Patent Publication Number: US-2023137616-A1

Title: Image capturing optical system, image capturing device and electronic device

Description:
RELATED APPLICATIONS 
     This application is a continuation application of U.S. application Ser. No. 17/143,425 filed on Jan. 7, 2021, now approved and which is a continuation application of U.S. application Ser. No. 16/528,856 filed on Aug. 1, 2019, now issued to U.S. Pat. No. 10,921,564B2 and which is a continuation application of U.S. application Ser. No. 16/053,949 filed on Aug. 3, 2018, now issued to U.S. Pat. No. 10,416,418 and which is a continuation application of U.S. application Ser. No. 15/475,363 filed on Mar. 31, 2017, now issued to U.S. Pat. No. 10,082,645 and which is a continuation application of U.S. application Ser. No. 15/092,240 filed on Apr. 6, 2016, now issued to U.S. Pat. No. 9,645,363 and which is a divisional application of U.S. application Ser. No. 14/534,986 filed on Nov. 6, 2014, now issued to U.S. Pat. No. 9,341,820 and claims priority under 35 U.S.C. 119(e) to Taiwan Application Serial No. 103129318 filed on Aug. 26, 2014, the entire contents of which are incorporated by reference herein. 
    
    
     BACKGROUND 
     Technical Field 
     The present disclosure relates to an image capturing optical system and an image capturing device, and more particularly, to an image capturing optical system and an image capturing device applicable to electronic devices. 
     Description of Related Art 
     As personal electronic products nowadays has been becoming more and more compact, the internal components of the electronic products are also required to be smaller in size than before. Except for the demand of miniaturization, the advanced semiconductor manufacturing technologies reducing the pixel size of sensors have also pushed compact optical systems to evolve toward the field of higher megapixels. In addition, the popularity of smart phones and tablet personal computers also significantly increases the requirements for high resolution and image quality of present compact optical systems. Therefore, there is also an increasing demand for compact optical systems featuring better image quality. 
     In a conventional five-element optical system, the fourth lens element generally has a convex image-side surface. However, under this configuration, the convex image-side surface of the fourth lens element has a larger curvature and the variation of the thickness of the lens is more pronounced, thus shortcomings, such as formation difficulties of lenses and excessive optical sensitivity may occur easily. Moreover, the refractive power of the second lens element in the conventional five-element optical system is usually poorly distributed and unable to effectively balance the positive refractive power of the first lens element, thus the light will bend drastically and the aberration cannot be eliminated easily. 
     Therefore, a need exists in the art for an optical system that features compact size, better image quality, and an appropriate sensitivity of the system. 
     SUMMARY 
     According to one aspect of the present disclosure, an image capturing optical system, comprising, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof; a third lens element with refractive power; a fourth lens element with refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in the paraxial region thereof, the object-side surface and the image-side surface thereof being aspheric; and a fifth lens element with refractive power having an image-side surface being concave in a paraxial region thereof, an object-side surface and the image-side surface thereof being aspheric, at least one of the object-side surface and the image-side surface having at least one convex shape in an off-axis region thereof; wherein the image capturing optical system has a total of five lens elements with refractive power and an air gap is arranged between any two adjacent lenses with refractive power; wherein a focal length of the second lens element is f2, a focal length of the first lens element is f1, a curvature radius of the object-side surface of the second lens element is R3, 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, and the following conditions are satisfied: 
       −0.88&lt; f 2/ f 1&lt;0;
 
       0&lt; R 3/ f 2; and 
       0.25&lt; T 12/( T 23+ T 34+ T 45). 
     According to another aspect of the present disclosure, an image capturing optical system comprising, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof; a third lens element with refractive power; a fourth lens element with refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the object-side surface and the image-side surface thereof being aspheric; and a fifth lens element with refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the object-side surface and the image-side surface thereof being aspheric, the image-side surface having at least one convex shape in an off-axis region thereof; wherein the image capturing optical system has a total of five lens elements with refractive power and an air gap is arranged between any two adjacent lens elements with refractive power; wherein a focal length of the second lens element is f2, a focal length of the first lens element is f1, a curvature radius of the object-side surface of the second lens element is R3, and the following conditions are satisfied: 
       −1.0&lt; f 2/ f 1&lt;0; and
 
       0&lt; R 3/ f 2. 
     According to yet another aspect of the present disclosure, an image capturing device comprises the aforementioned image capturing optical system and an image sensor. 
     According to yet another aspect of the present disclosure, an electronic device comprises the aforementioned image capturing device. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure can be more fully understood by reading the following detailed description of the embodiments, with reference made to the accompanying drawings as follows: 
         FIG.  1 A  is a schematic view of an image capturing device according to the 1st embodiment of the present disclosure; 
         FIG.  1 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 1st embodiment; 
         FIG.  2 A  is a schematic view of an image capturing device according to the 2nd embodiment of the present disclosure; 
         FIG.  2 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 2nd embodiment; 
         FIG.  3 A  is a schematic view of an image capturing device according to the 3rd embodiment of the present disclosure; 
         FIG.  3 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 3rd embodiment; 
         FIG.  4 A  is a schematic view of an image capturing device according to the 4th embodiment of the present disclosure; 
         FIG.  4 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 4th embodiment; 
         FIG.  5 A  is a schematic view of an image capturing device according to the 5th embodiment of the present disclosure; 
         FIG.  5 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 5th embodiment; 
         FIG.  6 A  is a schematic view of an image capturing device according to the 6th embodiment of the present disclosure; 
         FIG.  6 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 6th embodiment; 
         FIG.  7 A  is a schematic view of an image capturing device according to the 7th embodiment of the present disclosure; 
         FIG.  7 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 7th embodiment; 
         FIG.  8 A  is a schematic view of an image capturing device according to the 8th embodiment of the present disclosure; 
         FIG.  8 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 8th embodiment; 
         FIG.  9 A  is a schematic view of an image capturing device according to the 9th embodiment of the present disclosure; 
         FIG.  9 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 9th embodiment; 
         FIG.  10 A  is a schematic view of an image capturing device according to the 10th embodiment of the present disclosure; 
         FIG.  10 B  shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 10th embodiment; 
         FIG.  11 A  shows a smart phone with an image capturing device of the present disclosure installed therein; 
         FIG.  11 B  shows a tablet personal computer with an image capturing device of the present disclosure installed therein; and 
         FIG.  11 C  shows a wearable device with an image capturing device of the present disclosure installed therein. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure provides an image capturing optical system comprising, in order from an object side to an image side: a first lens element with refractive power; a second lens element with refractive power; a third lens element with refractive power; a fourth lens element with refractive power; and a fifth lens element with refractive power; wherein the image capturing optical system has a total of five lens elements with refractive power. 
     In the aforementioned image capturing optical system, every two lens elements of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element have at least one air gap in between. Each of the first through fifth lens elements is a single and non-cemented lens element. That is, any two lens elements adjacent to each other are not cemented, and there is a space between the two lens elements. Moreover, the manufacturing process of the cemented lenses is more complex than the non-cemented lenses. In particular, a second surface of one lens element and a first surface of the following lens element need to have accurate curvature to ensure these two lens elements will be highly cemented. However, during the cementing process, those two lens elements might not be highly cemented due to misalignment issues and it is thereby not favorable for the image quality of the image capturing optical system. Therefore, the image capturing optical system of the present disclosure provides five non-cemented lens elements for improving the problem generated by the cemented lens elements. 
     The first lens element has positive refractive power, so that it provides the optical system with the positive refractive power as it needs to be so as to reduce the total track length of the image capturing optical system. The first lens element has an object-side surface being convex in a paraxial region thereof so that it is favorable for adjusting the distribution of the positive refractive power and thereby reducing the total track length. 
     The second lens element has negative refractive power, so that it is favorable for correcting the aberration created by the first lens element. The second lens element has an object-side surface being concave in a paraxial region thereof so as to improve the aberration correction ability, and the image-side surface of the second lens element may have at least one convex shape in an off-axis region thereof to facilitate the correction of off-axis aberration. 
     The third lens element may have positive refractive power, which is favorable for reducing the spherical aberration so as to improve the image quality. 
     The fourth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof so that the astigmatism can be favorably corrected to improve the image quality. 
     The fifth lens element may have negative refractive power so that the back focal length of the image capturing optical system can be favorably shortened and thereby to keep the image capturing optical system compact. The fifth lens element may have positive refractive power so that the sensitivity of the system can be favorably reduced. The fifth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof so as to facilitate enhancing the correction of the astigmatism of the system. When at least one of the object-side surface and the image-side surface of the fifth lens element has at least one convex shape in an off-axis region thereof, the incident angle of the light projecting onto an image sensor from the off-axis field can be effectively suppressed to increase the receiving efficiency of the image sensor and thereby to further correct the aberration of the off-axis field. 
     When a focal length of the second lens element is f2, a focal length of the first lens element is f1 and the following condition is satisfied: −1.0&lt;f2/f1&lt;0, the second lens element has stronger negative refractive power so that the convergence of light effected by the positive refractive power of the first lens element can be balanced more effectively, thereby preventing drastic deviation of light and aberration. Preferably, the following condition is satisfied: of −0.88&lt;f2/f1&lt;0; more preferably, the following condition is satisfied: −0.75&lt;f2/f1&lt;0. 
     When a curvature radius of the object-side surface of the second lens element is R3, the focal length of the second lens element is f2, and the following condition is satisfied: 0&lt;R3/f2, the aberration can be favorably corrected. 
     When 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, and the following condition is satisfied: 0.25&lt;T12/(T23+T34+T45), the distance between any two lens elements will be more appropriate, and this is favorable for assembling the system and keeping the system compact. Preferably, the condition of 0.60&lt;T12/(T23+T34+T45)&lt;4.0 is satisfied. 
     When an f-number of the image capturing optical system is Fno, and the following condition is satisfied: Fno&lt;1.85, it is favorable for obtaining the advantages of large aperture and improving the peripheral illumination of the optical system. 
     When half of the maximal field of view of the image capturing optical system is HFOV, and the following condition is satisfied: 0&lt;tan(HFOV)&lt;0.45, it is favorable for the image capturing optical system to obtain a desirable field of view. 
     When a focal length of the image capturing optical system is f, a focal length of any one of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element is fx (that is, x is 1, 2, 3, 4 or 5), and the following condition is satisfied: 6.0&lt;Σ|f/fx|, the distribution of the refractive power of the image capturing optical system is more balanced and thereby to facilitate reducing the sensitivity of the system. 
     When a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, and the following condition is satisfied: 1.0&lt;CT1/(CT2+CT3), the manufacturing yield rate can be favorably increased. 
     When the maximum index among the indexes of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element is Nmax, and the following condition is satisfied: 1.50&lt;Nmax&lt;1.75, it is favorable for properly selecting the materials for the lens elements so that the design of the system can be more flexible. 
     When an effective radius of the object-side surface of the first lens element is SD11, an effective radius of the image-side surface of the fifth lens element is SD52, and the following condition is satisfied: 1.0&lt;SD11/SD52&lt;1.6, the off-axis field aberration correction can be favorably enhanced. 
     When the image capturing optical system can further comprise a prism disposed between the image-side surface of the fifth lens element and an image surface, the prism can be used to change the optical path and thereby to meet the design requirements for compact electronic devices. 
     When the focal length of the second lens element is f2, the focal length of any one of the first lens element, the third lens element, the fourth lens element and the fifth lens element is fy, that is, y is 1, 3, 4 or 5, and the following condition is satisfied: |f2|&lt;|fy|, the refractive power of the second lens element is more appropriate so as to balance the distribution of the refractive power of the system and to provide greater aberration corrections. 
     When the image capturing optical system can further comprise an image surface, a curvature radius of the image surface is Rimg, and the following condition is satisfied: ″500 [mm]&lt;Rimg&lt;−20 [mm], the field of curvature can be effectively corrected to significantly increase the accuracy of focusing. 
     When a focal length of the fourth lens element is f4, a curvature radius of the image-side surface of the third lens element is R6 and the following condition is satisfied: −0.5&lt;f4/R6 &lt;2.0, the astigmatism and spherical aberrations can be reduced. 
     According to the image capturing optical system of the present disclosure, the lens elements thereof can be made of glass or plastic material. When the lens elements are made of glass material, the distribution of the refractive power of the image capturing optical system may be more flexible to design. When the lens elements are made of plastic material, the manufacturing cost 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 spherical surfaces so as to have more controllable variables for eliminating the aberration thereof, and to further decrease the required number of the lens elements. Therefore, the total track length of the image capturing optical system can be reduced. 
     According to the image capturing optical system of the present disclosure, each of an object-side surface and an image-side surface has a paraxial region and an off-axis region. The paraxial region refers to the region of the surface where light rays travel close to the optical axis, and the off-axis region refers to the region of the surface away from the paraxial region. Particularly, when the lens element has a convex surface, it indicates that the surface is convex in the paraxial region thereof; when the lens element has a concave surface, it indicates that the surface is concave in the paraxial region thereof. Likewise, when the region of refractive power or focus of a lens element is not defined, it indicates that the region of refractive power or focus of the lens element is in the paraxial region thereof. 
     According to the image capturing optical system of the present disclosure, an image surface of the image capturing optical system, based on the corresponding image sensor, can be flat or curved, especially a curved surface being concave facing towards the object side of the optical imaging system. 
     According to the image capturing optical system of the present disclosure, the image capturing optical system can include at least one stop, such as an aperture stop, a glare stop or a field stop. Said glare stop or said field stop is for eliminating the stray light and thereby improving the image resolution thereof. 
     According to the image capturing optical system of the present disclosure, an aperture stop can be configured as a front stop or a middle stop. A front stop disposed between an imaged object and the first lens element can provide a longer distance between an exit pupil of the image capturing optical system and the image surface and thereby improves the image-sensing efficiency of an image sensor. A middle stop disposed between the first lens element and the image surface is favorable for enlarging the field of view of the image capturing optical system and thereby provides a wider field of view for the same. 
     The present image capturing optical system can be optionally applied to moving focus optical systems. According to the image capturing optical system of the present disclosure, the image capturing optical system is featured with good correction ability and high image quality, and can be applied to 3D (three-dimensional) image capturing applications, in products such as digital cameras, mobile devices, digital tablets, smart TV, wireless monitoring device, motion sensing input device, driving recording system, rear view camera system, wearable devices and other electronic devices. 
     According to the present disclosure, an image capturing device is provided. The image capturing device includes the image capturing optical system according to the aforementioned image capturing optical system of the present disclosure, and an image sensor, wherein the image sensor is disposed on an image surface of the aforementioned image capturing optical system. As a result, it is favorable for improving the resolving power and illumination so as to achieve the best image quality. Preferably, the image capturing device can further include a barrel member, a holding member or a combination thereof. 
     In  FIG.  11 A ,  FIG.  11 B  and  FIG.  11 C , an image capturing device  1101  may be installed in but not limited to an electronic device, including a smart phone  1110 , a tablet personal computer  1120  or a wearable device  1130 . The three exemplary figures of different kinds of electronic device are only exemplary for showing the image capturing device of present disclosure installing in an electronic device and is not limited thereto. Preferably, the electronic device can further include but not limited to display, control unit, random access memory unit (RAM) a read only memory unit (ROM) or a combination thereof. 
     According to the above description of the present disclosure, the following 1st-10th specific embodiments are provided for further explanation. 
     1st Embodiment 
       FIG.  1 A  is a schematic view of an image capturing device according to the 1st embodiment of the present disclosure.  FIG.  1 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 1st embodiment. 
     In  FIG.  1 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  190 . The image capturing optical system includes, in order from an object side to an image side, a first lens element  110 , an aperture stop  100 , a second lens element  120 , a third lens element  130 , a fourth lens element  140 , a fifth lens element  150 , a prism  160  and an image surface  180 , wherein the image capturing optical system has a total of five lens elements ( 110 - 150 ) with refractive power, which are non-cemented lens element. 
     The first lens element  110  with positive refractive power has an object-side surface  111  being convex in a paraxial region thereof and an image-side surface  112  being concave in a paraxial region thereof, which are both aspheric, the first lens element  110  is made of plastic material. 
     The second lens element  120  with negative refractive power has an object-side surface  121  being concave in a paraxial region thereof and an image-side surface  122  being convex in a paraxial region thereof, which are both aspheric, the second lens element  120  is made of plastic material, and the image-side surface  122  has at least one convex shape in an off-axis region thereof. 
     The third lens element  130  with positive refractive power has an object-side surface  131  being concave in a paraxial region thereof and an image-side surface  132  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  130  is made of plastic material. 
     The fourth lens element  140  with negative refractive power has an object-side surface  141  being convex in a paraxial region thereof and an image-side surface  142  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  140  is made of plastic material. 
     The fifth lens element  150  with positive refractive power has an object-side surface  151  being convex in a paraxial region thereof and an image-side surface  152  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  150  is made of plastic material and the object-side surface  151  having at least one convex shape in an off-axis region thereof. 
     The prism  160  is made of glass and located between the fifth lens element  150  and the image surface  180 , and will not affect the focal length of the image capturing optical system. The image sensor  190  is disposed on or near the image surface  180  of the image capturing optical system. 
     The equation of the aspheric surface profiles is expressed as follows: 
     
       
         
           
             
               
                 X 
                 ⁡ 
                 ( 
                 Y 
                 ) 
               
               = 
               
                 
                   
                     ( 
                     
                       
                         Y 
                         2 
                       
                       / 
                       R 
                     
                     ) 
                   
                   / 
                   
                     ( 
                     
                       1 
                       + 
                       
                         s 
                         ⁢ 
                         q 
                         ⁢ 
                         r 
                         ⁢ 
                         
                           t 
                           ⁡ 
                           ( 
                           
                             1 
                             - 
                             
                               
                                 ( 
                                 
                                   1 
                                   + 
                                   k 
                                 
                                 ) 
                               
                               × 
                               
                                 
                                   ( 
                                   
                                     Y 
                                     / 
                                     R 
                                   
                                   ) 
                                 
                                 2 
                               
                             
                           
                           ) 
                         
                       
                     
                     ) 
                   
                 
                 + 
                 
                   
                     ∑ 
                     i 
                   
                   
                     
                       ( 
                       Ai 
                       ) 
                     
                     × 
                     
                       ( 
                       
                         Y 
                         i 
                       
                       ) 
                     
                   
                 
               
             
             , 
           
         
       
     
     where, 
     X is the relative distance between a point on the aspheric surface spaced at a distance Y from the optical axis and the tangential plane at the aspheric surface vertex on the optical axis; 
     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 first embodiment, a focal length of the image capturing optical system is f, an f-number of the image capturing optical system is Fno, half of a maximal field of view of the image capturing optical system is HFOV, and these parameters have the following values: f=9.65 mm; Fno=1.56; and HFOV=13.2 degrees. 
     In the first embodiment, half of a maximal field of view of the image capturing optical system is HFOV, and it satisfies the condition: tan(HFOV)=0.23. 
     In the first embodiment, the maximum index among the indexes of the first lens element  110 , the second lens element  120 , the third lens element  130 , the fourth lens element  140  and the fifth lens element  150  is Nmax, and it satisfies the condition: Nmax=1.650. 
     In the first embodiment, a central thickness of the first lens element  110  is CT1, a central thickness of the second lens element  120  is CT2, a central thickness of the third lens element  130  is CT3, and they satisfy the condition: CT1/(CT2+CT3)=1.41. 
     In the first embodiment, an axial distance between the first lens element  110  and the second lens element  120  is T12, an axial distance between the second lens element  120  and the third lens element  130  is T23, an axial distance between the third lens element  130  and the fourth lens element  140  is T34, an axial distance between the fourth lens element  140  and the fifth lens element  150  is T45, and they satisfy the condition: T12/(T23+T34+T45)=1.83. 
     In the first embodiment, a curvature radius of the object-side surface  121  of the second lens element  120  is R3, a focal length of the second lens element  120  is f2, and they satisfy the condition: R3/f2=0.30. 
     In the first embodiment, the focal length of the second lens element  120  is f2, a focal length of the first lens element  110  is f1, and they satisfy the condition: f2/f1=− 0 . 85 . 
     In the first embodiment, a focal length of the fourth lens element  140  is f4, a curvature radius of the image-side surface  132  of the third lens element  130  is R6, and they satisfy the condition: f4/R6=1.52. 
     In the first embodiment, the focal length of the image capturing optical system is f, the focal length of any one of the first lens element  110 , the second lens element  120 , the third lens element  130 , the fourth lens element  140  and the fifth lens element  150  is fx, that is, x is 1, 2, 3, 4 or 5, and they satisfy the condition: Σ|f/fx|=8.23. 
     In the first embodiment, a curvature radius of the image surface  180  is Rimg, and it satisfies the condition: Rimg=∞. 
     In the first embodiment, an effective radius of the object-side surface  111  of the first lens element  110  is SD11, an effective radius of the image-side surface  152  of the fifth lens element  150  is SD52, and they satisfy the condition: SD11/SD52=1.30. 
     The detailed optical data of the first embodiment is shown in TABLE 1, and the aspheric surface data is shown in TABLE 2, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 (Embodiment 1) 
               
               
                 f = 9.65 mm, Fno = 1.56, HFOV = 13.2 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe# 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Lens 1 
                 5.467 
                 ASP 
                 1.746 
                 Plastic 
                 1.544 
                 55.9 
                 14.21 
               
               
                 2 
                   
                 16.567 
                 ASP 
                 0.051 
                   
                   
                   
                   
               
               
                 3 
                 Stop 
                 Plano 
                   
                 1.279 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −3.648 
                 ASP 
                 0.500 
                 Plastic 
                 1.650 
                 21.5 
                 −12.02 
               
               
                 5 
                   
                 −7.210 
                 ASP 
                 0.456 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 −4.956 
                 ASP 
                 0.737 
                 Plastic 
                 1.650 
                 21.5 
                 5.92 
               
               
                 7 
                   
                 −2.294 
                 ASP 
                 0.125 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 4.820 
                 ASP 
                 1.201 
                 Plastic 
                 1.650 
                 21.5 
                 −3.49 
               
               
                 9 
                   
                 1.392 
                 ASP 
                 0.146 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 1.855 
                 ASP 
                 1.860 
                 Plastic 
                 1.535 
                 56.3 
                 4.10 
               
               
                 11 
                   
                 7.834 
                 ASP 
                 1.000 
                   
                   
                   
                   
               
               
                 12 
                 Prism 
                 Plano 
                   
                 4.000 
                 Glass 
                 2.003 
                 28.3 
                 — 
               
               
                 13 
                   
                 Plano 
                   
                 1.824 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference Wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 1 
                 2 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −2.8042E+00 
                 −4.7069E+01 
                 −2.6572E+00 
                 9.8435E−01 
                 −3.5805E+00 
               
               
                 A4 = 
                 1.5304E−03 
                 8.0598E−04 
                 9.8554E−03 
                 3.0832E−03 
                 −1.9891E−02 
               
               
                 A6 = 
                 −8.9542E−05 
                 −1.4511E−04 
                 −2.4941E−03 
                 −1.7015E−03 
                 5.0880E−03 
               
               
                 A8 = 
                 −6.7025E−06 
                 −2.6261E−05 
                 3.3016E−04 
                 1.7285E−04 
                 −7.3257E−04 
               
               
                 A10 = 
                 −3.0587E−07 
                 1.9556E−07 
                 −3.3256E−05 
                 1.4625E−06 
                 8.2342E−05 
               
               
                 A12 = 
                 −2.7294E−08 
                 6.3086E−08 
                 2.0053E−06 
                 −1.1317E−06 
                 −5.6132E−06 
               
               
                 A14 = 
                   
                   
                 −4.6175E−08 
                 5.1055E−08 
                 1.6014E−07 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −5.3871E+00 
                 −1.0392E+00 
                 −3.3750E+00 
                 −2.4268E+00 
                 −4.8592E−01 
               
               
                 A4 = 
                 −1.2811E−02 
                 9.3585E−03 
                 1.0305E−02 
                 −1.1912E−02 
                 3.8325E−03 
               
               
                 A6 = 
                 3.1927E−03 
                 −2.0401E−03 
                 4.4585E−03 
                 1.5311E−02 
                 −8.7642E−04 
               
               
                 A8 = 
                 −2.8890E−04 
                 1.4093E−04 
                 −2.4466E−03 
                 −6.1542E−03 
                 1.3984E−04 
               
               
                 A10 = 
                 7.6028E−06 
                 −3.1965E−06 
                 4.4169E−04 
                 1.4040E−03 
                 9.5682E−05 
               
               
                 A12 = 
                 1.5699E−06 
                 1.9340E−07 
                 −2.4383E−05 
                 −1.8755E−04 
                 −4.8338E−05 
               
               
                 A14 = 
                 −1.8680E−07 
                 −3.8218E−08 
                 −1.8018E−06 
                 1.4054E−05 
                 9.1339E−06 
               
               
                 A16 = 
                 6.1799E−09 
                   
                 1.7674E−07 
                 −4.6920E−07 
                 −5.9032E−07 
               
               
                   
               
            
           
         
       
     
     In Table 1, the curvature radius, the thickness and the focal length are shown in millimeters (mm). Surface numbers 0-16 represent the surfaces sequentially arranged from the object-side to the image-side along the optical axis. In Table 2, k represents the conic coefficient of the equation of the aspheric surface profiles. A4-A16 represent the aspheric coefficients ranging from the 4th order to the 16th order. The tables presented below for each embodiment are the corresponding schematic parameter and aberration curves, and the definitions of the tables are the same as Table 1 and Table 2 of the 1st embodiment. Therefore, an explanation in this regard will not be provided again. 
     2nd Embodiment 
       FIG.  2 A  is a schematic view of an image capturing device according to the 2nd embodiment of the present disclosure.  FIG.  2 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 2nd embodiment. 
     In  FIG.  2 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  290 . The image capturing optical system includes, in order from an object side to an image side, an aperture stop  200 , a first lens element  210 , a second lens element  220 , a third lens element  230 , a fourth lens element  240 , a fifth lens element  250 , an IR-cut filter  270 , and an image surface  280 , wherein the image capturing optical system has a total of five lens elements ( 210 - 250 ) with refractive power, which are non-cemented lens element. 
     The first lens element  210  with positive refractive power has an object-side surface  211  being convex in a paraxial region thereof and an image-side surface  212  being convex in a paraxial region thereof, which are both aspheric, and the first lens element  210  is made of plastic material. 
     The second lens element  220  with negative refractive power has an object-side surface  221  being concave in a paraxial region thereof and an image-side surface  222  being concave in a paraxial region thereof, which are both aspheric, the second lens element  220  is made of plastic material, and the image-side surface  222  has at least one convex shape in an off-axis region thereof. 
     The third lens element  230  with positive refractive power has an object-side surface  231  being convex in a paraxial region thereof and an image-side surface  232  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  230  is made of plastic material. 
     The fourth lens element  240  with positive refractive power has an object-side surface  241  being convex in a paraxial region thereof and an image-side surface  242  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  240  is made of plastic material. 
     The fifth lens element  250  with negative refractive power has an object-side surface  251  being concave in a paraxial region thereof and an image-side surface  252  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  250  is made of plastic material, and both of the object-side surface  251  and the image-side surface  252  have at least one convex shape in an off-axis region thereof. 
     The IR-cut filter  270  is made of glass and located between the fifth lens element  250  and the image surface  280 , and will not affect the focal length of the image capturing optical system. The image sensor  290  is disposed on or near the image surface  280  of the image capturing optical system. 
     The detailed optical data of the second embodiment is shown in TABLE 3, and the aspheric surface data is shown in TABLE 4, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 3 
               
             
            
               
                   
               
               
                 (Embodiment 2) 
               
               
                 f = 8.88 mm, Fno = 2.00, HFOV = 14.0 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Stop 
                 Plano 
                   
                 −0.530 
                   
                   
                   
                   
               
               
                 2 
                 Lens 1 
                 4.549 
                 ASP 
                 2.583 
                 Plastic 
                 1.544 
                 55.9 
                 6.05 
               
               
                 3 
                   
                 −9.559 
                 ASP 
                 0.504 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −2.484 
                 ASP 
                 0.500 
                 Plastic 
                 1.639 
                 23.5 
                 −2.88 
               
               
                 5 
                   
                 7.685 
                 ASP 
                 0.200 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 4.107 
                 ASP 
                 0.674 
                 Plastic 
                 1.639 
                 23.5 
                 5.86 
               
               
                 7 
                   
                 −39.659 
                 ASP 
                 0.185 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 2.303 
                 ASP 
                 0.708 
                 Plastic 
                 1.544 
                 55.9 
                 8.27 
               
               
                 9 
                   
                 4.208 
                 ASP 
                 0.391 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 −20.975 
                 ASP 
                 0.913 
                 Plastic 
                 1.544 
                 55.9 
                 −22.04 
               
               
                 11 
                   
                 28.436 
                 ASP 
                 1.549 
                   
                   
                   
                   
               
               
                 12 
                 IR-cut 
                 Plano 
                   
                 0.400 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                   
                 filter 
                   
                   
                   
                   
                   
                   
                   
               
               
                 13 
                   
                 Plano 
                   
                 2.541 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 −30.000000 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 4 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 2 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −1.1584E+00 
                 −4.3570E+01 
                 −8.9586E+00 
                 2.5013E+00 
                 1.1842E+00 
               
               
                 A4 = 
                 6.3572E−04 
                 4.8378E−03 
                 1.6859E−02 
                 −2.1090E−02 
                 −6.9882E−02 
               
               
                 A6 = 
                 −4.4595E−05 
                 −3.1230E−03 
                 −9.2693E−03 
                 5.8186E−03 
                 1.6939E−02 
               
               
                 A8 = 
                 −3.2254E−05 
                 6.8669E−04 
                 4.2304E−03 
                 −4.9787E−04 
                 −2.0971E−03 
               
               
                 A10 = 
                 7.5913E−06 
                 −2.1563E−05 
                 −1.2293E−03 
                 −4.2278E−05 
                 2.2031E−05 
               
               
                 A12 = 
                 −1.0427E−06 
                 −1.7377E−05 
                 2.1927E−04 
                 −1.4353E−05 
                 8.0748E−06 
               
               
                 A14 = 
                 4.6052E−08 
                 2.0265E−06 
                 −2.3958E−05 
                 1.5481E−07 
                 −1.5049E−06 
               
               
                 A16 = 
                   
                   
                 1.2843E−06 
                 5.0453E−07 
                 4.0675E−07 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −5.0000E+01 
                 −6.1392E+00 
                 −1.5701E+01 
                 −1.5378E+01 
                 3.0000E+00 
               
               
                 A4 = 
                 −2.7275E−02 
                 6.5688E−03 
                 −1.1786E−03 
                 9.1669E−03 
                 2.0443E−02 
               
               
                 A6 = 
                 1.4484E−02 
                 9.8039E−03 
                 1.4359E−02 
                 1.8322E−02 
                 4.4605E−03 
               
               
                 A8 = 
                 −5.1390E−03 
                 −6.7248E−03 
                 −6.6193E−03 
                 −9.0951E−03 
                 −2.2675E−03 
               
               
                 A10 = 
                 1.4877E−03 
                 2.2586E−03 
                 3.0376E−03 
                 3.8962E−03 
                 5.8146E−04 
               
               
                 A12 = 
                 −2.9738E−04 
                 −5.3074E−04 
                 −1.0896E−03 
                 −1.1432E−03 
                 −4.3937E−05 
               
               
                 A14 = 
                 3.5128E−05 
                 7.6999E−05 
                 1.9747E−04 
                 1.7691E−04 
                 −3.8702E−06 
               
               
                 A16 = 
                 −1.5322E−06 
                 −4.6150E−06 
                 −1.3375E−05 
                 −1.0977E−05 
                 7.2252E−08 
               
               
                   
               
            
           
         
       
     
     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 3 and Table 4 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 2 nd  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 f [mm] 
                 8.88 
                 R3/f2 
                 0.86 
               
               
                   
                 Fno 
                 2.00 
                 f2/f1 
                 −0.48 
               
               
                   
                 HFOV [deg.] 
                 14.0 
                 f4/R6 
                 −0.21 
               
               
                   
                 tan(HFOV) 
                 0.25 
                 Σ|f/fx| 
                 7.54 
               
               
                   
                 Nmax 
                 1.639 
                 Rimg [mm] 
                 −30.00 
               
               
                   
                 CT1/(CT2 + CT3) 
                 2.20 
                 SD11/SD52 
                 1.09 
               
               
                   
                 T12/(T23 + T34 + T45) 
                 0.65 
               
               
                   
                   
               
            
           
         
       
     
     3rd Embodiment 
       FIG.  3 A  is a schematic view of an image capturing device according to the 3rd embodiment of the present disclosure.  FIG.  3 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 3rd embodiment. 
     In  FIG.  3 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  390 . The image capturing optical system includes, in order from an object side to an image side, an aperture stop  300 , a first lens element  310 , a second lens element  320 , a third lens element  330 , a fourth lens element  340 , a fifth lens element  350 , an IR-cut filter  370 , and an image surface  380 , wherein the image capturing optical system has a total of five lens elements ( 310 - 350 ) with refractive power, which are non-cemented lens element. 
     The first lens element  310  with positive refractive power has an object-side surface  311  being convex in a paraxial region thereof and an image-side surface  312  being convex in a paraxial region thereof, which are both aspheric, the first lens element  310  is made of plastic material. 
     The second lens element  320  with negative refractive power has an object-side surface  321  being concave in a paraxial region thereof and an image-side surface  322  being concave in a paraxial region thereof, which are both aspheric, the second lens element  320  is made of plastic material, and the image-side surface  322  having at least one convex shape in an off-axis region thereof. 
     The third lens element  330  with positive refractive power has an object-side surface  331  being convex in a paraxial region thereof and an image-side surface  332  being concave in a paraxial region thereof, which are both aspheric, and the third lens element  330  is made of plastic material. 
     The fourth lens element  340  with positive refractive power has an object-side surface  341  being convex in a paraxial region thereof and an image-side surface  342  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  340  is made of plastic material. 
     The fifth lens element  350  with negative refractive power has an object-side surface  351  being concave in a paraxial region thereof and an image-side surface  352  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  350  is made of plastic material, and both of the object-side surface  351  and the image-side surface  352  have at least one convex shape in an off-axis region thereof. 
     The IR-cut filter  370  is made of glass and located between the fifth lens element  350  and the image surface  380 , and will not affect the focal length of the image capturing optical system. The image sensor  390  is disposed on or near the image surface  380  of the image capturing optical system. 
     The detailed optical data of the third embodiment is shown in TABLE 5, and the aspheric surface data is shown in TABLE 6, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 5 
               
             
            
               
                   
               
               
                 (Embodiment 3) 
               
               
                 f = 8.55 mm, Fno = 1.65, HFOV = 18.0 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Stop 
                 Plano 
                   
                 −0.552 
                   
                   
                   
                   
               
               
                 2 
                 Lens 1 
                 5.069 
                 ASP 
                 3.000 
                 Plastic 
                 1.544 
                 55.9 
                 5.28 
               
               
                 3 
                   
                 −5.246 
                 ASP 
                 0.400 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −2.152 
                 ASP 
                 0.500 
                 Plastic 
                 1.607 
                 26.6 
                 −2.25 
               
               
                 5 
                   
                 4.091 
                 ASP 
                 0.200 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 4.631 
                 ASP 
                 0.613 
                 Plastic 
                 1.650 
                 21.4 
                 7.52 
               
               
                 7 
                   
                 83.211 
                 ASP 
                 0.156 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 1.971 
                 ASP 
                 1.513 
                 Plastic 
                 1.544 
                 55.9 
                 3.67 
               
               
                 9 
                   
                 118.721 
                 ASP 
                 0.347 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 −4.600 
                 ASP 
                 0.814 
                 Plastic 
                 1.544 
                 55.9 
                 −7.33 
               
               
                 11 
                   
                 31.924 
                 ASP 
                 0.703 
                   
                   
                   
                   
               
               
                 12 
                 IR-cut 
                 Plano 
                   
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                   
                 filter 
                   
                   
                   
                   
                   
                   
                   
               
               
                 13 
                   
                 Plano 
                   
                 2.847 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 6 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 2 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −1.3585E+00 
                 −2.7767E+01 
                 −4.8579E+00 
                 −3.3016E+01 
                 −7.7355E−01 
               
               
                 A4 = 
                 1.4218E−04 
                 −7.2498E−04 
                 1.3121E−02 
                 −2.6116E−02 
                 −5.2539E−02 
               
               
                 A6 = 
                 −1.6306E−04 
                 −2.2655E−03 
                 −7.1197E−03 
                 5.6094E−03 
                 9.8318E−03 
               
               
                 A8 = 
                 −1.8191E−05 
                 3.1377E−04 
                 2.3747E−03 
                 −4.9389E−04 
                 −1.0851E−03 
               
               
                 A10 = 
                 2.0653E−06 
                 −2.0134E−06 
                 −5.1470E−04 
                 −2.5719E−05 
                 1.1517E−05 
               
               
                 A12 = 
                 −4.3682E−07 
                 −2.6454E−06 
                 7.2456E−05 
                 1.2238E−06 
                 5.3802E−06 
               
               
                 A14 = 
                 8.8272E−09 
                 1.5190E−07 
                 −5.8702E−06 
                 7.8554E−07 
                 4.4894E−07 
               
               
                 A16 = 
                   
                   
                 2.0401E−07 
                 −5.0865E−08 
                 −6.0659E−08 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −5.0000E+01 
                 −4.6890E+00 
                 −2.0000E+01 
                 −9.1180E+00 
                 −2.0000E+01 
               
               
                 A4 = 
                 −2.1894E−02 
                 7.2604E−03 
                 5.6113E−03 
                 9.2445E−03 
                 2.0017E−02 
               
               
                 A6 = 
                 7.6650E−03 
                 2.8813E−03 
                 4.4644E−03 
                 5.9422E−03 
                 −1.3504E−03 
               
               
                 A8 = 
                 −2.7259E−03 
                 −2.6818E−03 
                 −2.6350E−03 
                 −3.9193E−03 
                 −3.5177E−04 
               
               
                 A10 = 
                 6.7769E−04 
                 9.3204E−04 
                 1.2824E−03 
                 1.6956E−03 
                 6.5017E−05 
               
               
                 A12 = 
                 −1.0210E−04 
                 −1.9913E−04 
                 −3.7993E−04 
                 −4.1985E−04 
                 5.1341E−06 
               
               
                 A14 = 
                 8.7551E−06 
                 2.2273E−05 
                 5.3812E−05 
                 5.2563E−05 
                 −2.1823E−06 
               
               
                 A16 = 
                 −3.1472E−07 
                 −9.6382E−07 
                 −2.8329E−06 
                 −2.5861E−06 
                 1.4170E−07 
               
               
                   
               
            
           
         
       
     
     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 5 and Table 6 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 3 rd  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 f [mm] 
                 8.55 
                 R3/f2 
                 0.96 
               
               
                   
                 Fno 
                 1.65 
                 f2/f1 
                 −0.43 
               
               
                   
                 HFOV [deg.] 
                 18.0 
                 f4/R6 
                 0.04 
               
               
                   
                 tan(HFOV) 
                 0.32 
                 Σ|f/fx| 
                 10.05 
               
               
                   
                 Nmax 
                 1.650 
                 Rimg [mm] 
                 ∞ 
               
               
                   
                 CT1/(CT2 + CT3) 
                 2.70 
                 SD11/SD52 
                 1.05 
               
               
                   
                 T12/(T23 + T34 + T45) 
                 0.57 
               
               
                   
                   
               
            
           
         
       
     
     4th Embodiment 
       FIG.  4 A  is a schematic view of an image capturing device according to the 4th embodiment of the present disclosure.  FIG.  4 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 4th embodiment. 
     In  FIG.  4 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  490 . The image capturing optical system includes, in order from an object side to an image side, a first lens element  410 , an aperture stop  400 , a second lens element  420 , a third lens element  430 , a fourth lens element  440 , a fifth lens element  450 , a prism  460 , and an image surface  480 , wherein the image capturing optical system has a total of five lens elements ( 410 - 450 ) with refractive power, which are non-cemented lens element. 
     The first lens element  410  with positive refractive power has an object-side surface  411  being convex in a paraxial region thereof and an image-side surface  412  being convex in a paraxial region thereof, which are both aspheric, the first lens element  410  is made of plastic material. 
     The second lens element  420  with negative refractive power has an object-side surface  421  being concave in a paraxial region thereof and an image-side surface  422  being concave in a paraxial region thereof, which are both aspheric, the second lens element  420  is made of plastic material, and the image-side surface  422  having at least one convex shape in an off-axis region thereof. 
     The third lens element  430  with positive refractive power has an object-side surface  431  being convex in a paraxial region thereof and an image-side surface  432  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  430  is made of plastic material. 
     The fourth lens element  440  with positive refractive power has an object-side surface  441  being convex in a paraxial region thereof and an image-side surface  442  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  440  is made of plastic material. 
     The fifth lens element  450  with negative refractive power has an object-side surface  451  being concave in a paraxial region thereof and an image-side surface  452  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  450  is made of plastic material, and the object-side surface  451  having at least one convex shape in an off-axis region thereof. 
     The prism  460  is made of glass and located between the fifth lens element  450  and the image surface  480 , and will not affect the focal length of the image capturing optical system. The image sensor  490  is disposed on or near the image surface  480  of the image capturing optical system. 
     The detailed optical data of the fourth embodiment is shown in TABLE 7, and the aspheric surface data is shown in TABLE 8, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 7 
               
             
            
               
                   
               
               
                 (Embodiment 4) 
               
               
                 f = 10.11 mm, Fno = 1.95, HFOV = 12.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Lens 1 
                 4.385 
                 ASP 
                 2.361 
                 Plastic 
                 1.544 
                 55.9 
                 6.63 
               
               
                 2 
                   
                 −16.427 
                 ASP 
                 0.543 
                   
                   
                   
                   
               
               
                 3 
                 Stop 
                 Plano 
                   
                 0.561 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −2.174 
                 ASP 
                 0.600 
                 Plastic 
                 1.639 
                 23.5 
                 −2.26 
               
               
                 5 
                   
                 4.789 
                 ASP 
                 0.105 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 3.265 
                 ASP 
                 0.738 
                 Plastic 
                 1.639 
                 23.5 
                 4.26 
               
               
                 7 
                   
                 −14.998 
                 ASP 
                 0.050 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 2.596 
                 ASP 
                 1.034 
                 Plastic 
                 1.544 
                 55.9 
                 5.22 
               
               
                 9 
                   
                 25.969 
                 ASP 
                 0.194 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 −8.170 
                 ASP 
                 0.615 
                 Plastic 
                 1.544 
                 55.9 
                 −7.75 
               
               
                 11 
                   
                 8.955 
                 ASP 
                 0.500 
                   
                   
                   
                   
               
               
                 12 
                 Prism 
                 Plano 
                   
                 5.500 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 13 
                   
                 Plano 
                   
                 0.628 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 8 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 1 
                 2 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −6.0042E−01 
                 1.8670E+01 
                 −7.9811E+00 
                 −1.2564E+00 
                 −4.4191E+00 
               
               
                 A4 = 
                 5.9943E−04 
                 6.4884E−03 
                 1.7403E−02 
                 −4.3331E−02 
                 −8.7347E−02 
               
               
                 A6 = 
                 −5.3523E−05 
                 −1.4506E−03 
                 −1.1231E−02 
                 4.9297E−03 
                 1.7841E−02 
               
               
                 A8 = 
                 1.3462E−05 
                 1.1847E−04 
                 4.6601E−03 
                 −3.3297E−04 
                 −1.3101E−03 
               
               
                 A10 = 
                 −7.6268E−06 
                 −1.3374E−06 
                 −1.2573E−03 
                   
                   
               
               
                 A12 = 
                 1.0837E−06 
                 −1.4656E−06 
                 2.0449E−04 
                   
                   
               
               
                 A14 = 
                 −7.4673E−08 
                 1.1476E−07 
                 −1.8262E−05 
                   
                   
               
               
                 A16 = 
                   
                   
                 6.7279E−07 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −1.2390E+01 
                 −1.0948E+01 
                 2.0000E+01 
                 5.8004E+00 
                 −9.0000E+01 
               
               
                 A4 = 
                 −3.7665E−02 
                 1.4321E−02 
                 −1.5038E−02 
                 −5.6296E−03 
                 2.0031E−02 
               
               
                 A6 = 
                 1.9182E−02 
                 4.2552E−03 
                 1.1480E−02 
                 1.6189E−02 
                 −4.7042E−03 
               
               
                 A8 = 
                 −6.2046E−03 
                 −5.3919E−03 
                 −5.5390E−03 
                 −9.0573E−03 
                 2.8878E−04 
               
               
                 A10 = 
                 1.6589E−03 
                 2.1673E−03 
                 3.1606E−03 
                 4.2098E−03 
                 1.2103E−04 
               
               
                 A12 = 
                 −2.7381E−04 
                 −5.5995E−04 
                 −1.1206E−03 
                 −1.1645E−03 
                 −2.4192E−05 
               
               
                 A14 = 
                 2.4736E−05 
                 7.8974E−05 
                 1.8783E−04 
                 1.6479E−04 
                 1.3037E−06 
               
               
                 A16 = 
                 −9.6266E−07 
                 −4.3616E−06 
                 −1.1723E−05 
                 −9.2173E−06 
               
               
                   
               
            
           
         
       
     
     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 7 and Table 8 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 4 th  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 f [mm] 
                 10.11 
                 R3/f2 
                 0.96 
               
               
                   
                 Fno 
                 1.95 
                 f2/f1 
                 −0.34 
               
               
                   
                 HFOV [deg.] 
                 12.5 
                 f4/R6 
                 −0.35 
               
               
                   
                 tan(HFOV) 
                 0.22 
                 Σ|f/fx| 
                 11.61 
               
               
                   
                 Nmax 
                 1.639 
                 Rimg [mm] 
                 ∞ 
               
               
                   
                 CT1/(CT2 + CT3) 
                 1.76 
                 SD11/SD52 
                 1.46 
               
               
                   
                 T12/(T23 + T34 + T45) 
                 3.16 
               
               
                   
                   
               
            
           
         
       
     
     5th Embodiment 
       FIG.  5 A  is a schematic view of an image capturing device according to the 5th embodiment of the present disclosure.  FIG.  5 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 5th embodiment. 
     In  FIG.  5 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  590 . The image capturing optical system includes, in order from an object side to an image side, a first lens element  510 , an aperture stop  500 , a second lens element  520 , a third lens element  530 , a fourth lens element  540 , a fifth lens element  550 , a prism  560  and an image surface  580 , wherein the image capturing optical system has a total of five lens elements ( 510 - 550 ) with refractive power, which are non-cemented lens element. 
     The first lens element  510  with positive refractive power has an object-side surface  511  being convex in a paraxial region thereof and an image-side surface  512  being convex in a paraxial region thereof, which are both aspheric, the first lens element  510  is made of plastic material. 
     The second lens element  520  with negative refractive power has an object-side surface  521  being concave in a paraxial region thereof and an image-side surface  522  being concave in a paraxial region thereof, which are both aspheric, and the second lens element  520  is made of plastic material. 
     The third lens element  530  with positive refractive power has an object-side surface  531  being convex in a paraxial region thereof and an image-side surface  532  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  530  is made of plastic material. 
     The fourth lens element  540  with positive refractive power has an object-side surface  541  being convex in a paraxial region thereof and an image-side surface  542  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  540  is made of plastic material. 
     The fifth lens element  550  with negative refractive power has an object-side surface  551  being concave in a paraxial region thereof and an image-side surface  552  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  550  is made of plastic material and the object-side surface  551  has at least one convex shape in an off-axis region thereof. 
     The prism  560  is made of glass and located between the fifth lens element  550  and the image surface  580 , and will not affect the focal length of the image capturing optical system. The image sensor  590  is disposed on or near the image surface  580  of the image capturing optical system. 
     The detailed optical data of the fifth embodiment is shown in TABLE 9, and the aspheric surface data is shown in TABLE 10, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 9 
               
             
            
               
                   
               
               
                 (Embodiment 5) 
               
               
                 f = 10.11 mm, Fno = 1.95, HFOV = 12.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Lens 1 
                 4.403 
                 ASP 
                 2.010 
                 Plastic 
                 1.544 
                 55.9 
                 6.72 
               
               
                 2 
                   
                 −18.125 
                 ASP 
                 0.688 
                   
                   
                   
                   
               
               
                 3 
                 Stop 
                 Plano 
                   
                 0.608 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −2.683 
                 ASP 
                 0.600 
                 Plastic 
                 1.639 
                 23.5 
                 −2.51 
               
               
                 5 
                   
                 4.317 
                 ASP 
                 0.119 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 4.501 
                 ASP 
                 0.972 
                 Plastic 
                 1.639 
                 23.5 
                 4.93 
               
               
                 7 
                   
                 −9.629 
                 ASP 
                 0.050 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 2.458 
                 ASP 
                 0.954 
                 Plastic 
                 1.544 
                 55.9 
                 6.23 
               
               
                 9 
                   
                 7.725 
                 ASP 
                 0.191 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 −18.713 
                 ASP 
                 0.600 
                 Plastic 
                 1.544 
                 55.9 
                 −10.52 
               
               
                 11 
                   
                 8.345 
                 ASP 
                 0.600 
                   
                   
                   
                   
               
               
                 12 
                 Prism 
                 Plano 
                   
                 5.500 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 13 
                   
                 Plano 
                   
                 0.558 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 10 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 1 
                 2 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −4.0010E−01 
                 −2.2709E+01 
                 −1.0153E+01 
                 −1.4923E+01 
                 −2.3792E+01 
               
               
                 A4 = 
                 5.9032E−04 
                 5.3970E−03 
                 7.6756E−03 
                   
                 −1.3155E−02 
               
               
                 A6 = 
                 −1.0997E−05 
                 −9.1966E−04 
                 −2.5417E−03 
                   
                 4.2092E−03 
               
               
                 A8 = 
                 5.0880E−06 
                 3.9966E−05 
                 3.8181E−04 
                   
                 −3.7879E−04 
               
               
                 A10 = 
                 −5.3589E−06 
                 −1.7378E−06 
                 −1.8343E−05 
                   
                   
               
               
                 A12 = 
                 7.0585E−07 
                   
                   
                   
                   
               
               
                 A14 = 
                 −4.9449E−08 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −1.9754E+01 
                 −8.7679E+00 
                 −2.5646E+01 
                 1.7181E+01 
                 −9.0000E+01 
               
               
                 A4 = 
                 −1.8128E−02 
                 1.7898E−02 
                 −3.3818E−02 
                 −1.9406E−02 
                 2.3902E−02 
               
               
                 A6 = 
                 2.1147E−02 
                 −3.7957E−03 
                 1.5644E−02 
                 1.9164E−02 
                 −6.7561E−03 
               
               
                 A8 = 
                 −1.2841E−02 
                 4.6431E−05 
                 2.3431E−03 
                 −4.3974E−03 
                 8.8262E−04 
               
               
                 A10 = 
                 4.9611E−03 
                   
                 −3.3413E−03 
                 2.0059E−04 
                 −2.9192E−05 
               
               
                 A12 = 
                 −1.1341E−03 
                   
                 9.7993E−04 
                 7.1580E−05 
                   
               
               
                 A14 = 
                 1.4228E−04 
                   
                 −1.2917E−04 
                 −7.2791E−06 
                   
               
               
                 A16 = 
                 −7.6095E−06 
                   
                 6.8586E−06 
               
               
                   
               
            
           
         
       
     
     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 9 and Table 10 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 Embodiment 5 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 f [mm] 
                 10.11 
                 R3/f2 
                 1.07 
               
               
                   
                 Fno 
                 1.95 
                 f2/f1 
                 −0.37 
               
               
                   
                 HFOV [deg.] 
                 12.5 
                 f4/R6 
                 −0.65 
               
               
                   
                 tan(HFOV) 
                 0.22 
                 Σ|f/fx| 
                 10.17 
               
               
                   
                 Nmax 
                 1.639 
                 Rimg [mm] 
                 ∞ 
               
               
                   
                 CT1/(CT2 + CT3) 
                 1.28 
                 SD11/SD52 
                 1.43 
               
               
                   
                 T12/(T23 + T34 + T45) 
                 3.60 
               
               
                   
                   
               
            
           
         
       
     
     6th Embodiment 
       FIG.  6 A  is a schematic view of an image capturing device according to the 6th embodiment of the present disclosure.  FIG.  6 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 6th embodiment. 
     In  FIG.  6 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  690 . The image capturing optical system includes, in order from an object side to an image side, a first lens element  610 , an aperture stop  600 , a second lens element  620 , a third lens element  630 , a fourth lens element  640 , a fifth lens element  650 , a prism  660  and an image surface  680 , wherein the image capturing optical system has a total of five lens elements ( 610 - 650 ) with refractive power, which are non-cemented lens element. 
     The first lens element  610  with positive refractive power has an object-side surface  611  being convex in a paraxial region thereof and an image-side surface  612  being convex in a paraxial region thereof, which are both aspheric, the first lens element  610  is made of plastic material. 
     The second lens element  620  with negative refractive power has an object-side surface  621  being concave in a paraxial region thereof and an image-side surface  622  being concave in a paraxial region thereof, which are both aspheric, the second lens element  620  is made of plastic material, and the image-side surface  622  has at least one convex shape in an off-axis region thereof. 
     The third lens element  630  with positive refractive power has an object-side surface  631  being concave in a paraxial region thereof and an image-side surface  632  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  630  is made of plastic material. 
     The fourth lens element  640  with negative refractive power has an object-side surface  641  being convex in a paraxial region thereof and an image-side surface  642  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  640  is made of plastic material. 
     The fifth lens element  650  with positive refractive power has an object-side surface  651  being convex in a paraxial region thereof and an image-side surface  652  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  650  is made of plastic material, and both of the object-side surface  651  and the image-side surface  625  have at least one convex shape in an off-axis region thereof. 
     The prism  660  is made of glass and located between the fifth lens element  650  and the image surface  680 , and will not affect the focal length of the image capturing optical system. The image sensor  690  is disposed on or near the image surface  680  of the image capturing optical system. 
     The detailed optical data of the sixth embodiment is shown in TABLE 11, and the aspheric surface data is shown in TABLE 12, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 11 
               
             
            
               
                   
               
               
                 (Embodiment 6) 
               
               
                 f = 10.33 mm, Fno = 1.38, HFOV = 12.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Lens 1 
                 5.597 
                 ASP 
                 2.677 
                 Plastic 
                 1.544 
                 55.9 
                 8.64 
               
               
                 2 
                   
                 −24.409 
                 ASP 
                 0.414 
                   
                   
                   
                   
               
               
                 3 
                 Stop 
                 Plano 
                   
                 0.703 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −3.469 
                 ASP 
                 0.700 
                 Plastic 
                 1.639 
                 23.5 
                 −4.61 
               
               
                 5 
                   
                 21.163 
                 ASP 
                 0.400 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 −32.819 
                 ASP 
                 1.016 
                 Plastic 
                 1.639 
                 23.5 
                 9.01 
               
               
                 7 
                   
                 −4.956 
                 ASP 
                 0.050 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 3.102 
                 ASP 
                 1.207 
                 Plastic 
                 1.639 
                 23.5 
                 −13.98 
               
               
                 9 
                   
                 1.953 
                 ASP 
                 0.208 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 2.668 
                 ASP 
                 1.564 
                 Plastic 
                 1.544 
                 55.9 
                 6.63 
               
               
                 11 
                   
                 8.145 
                 ASP 
                 0.650 
                   
                   
                   
                   
               
               
                 12 
                 Prism 
                 Plano 
                   
                 5.500 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 13 
                   
                 Plano 
                   
                 0.570 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 12 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 1 
                 2 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −1.6983E−01 
                 1.8242E+01 
                 −8.1099E+00 
                 1.9319E+01 
                 1.7897E+01 
               
               
                 A4 = 
                 3.4920E−05 
                 4.7287E−03 
                 1.0749E−02 
                 −5.8800E−03 
                 −2.7463E−02 
               
               
                 A6 = 
                 3.2729E−05 
                 −1.6952E−04 
                 −1.4177E−03 
                 2.9835E−03 
                 8.3192E−03 
               
               
                 A8 = 
                 −9.0979E−06 
                 −3.7961E−05 
                 −3.9336E−05 
                 −7.9681E−04 
                 −1.2348E−03 
               
               
                 A10 = 
                 6.2626E−07 
                 3.0663E−06 
                 1.9132E−05 
                 9.2219E−05 
                 1.0470E−04 
               
               
                 A12 = 
                 −3.0411E−08 
                 −7.2076E−08 
                 −1.3255E−06 
                 −4.7220E−06 
                 −4.6266E−06 
               
               
                 A14 = 
                   
                   
                 3.0122E−08 
                 8.7015E−08 
                 8.3084E−08 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −8.5776E+00 
                 −2.2888E+00 
                 −3.2392E+00 
                 −7.7028E+00 
                 −9.0000E+01 
               
               
                 A4 = 
                 −9.5772E−03 
                 1.9796E−03 
                 2.9846E−02 
                 4.5261E−02 
                 1.7303E−02 
               
               
                 A6 = 
                 3.0089E−03 
                 −1.8896E−03 
                 −1.9276E−02 
                 −2.3257E−02 
                 −8.5626E−03 
               
               
                 A8 = 
                 −4.9321E−04 
                 5.4036E−04 
                 6.7816E−03 
                 6.9084E−03 
                 2.5589E−03 
               
               
                 A10 = 
                 6.8686E−05 
                 −9.6698E−05 
                 −1.4732E−03 
                 −1.2935E−03 
                 −5.0238E−04 
               
               
                 A12 = 
                 −6.8182E−06 
                 7.6031E−06 
                 1.8905E−04 
                 1.5095E−04 
                 6.3036E−05 
               
               
                 A14 = 
                 3.6689E−07 
                 −2.1938E−07 
                 −1.3081E−05 
                 −9.7778E−06 
                 −4.3358E−06 
               
               
                 A16 = 
                 −7.6112E−09 
                   
                 3.7339E−07 
                 2.6072E−07 
                 1.1807E−07 
               
               
                   
               
            
           
         
       
     
     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 11 and Table 12 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 6 th  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 f [mm] 
                 10.33 
                 R3/f2 
                 0.75 
               
               
                   
                 Fno 
                 1.38 
                 f2/f1 
                 −0.53 
               
               
                   
                 HFOV [deg.] 
                 12.5 
                 f4/R6 
                 2.82 
               
               
                   
                 tan(HFOV) 
                 0.22 
                 Σ|f/fx| 
                 6.88 
               
               
                   
                 Nmax 
                 1.639 
                 Rimg [mm] 
                 ∞ 
               
               
                   
                 CT1/(CT2 + CT3) 
                 1.56 
                 SD11/SD52 
                 1.42 
               
               
                   
                 T12/(T23 + T34 + T45) 
                 1.70 
               
               
                   
                   
               
            
           
         
       
     
     7th Embodiment 
       FIG.  7 A  is a schematic view of an image capturing device according to the 7th embodiment of the present disclosure.  FIG.  7 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 7th embodiment. 
     In  FIG.  7 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  790 . The image capturing optical system includes, in order from an object side to an image side, a first lens element  710 , an aperture stop  700 , a second lens element  720 , a third lens element  730 , a fourth lens element  740 , a fifth lens element  750 , a prism  760  and an image surface  780 , wherein the image capturing optical system has a total of five lens elements ( 710 - 750 ) with refractive power, which are non-cemented lens element. 
     The first lens element  710  with positive refractive power has an object-side surface  711  being convex in a paraxial region thereof and an image-side surface  712  being convex in a paraxial region thereof, which are both aspheric, the first lens element  710  is made of plastic material. 
     The second lens element  720  with negative refractive power has an object-side surface  721  being concave in a paraxial region thereof and an image-side surface  722  being concave in a paraxial region thereof, which are both aspheric, the second lens element  720  is made of plastic material, and the image-side surface  722  has at least one convex shape in an off-axis region thereof. 
     The third lens element  730  with positive refractive power has an object-side surface  731  being concave in a paraxial region thereof and an image-side surface  732  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  730  is made of plastic material. 
     The fourth lens element  740  with negative refractive power has an object-side surface  741  being convex in a paraxial region thereof and an image-side surface  742  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  740  is made of plastic material. 
     The fifth lens element  750  with positive refractive power has an object-side surface  751  being convex in a paraxial region thereof and an image-side surface  752  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  750  is made of plastic material, and the object-side surface  751  has at least one convex shape in an off-axis region thereof. 
     The prism  760  is made of glass and located between the fifth lens element  750  and the image surface  780 , and will not affect the focal length of the image capturing optical system. The image sensor  790  is disposed on or near the image surface  780  of the image capturing optical system. 
     The detailed optical data of the seventh embodiment is shown in TABLE 13, and the aspheric surface data is shown in TABLE 14, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 13 
               
             
            
               
                   
               
               
                 (Embodiment 7) 
               
               
                 f = 10.29 mm, Fno = 1.40, HFOV = 12.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Lens 1 
                 5.848 
                 ASP 
                 2.308 
                 Plastic 
                 1.544 
                 55.9 
                 10.27 
               
               
                 2 
                   
                 −108.886 
                 ASP 
                 0.323 
                   
                   
                   
                   
               
               
                 3 
                 Stop 
                 Plano 
                   
                 0.766 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −3.968 
                 ASP 
                 0.700 
                 Plastic 
                 1.639 
                 23.5 
                 −5.58 
               
               
                 5 
                   
                 37.421 
                 ASP 
                 0.407 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 −39.068 
                 ASP 
                 1.248 
                 Plastic 
                 1.639 
                 23.5 
                 5.94 
               
               
                 7 
                   
                 −3.501 
                 ASP 
                 0.050 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 4.258 
                 ASP 
                 1.328 
                 Plastic 
                 1.639 
                 23.5 
                 −4.97 
               
               
                 9 
                   
                 1.597 
                 ASP 
                 0.239 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 2.211 
                 ASP 
                 2.069 
                 Plastic 
                 1.544 
                 55.9 
                 4.86 
               
               
                 11 
                   
                 9.024 
                 ASP 
                 0.600 
                   
                   
                   
                   
               
               
                 12 
                 Prism 
                 Plano 
                   
                 5.500 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 13 
                   
                 Plano 
                   
                 0.651 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 14 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 1 
                 2 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −1.0328E−01 
                 2.0000E+01 
                 −6.4516E+00 
                 1.8282E+01 
                 1.6962E+01 
               
               
                 A4 = 
                 3.3169E−05 
                 2.7671E−03 
                 7.1187E−03 
                 −6.9851E−03 
                 −2.2437E−02 
               
               
                 A6 = 
                 4.0545E−05 
                 3.1316E−05 
                 −5.0689E−04 
                 2.9269E−03 
                 6.2069E−03 
               
               
                 A8 = 
                 −1.0660E−05 
                 −3.7921E−05 
                 −1.0253E−04 
                 −6.2642E−04 
                 −8.8897E−04 
               
               
                 A10 = 
                 7.7811E−07 
                 2.2008E−06 
                 1.7910E−05 
                 6.7565E−05 
                 7.7464E−05 
               
               
                 A12 = 
                 −3.3921E−08 
                 −4.2425E−08 
                 −1.0214E−06 
                 −3.5915E−06 
                 −3.7908E−06 
               
               
                 A14 = 
                   
                   
                 2.0897E−08 
                 7.5500E−08 
                 7.8457E−08 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −8.8989E+00 
                 −7.9360E−01 
                 −3.1213E+00 
                 −3.8534E+00 
                 −9.0000E+01 
               
               
                 A4 = 
                 −4.1634E−03 
                 4.5553E−03 
                 3.0423E−03 
                 6.0916E−03 
                 1.3752E−02 
               
               
                 A6 = 
                 1.0557E−03 
                 −8.1211E−04 
                 4.5634E−03 
                 9.7002E−04 
                 −5.6205E−03 
               
               
                 A8 = 
                 −1.4940E−04 
                 −3.0907E−05 
                 −1.6516E−03 
                 −1.1900E−04 
                 1.7705E−03 
               
               
                 A10 = 
                 1.8390E−05 
                 1.1467E−05 
                 2.3059E−04 
                 −1.0488E−04 
                 −3.9486E−04 
               
               
                 A12 = 
                 −1.5597E−06 
                 −1.0112E−06 
                 −1.2566E−05 
                 2.9858E−05 
                 5.5781E−05 
               
               
                 A14 = 
                 6.8817E−08 
                 3.0767E−08 
                 −1.7831E−07 
                 −3.0469E−06 
                 −4.3451E−06 
               
               
                 A16 = 
                 −1.1667E−09 
                   
                 3.1277E−08 
                 1.1106E−07 
                 1.4108E−07 
               
               
                   
               
            
           
         
       
     
     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 13 and Table 14 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 7 th  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 f [mm] 
                 10.29 
                 R3/f2 
                 0.71 
               
               
                   
                 Fno 
                 1.40 
                 f2/f1 
                 −0.54 
               
               
                   
                 HFOV [deg.] 
                 12.5 
                 f4/R6 
                 1.42 
               
               
                   
                 tan(HFOV) 
                 0.22 
                 Σ|f/fx| 
                 8.77 
               
               
                   
                 Nmax 
                 1.639 
                 Rimg [mm] 
                 ∞ 
               
               
                   
                 CT1/(CT2 + CT3) 
                 1.18 
                 SD11/SD52 
                 1.38 
               
               
                   
                 T12/(T23 + T34 + T45) 
                 1.56 
               
               
                   
                   
               
            
           
         
       
     
     8th Embodiment 
       FIG.  8 A  is a schematic view of an image capturing device according to the 8th embodiment of the present disclosure.  FIG.  8 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 8th embodiment. 
     In  FIG.  8 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  890 . The image capturing optical system includes, in order from an object side to an image side, an aperture stop  800 , a first lens element  810 , a second lens element  820 , a third lens element  830 , a fourth lens element  840 , a fifth lens element  850 , an IR-cut filter  870 , and an image surface  880 , wherein the image capturing optical system has a total of five lens elements ( 810 - 850 ) with refractive power, which are non-cemented lens element. 
     The first lens element  810  with positive refractive power has an object-side surface  811  being convex in a paraxial region thereof and an image-side surface  812  being convex in a paraxial region thereof, which are both aspheric, the first lens element  810  is made of glass. 
     The second lens element  820  with negative refractive power has an object-side surface  821  being concave in a paraxial region thereof and an image-side surface  822  being concave in a paraxial region thereof, which are both aspheric, the second lens element  820  is made of plastic material, and the image-side surface  822  has at least one convex shape in an off-axis region thereof. 
     The third lens element  830  with positive refractive power has an object-side surface  831  being convex in a paraxial region thereof and an image-side surface  832  being concave in a paraxial region thereof, which are both aspheric, and the third lens element  830  is made of plastic material. 
     The fourth lens element  840  with positive refractive power has an object-side surface  841  being convex in a paraxial region thereof and an image-side surface  842  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  840  is made of plastic material. 
     The fifth lens element  850  with negative refractive power has an object-side surface  851  being convex in a paraxial region thereof and an image-side surface  852  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  850  is made of plastic material, and both of the object-side surface  851  and the image-side surface  852  have at least one convex shape in an off-axis region thereof. 
     The IR-cut filter  870  is made of glass and located between the fifth lens element  850  and the image surface  880 , and will not affect the focal length of the image capturing optical system. The image sensor  890  is disposed on or near the image surface  880  of the image capturing optical system. 
     The detailed optical data of the eighth embodiment is shown in TABLE 15, and the aspheric surface data is shown in TABLE 16, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 15 
               
             
            
               
                   
               
               
                 (Embodiment 8) 
               
               
                 f = 7.22 mm, Fno = 1.72, HFOV = 21.0 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Stop 
                 Plano 
                   
                 0.029 
                   
                   
                   
                   
               
               
                 2 
                 Lens 1 
                 4.493 
                 ASP 
                 2.013 
                 Glass 
                 1.542 
                 62.9 
                 6.98 
               
               
                 3 
                   
                 −20.230 
                 ASP 
                 0.488 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −2.882 
                 ASP 
                 0.350 
                 Plastic 
                 1.633 
                 23.4 
                 −3.21 
               
               
                 5 
                   
                 7.207 
                 ASP 
                 0.266 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 2.474 
                 ASP 
                 0.470 
                 Plastic 
                 1.633 
                 23.4 
                 7.05 
               
               
                 7 
                   
                 5.143 
                 ASP 
                 0.100 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 2.355 
                 ASP 
                 1.717 
                 Plastic 
                 1.544 
                 55.9 
                 5.45 
               
               
                 9 
                   
                 8.498 
                 ASP 
                 0.902 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 2.841 
                 ASP 
                 0.450 
                 Plastic 
                 1.530 
                 55.8 
                 −12.53 
               
               
                 11 
                   
                 1.881 
                 ASP 
                 1.300 
                   
                   
                   
                   
               
               
                 12 
                 IR-cut 
                 Plano 
                   
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                   
                 filter 
                   
                   
                   
                   
                   
                   
                   
               
               
                 13 
                   
                 Plano 
                   
                 0.980 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 16 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 2 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −1.5623E+00 
                 −5.0000E+01 
                 −9.9074E+00 
                 −5.0000E+01 
                 −6.2393E−01 
               
               
                 A4 = 
                 −7.7674E−04 
                 2.3984E−03 
                 −1.1075E−03 
                 −3.4368E−02 
                 −5.2452E−02 
               
               
                 A6 = 
                 −5.3943E−04 
                 −5.4201E−03 
                 −8.2465E−03 
                 5.1342E−03 
                 8.8352E−03 
               
               
                 A8 = 
                 8.7492E−05 
                 4.7260E−04 
                 2.6725E−03 
                 −6.0650E−04 
                 −1.2967E−03 
               
               
                 A10 = 
                 −7.3206E−05 
                 3.1413E−05 
                 −5.4290E−04 
                 9.6271E−06 
                 3.2135E−05 
               
               
                 A12 = 
                 1.6833E−05 
                 −5.7110E−06 
                 6.9822E−05 
                 5.1140E−06 
                 1.0360E−05 
               
               
                 A14 = 
                 −1.6919E−06 
                 8.1852E−08 
                 −4.3520E−06 
                 3.7827E−08 
                 1.3164E−06 
               
               
                 A16 = 
                   
                   
                 9.0134E−08 
                 −3.2457E−08 
                 −2.3721E−07 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 0.0000E+00 
                 −6.9610E+00 
                 −1.9061E+01 
                 −1.1974E+01 
                 −4.7950E+00 
               
               
                 A4 = 
                 −1.5838E−02 
                 1.6857E−02 
                 −3.0451E−04 
                 −5.5201E−02 
                 −4.6313E−02 
               
               
                 A6 = 
                 5.9195E−03 
                 3.1510E−03 
                 9.1536E−03 
                 −5.3646E−03 
                 4.7433E−03 
               
               
                 A8 = 
                 −2.6842E−03 
                 −3.2384E−03 
                 −4.8569E−03 
                 7.8388E−03 
                 2.6306E−03 
               
               
                 A10 = 
                 6.9903E−04 
                 1.0449E−03 
                 1.2483E−03 
                 −2.8190E−03 
                 −1.5281E−03 
               
               
                 A12 = 
                 −9.7991E−05 
                 −1.8259E−04 
                 −1.8688E−04 
                 3.1394E−04 
                 3.5580E−04 
               
               
                 A14 = 
                 8.8325E−06 
                 1.8511E−05 
                 1.2072E−05 
                 2.8123E−05 
                 −3.9329E−05 
               
               
                 A16 = 
                 −4.4819E−07 
                 −8.1896E−07 
                 6.2260E−07 
                 −5.7300E−06 
                 1.6731E−06 
               
               
                   
               
            
           
         
       
     
     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 15 and Table 16 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 8 th  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 f [mm] 
                 7.22 
                 R3/f2 
                 0.90 
               
               
                 Fno 
                 1.72 
                 f2/f1 
                 −0.46 
               
               
                 HFOV [deg.] 
                 21.0 
                 f4/R6 
                 1.06 
               
               
                 tan(HFOV) 
                 0.38 
                 Σ|f/fx| 
                 6.21 
               
               
                 Nmax 
                 1.633 
                 Rimg [mm] 
                 ∞ 
               
               
                 CT1/(CT2 + CT3) 
                 2.45 
                 SD11/SD52 
                 0.89 
               
               
                 T12/(T23 + T34 + T45) 
                 0.38 
               
               
                   
               
            
           
         
       
     
     9th Embodiment 
       FIG.  9 A  is a schematic view of an image capturing device according to the 9th embodiment of the present disclosure.  FIG.  9 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 9th embodiment. 
     In  FIG.  9 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  990 . The image capturing optical system includes, in order from an object side to an image side, an aperture stop  900 , a first lens element  910 , a second lens element  920 , a third lens element  930 , a fourth lens element  940 , a fifth lens element  950 , an IR-cut filter  970  and an image surface  980 , wherein the image capturing optical system has a total of five lens elements ( 910 - 950 ) with refractive power, which are non-cemented lens element. 
     The first lens element  910  with positive refractive power has an object-side surface  911  being convex in a paraxial region thereof and an image-side surface  912  being concave in a paraxial region thereof, which are both aspheric, the first lens element  910  is made of plastic material. 
     The second lens element  920  with negative refractive power has an object-side surface  921  being concave in a paraxial region thereof and an image-side surface  922  being concave in a paraxial region thereof, which are both aspheric, the second lens element  920  is made of plastic material, and the image-side surface  922  has at least one convex shape in an off-axis region thereof. 
     The third lens element  930  with positive refractive power has an object-side surface  931  being convex in a paraxial region thereof and an image-side surface  932  being concave in a paraxial region thereof, which are both aspheric, and the third lens element  930  is made of plastic material. 
     The fourth lens element  940  with positive refractive power has an object-side surface  941  being convex in a paraxial region thereof and an image-side surface  942  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  940  is made of plastic material. 
     The fifth lens element  950  with positive refractive power has an object-side surface  951  being convex in a paraxial region thereof and an image-side surface  952  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  950  is made of plastic material, and both of the object-side surface  951  and the image-side surface  952  have at least one convex shape in an off-axis region thereof. 
     The IR-cut filter  970  is made of glass and located between the fifth lens element  950  and the image surface  980 , and will not affect the focal length of the image capturing optical system. The image sensor  990  is disposed on or near the image surface  980  of the image capturing optical system. 
     The detailed optical data of the ninth embodiment is shown in TABLE 17, and the aspheric surface data is shown in TABLE 18, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 17 
               
             
            
               
                   
               
               
                 (Embodiment 9) 
               
               
                 f = 7.81 mm, Fno = 1.83, HFOV = 19.7 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Stop 
                 Plano 
                   
                 −0.369 
                   
                   
                   
                   
               
               
                 2 
                 Lens 1 
                 4.256 
                 ASP 
                 0.980 
                 Plastic 
                 1.544 
                 55.9 
                 12.42 
               
               
                 3 
                   
                 10.566 
                 ASP 
                 1.015 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −27.721 
                 ASP 
                 0.500 
                 Plastic 
                 1.633 
                 23.4 
                 −8.61 
               
               
                 5 
                   
                 6.825 
                 ASP 
                 0.386 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 2.590 
                 ASP 
                 1.123 
                 Plastic 
                 1.544 
                 55.9 
                 22.39 
               
               
                 7 
                   
                 2.787 
                 ASP 
                 0.482 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 2.664 
                 ASP 
                 1.680 
                 Plastic 
                 1.544 
                 55.9 
                 8.39 
               
               
                 9 
                   
                 4.971 
                 ASP 
                 0.485 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 2.184 
                 ASP 
                 0.909 
                 Plastic 
                 1.530 
                 55.8 
                 92.26 
               
               
                 11 
                   
                 1.957 
                 ASP 
                 1.500 
                   
                   
                   
                   
               
               
                 12 
                 IR-cut 
                 Plano 
                   
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                   
                 filter 
                   
                   
                   
                   
                   
                   
                   
               
               
                 13 
                   
                 Plano 
                   
                 0.958 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 18 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 2 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −1.7257E+00 
                 −1.4703E+01 
                 −5.0000E+01 
                 2.9909E+00 
                 −2.7790E−01 
               
               
                 A4 = 
                 −9.0723E−04 
                 −8.7041E−03 
                 −1.7874E−02 
                 −2.5164E−02 
                 −2.3770E−02 
               
               
                 A6 = 
                 −7.1174E−04 
                 −1.7050E−03 
                 −2.5207E−03 
                 1.9995E−03 
                 3.9031E−03 
               
               
                 A8 = 
                 5.7658E−05 
                 3.6757E−04 
                 1.6376E−03 
                 −4.5654E−05 
                 −1.2303E−03 
               
               
                 A10 = 
                 −4.6530E−05 
                 −8.4903E−05 
                 −3.6875E−04 
                 1.0978E−05 
                 1.5859E−04 
               
               
                 A12 = 
                 7.5583E−06 
                 1.1860E−05 
                 6.9560E−05 
                 5.1926E−06 
                 −1.7682E−06 
               
               
                 A14 = 
                 −9.0739E−07 
                 −8.5881E−07 
                 −8.0356E−06 
                 −9.3665E−07 
                 −7.4364E−07 
               
               
                 A16 = 
                   
                   
                 3.6294E−07 
                 7.3674E−09 
                 1.2945E−08 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 0.0000E+00 
                 −1.8980E+00 
                 −2.0000E+01 
                 −6.7345E+00 
                 −3.5550E+00 
               
               
                 A4 = 
                 −3.2411E−02 
                 −1.9548E−03 
                 −1.4866E−02 
                 −2.1419E−02 
                 −2.5780E−02 
               
               
                 A6 = 
                 5.0197E−03 
                 4.0671E−03 
                 2.1752E−02 
                 −1.4158E−02 
                 −1.4664E−03 
               
               
                 A8 = 
                 −2.6624E−03 
                 −2.4874E−03 
                 −7.7154E−03 
                 1.2313E−02 
                 3.5233E−03 
               
               
                 A10 = 
                 6.6021E−04 
                 7.9789E−04 
                 1.6639E−03 
                 −4.9403E−03 
                 −1.3981E−03 
               
               
                 A12 = 
                 −9.4952E−05 
                 −1.8240E−04 
                 −2.0773E−04 
                 1.1618E−03 
                 2.8974E−04 
               
               
                 A14 = 
                 8.9509E−06 
                 2.4274E−05 
                 9.5262E−06 
                 −1.4813E−04 
                 −3.1958E−05 
               
               
                 A16 = 
                 −4.4528E−07 
                 −1.3720E−06 
                 8.4835E−08 
                 7.7003E−06 
                 1.4702E−06 
               
               
                   
               
            
           
         
       
     
     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 17 and Table 18 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 9 th  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 f [mm] 
                 7.81 
                 R3/f2 
                 3.22 
               
               
                 Fno 
                 1.83 
                 f2/f1 
                 −0.69 
               
               
                 HFOV [deg.] 
                 19.7 
                 f4/R6 
                 3.01 
               
               
                 tan(HFOV) 
                 0.36 
                 Σ|f/fx| 
                 2.90 
               
               
                 Nmax 
                 1.633 
                 Rimg [mm] 
                 ∞ 
               
               
                 CT1/(CT2 + CT3) 
                 0.60 
                 SD11/SD52 
                 0.88 
               
               
                 T12/(T23 + T34 + T45) 
                 0.75 
               
               
                   
               
            
           
         
       
     
     10th Embodiment 
       FIG.  10 A  is a schematic view of an image capturing device according to the 10th embodiment of the present disclosure.  FIG.  10 B  shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing device according to the 10th embodiment. 
     In  FIG.  10 A , the image capturing device includes the image capturing optical system (not otherwise herein labeled) of the present disclosure and an image sensor  1090 . The image capturing optical system includes, in order from an object side to an image side, an aperture stop  1000 , a first lens element  1010 , a second lens element  1020 , a third lens element  1030 , a fourth lens element  1040 , a fifth lens element  1050 , an IR-cut filter  1070 , and an image surface  1080 , wherein the image capturing optical system has a total of five lens elements ( 1010 - 1050 ) with refractive power, which are non-cemented lens element. 
     The first lens element  1010  with positive refractive power has an object-side surface  1011  being convex in a paraxial region thereof and an image-side surface  1012  being convex in a paraxial region thereof, which are both aspheric, the first lens element  1010  is made of plastic material. 
     The second lens element  1020  with negative refractive power has an object-side surface  1021  being concave in a paraxial region thereof and an image-side surface  1022  being convex in a paraxial region thereof, which are both aspheric, the second lens element  1020  is made of plastic material, and the image-side surface  1022  has at least one convex shape in an off-axis region thereof. 
     The third lens element  1030  with positive refractive power has an object-side surface  1031  being concave in a paraxial region thereof and an image-side surface  1032  being convex in a paraxial region thereof, which are both aspheric, and the third lens element  1030  is made of plastic material. 
     The fourth lens element  1040  with negative refractive power has an object-side surface  1041  being convex in a paraxial region thereof and an image-side surface  1042  being concave in a paraxial region thereof, which are both aspheric, and the fourth lens element  1040  is made of plastic material. 
     The fifth lens element  1050  with positive refractive power has an object-side surface  1051  being convex in a paraxial region thereof and an image-side surface  1052  being concave in a paraxial region thereof, which are both aspheric, the fifth lens element  1050  is made of plastic material, and the object-side surface  1051  has at least one convex shape in an off-axis region thereof. 
     The IR-cut filter  1070  is made of glass and located between the fifth lens element  1050  and the image surface  1080 , and will not affect the focal length of the image capturing optical system. The image sensor  1090  is disposed on or near the image surface  1080  of the image capturing optical system. 
     The detailed optical data of the tenth embodiment is shown in TABLE 19, and the aspheric surface data is shown in TABLE 20, wherein the units of the curvature radius, the thickness and the focal length are expressed in mm, and HFOV is half of the maximal field of view. 
     
       
         
           
               
             
               
                 TABLE 19 
               
             
            
               
                   
               
               
                 (Embodiment 10) 
               
               
                 f = 8.36 mm, Fno = 1.25, HFOV = 14.7 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 Curvature 
                   
                   
                   
                   
                   
                 Focal 
               
               
                 Surface# 
                   
                 Radius 
                   
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                   
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Stop 
                 Plano 
                   
                 −1.032 
                   
                   
                   
                   
               
               
                 2 
                 Lens 1 
                 5.140 
                 ASP 
                 2.495 
                 Plastic 
                 1.544 
                 55.9 
                 7.11 
               
               
                 3 
                   
                 −13.006 
                 ASP 
                 0.675 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 −3.453 
                 ASP 
                 0.500 
                 Plastic 
                 1.639 
                 23.5 
                 −6.01 
               
               
                 5 
                   
                 −35.979 
                 ASP 
                 0.602 
                   
                   
                   
                   
               
               
                 6 
                 Lens 3 
                 −2.969 
                 ASP 
                 0.877 
                 Plastic 
                 1.570 
                 40.0 
                 16.09 
               
               
                 7 
                   
                 −2.483 
                 ASP 
                 0.100 
                   
                   
                   
                   
               
               
                 8 
                 Lens 4 
                 2.755 
                 ASP 
                 1.145 
                 Plastic 
                 1.639 
                 23.5 
                 −15.32 
               
               
                 9 
                   
                 1.802 
                 ASP 
                 0.141 
                   
                   
                   
                   
               
               
                 10 
                 Lens 5 
                 2.827 
                 ASP 
                 2.706 
                 Plastic 
                 1.544 
                 55.9 
                 6.58 
               
               
                 11 
                   
                 8.911 
                 ASP 
                 1.800 
                   
                   
                   
                   
               
               
                 12 
                 IR-cut 
                 Plano 
                   
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                   
                 filter 
                   
                   
                   
                   
                   
                   
                   
               
               
                 13 
                   
                 Plano 
                   
                 1.035 
                   
                   
                   
                   
               
               
                 14 
                 Image 
                 Plano 
                   
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength is d-line 587.6 nm 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 20 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface# 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 2 
                 3 
                 4 
                 5 
                 6 
               
               
                   
               
               
                 k = 
                 −3.0576E+00 
                 −4.6156E+01 
                 −6.9174E+00 
                 −5.0000E+01 
                 −7.2890E+00 
               
               
                 A4 = 
                 2.2615E−03 
                 1.3207E−03 
                 8.0709E−03 
                 4.2242E−03 
                 −1.6151E−02 
               
               
                 A6 = 
                 −8.3279E−05 
                 −2.2269E−04 
                 −2.4903E−03 
                 −1.7645E−03 
                 4.9827E−03 
               
               
                 A8 = 
                 −3.3604E−07 
                 −1.9315E−05 
                 3.4462E−04 
                 1.4842E−04 
                 −7.7040E−04 
               
               
                 A10 = 
                 1.2613E−07 
                 2.6321E−06 
                 −3.3055E−05 
                 1.5008E−06 
                 8.1725E−05 
               
               
                 A12 = 
                 −6.0907E−08 
                 −5.7185E−08 
                 1.9571E−06 
                 −9.6253E−07 
                 −5.2636E−06 
               
               
                 A14 = 
                 4.7826E−09 
                 −4.9423E−09 
                 −5.0622E−08 
                 4.9142E−08 
                 1.5415E−07 
               
               
                 A16 = 
                 −1.9154E−10 
                 2.0235E−10 
                 9.7859E−11 
                 −4.0830E−10 
                 −6.6440E−10 
               
               
                   
               
            
           
           
               
               
            
               
                   
                 Surface # 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 7 
                 8 
                 9 
                 10 
                 11 
               
               
                   
               
               
                 k = 
                 −5.6125E+00 
                 −2.7161E+00 
                 −4.9386E+00 
                 −2.3172E+00 
                 −9.1376E−01 
               
               
                 A4 = 
                 −9.3734E−03 
                 −3.7064E−03 
                 2.5436E−03 
                 −2.0893E−02 
                 8.1160E−03 
               
               
                 A6 = 
                 2.8620E−03 
                 2.3848E−04 
                 2.9722E−03 
                 1.7072E−02 
                 3.9250E−04 
               
               
                 A8 = 
                 −2.8370E−04 
                 −4.0129E−05 
                 −1.8309E−03 
                 −6.4662E−03 
                 −1.4665E−04 
               
               
                 A10 = 
                 8.5416E−06 
                 −1.6591E−05 
                 3.7930E−04 
                 1.4417E−03 
                 1.6024E−04 
               
               
                 A12 = 
                 1.5802E−06 
                 2.9199E−06 
                 −3.0625E−05 
                 −1.8181E−04 
                 −6.4921E−05 
               
               
                 A14 = 
                 −2.0568E−07 
                 −3.2716E−08 
                 3.7897E−07 
                 1.2134E−05 
                 1.2488E−05 
               
               
                 A16 = 
                 7.0715E−09 
                 −1.1020E−08 
                 3.8741E−08 
                 −3.3740E−07 
                 −8.6998E−07 
               
               
                   
               
            
           
         
       
     
     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 9th embodiment, so an explanation in this regard will not be provided again. 
     Moreover, these parameters can be calculated from Table 19 and Table 20 as the following values and satisfy the following conditions: 
     
       
         
           
               
             
               
                   
               
               
                 10 th  Embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 f [mm] 
                 8.36 
                 R3/f2 
                 0.57 
               
               
                 Fno 
                 1.25 
                 f2/f1 
                 −0.85 
               
               
                 HFOV [deg.] 
                 14.7 
                 f4/R6 
                 6.17 
               
               
                 tan(HFOV) 
                 0.26 
                 Σ|f/fx| 
                 4.90 
               
               
                 Nmax 
                 1.639 
                 Rimg [mm] 
                 ∞ 
               
               
                 CT1/(CT2 + CT3) 
                 1.81 
                 SD11/SD52 
                 1.44 
               
               
                 T12/(T23 + T34 + T45) 
                 0.80 
               
               
                   
               
            
           
         
       
     
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. It is to be noted that TABLES 1-20 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.