f&lt;1.40. Furthermore, the following condition can be satisfied: 0.82&lt;T12/f&lt;1.38. Moreover, the following condition can be satisfied: 0.90&lt;T12/f&lt;1.20. 
     When a curvature radius of the object-side surface of the second lens element is R3, and a curvature radius of the image-side surface of the second lens element is R4, the following condition is satisfied: −1.05&lt;(R3+R4)/(R3-R4)&lt;0.70. Therefore, it is favorable for reducing the effective radius of the second lens element by adjusting the surface shape and the refractive power of the second lens element. Further, the following condition can be satisfied: −1.00&lt;(R3+R4)/(R3−R4)&lt;1.50. Furthermore, the following condition can be satisfied: −0.80&lt;(R3+R4)/(R3−R4)&lt;1.50. Moreover, the following condition can be satisfied: −0.80&lt;(R3+R4)/(R3−R4)&lt;0.50. 
     When a curvature radius of the object-side surface of the third lens element is R5, and a curvature radius of the image-side surface of the third lens element is R6, the following condition is satisfied: −3.50&lt;(R5+R6)/(R5−R6)&lt;3.00. Therefore, it is favorable for enhancing the image quality of the central area by cooperating the third lens element with the second lens element. Further, the following condition can be satisfied: −2.70&lt;(R5+R6)/(R5−R6)&lt;2.70. Furthermore, the following condition can be satisfied: −2.40&lt;(R5+R6)/(R5−R6)&lt;2.50. 
     When the focal length of the image capturing system lens assembly is f, and a composite focal length of the fourth lens element and the fifth lens element is f45, the following condition is satisfied: −2.50&lt;f1145&lt;1.04. Therefore, it is favorable for adjusting the back focal length by arranging the entire focal length of the fourth lens element and the fifth lens element. Further, the following condition can be satisfied: −2.50&lt;f/f45&lt;0.88; or −2.00&lt;f/f45&lt;0.88. Furthermore, the following condition can be satisfied: −1.00&lt;f/f45&lt;0.70. 
     When a composite focal length of the third lens element and the fourth lens element is f34, and the composite focal length of the fourth lens element and the fifth lens element is f45, the following condition is satisfied: −5.00&lt;f34/f45&lt;3.60. Therefore, the entire focal length of the third lens element and the fourth lens element and the entire focal length of the fourth lens element and the fifth lens element can be adjusted, so that it is favorable for enhancing the light converging quality in the paraxial region by arranging the ratio of the refractive power of the rear end of the image capturing system lens assembly. Further, the following condition can be satisfied: −8.00&lt;f34/f45&lt;2.02. Furthermore, the following condition can be satisfied: −4.00&lt;f34/f45&lt;1.7. 
     When the focal length of the image capturing system lens assembly is f, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and a central thickness of the fifth lens element is CT5, the following condition is satisfied: 0.30&lt;(CT2+T23+CT3+T34+CT4+T45+CT5)/f&lt;3.40. Therefore, it is favorable for reducing the total track length of the image capturing system lens assembly by adjusting the ratio between the total track length from the object-side surface of the second lens element to the image-side surface of the fifth lens element and the focal length. Further, the following condition can be satisfied: 0.30&lt;(CT2+T23+CT3+T34+CT4+T45+CT5)/f&lt;2.02. 
     When the focal length of the image capturing system lens assembly is f, and a composite focal length of the first lens element and the second lens element is f12, the following condition is satisfied: 0.40&lt;f/f12&lt;2.00. Therefore, it is favorable for correcting the astigmatism of aberrations by adjusting the entire focal length of the first lens element and the second lens element. Further, the following condition can be satisfied: 0.60&lt;f/f12&lt;1.50. 
     When a composite focal length of the first lens element, the second lens element and the third lens element is f123, and a composite focal length of the second lens element, the third lens element and the fourth lens element is f234, the following condition is satisfied: −0.40&lt;f123/f234&lt;1.85. Therefore, the entire refractive of the first lens element to the third lens element and the entire refractive of the second lens element to the fourth lens element can be adjusted, so that excessive geometric differences among the lens elements can be avoided by decreasing the ratio of refractive power so as to reduce the manufacturing difficulty. Further, the following condition can be satisfied: −0.20&lt;f123/f234&lt;1.60. 
     When the focal length of the image capturing system lens assembly is f, and a maximum image height of the image capturing system lens assembly is ImgH, the following condition is satisfied: 0.80&lt;f/ImgH&lt;2.25. Therefore, it is favorable for maintaining the image size by adjusting the ratio between the focal length and the image height. Further, the following condition can be satisfied: 0.80&lt;f/ImgH&lt;1.45. Furthermore, the following condition can be satisfied: 0.90&lt;f/ImgH&lt;2.10. 
     When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, the maximum among T12, T23, T34, T45 is ATmax, and the focal length of the image capturing system lens assembly is f, the following condition is satisfied: 0.78&lt;ATmax/f&lt;9.00. Therefore, it is favorable for balancing the ratio of the distances among the lens elements and reducing the assembling error by adjusting the ratio between the focal length and the maximum distance between the lens elements. Further, the following condition can be satisfied: 0.85&lt;ATmax/f&lt;2.0. 
     When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, the maximum among T12, T23, T34, T45 is ATmax, and an axial distance between the image-side surface of the fifth lens element and the image surface is BL, the following condition is satisfied: 1.50&lt;ATmax/BL&lt;7.00. Therefore, it is favorable for balancing the ratio of the distances among the lens elements and reducing the assembling error by adjusting the ratio between the back focal length and the maximum distance between the lens elements. Further, the following condition can be satisfied: 2.00&lt;ATmax/BL&lt;7.00. Furthermore, the following condition can be satisfied: 2.0&lt;ATmax/BL&lt;3.5. 
     When the axial distance between the object-side surface of the first lens element and the image surface is TL, and the focal length of the image capturing system lens assembly is f, the following condition is satisfied: 1.00&lt;TL/f&lt;5.00. Therefore, it is favorable for balancing the compression of the total track length and the expansion of the image surface, and also favorable for enlarging field of view. Further, the following condition can be satisfied: 2.60&lt;TL/f&lt;5.00. 
     When the focal length of the image capturing system lens assembly is f, and a curvature radius of the object-side surface of the first lens element is R1, the following condition is satisfied: −5.00&lt;f/R1&lt;0.45. Therefore, it is favorable for enlarging field of view by adjusting refractive power of the image capturing system lens assembly and the surface shape of the first lens element. Further, the following condition can be satisfied: −2.50&lt;f/R1&lt;0.35. 
     When the focal length of the image capturing system lens assembly is f, and a focal length of the second lens element is f2, the following condition is satisfied: −0.60&lt;f/f2&lt;3.00. Therefore, it is favorable for enhancing light converging quality by adjusting refractive power of the second lens element. Further, the following condition can be satisfied: −0.30&lt;f/f2&lt;2.0. Furthermore, the following condition can be satisfied: 0.30&lt;f/f2&lt;1.80. 
     When the focal length of the image capturing system lens assembly is f, and a focal length of the third lens element is f3, the following condition is satisfied: −2.00&lt;f/f3&lt;0.85. Therefore, it is favorable for reducing spherical aberration by adjusting refractive power of the third lens element and cooperating with the fourth lens element. Further, the following condition can be satisfied: −1.50&lt;f/f3&lt;0. 
     When the axial distance between the fourth lens element and the fifth lens element is T45, and the focal length of the image capturing system lens assembly is f, the following condition is satisfied: 0&lt;T45/f&lt;0.90. Therefore, it is favorable for balancing the ratio between the total track length and the back focal length by adjusting the ratio of distance between the fourth lens element and the fifth lens element to the focal length. Further, the following condition can be satisfied: 0&lt;T45/f&lt;0.60. Furthermore, the following condition can be satisfied: 0&lt;T45/f&lt;0.30. Moreover, the following condition can be satisfied: 0&lt;T45/f&lt;0.10. 
     When a maximum field of view of the image capturing system lens assembly is FOV, the following condition is satisfied: 50 degrees&lt;FOV&lt;120 degrees. Therefore, the image capturing system lens assembly can obtain characteristic of wide field of view, and aberrations, such as distortion etc., due to the excessive field of view can be reduced. Further, the following condition can be satisfied: 65 degrees&lt;FOV&lt;105 degrees. 
     When the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, and a sum of all axial distances between adjacent lens elements of the image capturing system lens assembly is ΣAT, the following condition is satisfied: 0.10&lt;(T23+T34+T45)/ΣAT&lt;0.50. Therefore, it is favorable for reducing the total track length of the image capturing system lens assembly by adjusting the distance ratio among the second lens element to the fifth lens element. Further, the following condition can be satisfied: 0.12&lt;(T231+T34+T45)/ΣAT&lt;0.5. 
     When a maximum distance between an optical effective region of the object-side surface of the first lens element and the optical axis is Y11, and a maximum distance between an optical effective region of the image-side surface of the fifth lens element and the optical axis is Y52, the following condition is satisfied: 0.90&lt;Y52/Y11&lt;2.10. Therefore, it is favorable for compressing the volume and increasing the compactness of the electronic device by adjusting the effective radius of each of the first lens element and the fifth lens element. Further, the following condition can be satisfied: 1.00&lt;Y52/Y11&lt;2.00. Furthermore, the following condition can be satisfied: 1.10&lt;Y52/Y11&lt;2.00. Moreover, the following condition can be satisfied: 1.20&lt;Y52/Y11&lt;1.80. 
     When the focal length of the image capturing system lens assembly is f, and the curvature radius of the object-side surface of the second lens element is R3, the following condition is satisfied: 0.70&lt;f/R3&lt;1.81. Therefore, it is favorable for reducing the effective radius of the second lens element by adjusting the refractive power of the image capturing system lens assembly and the surface shape of the second lens element. 
     When the focal length of the image capturing system lens assembly is f, and the curvature radius of the image-side surface of the second lens element is R4, the following condition is satisfied: −2.50&lt;f/R4&lt;−0.50. Therefore, it is favorable for correcting spherical aberration of the central field by adjusting refractive power of the image capturing system lens assembly and the surface shape of the second lens element. Further, the following condition can be satisfied: −2.70&lt;f/R4&lt;−0.40. 
     When a curvature radius of the object-side surface of the fourth lens element is R7, and a curvature radius of the image-side surface of the fourth lens element is R8, the following condition is satisfied: −1.00&lt;(R7−R8)/(R7+R8)&lt;1.00. Therefore, the surface shape and refractive power of the fourth lens element can be adjusted so as to improve chromatic aberration of the central region. 
     When a refractive index of the third lens element is N3, and a refractive index of the fifth lens element is N5, the following condition is satisfied: 1.60&lt;(N3+N5)/2&lt;1.90. Therefore, the average of the refractive indices of the third lens element and the fifth lens element can be adjusted so as to expand the image size. 
     When the axial distance between the first lens element and the second lens element is T12, and the maximum image height of the image capturing system lens assembly is ImgH, the following condition is satisfied: 0.90&lt;T12/ImgH&lt;1.90. Therefore, it is convenient for disposing other optical elements among the lens elements by adjusting the arrangement of the lens elements. 
     When an f-number of the image capturing system lens assembly is Fno, the following condition is satisfied: 1.60&lt;Fno&lt;2.5. Therefore, it is favorable for balancing the illumination and the depth of field. 
     When the curvature radius of the object-side surface of the first lens element is R1, and the curvature radius of the image-side surface of the first lens element is R2, the following condition is satisfied: −1.00&lt;(R1−R2)/(R1+R2)&lt;1.00. Therefore, it is favorable for increasing field of view by adjusting the focal length of the lens elements on the front end of the image capturing system lens assembly. 
     When the axial distance between the aperture stop and the image surface is SL, the axial distance between the object-side surface of the first lens element and the image surface is TL, and the focal length of the image capturing system lens assembly is f, the following condition is satisfied: 0.30&lt;(TL-SL)/f&lt;0.85. Therefore, it is favorable for balancing the length of the front end of the image capturing system lens assembly and field of view by adjusting the distance between the opening of the image capturing system lens assembly and the aperture stop. Further, the following condition can be satisfied: 0.45&lt;(TL−SL)/f&lt;0.71. 
     When the maximum distance between the optical effective region of the object-side surface of the first lens element and the optical axis is Y11, the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, and the maximum among T12, T23, T34, T45 is ATmax, the following condition is satisfied: 1.80&lt;ATmax/Y11&lt;3.40. Therefore, it is favorable for reducing the opening size and screen-to-body ratio by adjusting the ratio between the effective radius of the first lens element and the maximum distance between the lens elements. Further, the following condition can be satisfied: 2.00&lt;ATmax/Y11&lt;3.00. 
     When the maximum distance between the optical effective region of the object-side surface of the first lens element and the optical axis is Y11, and the maximum image height of the image capturing system lens assembly is ImgH, the following condition is satisfied: 0.34&lt;Y11/ImgH&lt;0.70. Therefore, it is favorable for enhancing the compactness of the electronic device and reducing screen-to-body ratio by adjusting the ratio between the opening of the image capturing system lens assembly and the image size. Further, the following condition can be satisfied: 0.42&lt;Y11/ImgH&lt;0.62. 
     When a central thickness of the first lens element is CT1, the central thickness of the second lens element is CT2, the central thickness of the third lens element is CT3, the central thickness of the fourth lens element is CT4, the central thickness of the fifth lens element is CT5, and a maximum among CT1, CT2, CT3, CT4, CT5 is CTmax, the following condition is satisfied: 0.50&lt;CT1/CTmax≤1.0. Therefore, it is favorable for reducing the effective radius of the second lens element and the thickness of the electronic device by adjusting the ratio between the thickness of the first lens element and the maximum thickness. Further, the following condition can be satisfied: 0.70&lt;CT1/CTmax≤1.0. Furthermore, the following condition can be satisfied: 0.80&lt;CT1/CTmax≤1.0. 
     When an Abbe number of one of the lens elements is Vi, and a refractive index of the lens element is Ni, at least one of the five lens elements satisfies the following condition: 5.0&lt;Vi/Ni&lt;11.9, wherein i=1, 2, 3, 4, 5. Therefore, it is favorable for adjusting chromatic aberration of the peripheral field and enhancing the image size. 
     Each of the aforementioned features of the image capturing system lens assembly can be utilized in various combinations for achieving the corresponding effects. 
     According to the image capturing system lens assembly of the present disclosure, the lens elements thereof can be made of glass or plastic materials. When the lens elements are made of glass materials, the distribution of the refractive power of the image capturing system lens assembly may be more flexible to design. The glass lens element can either be made by grinding or molding. When the lens elements are made of plastic materials, manufacturing costs can be effectively reduced. Furthermore, surfaces of each lens element can be arranged to be aspheric (ASP), since the aspheric surface of the lens element is easy to form a shape other than a spherical surface so as to have more controllable variables for eliminating aberrations thereof, and to further decrease the required amount of lens elements in the image capturing system lens assembly. Therefore, the total track length of the image capturing system lens assembly can also be reduced. The aspheric surfaces may be formed by a plastic injection molding method, a glass molding method or other manufacturing methods. 
     According to the image capturing system lens assembly of the present disclosure, additives can be selectively added into any one (or more) material of the lens elements so as to change the transmittance of the lens element in a particular wavelength range. Therefore, the stray light and chromatic aberration can be reduced. For example, the additives can have the absorption ability for light in a wavelength range of 600 nm-800 nm in the image capturing system lens assembly so as to reduce extra red light or infrared light, or the additives can have the absorption ability for light in a wavelength range of 350 nm-450 nm in the image capturing system lens assembly so as to reduce blue light or ultraviolet light. Therefore, additives can prevent the image from interfering by light in a particular wavelength range. Furthermore, the additives can be homogeneously mixed with the plastic material, and the lens elements can be made by the injection molding method. Moreover, the additives can be coated on the lens surfaces to provide the aforementioned effects. 
     According to the image capturing system lens assembly of the present disclosure, when a surface of the lens element is aspheric, it indicates that entire optical effective region of the surface of the lens element or a part thereof is aspheric. 
     According to the image capturing system lens assembly of the present disclosure, when the lens elements have surfaces being convex and the convex surface position is not defined, it indicates that the aforementioned surfaces of the lens elements can be convex in the paraxial region thereof. When the lens elements have surfaces being concave and the concave surface position is not been defined, it indicates that the aforementioned surfaces of the lens elements can be concave in the paraxial region thereof. In the image capturing system lens assembly of the present disclosure, if the lens element has positive refractive power or negative refractive power, or the focal length of the lens element, all can be referred to the refractive power, or the focal length, in the paraxial region of the lens element. 
     According to the image capturing system lens assembly of the present disclosure, a critical point is a non-axial point of the lens surface where its tangent is perpendicular to the optical axis; an inflection point is a point on a lens surface with a curvature changing from positive to negative or from negative to positive. 
     According to the image capturing system lens assembly of the present disclosure, the image surface thereof, based on the corresponding image sensor, can be flat or curved. In particular, the image surface can be a concave curved surface facing towards the object side. Furthermore, the image capturing system lens assembly of the present disclosure can selectively include at least one image correcting element (such as a field flattener) inserted between the lens element closest to the image surface and the image surface, thus the effect of correcting image aberrations (such as field curvature) can be achieved. The optical properties of the aforementioned image correcting element, such as curvature, thickness, refractive index, position, surface shape (convex or concave, spherical or aspheric, diffraction surface and Fresnel surface, etc.) can be adjusted corresponding to the demands of the imaging apparatus. Generally, a preferred configuration of the image correcting element is to dispose a thin plano-concave element having a concave surface toward the object side on the position closed to the image surface. 
     According to the image capturing system lens assembly of the present disclosure, at least one element with light path folding function can be selectively disposed between the imaged object and the image surface, such as a prism or a mirror, etc. Therefore it is favorable for providing high flexible space arrangement of the image capturing system lens assembly, so that the compactness of the electronic device would not be restricted by the optical total track length of the image capturing system lens assembly.  FIG.  31 A  is a schematic view of an arrangement of a light path folding element LF in the image capturing system lens assembly of the present disclosure.  FIG.  31 B  is a schematic view of another arrangement of the light path folding element LF in the image capturing system lens assembly of the present disclosure. As shown in  FIGS.  31 A and  31 B , the image capturing system lens assembly includes, in order from an imaged object (not shown in drawings) to an image surface IMG, a first optical axis OA 1 , the light path folding element LF and a second optical axis OA 2 , wherein the light path folding element LF can be disposed between the imaged object and a lens group LG of the image capturing system lens assembly as shown in  FIG.  31 A , or can be disposed between the lens group LG of the image capturing system lens assembly and the image surface IMG as shown in  FIG.  31 B . Moreover,  FIG.  31 C  is a schematic view of an arrangement of two light path folding elements LF 1 , LF 2  in the image capturing system lens assembly of the present disclosure. As shown in  FIG.  31 C , the image capturing system lens assembly includes, in order from an imaged object (not shown in drawings) to an image surface IM, a first optical axis OA 1 , the light path folding element LF 1 , a second optical axis OA 2 , the light path folding element LF 2  and a third optical axis OA 3 , wherein the light path folding element LF 1  is disposed between the imaged object and a lens group LG of the image capturing system lens assembly, and the light path folding element LF 2  is disposed between the lens group LG of the image capturing system lens assembly and the image surface IMG. The image capturing system lens assembly can also be selectively disposed with three or more light path folding element, the type, amount and location of the light path folding element will not be limited to the present disclosure. 
     Furthermore, according to the image capturing system lens assembly of the present disclosure, the image capturing system lens assembly can include at least one stop, such as an aperture stop, a glare stop or a field stop, for eliminating stray light and thereby improving image resolution thereof. 
     According to the image capturing system lens assembly of the present disclosure, the aperture stop can be configured as a front stop or a middle stop, wherein the front stop indicates that the aperture stop is disposed between an object and the first lens element, and the middle stop indicates that the aperture stop is disposed between the first lens element and the image surface. When the aperture stop is a front stop, a longer distance between an exit pupil of the image capturing system lens assembly and the image surface can be obtained, and thereby obtains a telecentric effect and improves the image-sensing efficiency of the image sensor, such as CCD or CMOS. The middle stop is favorable for enlarging the field of view of the image capturing system lens assembly and thereby provides a wider field of view for the same. 
     According to the image capturing system lens assembly of the present disclosure, an aperture control unit can be properly configured. The aperture control unit can be a mechanical element or a light controlling element, and the dimension and the shape of the aperture control unit can be electrically controlled. The mechanical element can include a moveable component such a blade group or a shielding plate. The light controlling element can include a screen component such as a light filter, an electrochromic material, a liquid crystal layer or the like. The amount of incoming light or the exposure time of the image can be controlled by the aperture control unit to enhance the image moderation ability. In addition, the aperture control unit can be the aperture stop of the image capturing system lens assembly according to the present disclosure, so as to moderate the image quality by changing f-number such as changing the depth of field or the exposure speed. 
     According to the image capturing system lens assembly of the present disclosure, the image capturing system lens assembly of the present disclosure can be applied to 3D (three-dimensional) image capturing applications, in products such as digital cameras, mobile devices, digital tablets, smart TVs, surveillance systems, motion sensing input devices, driving recording systems, rearview camera systems, wearable devices, unmanned aerial vehicles, and other electronic imaging products. 
     According to the present disclosure, an imaging apparatus including the aforementioned image capturing system lens assembly and an image sensor is provided, wherein the image sensor is disposed on the image surface of the image capturing system lens assembly. By the arrangement of the aperture stop and the image surface, it is favorable for balancing the image size and the size of the front opening of the image capturing system lens assembly. Moreover, the imaging apparatus can further include a barrel member, a holder member or a combination thereof. 
     According to the present disclosure, an electronic device including the aforementioned imaging apparatus is provided. Therefore, the image quality can be increased. Moreover, the electronic device can further include a control unit, a display, a storage unit, a random-access memory unit (RAM) or a combination thereof. 
     According to the above description of the present disclosure, the following specific embodiments are provided for further explanation. 
     1st Embodiment 
       FIG.  1 A  is a schematic view of an imaging apparatus  1  according to the 1st embodiment of the present disclosure.  FIG.  2    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  1  according to the 1st embodiment. In  FIG.  1 A , the imaging apparatus  1  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore,  FIG.  23 A  is a schematic view of partial parameters, the inflection points IP of each lens element and the critical points CP according to the 1st embodiment. In  FIG.  23 A , the object-side surface of the first lens element E 1  includes one inflection point IP, and the image-side surface of the first lens element E 1  includes one inflection point IP. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point IP (as shown in  FIG.  23 A ). 
     The third lens element E 3  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes one inflection point IP (as shown in  FIG.  23 A ), and the image-side surface of the third lens element E 3  includes two inflection points IP (as shown in  FIG.  23 A ). 
     The fourth lens element E 4  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point IP (as shown in  FIG.  23 A ), and the image-side surface of the fourth lens element E 4  includes three inflection points IP (as shown in  FIG.  23 A ). 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes three inflection points IP (as shown in  FIG.  23 A ), and the image-side surface of the fifth lens element E 5  includes three inflection points IP and one critical point (as shown in  FIG.  23 A ). 
     According to the 1st embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The equation of the aspheric surface profiles of the aforementioned lens elements of the 1st embodiment is expressed as follows: 
     
       
         
           
             
               
                 X 
                 ⁡ 
                 ( 
                 Y 
                 ) 
               
               = 
               
                 
                   
                     ( 
                     
                       
                         Y 
                         2 
                       
                       / 
                       R 
                     
                     ) 
                   
                   / 
                   
                     ( 
                     
                       1 
                       + 
                       
                         sqrt 
                         ⁡ 
                         ( 
                         
                           1 
                           - 
                           
                             
                               ( 
                               
                                 1 
                                 + 
                                 k 
                               
                               ) 
                             
                             × 
                             
                               
                                 ( 
                                 
                                   Y 
                                   / 
                                   R 
                                 
                                 ) 
                               
                               2 
                             
                           
                         
                         ) 
                       
                     
                     ) 
                   
                 
                 + 
                 
                   
                     ∑ 
                     l 
                   
                   
                     
                       ( 
                       Ai 
                       ) 
                     
                     × 
                     
                       ( 
                       
                         Y 
                         l 
                       
                       ) 
                     
                   
                 
               
             
             , 
           
         
       
     
     where,
 
X is the displacement in parallel with an optical axis from the intersection point of the aspheric surface and the optical axis to a point at a distance of Y from the optical axis on the aspheric surface;
 
Y is the vertical distance from the point on the aspheric surface to the optical axis;
 
R is the curvature radius;
 
k is the conic coefficient; and
 
Ai is the i-th aspheric coefficient.
 
     In the image capturing system lens assembly according to the 1st embodiment, when a focal length of the image capturing system lens assembly is f, an f-number of the image capturing system lens assembly is Frio, and half of a maximum field of view of the image capturing system lens assembly is HFOV, these parameters have the following values: f=2.25 mm; Fno=2.39; and HFOV=38.7 degrees. 
     In the image capturing system lens assembly according to the 1st embodiment, when an axial distance between the first lens element E 1  and the second lens element E 2  is T12, an axial distance between the second lens element E 2  and the third lens element E 3  is T23, an axial distance between the third lens element E 3  and the fourth lens element E 4  is T34, an axial distance between the fourth lens element E 4  and the fifth lens element E 5  is T45, a maximum among T12, T23, T34, T45 is ATmax, an axial distance between the image-side surface of the fifth lens element E 5  and the image surface IMG is BL, a maximum distance between an optical effective region of the object-side surface of the first lens element E 1  and the optical axis is Y11, and the focal length of the image capturing system lens assembly is f, the following conditions are satisfied: ATmax/BL=2.85; ATmax/Y11=2.85; and ATmax/f=1.18; in  FIG.  24   , which is a schematic view of partial parameters according to the 1st embodiment, ATmax=T12. 
     In the image capturing system lens assembly according to the 1st embodiment, when a central thickness of the first lens element E 1  is CT1, a central thickness of the second lens element E 2  is CT2, a central thickness of the third lens element E 3  is CT3, a central thickness of the fourth lens element E 4  is CT4, a central thickness of the fifth lens element E 5  is CT5, and a maximum among CT1, CT2, CT3, CT4, CT5 is CTmax, the following condition is satisfied: CT1/CTmax=0.76. 
     In the image capturing system lens assembly according to the 1st embodiment, when the axial distance between the second lens element E 2  and the third lens element E 3  is T23, the axial distance between the third lens element E 3  and the fourth lens element E 4  is T34, the axial distance between the fourth lens element E 4  and the fifth lens element E 5  is T45, the central thickness of the second lens element E 2  is CT2, the central thickness of the third lens element E 3  is CT3, the central thickness of the fourth lens element E 4  is CT4, the central thickness of the fifth lens element E 5  is CT5, and the focal length of the image capturing system lens assembly is f, the following condition is satisfied: (CT2+T23+CT3+T34+CT4+T45+CT5)/f=1.78. 
     In the image capturing system lens assembly according to the 1st embodiment, when the focal length of the image capturing system lens assembly is f, a focal length of the second lens element E 2  is f2, a focal length of the third lens element E 3  is f3, a composite focal length of the first lens element E 1  and the second lens element E 2  is f12, and a composite focal length of the fourth lens element E 4  and the fifth lens element E 5  is f45, the following conditions are satisfied: f/f12=1.17; f/f2=1.18; f/f3=−0.36; and f/f45=0.55. 
     In the image capturing system lens assembly according to the 1st embodiment, when the focal length of the image capturing system lens assembly is f, and a maximum image height of the image capturing system lens assembly is ImgH, the following condition is satisfied: f/ImgH=1.25. 
     In the image capturing system lens assembly according to the 1st embodiment, when the focal length of the image capturing system lens assembly is f, a curvature radius of the object-side surface of the first lens element E 1  is R1, a curvature radius of the object-side surface of the second lens element E 2  is R3, and a curvature radius of the image-side surface of the second lens element E 2  is R4, the following conditions are satisfied: f/R1=0.23; f/R3=1.15; and f/R4=−1.20. 
     In the image capturing system lens assembly according to the 1st embodiment, when a composite focal length of the first lens element E 1 , the second lens element E 2  and the third lens element E 3  is f123, and a composite focal length of the second lens element E 2 , the third lens element E 3  and the fourth lens element E 4  is f234, the following condition is satisfied: f123/f234=1.16. 
     In the image capturing system lens assembly according to the 1st embodiment, when a composite focal length of the third lens element E 3  and the fourth lens element E 4  is f34, and the composite focal length of the fourth lens element E 4  and the fifth lens element E 5  is f45, the following condition is satisfied: f34/f45=−1.08. 
     In the image capturing system lens assembly according to the 1st embodiment, when a refractive index of the third lens element E 3  is N3, and a refractive index of the fifth lens element E 5  is N5, the following condition is satisfied: (N3+N5)/2=1.650. 
     In the image capturing system lens assembly according to the 1st embodiment, when the curvature radius of the object-side surface of the first lens element E 1  is R1, and a curvature radius of the image-side surface of the first lens element E 1  is R2, the following condition is satisfied: (R1-R2)/(R1+R2)=0.68. 
     In the image capturing system lens assembly according to the 1st embodiment, when the curvature radius of the object-side surface of the second lens element E 2  is R3, and a curvature radius of the image-side surface of the second lens element E 2  is R4, the following condition is satisfied: (R3+R4)/(R3−R4)=0.02. 
     In the image capturing system lens assembly according to the 1st embodiment, when a curvature radius of the object-side surface of the third lens element E 3  is R5, and a curvature radius of the image-side surface of the third lens element E 3  is R6, the following condition is satisfied: (R5+R6)/(R5−R6)=0.09. 
     In the image capturing system lens assembly according to the 1st embodiment, when a curvature radius of the object-side surface of the fourth lens element E 4  is R7, and a curvature radius of the image-side surface of the fourth lens element E 4  is R8, the following condition is satisfied: (R7−R8)/(R7+R8)=−0.24. 
     In the image capturing system lens assembly according to the 1st embodiment, when an axial distance between the aperture stop ST and the image surface IMG is SL, and an axial distance between the object-side surface of the first lens element E 1  and the image surface IMG is TL, the following condition is satisfied: SL/TL=0.85. 
     In the image capturing system lens assembly according to the 1st embodiment, when the axial distance between the first lens element E 1  and the second lens element E 2  is T12, the focal length of the image capturing system lens assembly is f, and the maximum image height of the image capturing system lens assembly is ImgH, the following conditions are satisfied: T12/f=1.18; and T12/ImgH=1.47. 
     In the image capturing system lens assembly according to the 1st embodiment, when the axial distance between the first lens element E 1  and the second lens element E 2  is T12, the axial distance between the second lens element E 2  and the third lens element E 3  is T23, the axial distance between the third lens element E 3  and the fourth lens element E 4  is T34, the axial distance between the fourth lens element E 4  and the fifth lens element E 5  is T45, and a sum of all axial distances between adjacent lens elements of the image capturing system lens assembly is ΣAT, the following condition is satisfied: (T23+T34+T45)/ΣAT=0.31. In according to the 1st embodiment, an axial distance between two adjacent lens elements indicates a distance along the optical axis between two adjacent lens surfaces of the adjacent lens elements; ΣAT=T12+T23+T34+T45. 
     In the image capturing system lens assembly according to the 1st embodiment, when the axial distance between the fourth lens element E 4  and the fifth lens element E 5  is T45, and the focal length of the image capturing system lens assembly is f, the following condition is satisfied: T45/f=0.06. 
     In the image capturing system lens assembly according to the 1st embodiment, when the focal length of the image capturing system lens assembly is 1, the axial distance between the object-side surface of the first lens element E 1  and the image surface IMG is TL, and the axial distance between the aperture stop ST and the image surface IMG is SL, the following conditions are satisfied: TL/f=3.72; and (TL-SL)/f=0.57. 
     In the image capturing system lens assembly according to the 1st embodiment, when an Abbe number of the first lens element E 1  is V1, an Abbe number of the second lens element E 2  is V2, an Abbe number of the third lens element E 3  is V3, an Abbe number of the fourth lens element E 4  is V4, an Abbe number of the fifth lens element E 5  is V5, a refractive index of the first lens element E 1  is N1, a refractive index of the second lens element E 2  is N2, the refractive index of the third lens element E 3  is N3, a refractive index of the fourth lens element E 4  is N4, and the refractive index of the fifth lens element E 5  is N5, the following conditions are satisfied: VI/N1=10.90; V2/N2=36.26; V3/N3=10.90; V4/N4=36.48; and V5/N5=15.85. 
     In the image capturing system lens assembly according to the 1st embodiment, when the maximum distance between the optical effective region of the object-side surface of the first lens element E 1  and the optical axis is Y11, a maximum distance between an optical effective region of the image-side surface of the fifth lens element E 5  and the optical axis is Y52, and a maximum image height of the image capturing system lens assembly is ImgH, the following conditions are satisfied: Y11/ImgH=0.52; and Y52/Y11=1.38. 
     In the image capturing system lens assembly according to the 1st embodiment, when a maximum field of view of the image capturing system lens assembly is FOV, the following condition is satisfied: FOV=77.4 degrees. 
     The detailed optical data of the 1st embodiment are shown in Table 1A and the aspheric surface data are shown in Table 1 B below. 
     
       
         
           
               
             
               
                 TABLE 1A 
               
             
            
               
                   
               
               
                 1st Embodiment 
               
               
                 f = 2.25 mm, Fno = 2.39, HFOV = 38.7 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 9.9108 
                 ASP 
                 0.785 
                 Plastic 
                 1.686 
                 18.4 
                 −3.54 
               
               
                 2 
                   
                 1.8879 
                 ASP 
                 0.500 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.022 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 1.9645 
                 ASP 
                 0.835 
                 Plastic 
                 1.544 
                 56.0 
                 1.91 
               
               
                 8 
                   
                 −1.8687 
                 ASP 
                 −0.330  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 1.080 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 −9.7276 
                 ASP 
                 1.033 
                 Plastic 
                 1.686 
                 18.4 
                 −6.34 
               
               
                 11 
                   
                 8.1979 
                 ASP 
                 0.281 
               
               
                 12 
                 Lens 4 
                 −2.4115 
                 ASP 
                 0.643 
                 Plastic 
                 1.534 
                 56.0 
                 −13.71 
               
               
                 13 
                   
                 −3.9290 
                 ASP 
                 0.138 
               
               
                 14 
                 Lens 5 
                 3.9870 
                 ASP 
                 0.320 
                 Plastic 
                 1.614 
                 25.6 
                 3.49 
               
               
                 15 
                   
                 −4.4840 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.381 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.880 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.140 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 1B 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k= 
                 −2.3431800E+01 
                 −1.7197400E+01 
                 −7.9061200E−01 
                 1.1809100E+00 
                 −9.0000000E+01 
               
               
                 A4= 
                 −9.9805636E−02 
                  1.4898073E−01 
                 −3.1461667E−02 
                 9.0526258E−02 
                  7.5868436E−02 
               
               
                 A6= 
                  1.8234516E−01 
                 −3.0978898E−01 
                  1.0575458E−01 
                 1.5436579E−02 
                 −2.1228211E−01 
               
               
                 A8= 
                 −8.8255735E−01 
                 −9.4691141E−01 
                 −6.8341573E−01 
                 −3.2915438E−01  
                  9.9579491E−02 
               
               
                 A10= 
                  2.4712806E+00 
                  8.6907588E+00 
                  2.1330630E+00 
                 9.8980261E−01 
                 −2.6342732E−01 
               
               
                 A12= 
                 −3.9395586E+00 
                 −2.9142963E+01 
                 −3.9485913E+00 
                 −1.4449666E+00  
                  2.1375271E+00 
               
               
                 A14= 
                  3.4491798E+00 
                  4.9133032E+01 
                  4.5442874E+00 
                 1.2180940E+00 
                 −4.8877517E+00 
               
               
                 A16= 
                 −1.4453295E+00 
                 −3.3860120E+01 
                 −3.2174497E+00 
                 −5.9284085E−01  
                  5.5123630E+00 
               
               
                 A18= 
                  1.7949499E−01 
                 −3.5921953E−01 
                  1.2905098E+00 
                 1.5151716E−01 
                 −3.4322478E+00 
               
               
                 A20= 
                   
                   
                 −2.2709907E−01 
                 −1.5511153E−02  
                  1.1309050E+00 
               
               
                 A22= 
                   
                   
                   
                   
                 −1.5374577E−01 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k= 
                 3.7377900E+01 
                 −9.0000000E+01 
                 7.7310800E+00 
                  1.8221900E+00 
                 −2.1304200E+01 
               
               
                 A4= 
                 6.7308833E−02 
                 −1.1782929E+00 
                 −2.5677679E+00  
                 −2.1993791E+00 
                  3.1063750E−02 
               
               
                 A6= 
                 2.9302679E−01 
                  7.5163345E+00 
                 1.1436400E+01 
                  8.7652430E+00 
                  8.9722397E−01 
               
               
                 A8= 
                 1.9821155E+00 
                 −1.9855493E+01 
                 −2.6434288E+01  
                 −1.4353442E+01 
                 −3.7882255E+00 
               
               
                 A10= 
                 −1.7565268E+01  
                  3.1052925E+01 
                 3.8460522E+01 
                 −1.2508447E+01 
                  4.9972926E+00 
               
               
                 A12= 
                 5.0364392E+01 
                 −3.3408923E+01 
                 −3.7899260E+01  
                  9.3814645E+01 
                 −3.7618398E−01 
               
               
                 A14= 
                 −7.8533145E+01  
                  2.6790107E+01 
                 2.6410906E+01 
                 −1.7519460E+02 
                 −5.0009059E+00 
               
               
                 A16= 
                 7.4223383E+01 
                 −1.5934706E+01 
                 −1.3201684E+01  
                  1.7432934E+02 
                  5.1701549E+00 
               
               
                 A18= 
                 −4.2503981E+01  
                  6.4805831E+00 
                 4.5505638E+00 
                 −1.0017920E+02 
                 −2.3519057E+00 
               
               
                 A20= 
                 1.3559963E+01 
                 −1.5603147E+00 
                 −9.5465594E−01  
                  3.1391485E+01 
                  5.1318680E−01 
               
               
                 A22= 
                 −1.8466011E+00  
                  1.6452890E−01 
                 8.9459348E−02 
                 −4.1571984E+00 
                 −4.2459373E−02 
               
               
                   
               
            
           
         
       
     
     In Table 1A, the curvature radius, the thickness and the focal length are shown in millimeters (mm). Surface numbers 0-18 represent the surfaces sequentially arranged from the object side to the image side along the optical axis. In Table 1B, k represents the conic coefficient of the equation of the aspheric surface profiles. A4-A22 represent the aspheric coefficients ranging from the 4th order to the 22th order. The tables presented below for each embodiment correspond to schematic parameter and aberration curves of each embodiment, and term definitions of the tables are the same as those in Table 1A and Table 1B of the 1st embodiment. Therefore, an explanation in this regard will not be provided again. 
     Please refer to  FIG.  1 B  and  FIG.  23 B , wherein  FIG.  1 B  is a schematic view of the imaging apparatus  1  with another reflective element E 7  according to the 1st embodiment of the present disclosure, and  FIG.  23 B  is a schematic view of partial parameters, the inflection points IP of each lens element and the critical points CP according to the 1st embodiment of  FIG.  1 B . The difference between the  FIG.  1 B ,  FIG.  23 B  and  FIG.  1 A ,  FIG.  23 A  is that the reflective element E 7  of  FIG.  1 B  and  FIG.  23 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     Further,  FIG.  25 A  is a schematic view of the imaging apparatus  1  according to the 1st embodiment of  FIG.  1 A  which is arranged with lens barrels G 1 , G 2 , and  FIG.  25 B  is a schematic view of the imaging apparatus  1  according to the 1st embodiment of  FIG.  1 B  which is arranged with lens barrels G 1 , G 2 . In  FIG.  25 A  and  FIG.  25 B , the first lens element E 1  is disposed in the lens barrel G 1  which belongs to a front lens group. The second lens element E 2 , the third lens element E 3 , the fourth lens element E 4  and the fifth lens element E 5  are disposed in the lens barrel G 2  which are belong to a rear lens group. There is a relative displacement between the rear lens group and the front lens group. In detailed, in  FIG.  25 A , the rear lens group is displaced along the optical axis X relative to the front lens group, and there is a relative displacement between the first lens element E 1  and the fifth lens element E 5 . In  FIG.  25 B , the rear lens group is displaced along a second optical axis X2 relative to the front lens group due to a first optical axis XI is folded into the second optical axis X2 by the reflective E 7 ; that is the rear lens group is displaced along a direction perpendicular with the first optical axis X1 relative to the front lens group. 
     2nd Embodiment 
       FIG.  3 A  is a schematic view of an imaging apparatus  2  according to the 2nd embodiment of the present disclosure.  FIG.  4    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  2  according to the 2nd embodiment. In  FIG.  3 A , the imaging apparatus  2  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the first lens element E 1  includes one inflection point, and the image-side surface of the first lens element E 1  includes one inflection point. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes two inflection points, and the image-side surface of the third lens element E 3  includes two inflection points. 
     The fourth lens element E 4  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes three inflection points, and the image-side surface of the fourth lens element E 4  includes three inflection points. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes four inflection points and two critical points. 
     According to the 2nd embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 2nd embodiment are shown in Table 2A and the aspheric surface data are shown in Table 2B below. 
     
       
         
           
               
             
               
                 TABLE 2A 
               
             
            
               
                   
               
               
                 2nd Embodiment 
               
               
                 f = 2.32 mm, Fno = 2.39, HFOV = 37.7 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 9.8039 
                 ASP 
                 0.991 
                 Plastic 
                 1.660 
                 20.4 
                 −5.06 
               
               
                 2 
                   
                 2.3898 
                 ASP 
                 0.330 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 1.9492 
                 ASP 
                 0.769 
                 Plastic 
                 1.544 
                 56.0 
                 2.28 
               
               
                 8 
                   
                 −2.9505 
                 ASP 
                 −0.305  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.494 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 8.3949 
                 ASP 
                 1.600 
                 Plastic 
                 1.686 
                 18.4 
                 −6.54 
               
               
                 11 
                   
                 2.6970 
                 ASP 
                 0.270 
               
               
                 12 
                 Lens 4 
                 −9.0129 
                 ASP 
                 0.547 
                 Plastic 
                 1.544 
                 56.0 
                 27.88 
               
               
                 13 
                   
                 −5.7743 
                 ASP 
                 0.177 
               
               
                 14 
                 Lens 5 
                 1.7530 
                 ASP 
                 0.320 
                 Plastic 
                 1.686 
                 18.4 
                 3.70 
               
               
                 15 
                   
                 5.2569 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.378 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.840 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.140 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2B 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k= 
                 2.1208600E+01 
                 −5.3522400E+01  
                 −1.7243500E+00 
                  3.0908000E+00 
                  3.8717700E+01 
               
               
                 A4= 
                 −1.0192138E−01  
                 2.7997745E−01 
                 −1.4769582E−01 
                 −2.3797074E−01 
                 −1.6073625E−01 
               
               
                 A6= 
                 3.6402271E−01 
                 1.5309626E−01 
                  7.0686388E−01 
                  1.1132251E+00 
                  4.6031623E−01 
               
               
                 A8= 
                 −1.5748152E+00  
                 −1.3503865E+01  
                 −2.3619497E+00 
                 −2.8783062E+00 
                 −7.4751648E−01 
               
               
                 A10= 
                 3.9164661E+00 
                 9.6509359E+01 
                  4.6740386E+00 
                  4.2366057E+00 
                 −3.8188427E−01 
               
               
                 A12= 
                 −5.7548121E+00  
                 −3.4422468E+02  
                 −5.8862277E+00 
                 −3.7029560E+00 
                  3.2949583E+00 
               
               
                 A14= 
                 4.7631825E+00 
                 6.4294542E+02 
                  4.7718549E+00 
                  1.9504175E+00 
                 −5.4349415E+00 
               
               
                 A16= 
                 −1.9399317E+00  
                 −5.3737869E+02  
                 −2.4575727E+00 
                 −6.3005004E−01 
                  4.6786278E+00 
               
               
                 A18= 
                 2.5479145E−01 
                 9.2728193E+01 
                  7.5456326E−01 
                  1.3686488E−01 
                 −2.3177718E+00 
               
               
                 A20= 
                   
                   
                 −1.0872166E−01 
                 −1.9554558E−02 
                  6.2761903E−01 
               
               
                 A22= 
                   
                   
                   
                   
                 −7.2307086E−02 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k= 
                 −9.0000000E+01 
                 −9.0000000E+01 
                 1.6507200E+01 
                 −2.6395600E+00 
                 −3.5192300E−01 
               
               
                 A4= 
                  3.2105564E−01 
                 −1.6030761E−01 
                 4.5477252E−01 
                  1.3375718E+00 
                  1.6357659E+00 
               
               
                 A6= 
                 −1.4026242E+00 
                  2.8761728E−01 
                 −5.9963430E+00  
                 −8.1312898E+00 
                 −6.9738418E+00 
               
               
                 A8= 
                  5.3143496E+00 
                  1.8550064E+00 
                 2.2939610E+01 
                  2.5531325E+01 
                  1.3364951E+01 
               
               
                 A10= 
                 −1.4421043E+01 
                 −9.2907003E+00 
                 −5.1479805E+01  
                 −7.2619666E+01 
                 −1.6669319E+01 
               
               
                 A12= 
                  2.4998723E+01 
                  1.8892058E+01 
                 7.5545067E+01 
                  1.5751597E+02 
                  1.6051856E+01 
               
               
                 A14= 
                 −2.7950867E+01 
                 −2.2029370E+01 
                 −7.3778746E+01  
                 −2.2464928E+02 
                 −1.2023790E+01 
               
               
                 A16= 
                  2.0233466E+01 
                  1.6012744E+01 
                 4.7467665E+01 
                  2.0224498E+02 
                  6.3790391E+00 
               
               
                 A18= 
                 −9.1480135E+00 
                 −7.2160663E+00 
                 −1.9358893E+01  
                 −1.1095141E+02 
                 −2.1454497E+00 
               
               
                 A20= 
                  2.3405629E+00 
                  1.8505801E+00 
                 4.5470676E+00 
                  3.3887610E+01 
                  3.9793640E−01 
               
               
                 A22= 
                 −2.5815462E−01 
                 −2.0658342E−01 
                 −4.6944548E−01  
                 −4.4145681E+00 
                 −3.0015317E−02 
               
               
                   
               
            
           
         
       
     
     In the 2nd embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 2nd embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 2A and Table 2B as the following values and satisfy the following conditions in Table 2C: 
     
       
         
           
               
             
               
                 TABLE 2C 
               
               
                   
               
               
                 2nd Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 f [mm] 
                 2.32 
                 (R1 − R2)/(R1 + R2) 
                 0.61 
               
               
                 Fno 
                 2.39 
                 (R3 + R4)/(R3 − R4) 
                 −0.20 
               
               
                 HFOV [degrees] 
                 37.7 
                 (R5 + R6)/(R5 − R6) 
                 1.95 
               
               
                 ATmax/BL 
                 2.66 
                 (R7 − R8)/(R7 + R8) 
                 0.22 
               
               
                 ATmax/Y11 
                 2.62 
                 SL/TL 
                 0.84 
               
               
                 ATmax/f 
                 1.06 
                 T12/f 
                 1.06 
               
               
                 CT1/CTmax 
                 0.62 
                 T12/ImgH 
                 1.37 
               
               
                 (CT2 + T23 + CT3 + T34 + 
                 1.67 
                 (T23 + T34 + T45)/ΣAT 
                 0.20 
               
               
                 CT4 + T45 + CT5)/f 
               
               
                 f/f12 
                 0.86 
                 T45/f 
                 0.08 
               
               
                 f/f2 
                 1.02 
                 TL/f 
                 3.56 
               
               
                 f/f3 
                 −0.35 
                 (TL − SL)/f 
                 0.57 
               
               
                 f/f45 
                 0.72 
                 V1/N1 
                 12.29 
               
               
                 f/ImgH 
                 1.29 
                 V2/N2 
                 36.26 
               
               
                 f/R1 
                 0.24 
                 V3/N3 
                 10.90 
               
               
                 f/R3 
                 1.19 
                 V4/N4 
                 36.26 
               
               
                 f/R4 
                 −0.79 
                 V5/N5 
                 10.90 
               
               
                 f123/f234 
                 1.44 
                 Y11/ImgH 
                 0.52 
               
               
                 f34/f45 
                 −2.75 
                 Y52/Y11 
                 1.37 
               
               
                 (N3 + N5)/2 
                 1.686 
                 FOV [degrees] 
                 75.4 
               
               
                   
               
            
           
         
       
     
     Please refer to  FIG.  3 B , which is a schematic view of the imaging apparatus  2  with another reflective element E 7  according to the 2nd embodiment of the present disclosure. The difference between the  FIG.  3 B  and  FIG.  3 A  is that the reflective element E 7  of  FIG.  3 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     3rd Embodiment 
       FIG.  5 A  is a schematic view of an imaging apparatus  3  according to the 3rd embodiment of the present disclosure.  FIG.  6    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  3  according to the 3rd embodiment. In  FIG.  5 A , the imaging apparatus  3  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes two inflection points. 
     The fourth lens element E 4  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes one inflection point. 
     According to the 3rd embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 3rd embodiment are shown in Table 3A and the aspheric surface data are shown in Table 3B below. 
     
       
         
           
               
             
               
                 TABLE 3A 
               
             
            
               
                   
               
               
                 3rd Embodiment 
               
               
                 f = 2.37 mm, Fno = 2.38, HFOV = 38.7 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −3.0740 
                 ASP 
                 1.050 
                 Plastic 
                 1.703 
                 17.7 
                 −9.80 
               
               
                 2 
                   
                 −6.3322 
                 ASP 
                 0.270 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.820 
                 32.5 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 1.8385 
                 ASP 
                 0.898 
                 Plastic 
                 1.544 
                 56.0 
                 2.27 
               
               
                 8 
                   
                 −3.1061 
                 ASP 
                 −0.240  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.330 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 10.9449 
                 ASP 
                 0.938 
                 Plastic 
                 1.686 
                 18.4 
                 −3.23 
               
               
                 11 
                   
                 1.7771 
                 ASP 
                 0.271 
               
               
                 12 
                 Lens 4 
                 9.8510 
                 ASP 
                 0.782 
                 Plastic 
                 1.544 
                 56.0 
                 7.86 
               
               
                 13 
                   
                 −7.3426 
                 ASP 
                 0.090 
               
               
                 14 
                 Lens 5 
                 1.0462 
                 ASP 
                 0.320 
                 Plastic 
                 1.686 
                 18.4 
                 9.84 
               
               
                 15 
                   
                 1.0840 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.490 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.890 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.150 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 3B 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k= 
                 8.1024300E+00 
                 2.8846500E+01 
                 −8.5911000E−01 
                 3.1871100E+00 
                 7.2305700E+01 
               
               
                 A4= 
                 3.0821857E−02 
                 −1.9381584E−02  
                 −7.8869193E−03 
                 2.3741379E−02 
                 −1.1585322E−01  
               
               
                 A6= 
                 −1.1826878E−01  
                 1.1898970E−01 
                  1.7794505E−03 
                 8.8004665E−02 
                 1.4327133E−01 
               
               
                 A8= 
                 7.7199476E−01 
                 −1.5662106E+00  
                 −6.4446851E−02 
                 −1.8989793E−02  
                 1.2559841E−03 
               
               
                 A10= 
                 −2.6038638E+00  
                 9.9943914E+00 
                  1.7066787E−01 
                 −2.4620242E−01  
                 −2.3544203E−01  
               
               
                 A12= 
                 5.5004778E+00 
                 −3.3889233E+01  
                 −3.0773292E−01 
                 2.6516029E−01 
                 1.7056414E−01 
               
               
                 A14= 
                 −6.8524815E+00  
                 6.2382705E+01 
                  2.9475622E−01 
                 −8.3486213E−02  
                 4.3237950E−02 
               
               
                 A16= 
                 4.6242313E+00 
                 −5.7929680E+01  
                 −1.5220913E−01 
                 −1.0145818E−02  
                 −7.5592434E−02  
               
               
                 A18= 
                 −1.2801142E+00  
                 2.0717119E+01 
                  3.2820439E−02 
                 7.2927162E−03 
                 1.8954438E−02 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k= 
                 −2.9918400E+01 
                  5.5274300E+01 
                 5.4683800E−01 
                 −4.5280000E+00 
                 −2.2542600E+00 
               
               
                 A4= 
                  2.8353790E−01 
                 −4.0793099E−02 
                 −6.2513529E−01  
                 −2.2638576E−01 
                  1.1512865E−01 
               
               
                 A6= 
                 −1.0961027E+00 
                  8.4060159E−01 
                 3.3933571E+00 
                  8.9623437E−01 
                 −1.5713332E+00 
               
               
                 A8= 
                  2.3083651E+00 
                 −3.8369224E+00 
                 −1.3204649E+01  
                 −6.1182514E+00 
                  3.2742050E+00 
               
               
                 A10= 
                 −2.8394068E+00 
                  9.4493523E+00 
                 3.4746815E+01 
                  1.6109295E+01 
                 −3.8054068E+00 
               
               
                 A12= 
                  2.0413340E+00 
                 −1.3612183E+01 
                 −6.1080186E+01  
                 −2.3188816E+01 
                  2.9006424E+00 
               
               
                 A14= 
                 −8.1922702E−01 
                  1.1943746E+01 
                 7.2553653E+01 
                  2.0216758E+01 
                 −1.4781704E+00 
               
               
                 A16= 
                  1.7462281E−01 
                 −6.3130536E+00 
                 −5.7301956E+01  
                 −1.0655872E+01 
                  4.7713123E−01 
               
               
                 A18= 
                 −1.8959565E−02 
                  1.8573070E+00 
                 2.8632601E+01 
                  3.0978152E+00 
                 −8.6033918E−02 
               
               
                 A20= 
                   
                 −2.3494451E−01 
                 −8.1342340E+00  
                 −3.7745122E−01 
                  6.3788905E−03 
               
               
                 A22= 
                   
                   
                 9.9483430E−01 
               
               
                   
               
            
           
         
       
     
     In the 3rd embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 3rd embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 3A and Table 3B as the following values and satisfy the following conditions in Table 3C: 
     
       
         
           
               
             
               
                 TABLE 3C 
               
               
                   
               
               
                 3rd Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 2.37 
               
               
                   
                 Fno 
                 2.38 
               
               
                   
                 HFOV [degrees] 
                 38.7 
               
               
                   
                 ATmax/BL 
                 2.32 
               
               
                   
                 ATmax/Y11 
                 2.62 
               
               
                   
                 ATmax/f 
                 1.02 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 1.43 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.14 
               
               
                   
                 f/f2 
                 1.05 
               
               
                   
                 f/f3 
                 −0.74 
               
               
                   
                 f/f45 
                 0.57 
               
               
                   
                 f/ImgH 
                 1.32 
               
               
                   
                 f/R1 
                 −0.77 
               
               
                   
                 f/R3 
                 1.29 
               
               
                   
                 f/R4 
                 −0.76 
               
               
                   
                 f123/f234 
                 1.37 
               
               
                   
                 f34/f45 
                 −1.46 
               
               
                   
                 (N3 + N5)/2 
                 1.686 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 −0.35 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 −0.26 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 1.39 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 6.85 
               
               
                   
                 SL/TL 
                 0.83 
               
               
                   
                 T12/f 
                 1.02 
               
               
                   
                 T12/ImgH 
                 1.34 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.16 
               
               
                   
                 T45/f 
                 0.04 
               
               
                   
                 TL/f 
                 3.33 
               
               
                   
                 (TL − SL)/f 
                 0.56 
               
               
                   
                 V1/N1 
                 10.36 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 10.90 
               
               
                   
                 V4/N4 
                 36.26 
               
               
                   
                 V5/N5 
                 10.90 
               
               
                   
                 Y11/ImgH 
                 0.51 
               
               
                   
                 Y52/Y11 
                 1.42 
               
               
                   
                 FOV [degrees] 
                 77.4 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  5 B , which is a schematic view of the imaging apparatus  3  with another reflective element E 7  according to the 3rd embodiment of the present disclosure. The difference between the  FIG.  5 B  and  FIG.  5 A  is that the reflective element E 7  of  FIG.  5 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     4th Embodiment 
       FIG.  7 A  is a schematic view of an imaging apparatus  4  according to the 4th embodiment of the present disclosure.  FIG.  8    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  4  according to the 4th embodiment. In  FIG.  7 A , the imaging apparatus  4  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes two inflection points, and the image-side surface of the third lens element E 3  includes two inflection points. 
     The fourth lens element E 4  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the image-side surface of the fourth lens element E 4  includes two inflection points. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes one inflection point and one critical point. 
     According to the 4th embodiment, the reflective element E 7  is a prism, which is made of plastic material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 4th embodiment are shown in Table 4A and the aspheric surface data are shown in Table 4B below. 
     
       
         
           
               
             
               
                 TABLE 4A 
               
             
            
               
                   
               
               
                 4th Embodiment 
               
               
                 f = 2.39 mm, Fno = 2.39, HFOV = 38.2 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −2.3194 
                 ASP 
                 1.040 
                 Plastic 
                 1.545 
                 56.1 
                 61.10 
               
               
                 2 
                   
                 −2.5113 
                 ASP 
                 0.192 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.012 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Plastic 
                 1.793 
                 47.6 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.043 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 1.7870 
                 ASP 
                 0.982 
                 Plastic 
                 1.534 
                 56.0 
                 2.31 
               
               
                 8 
                   
                 −3.2043 
                 ASP 
                 −0.275  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.335 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 11.2322 
                 ASP 
                 0.400 
                 Plastic 
                 1.686 
                 18.4 
                 −2.89 
               
               
                 11 
                   
                 1.6612 
                 ASP 
                 0.200 
               
               
                 12 
                 Lens 4 
                 7.1523 
                 ASP 
                 0.932 
                 Plastic 
                 1.587 
                 28.3 
                 −4.95 
               
               
                 13 
                   
                 1.9684 
                 ASP 
                 0.100 
               
               
                 14 
                 Lens 5 
                 0.5875 
                 ASP 
                 0.300 
                 Plastic 
                 1.686 
                 18.4 
                 2.10 
               
               
                 15 
                   
                 0.7862 
                 ASP 
                 0.320 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.407 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.940 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.150 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 4B 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k= 
                 4.2021300E+00 
                 6.7460200E+00 
                 −1.6687400E+00 
                 4.6254200E+00 
                 7.6213400E+01 
               
               
                 A4= 
                 2.5754534E−02 
                 3.2026843E−02 
                 −1.9555172E−02 
                 −1.2342879E−01  
                 −2.8009284E−01  
               
               
                 A6= 
                 −5.7634697E−02  
                 −1.0796339E−01  
                 −5.7307298E−03 
                 1.1510415E+00 
                 1.3640047E+00 
               
               
                 A8= 
                 4.8836667E−01 
                 1.2877939E+00 
                 −6.3893534E−02 
                 −3.1618788E+00  
                 −3.0148273E+00  
               
               
                 A10= 
                 −1.6203949E+00  
                 −6.1403112E+00  
                  2.5612157E−01 
                 4.6509303E+00 
                 3.4674505E+00 
               
               
                 A12= 
                 3.4372598E+00 
                 1.8802062E+01 
                 −6.2303020E−01 
                 −4.1801707E+00  
                 −2.0995043E+00  
               
               
                 A14= 
                 −4.2370555E+00  
                 −3.5292899E+01  
                  7.8068544E−01 
                 2.2938031E+00 
                 5.2302197E−01 
               
               
                 A16= 
                 2.8004640E+00 
                 3.7583044E+01 
                 −5.1024214E−01 
                 −7.1216691E−01  
                 4.6843087E−02 
               
               
                 A18= 
                 −7.3574851E−01  
                 −1.7154202E+01  
                  1.3349537E−01 
                 9.7061782E−02 
                 −3.4348163E−02  
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k= 
                 −5.1963500E+00 
                 2.0949500E+01 
                 −8.1208000E+01 
                 −4.3676000E+00 
                 −1.9169200E+00 
               
               
                 A4= 
                 −9.6267836E−02 
                 1.0949524E−01 
                 −1.0117025E+00 
                  3.8685856E−01 
                  3.2454713E−01 
               
               
                 A6= 
                  5.6549003E−01 
                 6.6334199E−02 
                  4.3734062E+00 
                 −1.5031964E+00 
                 −2.3868897E+00 
               
               
                 A8= 
                 −4.0156032E−01 
                 7.2934256E−02 
                 −1.4613762E+01 
                  7.6509358E−01 
                  4.4012661E+00 
               
               
                 A10= 
                 −1.1499835E+00 
                 −2.0718294E−01  
                  3.7234400E+01 
                  1.5022129E+00 
                 −4.7438271E+00 
               
               
                 A12= 
                  2.5992042E+00 
                 −1.7557321E−01  
                 −6.7667167E+01 
                 −2.9531723E+00 
                  3.3224246E+00 
               
               
                 A14= 
                 −2.2222517E+00 
                 6.7391291E−01 
                  8.5284796E+01 
                  2.5504403E+00 
                 −1.5198240E+00 
               
               
                 A16= 
                  8.9134683E−01 
                 −6.2908650E−01  
                 −7.2019143E+01 
                 −1.3053266E+00 
                  4.3420777E−01 
               
               
                 A18= 
                 −1.3848739E−01 
                 2.6052707E−01 
                  3.8533688E+01 
                  3.7986547E−01 
                 −6.9220840E−02 
               
               
                 A20= 
                   
                 −4.1877773E−02  
                 −1.1714362E+01 
                 −4.7316040E−02 
                  4.5457277E−03 
               
               
                 A22= 
                   
                   
                  1.5303121E+00 
               
               
                   
               
            
           
         
       
     
     In the 4th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 4th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 4A and Table 4B as the following values and satisfy the following conditions in Table 4C: 
     
       
         
           
               
             
               
                 TABLE 4C 
               
               
                   
               
               
                 4th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 f [mm] 
                 2.39 
                 (R1 − R2)/(R1 + R2) 
                 −0.04 
               
               
                 Fno 
                 2.39 
                 (R3 + R4)/(R3 − R4) 
                 −0.28 
               
               
                 HFOV [degrees] 
                 38.2 
                 (R5 + R6)/(R5 − R6) 
                 1.35 
               
               
                 ATmax/BL 
                 2.50 
                 (R7 − R8)/(R7 + R8) 
                 0.57 
               
               
                 ATmax/Y11 
                 2.55 
                 SL/TL 
                 0.83 
               
               
                 ATmax/f 
                 0.98 
                 T12/f 
                 0.98 
               
               
                 CT1/CTmax 
                 1.00 
                 T12/ImgH 
                 1.30 
               
               
                 (CT2 + T23 + CT3 + 
                 1.24 
                 (T23 + T34 + T45)/ΣAT 
                 0.13 
               
               
                 T34 + CT4 + T45 + CT5)/f 
               
               
                 f/f12 
                 1.21 
                 T45/f 
                 0.04 
               
               
                 f/f2 
                 1.04 
                 TL/f 
                 3.05 
               
               
                 f/f3 
                 −0.83 
                 (TL − SL)/f 
                 0.51 
               
               
                 f/f45 
                 0.55 
                 V1/N1 
                 36.30 
               
               
                 f/ImgH 
                 1.33 
                 V2/N2 
                 36.48 
               
               
                 f/R1 
                 −1.03 
                 V3/N3 
                 10.90 
               
               
                 f/R3 
                 1.34 
                 V4/N4 
                 17.83 
               
               
                 f/R4 
                 −0.75 
                 V5/N5 
                 10.90 
               
               
                 f123/f234 
                 0.45 
                 Y11/ImgH 
                 0.51 
               
               
                 f34/f45 
                 −0.37 
                 Y52/Y11 
                 1.47 
               
               
                 (N3 + N5)/2 
                 1.686 
                 FOV [degrees] 
                 76.3 
               
               
                   
               
            
           
         
       
     
     Please refer to  FIG.  7 B , which is a schematic view of the imaging apparatus  4  with another reflective element E 7  according to the 4th embodiment of the present disclosure. The difference between the  FIG.  7 B  and  FIG.  7 A  is that the reflective element E 7  of  FIG.  7 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     5th Embodiment 
       FIG.  9 A  is a schematic view of an imaging apparatus  5  according to the 5th embodiment of the present disclosure.  FIG.  10    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  5  according to the 5th embodiment. In  FIG.  9 A , the imaging apparatus  5  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes one inflection point, and the image-side surface of the third lens element E 3  includes two inflection points. 
     The fourth lens element E 4  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point, and the image-side surface of the fourth lens element E 4  includes three inflection points. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes two inflection points, and the image-side surface of the fifth lens element E 5  includes five inflection points and three critical points. 
     According to the 5th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 5th embodiment are shown in Table 5A and the aspheric surface data are shown in Table 5B below. 
     
       
         
           
               
             
               
                 TABLE 5A 
               
             
            
               
                   
               
               
                 5th Embodiment 
               
               
                 f = 1.85 mm, Fno = 2.20, HFOV = 44.6 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.3530 
                 ASP 
                 1.150 
                 Plastic 
                 1.545 
                 56.1 
                 −25.79 
               
               
                 2 
                   
                 −1.9460 
                 ASP 
                 0.105 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 1.9975 
                 ASP 
                 0.905 
                 Plastic 
                 1.544 
                 56.0 
                 1.96 
               
               
                 8 
                   
                 −1.9228 
                 ASP 
                 −0.280  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.627 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 −4.5696 
                 ASP 
                 0.501 
                 Plastic 
                 1.686 
                 18.4 
                 −3.64 
               
               
                 11 
                   
                 5.7407 
                 ASP 
                 0.270 
               
               
                 12 
                 Lens 4 
                 −1.7784 
                 ASP 
                 0.476 
                 Plastic 
                 1.566 
                 37.4 
                 −4.94 
               
               
                 13 
                   
                 −5.3623 
                 ASP 
                 0.090 
               
               
                 14 
                 Lens 5 
                 1.4208 
                 ASP 
                 0.320 
                 Plastic 
                 1.544 
                 56.0 
                 2.10 
               
               
                 15 
                   
                 −5.4339 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.393 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.945 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.123 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 5B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k = 
                 −1.0238800E+01 
                 −1.6536100E+01 
                 4.3994800E−01 
                 1.3452300E+00 
                 1.1376000E+01 
               
               
                 A4 = 
                 −3.6574770E−01 
                 −1.7343306E−01 
                 2.4960449E−02 
                 1.7056621E−01 
                 −1.4569041E−02 
               
               
                 A6 = 
                 8.8943387E−01 
                 1.6038426E−01 
                 2.4168644E−02 
                 −4.6318746E−01 
                 −2.0817853E−01 
               
               
                 A8 = 
                 −1.7691457E+00 
                 2.2072972E+00 
                 −1.7418781E−01 
                 1.0935546E+00 
                 −2.2888153E+00 
               
               
                 A10 = 
                 2.6534226E+00 
                 −1.5825211E+01 
                 4.1314743E−01 
                 −1.1579671E+00 
                 9.0334101E+00 
               
               
                 A12 = 
                 −2.7098706E+00 
                 5.4177317E+01 
                 −7.0933088E−01 
                 3.9204771E−02 
                 −1.0093480E+01 
               
               
                 A14 = 
                 1.6944563E+00 
                 −1.0628873E+02 
                 8.3158732E−01 
                 1.2902784E+00 
                 −4.7317739E+00 
               
               
                 A16 = 
                 −5.4952526E−01 
                 1.1665688E+02 
                 −6.2274010E−01 
                 −1.3935501E+00 
                 2.3455935E+01 
               
               
                 A18 = 
                 6.0301374E−02 
                 −5.7157539E+01 
                 2.6999888E−01 
                 6.2030832E−01 
                 −2.5103204E+01 
               
               
                 A20 = 
                   
                   
                 −5.4001629E−02 
                 −1.0355156E−01 
                 1.2247281E+01 
               
               
                 A22 = 
                   
                   
                   
                   
                 −2.3499111E+00 
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 2.2498700E+01 
                 −3.0045800E+01 
                 4.6403900E+00 
                 −7.5979600E−01 
                 0.0000000E+00 
               
               
                 A4 = 
                 −4.9484226E−01 
                 −2.2778719E+00 
                 −1.1006336E+00 
                 1.5800740E+00 
                 2.8242413E+00 
               
               
                 A6 = 
                 3.0811858E+00 
                 1.6468866E+01 
                 2.0327424E+00 
                 −1.1064859E+01 
                 −1.0939134E+01 
               
               
                 A8 = 
                 −7.2797769E+00 
                 −5.5287215E+01 
                 4.5593064E+00 
                 4.3581282E+01 
                 2.2545250E+01 
               
               
                 A10 = 
                 −3.6177308E+00 
                 1.1608551E+02 
                 −2.8118019E+01 
                 −1.3052092E+02 
                 −3.3122098E+01 
               
               
                 A12 = 
                 5.5353879E+01 
                 −1.6499086E+02 
                 6.3830627E+01 
                 2.6346458E+02 
                 3.6411371E+01 
               
               
                 A14 = 
                 −1.3311396E+02 
                 1.6165024E+02 
                 −8.5124940E+01 
                 −3.4342319E+02 
                 −2.7788510E+01 
               
               
                 A16 = 
                 1.6809262E+02 
                 −1.0727861E+02 
                 7.1383172E+01 
                 2.8586814E+02 
                 1.3399043E+01 
               
               
                 A18 = 
                 −1.2264563E+02 
                 4.5834363E+01 
                 −3.6988935E+01 
                 −1.4716607E+02 
                 −3.6221372E+00 
               
               
                 A20 = 
                 4.8799996E+01 
                 −1.1321235E+01 
                 1.0818510E+01 
                 4.2729428E+01 
                 4.1696129E−01 
               
               
                 A22 = 
                 −8.1991247E+00 
                 1.2235799E+00 
                 −1.3638692E+00 
                 −5.3480560E+00 
                 −4.8407672E−05 
               
               
                   
               
            
           
         
       
     
     In the 5th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 5th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 5A and Table 5B as the following values and satisfy the following conditions in Table 5C: 
     
       
         
           
               
             
               
                 TABLE 5C 
               
               
                   
               
               
                 5th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 1.85 
               
               
                   
                 Fno 
                 2.20 
               
               
                   
                 HFOV [degrees] 
                 44.6 
               
               
                   
                 ATmax/BL 
                 2.38 
               
               
                   
                 ATmax/Y11 
                 2.49 
               
               
                   
                 ATmax/f 
                 1.22 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 1.58 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.21 
               
               
                   
                 f/f2 
                 0.94 
               
               
                   
                 f/f3 
                 −0.51 
               
               
                   
                 f/f45 
                 0.61 
               
               
                   
                 f/ImgH 
                 1.03 
               
               
                   
                 f/R1 
                 −1.36 
               
               
                   
                 f/R3 
                 0.92 
               
               
                   
                 f/R4 
                 −0.96 
               
               
                   
                 f123/f234 
                 0.58 
               
               
                   
                 f34/f45 
                 −0.67 
               
               
                   
                 (N3 + N5)/2 
                 1.615 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 −0.18 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 0.02 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 −0.11 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 −0.50 
               
               
                   
                 SL/TL 
                 0.83 
               
               
                   
                 T12/f 
                 1.22 
               
               
                   
                 T12/ImgH 
                 1.25 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.24 
               
               
                   
                 T45/f 
                 0.05 
               
               
                   
                 TL/f 
                 3.93 
               
               
                   
                 (TL − SL)/f 
                 0.68 
               
               
                   
                 V1/N1 
                 36.30 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 10.90 
               
               
                   
                 V4/N4 
                 23.91 
               
               
                   
                 V5/N5 
                 36.26 
               
               
                   
                 Y11/ImgH 
                 0.50 
               
               
                   
                 Y52/Y11 
                 1.43 
               
               
                   
                 FOV [degrees] 
                 89.1 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  9 B , which is a schematic view of the imaging apparatus  5  with another reflective element E 7  according to the 5th embodiment of the present disclosure. The difference between the  FIG.  9 B  and  FIG.  9 A  is that the reflective element E 7  of  FIG.  9 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     6th Embodiment 
       FIG.  11 A  is a schematic view of an imaging apparatus  6  according to the 6th embodiment of the present disclosure.  FIG.  12    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  6  according to the 6th embodiment. In  FIG.  11 A , the imaging apparatus  6  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes one inflection point, and the image-side surface of the third lens element E 3  includes two inflection points. 
     The fourth lens element E 4  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point, and the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes three inflection points and one critical point. 
     According to the 6th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 6th embodiment are shown in Table 6A and the aspheric surface data are shown in Table 6B below. 
     
       
         
           
               
             
               
                 TABLE 6A 
               
             
            
               
                   
               
               
                 6th Embodiment 
               
               
                 f = 1.87 mm, Fno = 2.20, HFOV = 45.0 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.5874 
                 ASP 
                 1.150 
                 Plastic 
                 1.716 
                 16.6 
                 54.16 
               
               
                 2 
                   
                 −1.9860 
                 ASP 
                 0.105 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.947 
                 18.0 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 2.0229 
                 ASP 
                 0.898 
                 Plastic 
                 1.544 
                 56.0 
                 1.96 
               
               
                 8 
                   
                 −1.9007 
                 ASP 
                 −0.260  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.485 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 −4.5387 
                 ASP 
                 0.465 
                 Plastic 
                 1.686 
                 18.4 
                 −3.64 
               
               
                 11 
                   
                 5.7765 
                 ASP 
                 0.263 
               
               
                 12 
                 Lens 4 
                 −1.3844 
                 ASP 
                 0.421 
                 Plastic 
                 1.544 
                 56.0 
                 19.12 
               
               
                 13 
                   
                 −1.3527 
                 ASP 
                 0.090 
               
               
                 14 
                 Lens 5 
                 2.4079 
                 ASP 
                 0.300 
                 Plastic 
                 1.686 
                 18.4 
                 5.65 
               
               
                 15 
                   
                 6.0310 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.379 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.870 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.120 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 6B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface# 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k = 
                 −1.2679400E+01 
                 −1.5925500E+01 
                 7.1437300E−01 
                 1.2845300E+00 
                 1.1142400E+01 
               
               
                 A4 = 
                 −2.9338701E−01 
                 −1.7347126E−01 
                 5.5729178E−02 
                 2.7380355E−01 
                 5.1410685E−01 
               
               
                 A6 = 
                 6.4049813E−01 
                 1.1986064E−01 
                 −2.2239106E−01 
                 −1.7583082E+00 
                 −5.5219590E+00 
               
               
                 A8 = 
                 −1.2209479E+00 
                 2.5680725E+00 
                 9.5860150E−01 
                 5.7962644E+00 
                 1.7551511E+01 
               
               
                 A10 = 
                 1.9079473E+00 
                 −2.0479736E+01 
                 −2.3523472E+00 
                 −8.8045343E+00 
                 −2.7826148E+01 
               
               
                 A12 = 
                 −2.1794373E+00 
                 8.1519085E+01 
                 3.5002904E+00 
                 5.9692521E+00 
                 2.4292789E+01 
               
               
                 A14 = 
                 1.5856102E+00 
                 −1.8512669E+02 
                 −3.3324156E+00 
                 −1.1238228E−01 
                 −1.3091689E+01 
               
               
                 A16 = 
                 −5.8836567E−01 
                 2.2694787E+02 
                 1.9654721E+00 
                 −2.3277576E+00 
                 8.3705459E+00 
               
               
                 A18 = 
                 6.1836509E−02 
                 −1.1638875E+02 
                 −6.3889005E−01 
                 1.2944783E+00 
                 −7.8038966E+00 
               
               
                 A20 = 
                   
                   
                 8.1994616E−02 
                 −2.2745175E−01 
                 4.4001952E+00 
               
               
                 A22 = 
                   
                   
                   
                   
                 −9.4062826E−01 
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 2.0192900E+01 
                 −3.8524900E+01 
                 0.0000000E+00 
                 0.0000000E+00 
                 0.0000000E+00 
               
               
                 A4 = 
                 6.5874805E−01 
                 −2.0545104E+00 
                 −1.4872259E+00 
                 2.9255431E−01 
                 1.7178631E+00 
               
               
                 A6 = 
                 −5.6269852E+00 
                 1.5002571E+01 
                 9.3249190E+00 
                 −5.2049272E−01 
                 −7.7007219E+00 
               
               
                 A8 = 
                 2.4521740E+01 
                 −5.1644065E+01 
                 −2.8431259E+01 
                 −3.7992053E+00 
                 1.6239806E+01 
               
               
                 A10 = 
                 −7.1272606E+01 
                 1.1766493E+02 
                 5.6763715E+01 
                 7.1034867E+00 
                 −2.2120406E+01 
               
               
                 A12 = 
                 1.3857415E+02 
                 −1.9194009E+02 
                 −4.8080329E+01 
                 4.2159297E+00 
                 2.0678353E+01 
               
               
                 A14 = 
                 −1.7931395E+02 
                 2.2180052E+02 
                 −9.7476515E+01 
                 −2.6211070E+01 
                 −1.2928292E+01 
               
               
                 A16 = 
                 1.5243635E+02 
                 −1.7385687E+02 
                 4.1962942E+02 
                 3.5570696E+01 
                 5.0465964E+00 
               
               
                 A18 = 
                 −8.1659279E+01 
                 8.6909946E+01 
                 −7.7317354E+02 
                 −2.4146236E+01 
                 −1.0603828E+00 
               
               
                 A20 = 
                 2.4999460E+01 
                 −2.4862126E+01 
                 9.2026319E+02 
                 8.4359213E+00 
                 5.9556706E−02 
               
               
                 A22 = 
                 −3.3482546E+00 
                 3.0894934E+00 
                 −7.6628641E+02 
                 −1.2043807E+00 
                 1.6836846E−02 
               
               
                 A24 = 
                   
                   
                 4.4759019E+02 
                 5.0933650E−05 
                 −3.0903581E−03 
               
               
                 A26 = 
                   
                   
                 −1.7526296E+02 
                   
                 2.5584608E−04 
               
               
                 A28 = 
                   
                   
                 4.1289768E+01 
                   
                   
               
               
                 A30 = 
                   
                   
                 −4.4192073E+00 
               
               
                   
               
            
           
         
       
     
     In the 6th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 6th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 6A and Table 6B as the following values and satisfy the following conditions in Table 6C: 
     
       
         
           
               
             
               
                 TABLE 6C 
               
               
                   
               
               
                 6th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 1.87 
               
               
                   
                 Fno 
                 2.20 
               
               
                   
                 HFOV [degrees] 
                 45.0 
               
               
                   
                 ATmax/BL 
                 2.42 
               
               
                   
                 ATmax/Y11 
                 2.56 
               
               
                   
                 ATmax/f 
                 1.20 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 1.42 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.25 
               
               
                   
                 f/f2 
                 0.96 
               
               
                   
                 f/f3 
                 −0.52 
               
               
                   
                 f/f45 
                 0.47 
               
               
                   
                 f/ImgH 
                 1.04 
               
               
                   
                 f/R1 
                 −1.18 
               
               
                   
                 f/R3 
                 0.93 
               
               
                   
                 f/R4 
                 −0.99 
               
               
                   
                 f123/f234 
                 0.73 
               
               
                   
                 f34/f45 
                 −1.33 
               
               
                   
                 (N3 + N5)/2 
                 1.686 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 −0.11 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 0.03 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 −0.12 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 0.01 
               
               
                   
                 SL/TL 
                 0.82 
               
               
                   
                 T12/f 
                 1.20 
               
               
                   
                 T12/ImgH 
                 1.25 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.20 
               
               
                   
                 T45/f 
                 0.05 
               
               
                   
                 TL/f 
                 3.73 
               
               
                   
                 (TL − SL)/f 
                 0.67 
               
               
                   
                 V1/N1 
                 9.68 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 10.90 
               
               
                   
                 V4/N4 
                 36.26 
               
               
                   
                 V5/N5 
                 10.90 
               
               
                   
                 Y11/ImgH 
                 0.49 
               
               
                   
                 Y52/Y11 
                 1.47 
               
               
                   
                 FOV [degrees] 
                 90.0 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  11 B , which is a schematic view of the imaging apparatus  6  with another reflective element E 7  according to the 6th embodiment of the present disclosure. The difference between the  FIG.  11 B  and  FIG.  11 A  is that the reflective element E 7  of  FIG.  11 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     7th Embodiment 
       FIG.  13 A  is a schematic view of an imaging apparatus  7  according to the 7th embodiment of the present disclosure.  FIG.  14    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  7  according to the 7th embodiment. In  FIG.  13 A , the imaging apparatus  7  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes one inflection point, and the image-side surface of the third lens element E 3  includes three inflection points. 
     The fourth lens element E 4  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point, and the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes two inflection points, and the image-side surface of the fifth lens element E 5  includes two inflection points and one critical point. 
     According to the 7th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 7th embodiment are shown in Table 7A and the aspheric surface data are shown in Table 7B below. 
     
       
         
           
               
             
               
                 TABLE 7A 
               
             
            
               
                   
               
               
                 7th Embodiment 
               
               
                 f = 1.98 mm, Fno = 2.20, HFOV = 43.3 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.3468 
                 ASP 
                 1.135 
                 Plastic 
                 1.545 
                 56.1 
                 64.33 
               
               
                 2 
                   
                 −1.6825 
                 ASP 
                 0.050 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 2.1565 
                 ASP 
                 0.903 
                 Plastic 
                 1.544 
                 56.0 
                 1.94 
               
               
                 8 
                   
                 −1.7690 
                 ASP 
                 −0.270  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.606 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 −3.9065 
                 ASP 
                 0.571 
                 Plastic 
                 1.686 
                 18.4 
                 −10.40 
               
               
                 11 
                   
                 −9.1491 
                 ASP 
                 0.200 
               
               
                 12 
                 Lens 4 
                 −0.7023 
                 ASP 
                 0.468 
                 Plastic 
                 1.544 
                 56.0 
                 35.66 
               
               
                 13 
                   
                 −0.8369 
                 ASP 
                 0.090 
               
               
                 14 
                 Lens 5 
                 11.0237 
                 ASP 
                 0.300 
                 Plastic 
                 1.686 
                 18.4 
                 15.81 
               
               
                 15 
                   
                 −671.0002 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.301 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.890 mm 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.120 mm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 7B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k= 
                 −9.2798400E+00 
                 −1.3934500E+01 
                 9.7017700E−01 
                 9.0357600E−01 
                 9.2905300E+00 
               
               
                 A4 = 
                 −3.4161952E−01 
                 −2.4619081E−01 
                 5.0490128E−02 
                 1.7887831E−01 
                 1.7409314E−01 
               
               
                 A6 = 
                 7.5260165E−01 
                 4.2523150E−01 
                 −1.9902537E−02 
                 −5.4224012E−01 
                 −1.3422875E+00 
               
               
                 A8 = 
                 −1.3416492E+00 
                 1.3986590E+00 
                 −1.3145575E−01 
                 1.3676214E+00 
                 −1.5795860E+00 
               
               
                 A10 = 
                 1.8472559E+00 
                 −1.5296014E+01 
                 6.2793528E−01 
                 −1.4517911E+00 
                 2.0074297E+01 
               
               
                 A12 = 
                 −1.7761829E+00 
                 6.2579994E+01 
                 −1.4913474E+00 
                 3.3537023E−01 
                 −5.1625292E+01 
               
               
                 A14 =  
                 1.0766197E+00 
                 −1.4040571E+02 
                 2.0402429E+00 
                 6.0593538E−01 
                 6.8510397E+01 
               
               
                 A16 = 
                 −3.4752874E−01 
                 1.6902061E+02 
                 −1.6606976E+00 
                 −4.7847275E−01 
                 −5.2662413E+01 
               
               
                 A18 = 
                 3.8219652E−02 
                 −8.5525244E+01 
                 7.5595239E−01 
                 8.5970434E−02 
                 2.3415449E+01 
               
               
                 A20 = 
                   
                   
                 −1.5042692E−01 
                 9.6516660E−03 
                 −5.5962180E+00 
               
               
                 A22 = 
                   
                   
                   
                   
                 5.7968636E−01 
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 0.0000000E+00 
                 −1.0000000E+00 
                 −1.0000000E+00 
                 0.0000000E+00 
                 0.0000000E+00 
               
               
                 A4 = 
                 6.4287264E−01 
                 1.1049946E+00 
                 −1.4939281E+00 
                 −1.6018034E+00 
                 2.6910882E−02 
               
               
                 A6 = 
                 −2.5622642E+00 
                 −6.3690302E+00 
                 8.8814654E+00 
                 7.0247091E+00 
                 −1.1904713E+00 
               
               
                 A8 = 
                 7.4640600E+00 
                 7.5963943E+01 
                 −2.3239897E+01 
                 −1.9434666E+01 
                 4.5205906E+00 
               
               
                 A10 = 
                 −2.4020492E+01 
                 −4.8957832E+02 
                 4.0054733E+01 
                 3.6116407E+01 
                 −8.9898481E+00 
               
               
                 A12 = 
                 5.7989965E+01 
                 2.0062112E+03 
                 −2.9899375E+01 
                 −4.6501473E+01 
                 1.0728964E+01 
               
               
                 A14 = 
                 −8.4473520E+01 
                 −5.7655683E+03 
                 −5.5495206E+01 
                 4.0789948E+01 
                 −7.8486293E+00 
               
               
                 A16 = 
                 7.0592246E+01 
                 1.2105808E+04 
                 2.1751869E+02 
                 −2.2907582E+01 
                 3.4508976E+00 
               
               
                 A18 = 
                 −3.1239318E+01 
                 −1.8813046E+04 
                 −3.7178523E+02 
                 7.3390708E+00 
                 −8.3977230E−01 
               
               
                 A20 = 
                 5.6750418E+00 
                 2.1582503E+04 
                 4.1859802E+02 
                 −1.0141262E+00 
                 8.7141764E−02 
               
               
                 A22 = 
                 −1.5344462E−05 
                 −1.8009484E+04 
                 −3.3574036E+02 
                   
                 −6.1315917E−08 
               
               
                 A24 = 
                   
                 1.0611874E+04 
                 1.9108238E+02 
                   
                   
               
               
                 A26 = 
                   
                 −4.1804115E+03 
                 −7.3271956E+01 
                   
                   
               
               
                 A28 = 
                   
                 9.8722420E+02 
                 1.6938852E+01 
                   
                   
               
               
                 A30 = 
                   
                 −1.0562725E+02 
                 −1.7817125E+00 
               
               
                   
               
            
           
         
       
     
     In the 7th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 7th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 7A and Table 7B as the following values and satisfy the following conditions in Table 7C: 
     
       
         
           
               
             
               
                 TABLE 7C 
               
               
                   
               
               
                 7th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 1.98 
               
               
                   
                 Fno 
                 2.20 
               
               
                   
                 HFOV [degrees] 
                 43.3 
               
               
                   
                 ATmax/BL 
                 2.57 
               
               
                   
                 ATmax/Y11 
                 2.41 
               
               
                   
                 ATmax/f 
                 1.11 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 1.45 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.33 
               
               
                   
                 f/f2 
                 1.02 
               
               
                   
                 f/f3 
                 −0.19 
               
               
                   
                 f/f45 
                 0.21 
               
               
                   
                 f/ImgH 
                 1.10 
               
               
                   
                 f/R1 
                 −1.47 
               
               
                   
                 f/R3 
                 0.92 
               
               
                   
                 f/R4 
                 −1.12 
               
               
                   
                 f123/f234 
                 0.64 
               
               
                   
                 f34/f45 
                 −2.26 
               
               
                   
                 (N3 + N5)/2 
                 1.686 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 −0.11 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 0.10 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 −2.49 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 −0.09 
               
               
                   
                 SL/TL 
                 0.83 
               
               
                   
                 T12/f 
                 1.11 
               
               
                   
                 T12/ImgH 
                 1.22 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.22 
               
               
                   
                 T45/f 
                 0.05 
               
               
                   
                 TL/f 
                 3.56 
               
               
                   
                 (TL − SL)/f 
                 0.60 
               
               
                   
                 V1/N1 
                 36.30 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 10.90 
               
               
                   
                 V4/N4 
                 36.26 
               
               
                   
                 V5/N5 
                 10.90 
               
               
                   
                 Y11/ImgH 
                 0.50 
               
               
                   
                 Y52/Y11 
                 1.38 
               
               
                   
                 FOV [degrees] 
                 86.6 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  13 B , which is a schematic view of the imaging apparatus  7  with another reflective element E 7  according to the 7th embodiment of the present disclosure. The difference between the  FIG.  13 B  and  FIG.  13 A  is that the reflective element E 7  of  FIG.  13 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     8th Embodiment 
       FIG.  15 A  is a schematic view of an imaging apparatus  8  according to the 8th embodiment of the present disclosure.  FIG.  16    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  8  according to the 8th embodiment. In  FIG.  15 A , the imaging apparatus  8  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes three inflection points, and the image-side surface of the third lens element E 3  includes three inflection points. 
     The fourth lens element E 4  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point, and the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes two inflection points, and the image-side surface of the fifth lens element E 5  includes three inflection points and two critical points. 
     According to the 8th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 8th embodiment are shown in Table 8A and the aspheric surface data are shown in Table 8B below. 
     
       
         
           
               
             
               
                 TABLE 8A 
               
             
            
               
                   
               
               
                 8th Embodiment 
               
               
                 f = 1.99 mm, Fno = 2.21, HFOV = 43.1 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.2990 
                 ASP 
                 1.149 
                 Plastic 
                 1.535 
                 55.9 
                 23.93 
               
               
                 2 
                   
                 −1.5426 
                 ASP 
                 0.050 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 2.1338 
                 ASP 
                 1.146 
                 Plastic 
                 1.534 
                 56.0 
                 2.19 
               
               
                 8 
                   
                 −2.1137 
                 ASP 
                 −0.270  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.360 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 16.6667 
                 ASP 
                 0.422 
                 Plastic 
                 1.686 
                 18.4 
                 12.63 
               
               
                 11 
                   
                 −17.8571 
                 ASP 
                 0.250 
               
               
                 12 
                 Lens 4 
                 −0.6971 
                 ASP 
                 0.692 
                 Plastic 
                 1.544 
                 56.0 
                 56.61 
               
               
                 13 
                   
                 −0.9201 
                 ASP 
                 0.070 
               
               
                 14 
                 Lens 5 
                 6.4119 
                 ASP 
                 0.302 
                 Plastic 
                 1.686 
                 18.4 
                 −27.50 
               
               
                 15 
                   
                 4.6940 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.273 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.945 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.100 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 8B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k = 
                 −8.4369400E+00 
                 −1.0679200E+01 
                 9.3747800E−01 
                 1.5554700E+00 
                 −9.0000000E+01 
               
               
                 A4 = 
                 −3.5933085E−01 
                 −2.6953967E−01 
                 3.0671594E−02 
                 7.3372644E−02 
                 3.0501101E−01 
               
               
                 A6 = 
                 7.7394605E−01 
                 6.8386618E−01 
                 1.1627672E−01 
                 −1.8462013E+00 
                 −4.3652625E+00 
               
               
                 A8 = 
                 −1.5374349E+00 
                 −2.1407299E+00 
                 −4.8151559E−01 
                 9.3895124E+00 
                 1.3441609E+01 
               
               
                 A10 = 
                 2.5986088E+00 
                 8.2478708E+00 
                 1.1191194E+00 
                 −2.1518748E+01 
                 −1.7331686E+01 
               
               
                 A12 = 
                 −3.23699615+00 
                 −2.6465282E+01 
                 −1.8597396E+00 
                 2.8321380E+01 
                 2.4980988E+00 
               
               
                 A14 = 
                 2.5482814E+00 
                 5.2677976E+01 
                 2.1437555E+00 
                 −2.2839263E+01 
                 2.0205189E+01 
               
               
                 A16 = 
                 −1.0274148E+00 
                 −5.3984970E+01 
                 −1.6169253E+00 
                 1.1216039E+01 
                 −2.5213519E+01 
               
               
                 A18 = 
                 1.2612686E−01 
                 2.0645212E+01 
                 7.1273882E−01 
                 −3.1060745E+00 
                 1.2826919E+01 
               
               
                 A20 = 
                   
                   
                 −1.3961376E−01 
                 3.7560468E−01 
                 −2.4930061E+00 
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 7.4474200E+01 
                 −8.7327500E+00 
                 −5.9048400E+00 
                 2.2298800E+01 
                 −9.0000000E+01 
               
               
                 A4 = 
                 1.3052512E+00 
                 −2.6568480E−02 
                 −1.9677687E+00 
                 −2.4158741E+00 
                 −8.2172763E−01 
               
               
                 A6 = 
                 −7.8788858E+00 
                 3.6107486E−01 
                 9.7987597E+00 
                 8.0527536E+00 
                 2.3508193E+00 
               
               
                 A8 = 
                 2.6909511E+01 
                 3.2578899E+00 
                 −3.2690191E+01 
                 −1.2938590E+01 
                 −3.3425041E+00 
               
               
                 A10 = 
                 −6.3875565E+01 
                 −1.8871143E+01 
                 9.4335674E+01 
                 7.1777966E+00 
                 1.9734897E+00 
               
               
                 A12 = 
                 1.1271505E+02 
                 4.9706146E+01 
                 −2.0763342E+02 
                 8.6160168E+00 
                 9.1731982E−01 
               
               
                 A14 = 
                 −1.4125816E+02 
                 −7.5091757E+01 
                 3.1450947E+02 
                 −1.7964190E+01 
                 −2.2334185E+00 
               
               
                 A16 = 
                 1.1445573E+02 
                 6.5682908E+01 
                 −3.1102459E+02 
                 1.3252150E+01 
                 1.4512114E+00 
               
               
                 A18 = 
                 −5.2442729E+01 
                 −3.0782651E+01 
                 1.9099759E+02 
                 −4.6790948E+00 
                 −4.3139782E−01 
               
               
                 A20 = 
                 1.0202401E+01 
                 5.9706882E+00 
                 −6.6069235E+01 
                 6.5925326E−01 
                 5.0078080E−02 
               
               
                 A22 = 
                   
                   
                 9.8416809E+00 
               
               
                   
               
            
           
         
       
     
     In the 8th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 8th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 8A and Table 8B as the following values and satisfy the following conditions in Table 8C: 
     
       
         
           
               
             
               
                 TABLE 8C 
               
               
                   
               
               
                 8th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 1.99 
               
               
                   
                 Fno 
                 2.21 
               
               
                   
                 HFOV [degrees] 
                 43.1 
               
               
                   
                 ATmax/BL 
                 2.66 
               
               
                   
                 ATmax/Y11 
                 2.47 
               
               
                   
                 ATmax/f 
                 1.10 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 1.49 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.21 
               
               
                   
                 f/f2 
                 0.91 
               
               
                   
                 f/f3 
                 0.16 
               
               
                   
                 f/f45 
                 −0.06 
               
               
                   
                 f/ImgH 
                 1.10 
               
               
                   
                 f/R1 
                 −1.53 
               
               
                   
                 f/R3 
                 0.93 
               
               
                   
                 f/R4 
                 −0.94 
               
               
                   
                 f123/f234 
                 0.57 
               
               
                   
                 f34/f45 
                 −0.41 
               
               
                   
                 (N3 + N5)/2 
                 1.686 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 −0.09 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 0.00 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 −0.03 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 −0.14 
               
               
                   
                 SL/TL 
                 0.83 
               
               
                   
                 T12/f 
                 1.10 
               
               
                   
                 T12/ImgH 
                 1.22 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.16 
               
               
                   
                 T45/f 
                 0.04 
               
               
                   
                 TL/f 
                 3.59 
               
               
                   
                 (TL − SL)/f 
                 0.60 
               
               
                   
                 V1/N1 
                 36.46 
               
               
                   
                 V2/N2 
                 36.48 
               
               
                   
                 V3/N3 
                 10.90 
               
               
                   
                 V4/N4 
                 36.26 
               
               
                   
                 V5/N5 
                 10.90 
               
               
                   
                 Y11/ImgH 
                 0.49 
               
               
                   
                 Y52/Y11 
                 1.44 
               
               
                   
                 FOV [degrees] 
                 86.2 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  15 B , which is a schematic view of the imaging apparatus  8  with another reflective element E 7  according to the 8th embodiment of the present disclosure. The difference between the  FIG.  15 B  and  FIG.  15 A  is that the reflective element E 7  of  FIG.  15 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     9th Embodiment 
       FIG.  17 A  is a schematic view of an imaging apparatus  9  according to the 9th embodiment of the present disclosure.  FIG.  18    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  9  according to the 9th embodiment. In  FIG.  17 A , the imaging apparatus  9  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point, and the image-side surface of the second lens element E 2  includes two inflection points. 
     The third lens element E 3  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes one inflection point. 
     The fourth lens element E 4  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point, and the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes three inflection points and two critical points. 
     According to the 9th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 9th embodiment are shown in Table 9A and the aspheric surface data are shown in Table 9B below. 
     
       
         
           
               
             
               
                 TABLE 9A 
               
             
            
               
                   
               
               
                 9th Embodiment 
               
               
                 f = 2.20 mm, Fno = 2.12, HFOV = 40.3 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.2247 
                 ASP 
                 1.147 
                 Plastic 
                 1.545 
                 56.1 
                 17.63 
               
               
                 2 
                   
                 −1.4451 
                 ASP 
                 0.050 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.100 
               
               
                 6 
                 Stop 
                 Plano 
                 0.030 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 1.9825 
                 ASP 
                 0.884 
                 Plastic 
                 1.544 
                 56.0 
                 2.06 
               
               
                 8 
                   
                 −2.1699 
                 ASP 
                 −0.280  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.383 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 −6.6004 
                 ASP 
                 0.850 
                 Plastic 
                 1.660 
                 20.4 
                 −6.13 
               
               
                 11 
                   
                 10.9933 
                 ASP 
                 0.329 
               
               
                 12 
                 Lens 4 
                 −0.8493 
                 ASP 
                 0.434 
                 Plastic 
                 1.566 
                 37.4 
                 3.06 
               
               
                 13 
                   
                 −0.6753 
                 ASP 
                 0.070 
               
               
                 14 
                 Lens 5 
                 −9.5510 
                 ASP 
                 0.300 
                 Plastic 
                 1.686 
                 18.4 
                 −2.97 
               
               
                 15 
                   
                 2.6221 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.207 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.960 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.100 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 9B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k = 
                 −7.8319500E+00 
                 −9.3160300E+00 
                 8.5683100E−01 
                 1.4637900E+00 
                 −9.0000000E+01 
               
               
                 A4 = 
                 −4.2584496E−01 
                 −2.9334832E−01 
                 4.3318630E−02 
                 −1.1911074E−01 
                 −2.5985494E−01 
               
               
                 A6 = 
                 9.1924453E−01 
                 6.3934422E−01 
                 −6.2900157E−02 
                 3.0009414E−01 
                 1.1468238E−02 
               
               
                 A8 = 
                 −1.7939212E+00 
                 −1.3409251E+00 
                 1.4560253E−01 
                 5.9634105E−03 
                 1.9595623E+00 
               
               
                 A10 = 
                 2.7726573E+00 
                 2.5010400E+00 
                 −3.8586064E−01 
                 −1.2276856E+00 
                 −8.5137924E+00 
               
               
                 A12 = 
                 −2.9664501E+00 
                 −3.5993241E+00 
                 5.8001143E−01 
                 2.9699307E+00 
                 1.9976507E+01 
               
               
                 A14 = 
                 1.9628353E+00 
                 3.4775901E+00 
                 −4.9551334E−01 
                 −3.6076993E+00 
                 −2.8489447E+01 
               
               
                 A16 = 
                 −6.7468447E−01 
                 −1.8402214E+00 
                 2.1774168E−01 
                 2.5129063E+00 
                 2.5544031E+01 
               
               
                 A18 = 
                 7.6509584E−02 
                 3.4015013E−01 
                 −2.6652457E−02 
                 −9.5827071E−01 
                 −1.4132200E+01 
               
               
                 A20 = 
                   
                   
                 −8.1362537E−03 
                 1.5416271E−01 
                 4.3994917E+00 
               
               
                 A22 = 
                   
                   
                   
                   
                 −5.8503693E−01 
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 1.9929100E+01 
                 −6.5828600E+00 
                 −7.4279200E+00 
                 −8.9998800E+01 
                 −8.9996900E+01 
               
               
                 A4 = 
                 1.5275507E−01 
                 1.3312904E−01 
                 −1.7180862E+00 
                 −1.3049560E+00 
                 −9.4140723E−01 
               
               
                 A6 = 
                 −1.3638044E+00 
                 −2.7517365E+00 
                 7.7257136E+00 
                 −4.5669625E−02 
                 1.1680368E+00 
               
               
                 A8 = 
                 9.6038737E+00 
                 2.6984024E+01 
                 −2.3315703E+01 
                 1.5268960E+01 
                 1.0518532E+00 
               
               
                 A10 = 
                 −3.4862679E+01 
                 −1.0815939E+02 
                 6.5063054E+01 
                 −5.1557196E+01 
                 −4.7341206E+00 
               
               
                 A12 = 
                 7.6562168E+01 
                 2.5953959E+02 
                 −1.3203960E+02 
                 9.3502803E+01 
                 6.8729111E+00 
               
               
                 A14 = 
                 −1.1061802E+02 
                 −4.1233570E+02 
                 1.7496603E+02 
                 −1.0712069E+02 
                 −5.7335170E+00 
               
               
                 A16 = 
                 1.0618358E+02 
                 4.3440153E+02 
                 −1.4790174E+02 
                 7.9527476E+01 
                 2.9150571E+00 
               
               
                 A18 = 
                 −6.3922670E+01 
                 −2.8877379E+02 
                 7.7330885E+01 
                 −3.7172941E+01 
                 −8.7462062E−01 
               
               
                 A20 = 
                 2.1386751E+01 
                 1.0875982E+02 
                 −2.2925977E+01 
                 9.9627795E+00 
                 1.3962082E−01 
               
               
                 A22 = 
                 −2.9922489E+00 
                 −1.7593951E+01 
                 2.9657916E+00 
                 −1.1696543E+00 
                 −9.0293142E−03 
               
               
                   
               
            
           
         
       
     
     In the 9th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 9th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 9A and Table 9B as the following values and satisfy the following conditions in Table 9C: 
     
       
         
           
               
             
               
                 TABLE 9C 
               
               
                   
               
               
                 9th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 2.20 
               
               
                   
                 Fno 
                 2.12 
               
               
                   
                 HFOV [degrees] 
                 40.3 
               
               
                   
                 ATmax/BL 
                 2.89 
               
               
                   
                 ATmax/Y11 
                 2.36 
               
               
                   
                 ATmax/f 
                 1.00 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 1.35 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.45 
               
               
                   
                 f/f2 
                 1.07 
               
               
                   
                 f/f3 
                 −0.36 
               
               
                   
                 f/f45 
                 −0.11 
               
               
                   
                 f/ImgH 
                 1.22 
               
               
                   
                 f/R1 
                 −1.79 
               
               
                   
                 f/R3 
                 1.11 
               
               
                   
                 f/R4 
                 −1.01 
               
               
                   
                 f123/f234 
                 0.83 
               
               
                   
                 f34/f45 
                 −0.21 
               
               
                   
                 (N3 + N5)/2 
                 1.673 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 −0.08 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 −0.05 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 −0.25 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 0.11 
               
               
                   
                 SL/TL 
                 0.83 
               
               
                   
                 T12/f 
                 1.00 
               
               
                   
                 T12/ImgH 
                 1.22 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.19 
               
               
                   
                 T45/f 
                 0.03 
               
               
                   
                 TL/f 
                 3.21 
               
               
                   
                 (TL − SL)/f 
                 0.54 
               
               
                   
                 V1/N1 
                 36.30 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 12.29 
               
               
                   
                 V4/N4 
                 23.91 
               
               
                   
                 V5/N5 
                 10.90 
               
               
                   
                 Y11/ImgH 
                 0.52 
               
               
                   
                 Y52/Y11 
                 1.34 
               
               
                   
                 FOV [degrees] 
                 80.6 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  17 B , which is a schematic view of the imaging apparatus  9  with another reflective element E 7  according to the 9th embodiment of the present disclosure. The difference between the  FIG.  17 B  and  FIG.  17 A  is that the reflective element E 7  of  FIG.  17 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     10th Embodiment 
       FIG.  19 A  is a schematic view of an imaging apparatus  10  according to the 10th embodiment of the present disclosure.  FIG.  20    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  10  according to the 10th embodiment. In  FIG.  19 A , the imaging apparatus  10  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a glass material, and has the object-side surface and the image-side surface being both aspheric. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes one inflection point, and the image-side surface of the third lens element E 3  includes four inflection points. 
     The fourth lens element E 4  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes three inflection points, and the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes one inflection point and one critical point. 
     According to the 10th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 10th embodiment are shown in Table 10A and the aspheric surface data are shown in Table 10B below. 
     
       
         
           
               
             
               
                 TABLE 10A 
               
             
            
               
                   
               
               
                 10th Embodiment 
               
               
                 f = 2.19 mm, Fno = 2.32, HFOV = 39.2 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.8367 
                 ASP 
                 1.050 
                 Glass 
                 1.744 
                 44.8 
                 4.99 
               
               
                 2 
                   
                 −1.5288 
                 ASP 
                 0.114 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.010 
               
               
                 6 
                 Stop 
                 Plano 
                 0.120 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 2.2604 
                 ASP 
                 0.866 
                 Plastic 
                 1.544 
                 56.0 
                 2.34 
               
               
                 8 
                   
                 −2.5233 
                 ASP 
                 −0.260  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.350 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 −14.6201 
                 ASP 
                 0.230 
                 Plastic 
                 1.698 
                 14.5 
                 −2.81 
               
               
                 11 
                   
                 2.2799 
                 ASP 
                 0.300 
               
               
                 12 
                 Lens 4 
                 −1.2458 
                 ASP 
                 0.243 
                 Plastic 
                 1.587 
                 28.3 
                 −3.18 
               
               
                 13 
                   
                 −4.0202 
                 ASP 
                 0.090 
               
               
                 14 
                 Lens 5 
                 0.4805 
                 ASP 
                 0.320 
                 Plastic 
                 1.543 
                 56.5 
                 2.22 
               
               
                 15 
                   
                 0.6106 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.215 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.875 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.150 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 10B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k = 
                 2.2123300E+00 
                 1.8571300E+00 
                 1.1193600E+00 
                 2.7774600E+00 
                 −8.9993600E+01 
               
               
                 A4 = 
                 −8.0949195E−03 
                 1.1712820E−01 
                 7.4219290E−02 
                 2.9843250E−01 
                 −8.4938603E−01 
               
               
                 A6 = 
                 3.9176838E−01 
                 −2.3095483E−01 
                 −4.4973169E−03 
                 6.0060380E−01 
                 8.0124772E+00 
               
               
                 A8 = 
                 −2.5098725E+00 
                 2.3245878E+00 
                 −2.8166086E−01 
                 −8.2762339E+00 
                 −4.0681814E+01 
               
               
                 A10 = 
                 1.0172328E+01 
                 −9.9221035E+00 
                 7.7961971E−01 
                 2.7383357E+01 
                 1.1236402E+02 
               
               
                 A12 = 
                 −2.4300754E+01 
                 2.5014096E+01 
                 −1.0582072E+00 
                 −4.6486398E+01 
                 −1.8351957E+02 
               
               
                 A14 = 
                 3.4001643E+01 
                 −3.5447038E+01 
                 7.7265051E−01 
                 4.5906820E+01 
                 1.8364619E+02 
               
               
                 A16 = 
                 −2.5547691E+01 
                 2.6327975E+01 
                 −2.8660688E−01 
                 −2.6757820E+01 
                 −1.1118585E+02 
               
               
                 A18 = 
                 7.9582545E+00 
                 −7.6774605E+00 
                 3.6384434E−02 
                 8.5763935E+00 
                 3.7558648E+01 
               
               
                 A20 = 
                   
                   
                   
                 −1.1694326E+00 
                 −5.4515225E+00 
               
               
                   
               
               
                 Surface# 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 −8.9997100E+01 
                 −1.6193100E+01 
                 −5.0975400E+00 
                 −4.2539400E+00 
                 −4.9181300E+00 
               
               
                 A4 = 
                 −5.1211879E−01 
                 1.3991426E+00 
                 8.0873437E−01 
                 1.3406284E+00 
                 3.2477064E−01 
               
               
                 A6 = 
                 4.4257838E+00 
                 −1.4814984E+01 
                 −1.2171549E+01 
                 −1.3130249E+01 
                 −1.2043302E+00 
               
               
                 A8 = 
                 −1.7294396E+01 
                 7.6262832E+01 
                 6.0764332E+01 
                 6.4027644E+01 
                 −5.1713923E−01 
               
               
                 A10 = 
                 3.5554835E+01 
                 −2.2686375E+02 
                 −1.7170175E+02 
                 −2.2382080E+02 
                 4.4380184E+00 
               
               
                 A12 = 
                 −4.0981656E+01 
                 4.1348833E+02 
                 3.0397380E+02 
                 5.4932704E+02 
                 −6.7660447E+00 
               
               
                 A14 = 
                 2.6537993E+01 
                 −4.6993977E+02 
                 −3.4434719E+02 
                 −9.6031479E+02 
                 5.5643758E+00 
               
               
                 A16 = 
                 −9.0129334E+00 
                 3.2667627E+02 
                 2.4346694E+02 
                 1.2003692E+03 
                 −2.8528206E+00 
               
               
                 A18 = 
                 1.2535027E+00 
                 −1.2776900E+02 
                 −9.7890831E+01 
                 −1.0482408E+03 
                 9.4049785E−01 
               
               
                 A20 = 
                   
                 2.1624084E+01 
                 1.7082055E+01 
                 6.0314771E+02 
                 −1.8713340E−01 
               
               
                 A22 = 
                   
                   
                   
                 −2.0341577E+02 
                 1.7014881E−02 
               
               
                 A24 = 
                   
                   
                   
                 3.0166896E+01 
               
               
                   
               
            
           
         
       
     
     In the 10th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 10th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 10A and Table 10B as the following values and satisfy the following conditions in Table IOC: 
     
       
         
           
               
             
               
                 TABLE 10C 
               
               
                   
               
               
                 10th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 2.19 
               
               
                   
                 Fno 
                 2.32 
               
               
                   
                 HFOV [degrees] 
                 39.2 
               
               
                   
                 ATmax/BL 
                 2.95 
               
               
                   
                 ATmax/Y11 
                 2.71 
               
               
                   
                 ATmax/f 
                 1.03 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 0.98 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.31 
               
               
                   
                 f/f2 
                 0.93 
               
               
                   
                 f/f3 
                 −0.78 
               
               
                   
                 f/f45 
                 0.27 
               
               
                   
                 f/ImgH 
                 1.22 
               
               
                   
                 f/R1 
                 −1.19 
               
               
                   
                 f/R3 
                 0.97 
               
               
                   
                 f/R4 
                 −0.87 
               
               
                   
                 f123/f234 
                 −0.22 
               
               
                   
                 f34/f45 
                 −0.17 
               
               
                   
                 (N3 + N5)/2 
                 1.621 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 0.09 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 −0.05 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 0.73 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 −0.53 
               
               
                   
                 SL/TL 
                 0.81 
               
               
                   
                 T12/f 
                 1.03 
               
               
                   
                 T12/ImgH 
                 1.25 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.18 
               
               
                   
                 T45/f 
                 0.04 
               
               
                   
                 TL/f 
                 2.84 
               
               
                   
                 (TL − SL)/f 
                 0.53 
               
               
                   
                 V1/N1 
                 25.72 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 8.53 
               
               
                   
                 V4/N4 
                 17.83 
               
               
                   
                 V5/N5 
                 36.60 
               
               
                   
                 Y11/ImgH 
                 0.46 
               
               
                   
                 Y52/Y11 
                 1.57 
               
               
                   
                 FOV [degrees] 
                 78.4 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  19 B , which is a schematic view of the imaging apparatus  10  with another reflective element E 7  according to the 10th embodiment of the present disclosure. The difference between the  FIG.  19 B  and  FIG.  19 A  is that the reflective element E 7  of  FIG.  19 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     11th Embodiment 
       FIG.  21 A  is a schematic view of an imaging apparatus  11  according to the 11th embodiment of the present disclosure.  FIG.  22    shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging apparatus  11  according to the 11th embodiment. In  FIG.  21 A , the imaging apparatus  11  includes an image capturing system lens assembly (its reference numeral is omitted) and an image sensor IS. The image capturing system lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E 1 , an aperture stop ST, a reflective element E 7 , a stop S 1 , a second lens element E 2 , a stop S 2 , a third lens element E 3 , a fourth lens element E 4 , a fifth lens element E 5 , a filter E 6  and an image surface IMG, wherein the image sensor IS is disposed on the image surface IMG of the image capturing system lens assembly. The image capturing system lens assembly includes five lens elements (E 1 , E 2 , E 3 , E 4 , E 5 ) without additional one or more lens elements inserted between the first lens element E 1  and the fifth lens element E 5 . 
     The first lens element E 1  with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The first lens element E 1  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the first lens element E 1  includes one inflection point. 
     The second lens element E 2  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The second lens element E 2  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the second lens element E 2  includes one inflection point. 
     The third lens element E 3  with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The third lens element E 3  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the third lens element E 3  includes two inflection points, and the image-side surface of the third lens element E 3  includes two inflection points. 
     The fourth lens element E 4  with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element E 4  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fourth lens element E 4  includes one inflection point, and the image-side surface of the fourth lens element E 4  includes one inflection point. 
     The fifth lens element E 5  with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fifth lens element E 5  is made of a plastic material, and has the object-side surface and the image-side surface being both aspheric. Furthermore, the object-side surface of the fifth lens element E 5  includes one inflection point, and the image-side surface of the fifth lens element E 5  includes one inflection point and one critical point. 
     According to the 11th embodiment, the reflective element E 7  is a prism, which is made of glass material and disposed between the first lens element E 1  and the second lens element E 2 . 
     The filter E 6  is made of a glass material, which is located between the fifth lens element E 5  and the image surface IMG in order, and will not affect the focal length of the image capturing system lens assembly. 
     The detailed optical data of the 11th embodiment are shown in Table 11A and the aspheric surface data are shown in Table 11B below. 
     
       
         
           
               
             
               
                 TABLE 11A 
               
             
            
               
                   
               
               
                 11th Embodiment 
               
               
                 f = 2.25 mm, Fno = 2.37, HFOV = 38.6 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 −1.6629 
                 ASP 
                 1.050 
                 Plastic 
                 1.544 
                 55.8 
                 8.56 
               
               
                 2 
                   
                 −1.4980 
                 ASP 
                 0.090 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0,010 
                   
                   
                   
                   
               
               
                 4 
                 Prism 
                 Plano 
                 2.000 
                 Glass 
                 1.945 
                 17.9 
                 — 
               
               
                 5 
                   
                 Plano 
                 0.010 
               
               
                 6 
                 Stop 
                 Plano 
                 0.120 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 2 
                 2.5252 
                 ASP 
                 0.847 
                 Plastic 
                 1.544 
                 56.0 
                 2.20 
               
               
                 8 
                   
                 −2.0090 
                 ASP 
                 −0.340  
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 9 
                 Stop 
                 Plano 
                 0.430 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 10 
                 Lens 3 
                 12.7339 
                 ASP 
                 0.230 
                 Plastic 
                 1.698 
                 14.5 
                 −7.19 
               
               
                 11 
                   
                 3.5741 
                 ASP 
                 0.350 
               
               
                 12 
                 Lens 4 
                 −0.8681 
                 ASP 
                 0.285 
                 Plastic 
                 1.587 
                 28.3 
                 −1.83 
               
               
                 13 
                   
                 −5.0697 
                 ASP 
                 0.090 
               
               
                 14 
                 Lens 5 
                 0.5270 
                 ASP 
                 0.320 
                 Plastic 
                 1.543 
                 56.5 
                 2.11 
               
               
                 15 
                   
                 0.7663 
                 ASP 
                 0.340 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 16 
                 Filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 17 
                   
                 Plano 
                 0.414 
               
               
                 18 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 (stop S1) is 0.883 mm. 
               
               
                 Effective radius of Surface 9 (stop S2) is 1.150 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 11B 
               
               
                   
               
             
            
               
                 Aspheric Coefficients 
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 7 
                 8 
                 10 
               
               
                   
               
               
                 k = 
                 3.4227900E−01 
                 6.1765500E−01 
                 4.2985800E−02 
                 2.9821700E−01 
                 2.6209200E+01 
               
               
                 A4 = 
                 1.7297472E−02 
                 1.1749990E−01 
                 6.1965424E−02 
                 −5.4657589E−02 
                 −3.9446710E−01 
               
               
                 A6 = 
                 2.0650727E−01 
                 −3.2350931E−01 
                 2.9589984E−02 
                 1.0666176E+00 
                 2.3366152E+00 
               
               
                 A8 = 
                 −1.1706802E+00 
                 2.9249697E+00 
                 −3.0026074E−01 
                 −4.1838311E+00 
                 −8.5821770E+00 
               
               
                 A10 = 
                 4.2821850E+00 
                 −1.3915282E+01 
                 7.3689901E−01 
                 8.8860186E+00 
                 1.7291638E+01 
               
               
                 A12 = 
                 −9.4184790E+00 
                 3.8091191E+01 
                 −1.0650380E+00 
                 −1.1440285E+01 
                 −2.0807923E+01 
               
               
                 A14 = 
                 1.2236508E+01 
                 −5.8579941E+01 
                 8.9871701E−01 
                 9.2211652E+00 
                 1.5753992E+01 
               
               
                 A16 = 
                 −8.6343334E+00 
                 4.6001451E+01 
                 −4.1555266E−01 
                 −4.5999992E+00 
                 −7.5684486E+00 
               
               
                 A18 = 
                 2.5489058E+00 
                 −1.3710412E+01 
                 7.6917042E−02 
                 1.3065412E+00 
                 2.1771381E+00 
               
               
                 A20 = 
                   
                   
                   
                 −1.6238478E−01 
                 −2.9158949E−01 
               
               
                   
               
               
                 Surface # 
                 11 
                 12 
                 13 
                 14 
                 15 
               
               
                   
               
               
                 k = 
                 −2.8319600E+01 
                 −1.2167900E+01 
                 −6.2051100E+00 
                 −3.4496300E+00 
                 −2.9489500E+00 
               
               
                 A4 = 
                 −1.3140561E−01 
                 6.9172504E−02 
                 −4.8531808E−01 
                 2.6457616E−01 
                 6.6467700E−01 
               
               
                 A6 = 
                 1.6759481E+00 
                 4.9931377E−01 
                 6.9613821E−01 
                 −2.6758220E+00 
                 −4.6126161E+00 
               
               
                 A8 = 
                 −6.2406409E+00 
                 −1.8385584E+00 
                 2.8702021E+00 
                 4.9255289E+00 
                 1.1626586E+01 
               
               
                 A10 = 
                 1.2158470E+01 
                 4.6504717E+00 
                 −1.8903134E+01 
                 −7.5286853E+00 
                 −1.8158477E+01 
               
               
                 A12 = 
                 −1.4368640E+01 
                 −8.8407418E+00 
                 5.4772563E+01 
                 1.5501029E+01 
                 1.9131953E+01 
               
               
                 A14 = 
                 1.0552089E+01 
                 1.0915544E+01 
                 −9.6538181E+01 
                 −3.0152518E+01 
                 −1.3867842E+01 
               
               
                 A16 = 
                 −4.4136290E+00 
                 −7.8867638E+00 
                 1.0827417E+02 
                 3.8537761E+01 
                 6.8459694E+00 
               
               
                 A18 = 
                 7.9443042E−01 
                 3.0587296E+00 
                 −7.5266991E+01 
                 −2.9615191E+01 
                 −2.2039338E+00 
               
               
                 A20 = 
                   
                 −5.0076257E−01 
                 2.9537756E+01 
                 1.2673782E+01 
                 4.1730690E−01 
               
               
                 A22 = 
                   
                   
                 −4.9898879E+00 
                 −2.3670668E+00 
                 −3.5209197E−02 
               
               
                   
               
            
           
         
       
     
     In the 11th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 11th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 11A and Table 11B as the following values and satisfy the following conditions in Table 11C: 
     
       
         
           
               
             
               
                 TABLE 11C 
               
               
                   
               
               
                 11th Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 f [mm] 
                 2.25 
               
               
                   
                 Fno 
                 2.37 
               
               
                   
                 HFOV [degrees] 
                 38.6 
               
               
                   
                 ATmax/BL 
                 2.31 
               
               
                   
                 ATmax/Y11 
                 2.45 
               
               
                   
                 ATmax/f 
                 0.99 
               
               
                   
                 CT/CTmax 
                 1.00 
               
               
                   
                 (CT2 + T23 + CT3 + T34 +  
                 0.98 
               
               
                   
                 CT4 + T45 + CT5)/f 
                   
               
               
                   
                 f/f12 
                 1.32 
               
               
                   
                 f/f2 
                 1.02 
               
               
                   
                 f/f3 
                 −0.31 
               
               
                   
                 f/f45 
                 −0.16 
               
               
                   
                 f/ImgH 
                 1.25 
               
               
                   
                 f/R1 
                 −1.35 
               
               
                   
                 f/R3 
                 0.89 
               
               
                   
                 f/R4 
                 −1.12 
               
               
                   
                 f123/f234 
                 −0.03 
               
               
                   
                 f34/f45 
                 0.10 
               
               
                   
                 (N3 + N5)/2 
                 1.621 
               
               
                   
                 (R1 − R2)/(R1 + R2) 
                 0.05 
               
               
                   
                 (R3 + R4)/(R3 − R4) 
                 0.11 
               
               
                   
                 (R5 + R6)/(R5 − R6) 
                 1.78 
               
               
                   
                 (R7 − R8)/(R7 + R8) 
                 −0.71 
               
               
                   
                 SL/TL 
                 0.82 
               
               
                   
                 T12/f 
                 0.99 
               
               
                   
                 T12/ImgH 
                 1.24 
               
               
                   
                 (T23 + T34 + T45)/ΣAT 
                 0.19 
               
               
                   
                 T45/f 
                 0.04 
               
               
                   
                 TL/f 
                 2.87 
               
               
                   
                 (TL − SL)/f 
                 0.51 
               
               
                   
                 V1/N1 
                 36.15 
               
               
                   
                 V2/N2 
                 36.26 
               
               
                   
                 V3/N3 
                 8.53 
               
               
                   
                 V4/N4 
                 17.83 
               
               
                   
                 V5/N5 
                 36.60 
               
               
                   
                 Y11/ImgH 
                 0.50 
               
               
                   
                 Y52/Y11 
                 1.42 
               
               
                   
                 FOV [degrees] 
                 77.2 
               
               
                   
                   
               
            
           
         
       
     
     Please refer to  FIG.  21 B , which is a schematic view of the imaging apparatus  11  with another reflective element E 7  according to the 11th embodiment of the present disclosure. The difference between the  FIG.  21 B  and  FIG.  21 A  is that the reflective element E 7  of  FIG.  21 B  can fold the direction of the optical axis, so that the arrangement is favorable for adapting the electronic device with different requirements. 
     12th Embodiment 
       FIG.  26    is a schematic view of an imaging apparatus  100  according to the 12th embodiment of the present disclosure. In  FIG.  26   , the imaging apparatus  100  of the 12th embodiment is a camera module, the imaging apparatus  100  includes an imaging lens assembly  101 , a driving apparatus  102  and an image sensor  103 , wherein the imaging lens assembly  101  includes the image capturing system lens assembly of the present disclosure and a lens barrel (not shown in drawings) for carrying the image capturing system lens assembly. The imaging apparatus  100  can focus light from an imaged object via the imaging lens assembly  101 , perform image focusing by the driving apparatus  102 , and generate an image on the image sensor  103 , and the imaging information can be transmitted. 
     The driving apparatus  102  can be an auto-focus module, which can be driven by driving systems, such as voice coil motors (VCM), micro electro-mechanical systems (MEMS), piezoelectric systems, and shape memory alloys etc. The image capturing system lens assembly can obtain a favorable imaging position by the driving apparatus  102  so as to capture clear images when the imaged object is disposed at different object distances. 
     The imaging apparatus  100  can include the image sensor  103  located on the image surface of the image capturing system lens assembly, such as CMOS and CCD, with superior photosensitivity and low noise. Thus, it is favorable for providing realistic images with high definition image quality thereof. Moreover, the imaging apparatus  100  can further include an image stabilization module  104 , which can be a kinetic energy sensor, such as an accelerometer, a gyro sensor, and a Hall Effect sensor. In the 12th embodiment, the image stabilization module  104  is a gyro sensor, but is not limited thereto. Therefore, the variation of different axial directions of the image capturing system lens assembly can adjusted so as to compensate the image blur generated by motion at the moment of exposure, and it is further favorable for enhancing the image quality while photographing in motion and low light situation. Furthermore, advanced image compensation functions, such as optical image stabilizations (OIS) and electronic image stabilizations (EIS) etc., can be provided. 
     13th Embodiment 
       FIG.  27 A  is a schematic view of one side of an electronic device  200  according to the 13th embodiment of the present disclosure.  FIG.  27 B  is a schematic view of another side of the electronic device  200  of  FIG.  27 A .  FIG.  27 C  is a system schematic view of the electronic device  200  of  FIG.  27 A . In  FIGS.  27 A,  27 B and  27 C , the electronic device  200  according to the 13th embodiment is a smartphone, which include imaging apparatuses  100 ,  110 ,  120 ,  130 ,  140 , a flash module  201 , a focusing assisting module  202 , an image signal processor (ISP)  203 , a user interface  204  and an image software processor  205 , wherein each of the imaging apparatuses  120 ,  130 ,  140  is a front camera. When the user captures images of an imaged object  206  via the user interface  204 , the electronic device  200  focuses and generates an image via at least one of the imaging apparatuses  100 ,  110 ,  120 ,  130 ,  140 , while compensating for low illumination via the flash module  201  when necessary. Then, the electronic device  200  quickly focuses on the imaged object  206  according to its object distance information provided by the focusing assisting module  202 , and optimizes the image via the image signal processor  203  and the image software processor  205 . Thus, the image quality can be further enhanced. The focusing assisting module  202  can adopt conventional infrared or laser for obtaining quick focusing, and the user interface  204  can utilize a touch screen or a physical button for capturing and processing the image with various functions of the image processing software. 
     Each of the imaging apparatuses  100 ,  110 ,  120 ,  130 ,  140  according to the 13th embodiment can include the image capturing system lens assembly of the present disclosure, and can be the same or similar to the imaging apparatus  100  according to the aforementioned 12th embodiment, and will not describe again herein. In detail, according to the 13th embodiment, the imaging apparatuses  100 ,  110  can be wide angle imaging apparatus and ultra-wide angle imaging apparatus, respectively. The imaging apparatuses  120 ,  130 ,  140  can be wide angle imaging apparatus, ultra-wide angle imaging apparatus and TOF (Time-Of-Flight) module, respectively, or can be others imaging apparatuses, which will not be limited thereto. Further, the connecting relationships between each of the imaging apparatuses  110 ,  120 ,  130 ,  140  and other elements can be the same as the imaging apparatus  100  in  FIG.  27 C , or can be adaptively adjusted according to the type of the imaging apparatuses, which will not be shown and detailed descripted again. 
     14th Embodiment 
       FIG.  28    is a schematic view of one side of an electronic device  300  according to the 14th embodiment of the present disclosure. According to the 14th embodiment, the electronic device  300  is a smartphone, which include imaging apparatuses  310 ,  320 ,  330  and a flash module  301 . 
     The electronic device  300  according to the 14th embodiment can include the same or similar elements to that according to the 13th embodiment, and each of the imaging apparatuses  310 ,  320 ,  330  according to the 14th embodiment can have a configuration which is the same or similar to that according to the 13th embodiment, and will not describe again herein. In detail, according to the 14th embodiment, each of the imaging apparatuses  310 ,  320 ,  330  can include the image capturing system lens assembly of the present disclosure, and can be the same or similar to the imaging apparatus  100  according to the aforementioned 12th embodiment, and will not describe again herein. In detail, the imaging apparatus  310  can be ultra-wide angle imaging apparatus, the imaging apparatus  320  can be wide angle imaging apparatus, the imaging apparatus  330  can be telephoto imaging apparatus (which can include light path folding element), or can be adaptively adjusted according to the type of the imaging apparatuses, which will not be limited to the arrangement. 
     15th Embodiment 
       FIG.  29    is a schematic view of one side of an electronic device  400  according to the 15th embodiment of the present disclosure. According to the 15th embodiment, the electronic device  400  is a smartphone, which include imaging apparatuses  410 ,  420 ,  430 ,  440 ,  450 ,  460 ,  470 ,  480 ,  490  and a flash module  401 . 
     The electronic device  400  according to the 15th embodiment can include the same or similar elements to that according to the 13th embodiment, and each of the imaging apparatuses  410 ,  420 ,  430 ,  440 ,  450 ,  460 ,  470 ,  480 ,  490  and the flash module  401  can have a configuration which is the same or similar to that according to the 13th embodiment, and will not describe again herein. In detail, according to the 15th embodiment, each of the imaging apparatuses  410 ,  420 ,  430 ,  440 ,  450 ,  460 ,  470 ,  480 ,  490  can include the image capturing system lens assembly of the present disclosure, and can be the same or similar to the imaging apparatus  100  according to the aforementioned 12th embodiment, and will not describe again herein. 
     In detail, each of the imaging apparatuses  410 ,  420  can be ultra-wide angle imaging apparatus, each of the imaging apparatuses  430 ,  440  can be wide angle imaging apparatus, each of the imaging apparatuses  450 ,  460  can be telephoto imaging apparatus, each of the imaging apparatuses  470 ,  480  can be telephoto imaging apparatus (which can include light path folding element), the imaging apparatus  490  can be TOF module, or can be adaptively adjusted according to the type of the imaging apparatuses, which will not be limited to the arrangement. 
     16th Embodiment 
       FIG.  30 A  is a schematic view of one side of an electronic device  500  according to the 16th embodiment of the present disclosure.  FIG.  30 B  is a schematic view of another side of the electronic device  500  according to the 16th embodiment of  FIG.  30 A . In  FIG.  30 A  and  FIG.  30 B , according to the 16th embodiment, the electronic device  500  is a smartphone, which include imaging apparatuses  510 ,  520 ,  530 ,  540  and a user interface  504 . 
     The electronic device  500  according to the 16th embodiment can include the same or similar elements to that according to the 13th embodiment, and each of the imaging apparatuses  510 ,  520 ,  530 ,  540  and the user interface  504  can have a configuration which is the same or similar to that according to the 13th embodiment, and will not describe again herein. In detail, according to the 16th embodiment, the imaging apparatus  510  corresponds to a non-circular opening located on an outer side of the electronic device  500  for capturing the image, and the imaging apparatuses  520 ,  530 ,  540  can be telephoto imaging apparatus, wide angle imaging apparatus and ultra-wide angle imaging apparatus, respectively, or can be adaptively adjusted according to the type of the imaging apparatuses, which will not be limited to the arrangement. 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. It is to be noted that Tables show different data of the different embodiments; however, the data of the different embodiments are obtained from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and its practical applications, to thereby enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated. The embodiments depicted above and the appended drawings are exemplary and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.