Patent Publication Number: US-2023146576-A1

Title: Image capturing optical lens system

Description:
RELATED APPLICATIONS 
     The present application is a continuation of the application Ser. No. 17/140,149, filed Jan. 4, 2021, which is a continuation of the application Ser. No. 16/529,756, filed Aug. 1, 2019, U.S. Pat. No. 10,914,925 issued on Feb. 9, 2021, which is a continuation of the application Ser. No. 16/008,004, filed Jun. 13, 2018, U.S. Pat. No. 10,416,417 issued on Sep. 17, 2019, which is a continuation of the application Ser. No. 15/196,052, filed Jun. 29, 2016, U.S. Pat. No. 10,018,809 issued on Jul. 10, 2018, which is a continuation of the application Ser. No. 14/556,249, filed Dec. 1, 2014, U.S. Pat. No. 9,405,100 issued on Aug. 2, 2016, which is a continuation of the application Ser. No. 13/709,073, filed Dec. 10, 2012, U.S. Pat. No. 8,934,178 issued on Jan. 13, 2015, and claims priority to Taiwan Application Serial Number 101138920, filed Oct. 22, 2012, which are herein incorporated by references. 
    
    
     BACKGROUND 
     Technical Field 
     The present invention relates to an image capturing optical lens system. More particularly, the present invention relates to a compact image capturing optical lens system applicable to electronic products. 
     Description of Related Art 
     In recent years, with the popularity of mobile products with camera functionalities, the demand of optical lens systems is increasing. The sensor of a conventional optical lens system is typically a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor) sensor. As the advanced semiconductor manufacturing technologies have allowed the pixel size of sensors to be reduced and compact optical lens systems have gradually evolved toward the field of higher megapixels, there is an increasing demand for compact optical lens systems featuring better image quality. 
     A conventional compact optical lens system employed in a portable electronic product mainly adopts a four-element lens structure or a five-element lens structure such as the one disclosed in U.S. Pat. No. 7,869,142 and the one disclosed in U.S. Pat. No. 8,000,031. Due to the popularity of mobile products with high-end specifications, such as smart phones and PDAs (Personal Digital Assistants), the pixel and image-quality requirements of the compact optical lens system have increased rapidly. However, the conventional four-element lens structure or five-element lens structure cannot satisfy the requirements of the compact optical lens system. 
     Although there are optical lens systems with six-element lens structure, such as the one disclosed in U.S. Publication No. 2012/0229917. However, the fifth lens element of this optical lens system is not a meniscus with stronger curvature and the peripheral field of view can not be focused on the image plane; therefore, it is not favorable for resolving power and image quality. 
     SUMMARY 
     According to one aspect of the present disclosure, an image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof. The second lens element has negative refractive power. The third lens element has refractive power. The fourth lens element has refractive power, wherein at least one of an object-side surface and an image-side surface of the fourth lens element is aspheric. The fifth lens element with negative refractive power has an object-side surface being concave and an image-side surface being convex at a paraxial region thereof, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric. The sixth lens element with refractive power has an image-side surface, wherein the image-side surface of the sixth lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof, and an object-side surface and the image-side surface of the sixth lens element are aspheric. When a curvature radius of the object-side surface of the first lens element is R 1 , and a curvature radius of an image-side surface of the first lens element is R 2 , the following relationship is satisfied: 
       −3.0&lt;(R1+R2)/(R1−R2)&lt;0.
 
     According to another aspect of the present disclosure, an image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof. The second lens element with refractive power has an image-side surface being concave at a paraxial region thereof. The third lens element has refractive power. The fourth lens element with refractive power has an image-side surface being convex at a paraxial region thereof, wherein at least one of an object-side surface and the image-side surface of the fourth lens element is aspheric. The fifth lens element with negative refractive power has an object-side surface being concave and an image-side surface being convex at a paraxial region thereof, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric. The sixth lens element with refractive power has an image-side surface, wherein the image-side surface of the sixth lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof, and an object-side surface and the image-side surface of the sixth lens element are aspheric. When an Abbe number of the fifth lens element is V 5 , and an Abbe number of the sixth lens element is V 6 , the following relationship is satisfied: 
       0.20&lt;V5/V6&lt;0.70. 
     According to still another aspect of the present disclosure, an image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof. The second lens element with negative refractive  20  power has a concave image-side surface. The third lens element has refractive power. The fourth lens element has refractive power, wherein at least one of an object-side surface and an image-side surface of the fourth lens element is aspheric. The fifth lens element with negative refractive power has an object-side surface being concave and an image-side surface being convex at a paraxial region thereof, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric. The sixth lens element with refractive power has an image-side surface, wherein the image-side surface of the sixth lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof, and an object-side surface and the image-side surface of the sixth lens element are aspheric. When a focal length of the image capturing optical lens system is f, a focal length of the second lens element is f 2 , a focal length of the fifth lens element is f 5 , and a curvature radius of the image-side surface of the sixth lens element is R 12 , the following relationships are satisfied: 
       −1.50&lt;f/f5&lt;−0.20; and
 
       −1.0&lt;R12/f2&lt;0.
 
    
    
     
       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    is a schematic view of an image capturing optical lens system according to the 1st embodiment of the present disclosure; 
         FIG.  2    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 1st embodiment; 
         FIG.  3    is a schematic view of an image capturing optical lens system according to the 2nd embodiment of the present disclosure; 
         FIG.  4    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 2nd embodiment; 
         FIG.  5    is a schematic view of an image capturing optical lens system according to the 3rd embodiment of the present disclosure; 
         FIG.  6    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 3rd embodiment; 
         FIG.  7    is a schematic view of an image capturing optical lens system according to the 4th embodiment of the present disclosure; 
         FIG.  8    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 4th embodiment; 
         FIG.  9    is a schematic view of an image capturing optical lens system according to the 5th embodiment of the present disclosure; 
         FIG.  10    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 5th embodiment; 
         FIG.  11    is a schematic view of an image capturing optical lens system according to the 6th embodiment of the present disclosure; 
         FIG.  12    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 6th embodiment; 
         FIG.  13    is a schematic view of an image capturing optical lens system according to the 7th embodiment of the present disclosure; 
         FIG.  14    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 7th embodiment; 
         FIG.  15    is a schematic view of an image capturing optical lens system according to the 8th embodiment of the present disclosure; 
         FIG.  16    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 8th embodiment; 
         FIG.  17    is a schematic view of an image capturing optical lens system according to the 9th embodiment of the present disclosure; 
         FIG.  18    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 9th embodiment; 
         FIG.  19    is a schematic view of an image capturing optical lens system according to the 10th embodiment of the present disclosure; 
         FIG.  20    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 10th embodiment; 
         FIG.  21    is a schematic view of an image capturing optical lens system according to the 11th embodiment of the present disclosure; 
         FIG.  22    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 11th embodiment; and 
         FIG.  23    shows a of the sixth lens element of the image capturing lens system as illustrated in  FIG.  1   . 
     
    
    
     DETAILED DESCRIPTION 
     An image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The image capturing optical lens system can further include an image sensor located on an image plane. 
     The first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof, and can have an image-side surface being concave at a paraxial region thereof, so that the total track length of  10  the image capturing optical lens system can be reduced by adjusting the positive refractive power of the first lens element. 
     The second lens element has negative refractive power, so that the aberration generated from the first lens element can be corrected. The second lens element can have an object-side surface being convex at a paraxial region  15  thereof, and can have an image-side surface being concave at a paraxial region thereof, so that the astigmatism of the image capturing optical lens system can be corrected. 
     The fourth lens element can have positive refractive power, and can have an image-side surface being convex at a paraxial region thereof. Therefore, it is  20  favorable for reducing the system sensitivity to increase the manufacturing yield rate. 
     The fifth lens element with negative refractive power has an object-side surface being concave at a paraxial region thereof, and has an image-side surface being convex at a paraxial region thereof. Therefore, the Petzval sum of  25  the image capturing optical lens system can be corrected effectively, so that the peripheral field of view can be better focused on the image plane with higher resolving power. 
     The sixth lens element can have an object-side surface being convex at a paraxial region thereof and has an image-side surface being concave at a paraxial region thereof. Therefore, the principal point of the image capturing optical lens system can be positioned away from the image plane, and the back focal length thereof can be reduced so as to keep the image capturing optical lens system compact. Furthermore, the image-side surface of the sixth lens element changes from concave at the paraxial region thereof to convex at a  10  peripheral region thereof, so that the angle at which the incident light projects onto the image sensor from the off-axis field can be effectively reduced to increase the image-sensing efficiency of the image sensor, and the aberration of the off-axis field can be further corrected. 
     When a curvature radius of the object-side surface of the first lens element  15  is R 1 , and a curvature radius of the image-side surface of the first lens element is R 2 , the following relationship is satisfied: −3.0&lt;(R 1 +R 2 )/(R 1 -R 2 )&lt;0. Therefore, the curvatures of the surfaces of the first lens element are proper for correcting the spherical aberration and the astigmatism of the image capturing optical lens system thereof. The total track length of the image capturing optical lens system  20  can be reduced by adjusting the positive refractive power of the first lens element. 
     When a curvature radius of the object-side surface of the fifth lens element is R 9 , and a curvature radius of the image-side surface of the fifth lens element is R 10 , the following relationship is satisfied: −0.50&lt;(R 9 -R 10 )/(R 9 +R 10 )&lt;0. Therefore, the Petzval sum of the image capturing optical lens system can be effectively corrected by adjusting the curvatures of the surfaces of the fifth lens element, and the peripheral field of view can thereby be better focused on the image plane with higher resolving power. Preferably, the following relationship is satisfied: −0.35&lt;(R 9 -R 10 )/(R 9 +R 10 )&lt;0. 
     When an Abbe number of the fifth lens element is V 5 , and an Abbe number of the sixth lens element is V 6 , the following relationship is satisfied: 0.20&lt;V 5 /V 6 &lt;0.70. Therefore, the chromatic aberration of the image capturing optical lens system can be corrected. 
     When a focal length of the image capturing optical lens system is f, and a focal length of the fifth lens element is f 5 , the following relationship is satisfied: −1.50&lt;f/f 5 &lt;−0.20. Therefore, the Petzval sum of the image capturing optical lens system can be effectively corrected by adjusting the refractive power together with the curvatures of the surfaces of the fifth lens element, and the peripheral field of view can thereby be better focused on the image plane with higher resolving power. Preferably, the following relationship is satisfied: −1.20&lt;f/f 5 &lt;−0.20. 
     When a central thickness of the fifth lens element is CT 5 , and a central thickness of the sixth lens element is CT 6 , the following relationship is satisfied: 0.10&lt;CT 5 /CT 6 &lt;0.50. Therefore, the thicknesses of the lens elements are thereby favorable for manufacturing processes and yield rate; otherwise, the lens elements with an excessively thin thickness or an excessively thick thickness will be easily crackled or deformed during the manufacturing processes. 
     When the focal length of the image capturing optical lens system is f, and a focal length of the fourth lens element is f 4 , the following relationship is satisfied: 0.6&lt;f/f 4 &lt;1.8. Therefore, the distribution of the positive refractive power of the image capturing optical lens system can be balanced to correct the aberration by properly adjusting the refractive power of the fourth lens element. 
     When an axial distance between the image-side surface of the sixth lens element and the image plane is BFL, and an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is Td, the following relationship is satisfied: 0.15&lt;BFL/Td&lt;0.4. Therefore, it is favorable for keeping the image capturing optical lens system compact by adjusting the BFL of the image capturing optical lens system. 
     When an Abbe number of the first lens element is V 1 , an Abbe number of the second lens element is V 2 , and the Abbe number of the fifth lens element is V 5 , the following relationship is satisfied: 0.6&lt;(V 2 +V 5 )/V 1 &lt;1.0. Therefore, it is favorable for correcting the chromatic aberration of the image capturing optical lens system. 
     When a central thickness of the second lens element is CT 2 , and an angle between a tangent of an inflection point on the image-side surface of the sixth lens element and an optical axis is a, the following relationship is satisfied: 0 mm&lt;CT 2 /tan(α)&lt;0.30 mm. Therefore, it is favorable for effectively reducing the angle at which the incident light projects onto the image sensor from the off-axis field to improve the image-sensing efficiency of the image sensor. Moreover, it is also favorable for correcting the aberration of the off-axis field to better assemble and manufacture the lens elements by properly adjusting the surface shape of the image-side surface of the sixth lens element and the central thickness of the second lens element. Preferably, the following relationship is satisfied: 0 mm&lt;CT 2 /tan(α)&lt;0.15 mm. 
     When a maximum image height of the image capturing optical lens system is ImgH (half of a diagonal length of an effective photosensitive area of the image sensor), and the focal length of the image capturing optical lens system is f, the following relationship is satisfied: 0.72&lt;ImgH/f&lt;1.0. Therefore, it is favorable for keeping the image capturing optical lens system compact in order to be applied to the compact and portable electronic products. 
     When the focal length of the image capturing optical lens system is f, the focal length of the fourth lens element is f 4 , the focal length of the fifth lens element is f 5 , and a focal length of the sixth lens element is f 6 , the following relationship is satisfied: 0.3&lt;(|f/f 5 |+|f/f 6 |)/(f/f 4 )&lt;1.5. Therefore, it is favorable for reducing the sensitivity to increase the manufacturing yield rate by adjusting the refractive power of the fourth lens element, the fifth lens element and the sixth lens element. 
     When the maximum image height of the image capturing optical lens system is ImgH, and an axial distance between the object-side surface of the first lens element and the image plane is TTL, the following relationship is satisfied: TTL/ImgH&lt;1.8. Therefore, it is favorable for keeping the image capturing optical lens system compact in order to be applied to the compact and portable electronic products. 
     When a focal length of the second lens element is f 2 , and a curvature radius of the image-side surface of the sixth lens element is R 12 , the following relationship is satisfied: −1.0&lt;R 12 /f 2 &lt;0. Therefore, it is favorable for correcting the aberration, and the principal point of the image capturing optical lens system can be positioned away from the image plane for reducing the back focal length, so that the compact size of the image capturing optical lens system can be maintained. 
     According to the image capturing optical lens system of the present disclosure, the lens elements thereof can be made of plastic or glass material. When the lens elements are made of glass material, the distribution of the refractive power of the image capturing optical lens system may be more flexible to design. When the lens elements are made of plastic material, the manufacturing costs can be effectively reduced. Furthermore, the surfaces of each lens element can be aspheric, so that it is easier to make the surfaces into non-spherical shapes. As a result, more controllable variables are obtained, and the aberration is reduced, as well as the number of required lens elements can be reduced while constructing an optical system. Therefore, the total track length of the image capturing optical lens system can also be reduced. 
     According to the image capturing optical lens system of the present disclosure, each of the object-side surface and the image-side surface of every lens element has a paraxial region and a peripheral region. The paraxial region refers to the region of the surface where light rays travel close to an optical axis and the peripheral region refers to the region of the surface where light rays travel away from the optical axis. 
     According to the image capturing optical lens system of the present disclosure, the image capturing optical lens system can include at least one stop, such as an aperture stop, a glare stop, or a field stop, etc. Said glare stop or said field stop is allocated for reducing stray light while retaining high image quality. Furthermore, an aperture stop can be configured as a front stop or a middle stop. A front stop disposed between an object and the first lens element provides a longer distance from an exit pupil of the system to the image plane and thereby the generated telecentric effect improves the image-sensing efficiency of the image sensor. A middle stop disposed between the first lens element and the image plane is favorable for enlarging the field of view of the image capturing optical lens system and thereby provides a wider field of view for the same. 
     According to the image capturing optical lens system of the present disclosure, the image capturing optical lens system is featured with good correcting ability and high image quality, and can be applied to 3D (three-dimensional) image capturing applications, in products such as digital cameras, mobile devices and tablets. 
     According to the above description of the present disclosure, the following 1st-11th specific embodiments are provided for further explanation. 
     1st Embodiment 
       FIG.  1    is a schematic view of an image capturing optical lens system 15 according to the 1st embodiment of the present disclosure.  FIG.  2    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 1st embodiment. In  FIG.  1   , the image capturing optical lens system includes, in order from an object side to an image side, an aperture stop  100 , a first lens element  110 , a second lens element  120 , a third lens element  130 , a fourth lens element  140 , a fifth lens element  150 , a sixth lens element  160 , an IR-cut filter  180 , an image plane  170 , and an image sensor  190 . 
     The first lens element  110  with positive refractive power has an object-side surface  111  being convex at a paraxial region thereof and an image-side surface  112  being concave at a paraxial region thereof. The first lens element  110  is made of plastic material and has the object-side surface  111  and the image-side surface  112  being both aspheric. 
     The second lens element  120  with negative refractive power has an object-side surface  121  being convex at a paraxial region thereof and an image-side surface  122  being concave at a paraxial region thereof. The second lens element  120  is made of plastic material and has the object-side surface  121  and the image-side surface  122  being both aspheric. 
     The third lens element  130  with negative refractive power has an object-side surface  131  being convex at a paraxial region thereof and an image-side surface  132  being concave at a paraxial region thereof. The third lens element  130  is made of plastic material and has the object-side surface  131  and the image-side surface  132  being both aspheric. 
     The fourth lens element  140  with positive refractive power has an object-side surface  141  being concave at a paraxial region thereof and an image-side surface  142  being convex at a paraxial region thereof. The fourth lens element  140  is made of plastic material and has the object-side surface  141  and the image-side surface  142  being both aspheric. 
     The fifth lens element  150  with negative refractive power has an object-side surface  151  being concave at a paraxial region thereof and an image-side surface  152  being convex at a paraxial region thereof. The fifth lens element  150  is made of plastic material and has the object-side surface  151  and the image-side surface  152  being both aspheric. 
     The sixth lens element  160  with positive refractive power has an object-side surface  161  being convex at a paraxial region thereof and an image-side surface  162  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  160  is made of plastic material and has the object-side surface  161  and the image-side surface  162  being both aspheric. 
     The IR-cut filter  180  made of glass material is located between the sixth lens element  160  and the image plane  170 , and will not affect a focal length of the image capturing optical lens system. 
     The equation of the aspheric surface profiles of the aforementioned lens elements of the  1 st embodiment is expressed as follows: 
     
       
         
           
             
               
                 X 
                 ⁡ 
                 ( 
                 Y 
                 ) 
               
               = 
               
                 
                   
                     ( 
                     
                       
                         Y 
                         2 
                       
                       / 
                       R 
                     
                     ) 
                   
                   / 
                   
                     ( 
                     
                       1 
                       + 
                       
                         sqrt 
                         ⁡ 
                         ( 
                         
                           1 
                           - 
                           
                             
                               ( 
                               
                                 1 
                                 + 
                                 k 
                               
                               ) 
                             
                             × 
                             
                               
                                 ( 
                                 
                                   Y 
                                   / 
                                   R 
                                 
                                 ) 
                               
                               2 
                             
                           
                         
                         ) 
                       
                     
                     ) 
                   
                 
                 + 
                 
                   
                     ∑ 
                     i 
                   
                   
                     
                       ( 
                       Ai 
                       ) 
                     
                     × 
                     
                       ( 
                       
                         Y 
                         i 
                       
                       ) 
                     
                   
                 
               
             
             , 
           
         
       
     
     wherein, 
     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 distance from the point on the curve of the aspheric surface to the optical axis; 
     R is the curvature radius; 
     k is the conic coefficient; and 
     Ai is the i-th aspheric coefficient. 
     In the image capturing optical lens system according to the 1st embodiment, when a focal length of the image capturing optical lens system is f, an f-number of the image capturing optical lens system is Fno, and half of a maximal field of view of the image capturing optical lens system is HFOV, these parameters have the following values: 
     f=4.14 mm; 
     Fno=2.20; and 
     HFOV=35.4 degrees. 
     In the image capturing optical lens system according to the 1st embodiment, when an Abbe number of the first lens element  110  is V 1 , an Abbe number of the second lens element  120  is V 2 , an Abbe number of the fifth lens element  150  is V 5 , and an Abbe number of the sixth lens element  160  is V 6 , the following relationships are satisfied: 
       (V2+V5)/V1=0.83; and 
       V5/V6=0.417. 
     In the image capturing optical lens system according to the 1st embodiment, when a central thickness of the fifth lens element  150  is CT 5 , and a central thickness of the sixth lens element  160  is CT 6 , the following relationship is satisfied: 
       CT5/CT6=0.24. 
     In the image capturing optical lens system according to the 1st embodiment, when a curvature radius of the object-side surface  111  of the first lens element  110  is R 1 , and a curvature radius of the image-side surface  112  of the first lens element  110  is R 2 , the following relationship is satisfied: 
       (R1+R2)/(R1−R2)=−1.07.
 
     In the image capturing optical lens system according to the 1st embodiment, when a curvature radius of the object-side surface  151  of the fifth lens element  150  is R 9 , and a curvature radius of the image-side surface  152  of the fifth lens element  150  is R 10 , the following relationship is satisfied: 
       (R9−R10)/(R9+R10)=−0.17.
 
     In the image capturing optical lens system according to the 1st embodiment, when a focal length of the second lens element  120  is f 2 , and a curvature radius of the image-side surface  162  of the sixth lens element  160  is R 12 , the following relationship is satisfied: 
       R12/f2=−0.31.
 
     In the image capturing optical lens system according to the 1st embodiment, when the focal length of the image capturing optical lens system is f, a focal length of the fourth lens element  140  is f 4 , a focal length of the fifth lens element  150  is f 5 , and a focal length of the sixth lens element  160  is f 6 , the to following relationships are satisfied: 
       f/f4=0.89; 
       f/f5=−0.61; and
 
       (|f/f5|+|f/f6|)/(f/f4)=0.73. 
       FIG.  23    shows a of the sixth lens element  160  of the image capturing lens system as illustrated in  FIG.  1   . In  FIG.  23   , when an angle between a tangent of an inflection point on an image-side surface  162  of a sixth lens element  160  and an optical axis is a, and a central thickness of the second lens element  120  is CT 2 , the following relationship is satisfied: 
       CT2/tan(α)=0.05 mm.
 
     In the image capturing optical lens system according to the 1st embodiment, when an axial distance between the image-side surface  162  of the sixth lens element  160  and the image plane  170  is BFL, and an axial distance between the object-side surface  111  of the first lens element  110  and the image-side surface  162  of the sixth lens element  160  is Td, the following relationship is satisfied: 
       BFL/Td=0.29. 
     In the image capturing optical lens system according to the 1st embodiment, when a maximum image height of the image capturing optical lens system is ImgH which here is a half of the diagonal length of the photosensitive area of the image sensor  190  on the image plane  170 , the focal length of the image capturing optical lens system is f, and an axial distance between the object-side surface  111  of the first lens element  110  and the image plane  170  is TTL, the following relationships are satisfied: 
       ImgH/f=0.724; and TTL/ImgH=1.70. 
     The detailed optical data of the 1st embodiment are shown in Table 1, and the aspheric surface data are shown in Table 2 below. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 1st Embodiment 
               
               
                 f = 4.14 mm, Fno = 2.20, HFOV = 35.4 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.283  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.688 
                 (ASP) 
                 0.523 
                 Plastic 
                 1.544 
                 55.9 
                 3.20 
               
               
                 3 
                   
                 47.745 
                 (ASP) 
                 0.036 
               
               
                 4 
                 Lens 2 
                 3.044 
                 (ASP) 
                 0.240 
                 Plastic 
                 1.640 
                 23.3 
                 −6.34 
               
               
                 5 
                   
                 1.685 
                 (ASP) 
                 0.380 
               
               
                 6 
                 Lens 3 
                 7.907 
                 (ASP) 
                 0.274 
                 Plastic 
                 1.544 
                 55.9 
                 −25.07 
               
               
                 7 
                   
                 4.945 
                 (ASP) 
                 0.186 
               
               
                 8 
                 Lens 4 
                 −205.400 
                 (ASP) 
                 0.360 
                 Plastic 
                 1.544 
                 55.9 
                 4.64 
               
               
                 9 
                   
                 −2.494 
                 (ASP) 
                 0.347 
               
               
                 10 
                 Lens 5 
                 −0.818 
                 (ASP) 
                 0.300 
                 Plastic 
                 1.640 
                 23.3 
                 −6.84 
               
               
                 11 
                   
                 −1.150 
                 (ASP) 
                 0.072 
               
               
                 12 
                 Lens 6 
                 2.293 
                 (ASP) 
                 1.229 
                 Plastic 
                 1.544 
                 55.9 
                 95.61 
               
               
                 13 
                   
                 1.946 
                 (ASP) 
                 0.500 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.449 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                  1.8655E−01 
                  5.0000E+00 
                 −2.0784E+01 
                 −5.0621E+00  
                  0.0000E+00 
                  0.0000E+00 
               
               
                 A4 = 
                 −6.1899E−04 
                 −4.5527E−02 
                 −7.1197E−02 
                 2.5381E−03 
                 −7.0538E−02 
                 −7.8575E−02 
               
               
                 A6 = 
                  2.8358E−02 
                  1.2620E−01 
                  1.2670E−01 
                 4.2100E−02 
                 −4.2775E−02 
                 −1.0851E−02 
               
               
                 A8 = 
                 −5.0099E−02 
                 −1.0849E−01 
                 −3.6051E−02 
                 9.4901E−02 
                  6.0982E−02 
                 −2.6489E−02 
               
               
                 A10 = 
                 −3.4127E−03 
                 −1.1151E−02 
                 −1.2216E−01 
                 −2.2870E−01  
                 −4.2446E−02 
                  1.4271E−03 
               
               
                 A12 = 
                  9.9599E−02 
                  4.2875E−02 
                  4.4865E−02 
                 1.5329E−01 
                 −4.0004E−11 
                 −2.6097E−10 
               
               
                 A14 = 
                 −7.7512E−02 
                 −3.6527E−02 
                  1.5158E−02 
                 −2.4257E−02  
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −4.0000E+01 
                  1.6416E+00 
                 −3.7855E+00 
                 −8.1718E−01 
                 −3.1624E+01 
                 −9.1133E+00 
               
               
                 A4 = 
                 −9.7160E−02 
                 −4.3991E−02 
                 −4.9566E−02 
                  1.3509E−01 
                 −1.2831E−01 
                 −5.1858E−02 
               
               
                 A6 = 
                 −5.6079E−03 
                 −1.7664E−02 
                 −1.4184E−02 
                 −3.7856E−02 
                  7.0118E−02 
                  2.0398E−02 
               
               
                 A8 = 
                  6.6760E−03 
                  2.7241E−02 
                  1.2088E−01 
                  1.7679E−02 
                 −4.1873E−02 
                 −8.2739E−03 
               
               
                 A10 = 
                 −3.6560E−02 
                  3.6468E−02 
                 −5.2829E−02 
                  8.4334E−03 
                  2.0999E−02 
                  2.2506E−03 
               
               
                 A12 = 
                 −8.1389E−03 
                 −3.5812E−03 
                 −1.0632E−02 
                 −3.2045E−03 
                 −5.8979E−03 
                 −3.8544E−04 
               
               
                 A14 = 
                  9.1601E−02 
                 −6.5876E−03 
                  4.8246E−03 
                 −2.5396E−03 
                  8.2208E−04 
                  3.6567E−05 
               
               
                 A16 = 
                 −4.8470E−02 
                 — 
                  4.0110E−04 
                  8.1636E−04 
                 −4.4862E−05 
                 −1.4339E−06 
               
               
                   
               
            
           
         
       
     
     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. A 1 -A 16  represent the aspheric coefficients ranging from the 1st order to the 16th order. This information related to Table 1 and Table 2 applies also to the Tables for the remaining embodiments, and so an explanation in this regard will not be provided again. 
     2nd Embodiment 
       FIG.  3    is a schematic view of an image capturing optical lens system according to the 2nd embodiment of the present disclosure.  FIG.  4    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 2nd embodiment. In  FIG.  3   , the image capturing optical lens system includes, in order from an object side to an image side, a first lens element  210 , an aperture stop  200 , a second lens element  220 , a third lens element  230 , a fourth lens element  240 , a fifth lens element  250 , a sixth lens element  260 , an IR-cut filter  280 , an image plane  270 , and an image sensor  290 . 
     The first lens element  210  with positive refractive power has an object-side surface  211  being convex at a paraxial region thereof and an image-side surface  212  being concave at a paraxial region thereof. The first lens element  210  is made of plastic material and has the object-side surface  211  and the image-side surface  212  being both aspheric. 
     The second lens element  220  with negative refractive power has an object-side surface  221  being convex at a paraxial region thereof and an image-side surface  222  being concave at a paraxial region thereof. The second lens element  220  is made of plastic material and has the object-side surface  221  and the image-side surface  222  being both aspheric. 
     The third lens element  230  with negative refractive power has an object-side surface  231  being convex at a paraxial region thereof and an image-side surface  232  being concave at a paraxial region thereof. The third lens element  230  is made of plastic material and has the object-side surface  231  and the image-side surface  232  being both aspheric. 
     The fourth lens element  240  with positive refractive power has an object-side surface  241  being convex at a paraxial region thereof and an image-side surface  242  being convex at a paraxial region thereof. The fourth lens element  240  is made of plastic material and has the object-side surface  241  and the image-side surface  242  being both aspheric. 
     The fifth lens element  250  with negative refractive power has an object-side surface  251  being concave at a paraxial region thereof and an image-side surface  252  being convex at a paraxial region thereof. The fifth lens element  250  is made of plastic material and has the object-side surface  251  and the image-side surface  252  being both aspheric. 
     The sixth lens element  260  with positive refractive power has an object-side surface  261  being convex at a paraxial region thereof and an image-side surface  262  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  260  is made of plastic material and has the object-side surface  261  and the image-side surface  262  being both aspheric. 
     The IR-cut filter  280  made of glass material is located between the sixth lens element  260  and the image plane  270 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 2nd embodiment are shown in Table 3, and the aspheric surface data are shown in Table 4 below. 
     
       
         
           
               
             
               
                 TABLE 3 
               
             
            
               
                   
               
               
                 2nd Embodiment 
               
               
                 f = 3.64 mm, Fno = 2.00, HFOV = 39.0 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 2.153 
                 (ASP) 
                 0.458 
                 Plastic 
                 1.572 
                 58.7 
                 3.79 
               
               
                 2 
                   
                 335.570 
                 (ASP) 
                 0.012 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.016 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 4 
                 Lens 2 
                 2.155 
                 (ASP) 
                 0.240 
                 Plastic 
                 1.634 
                 23.8 
                 −7.49 
               
               
                 5 
                   
                 1.418 
                 (ASP) 
                 0.337 
               
               
                 6 
                 Lens 3 
                 5.467 
                 (ASP) 
                 0.329 
                 Plastic 
                 1.544 
                 55.9 
                 −19.12 
               
               
                 7 
                   
                 3.508 
                 (ASP) 
                 0.105 
               
               
                 8 
                 Lens 4 
                 10.749 
                 (ASP) 
                 0.491 
                 Plastic 
                 1.544 
                 55.9 
                 3.07 
               
               
                 9 
                   
                 −1.949 
                 (ASP) 
                 0.300 
               
               
                 10 
                 Lens 5 
                 −0.760 
                 (ASP) 
                 0.285 
                 Plastic 
                 1.634 
                 23.8 
                 −4.25 
               
               
                 11 
                   
                 −1.214 
                 (ASP) 
                 0.084 
               
               
                 12 
                 Lens 6 
                 1.725 
                 (ASP) 
                 1.268 
                 Plastic 
                 1.535 
                 56.3 
                 12.39 
               
               
                 13 
                   
                 1.736 
                 (ASP) 
                 0.500 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.200 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.395 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 4 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 2.4457E−01 
                 −2.0000E+01 
                 −1.3449E+01 
                 −4.3098E+00 
                 −1.4316E+01 
                 −1.0637E+01 
               
               
                 A4 = 
                 −3.5922E−03  
                 −3.0418E−02 
                 −2.7734E−02 
                 −2.1105E−02 
                 −7.5590E−02 
                 −7.4219E−02 
               
               
                 A6 = 
                 3.8748E−02 
                  1.2918E−01 
                  6.5777E−02 
                  3.8720E−02 
                 −4.3505E−02 
                  4.1101E−02 
               
               
                 A8 = 
                 −7.2214E−02  
                 −1.6441E−01 
                 −1.2333E−02 
                  7.6934E−02 
                  3.6620E−02 
                 −8.3615E−02 
               
               
                 A10 = 
                 4.6314E−03 
                  2.8122E−02 
                 −1.4011E−01 
                 −2.2788E−01 
                  1.3003E−02 
                  1.1203E−02 
               
               
                 A12 = 
                 9.9599E−02 
                  4.2875E−02 
                  4.4865E−02 
                  1.5329E−01 
                 −5.9070E−11 
                  1.5762E−03 
               
               
                 A14 = 
                 −7.7512E−02  
                 −3.6527E−02 
                  1.5158E−02 
                 −2.4257E−02 
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −2.0000E+01 
                 1.0656E+00 
                 −3.7586E+00 
                 −8.4885E−01 
                 −2.0000E+01 
                 −6.7333E+00 
               
               
                 A4 = 
                 −8.1612E−02 
                 −2.9725E−02  
                 −4.8386E−02 
                  1.3364E−01 
                 −1.2827E−01 
                 −4.9930E−02 
               
               
                 A6 = 
                  3.7678E−02 
                 −1.3289E−03  
                 −2.1777E−02 
                 −2.9464E−02 
                  7.0279E−02 
                  2.0733E−02 
               
               
                 A8 = 
                  2.9213E−02 
                 2.3233E−02 
                  1.2848E−01 
                  1.5336E−02 
                 −4.1651E−02 
                 −8.2814E−03 
               
               
                 A10 = 
                 −7.4599E−02 
                 3.7969E−02 
                 −5.0342E−02 
                  7.8336E−03 
                  2.0986E−02 
                  2.2581E−03 
               
               
                 A12 = 
                 −4.2027E−02 
                 1.7118E−03 
                 −1.2548E−02 
                 −3.0509E−03 
                 −5.9073E−03 
                 −3.8625E−04 
               
               
                 A14 = 
                  1.1763E−01 
                 −6.0820E−03  
                  4.0294E−03 
                 −2.4660E−03 
                  8.2073E−04 
                  3.6257E−05 
               
               
                 A16 = 
                 −4.8470E−02 
                 — 
                  1.3739E−03 
                  7.9323E−04 
                 −4.4360E−05 
                 −1.3893E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 2nd embodiment, 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. Moreover, these parameters can be calculated from Table 3 and Table 4 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.64 
                 R12/f2 
                 −0.23 
               
               
                 Fno 
                 2.00 
                 f/f4 
                 1.18 
               
               
                 HFOV (deg.) 
                 39.0 
                 f/f5 
                 0.86 
               
               
                 (V2 + V5)/V1 
                 0.81 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 0.97 
               
               
                 V5/V6 
                 0.423 
                 CT2/tan(α) (mm) 
                 0.06 
               
               
                 CT5/CT6 
                 0.22 
                 BFL/Td 
                 0.26 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.01 
                 ImgH/f 
                 0.824 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.23 
                 TTL/ImgH 
                 1.65 
               
               
                   
               
            
           
         
       
     
     3rd Embodiment 
       FIG.  5    is a schematic view of an image capturing optical lens system according to the 3rd embodiment of the present disclosure.  FIG.  6    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 3rd embodiment. In  FIG.  5   , the image capturing optical lens 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 , a sixth lens element  360 , an IR-cut filter  380 , an image plane  370 , and an image sensor  390 . 
     The first lens element  310  with positive refractive power has an object-side surface  311  being convex at a paraxial region thereof and an image-side surface  312  being convex at a paraxial region thereof. The first lens element  310  is made of plastic material and has the object-side surface  311  and the image-side surface  312  being both aspheric. 
     The second lens element  320  with negative refractive power has an object-side surface  321  being convex at a paraxial region thereof and an image-side surface  322  being concave at a paraxial region thereof. The second lens element  320  is made of plastic material and has the object-side surface  321  and the image-side surface  322  being both aspheric. 
     The third lens element  330  with negative refractive power has an object-side surface  331  being convex at a paraxial region thereof and an image-side surface  332  being concave at a paraxial region thereof. The third lens element  330  is made of plastic material and has the object-side surface  331  and the image-side surface  332  being both aspheric. 
     The fourth lens element  340  with positive refractive power has an object-side surface  341  being convex at a paraxial region thereof and an image-side surface  342  being convex at a paraxial region thereof. The fourth lens element  340  is made of plastic material and has the object-side surface  341  and the image-side surface  342  being both aspheric. 
     The fifth lens element  350  with negative refractive power has an object-side surface  351  being concave at a paraxial region thereof and an image-side surface  352  being convex at a paraxial region thereof. The fifth lens element  350  is made of plastic material and has the object-side surface  351  and the image-side surface  352  being both aspheric. 
     The sixth lens element  360  with positive refractive power has an object-side surface  361  being convex at a paraxial region thereof and an image-side surface  362  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  360  is made of plastic material and has the object-side surface  361  and the image-side surface  362  being both aspheric. 
     The IR-cut filter  380  made of glass material is located between the sixth lens element  360  and the image plane  370 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 3rd embodiment are shown in Table 5, and the aspheric surface data are shown in Table 6 below. 
     
       
         
           
               
             
               
                 TABLE 5 
               
             
            
               
                   
               
               
                 3rd Embodiment 
               
               
                 f = 4.20 mm, Fno = 2.07, HFOV = 37.6 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.217  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 2.370 
                 (ASP) 
                 0.483 
                 Plastic 
                 1.543 
                 56.5 
                 3.96 
               
               
                 3 
                   
                 −21.803 
                 (ASP) 
                 0.050 
               
               
                 4 
                 Lens 2 
                 2.747 
                 (ASP) 
                 0.240 
                 Plastic 
                 1.650 
                 21.4 
                 −7.65 
               
               
                 5 
                   
                 1.708 
                 (ASP) 
                 0.338 
               
               
                 6 
                 Lens 3 
                 8.160 
                 (ASP) 
                 0.461 
                 Plastic 
                 1.543 
                 56.5 
                 −39.26 
               
               
                 7 
                   
                 5.785 
                 (ASP) 
                 0.197 
               
               
                 8 
                 Lens 4 
                 305.985 
                 (ASP) 
                 0.456 
                 Plastic 
                 1.543 
                 56.5 
                 4.22 
               
               
                 9 
                   
                 −2.310 
                 (ASP) 
                 0.386 
               
               
                 10 
                 Lens 5 
                 −0.914 
                 (ASP) 
                 0.285 
                 Plastic 
                 1.640 
                 23.3 
                 −7.70 
               
               
                 11 
                   
                 −1.258 
                 (ASP) 
                 0.192 
               
               
                 12 
                 Lens 6 
                 1.715 
                 (ASP) 
                 0.900 
                 Plastic 
                 1.543 
                 56.5 
                 135.54 
               
               
                 13 
                   
                 1.431 
                 (ASP) 
                 0.800 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.400 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 6 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 2.5381E−01 
                 −2.0000E+01 
                 −1.9708E+01 
                 −5.5454E+00 
                  2.8590E+00 
                 −1.2693E+01 
               
               
                 A4 = 
                 −4.3261E−04  
                 −3.7924E−04 
                 −1.8028E−02 
                 −3.3774E−02 
                 −5.5935E−02 
                 −6.6442E−02 
               
               
                 A6 = 
                 1.0703E−02 
                  6.4702E−02 
                  2.8578E−02 
                  1.8018E−02 
                 −1.9881E−02 
                  1.9509E−02 
               
               
                 A8 = 
                 −1.6978E−02  
                 −8.8112E−02 
                 −1.8991E−02 
                  3.8009E−02 
                  1.5339E−02 
                 −4.5863E−02 
               
               
                 A10 = 
                 7.9623E−05 
                  3.3050E−02 
                 −3.9010E−02 
                 −9.9688E−02 
                  5.6330E−03 
                  6.6107E−03 
               
               
                 A12 = 
                 2.8188E−02 
                  6.1037E−03 
                  1.7352E−02 
                  5.4569E−02 
                 −6.2692E−04 
                  4.0076E−03 
               
               
                 A14 = 
                 −2.1606E−02  
                 −1.5862E−02 
                 −8.7443E−03 
                 −8.0099E−03 
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −2.0000E+01 
                 1.1076E+00 
                 −3.7451E+00 
                 −7.8937E−01 
                 −1.2153E+01 
                 −5.8456E+00 
               
               
                 A4 = 
                 −7.6005E−02 
                 −3.0540E−02  
                 −3.9649E−02 
                  1.0498E−01 
                 −1.1171E−01 
                 −5.3577E−02 
               
               
                 A6 = 
                 −3.8014E−03 
                 −5.8796E−03  
                 −1.5555E−02 
                 −1.9811E−02 
                  4.2713E−02 
                  1.5409E−02 
               
               
                 A8 = 
                  1.2471E−02 
                 8.1726E−03 
                  6.4762E−02 
                  8.4971E−03 
                 −2.1124E−02 
                 −4.5079E−03 
               
               
                 A10 = 
                 −2.7696E−02 
                 1.4417E−02 
                 −2.1115E−02 
                  3.4516E−03 
                  8.9390E−03 
                  9.5885E−04 
               
               
                 A12 = 
                 −1.1912E−02 
                 7.0797E−04 
                 −4.0215E−03 
                 −1.0628E−03 
                 −2.0697E−03 
                 −1.3318E−04 
               
               
                 A14 = 
                  3.4966E−02 
                 −9.5575E−04  
                  1.2756E−03 
                 −7.0899E−04 
                  2.3709E−04 
                  1.0479E−05 
               
               
                 A16 = 
                 −1.2080E−02 
                 — 
                  2.4717E−04 
                  1.8710E−04 
                 −1.0734E−05 
                 −3.5225E−07 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 3rd embodiment, 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. Moreover, these parameters can be calculated from Table 5 and Table 6 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 4.20 
                 R12/f2 
                 −0.19 
               
               
                 Fno 
                 2.07 
                 f/f4 
                 1.00 
               
               
                 HFOV (deg.) 
                 37.6 
                 f/f5 
                 −0.55 
               
               
                 (V2 + V5)/V1 
                 0.79 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 0.58 
               
               
                 V5/V6 
                 0.412 
                 CT2/tan(α) (mm) 
                 0.07 
               
               
                 CT5/CT6 
                 0.32 
                 BFL/Td 
                 0.35 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −0.80 
                 ImgH/f 
                 0.785 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.16 
                 TTL/ImgH 
                 1.63 
               
               
                   
               
            
           
         
       
     
     4th Embodiment 
       FIG.  7    is a schematic view of an image capturing optical lens system according to the 4th embodiment of the present disclosure.  FIG.  8    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 4th embodiment. In  FIG.  7   , the image capturing optical lens system includes, in order from an object side to an image side, an aperture stop  400 , a first lens element  410 , a second lens element  420 , a third lens element  430 , a fourth lens element  440 , a fifth lens element  450 , a sixth lens element  460 , an IR-cut filter  480 , an image plane  470 , and an image sensor  490 . 
     The first lens element  410  with positive refractive power has an object-side surface  411  being convex at a paraxial region thereof and an image-side surface  412  being concave at a paraxial region thereof. The first lens element  410  is made of plastic material and has the object-side surface  411  and the image-side surface  412  being both aspheric. 
     The second lens element  420  with negative refractive power has an object-side surface  421  being convex at a paraxial region thereof and an image-side surface  422  being concave at a paraxial region thereof. The second lens element  420  is made of plastic material and has the object-side surface  421  and the image-side surface  422  being both aspheric. 
     The third lens element  430  with positive refractive power has an object-side surface  431  being convex at a paraxial region thereof and an image-side surface  432  being concave at a paraxial region thereof. The third lens element  430  is made of plastic material and has the object-side surface  431  and the image-side surface  432  being both aspheric. 
     The fourth lens element  440  with positive refractive power has an object-side surface  441  being concave at a paraxial region thereof and an image-side surface  442  being convex at a paraxial region thereof. The fourth lens element  440  is made of plastic material and has the object-side surface  441  and the image-side surface  442  being both aspheric. 
     The fifth lens element  450  with negative refractive power has an object-side surface  451  being concave at a paraxial region thereof and an image-side surface  452  being convex at a paraxial region thereof. The fifth lens element  450  is made of plastic material and has the object-side surface  451  and the image-side surface  452  being both aspheric. 
     The sixth lens element  460  with negative refractive power has an object-side surface  461  being convex at a paraxial region thereof and an image-side surface  462  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  460  is made of plastic material and has the object-side surface  461  and the image-side surface  462  being both aspheric. 
     The IR-cut filter  480  made of glass material is located between the sixth lens element  460  and the image plane  470 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 4th embodiment are shown in Table 7, and the aspheric surface data are shown in Table 8 below. 
     
       
         
           
               
             
               
                 TABLE 7 
               
             
            
               
                   
               
               
                 4th Embodiment 
               
               
                 f = 3.52 mm, Fno = 2.15, HFOV = 39.0 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.240  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.526 
                 (ASP) 
                 0.434 
                 Plastic 
                 1.544 
                 55.9 
                 3.78 
               
               
                 3 
                   
                 5.319 
                 (ASP) 
                 0.031 
               
               
                 4 
                 Lens 2 
                 3.101 
                 (ASP) 
                 0.220 
                 Plastic 
                 1.640 
                 23.3 
                 −6.73 
               
               
                 5 
                   
                 1.753 
                 (ASP) 
                 0.267 
               
               
                 6 
                 Lens 3 
                 3.404 
                 (ASP) 
                 0.428 
                 Plastic 
                 1.535 
                 56.3 
                 17.00 
               
               
                 7 
                   
                 5.205 
                 (ASP) 
                 0.230 
               
               
                 8 
                 Lens 4 
                 −27.849 
                 (ASP) 
                 0.466 
                 Plastic 
                 1.535 
                 56.3 
                 3.47 
               
               
                 9 
                   
                 −1.749 
                 (ASP) 
                 0.251 
               
               
                 10 
                 Lens 5 
                 −0.973 
                 (ASP) 
                 0.260 
                 Plastic 
                 1.640 
                 23.3 
                 −12.30 
               
               
                 11 
                   
                 −1.226 
                 (ASP) 
                 0.328 
               
               
                 12 
                 Lens 6 
                 1.860 
                 (ASP) 
                 0.628 
                 Plastic 
                 1.544 
                 55.9 
                 −5.21 
               
               
                 13 
                   
                 0.990 
                 (ASP) 
                 0.500 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.150 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.303 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 8 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 2.7915E−01 
                 −2.4936E+01 
                 −2.7594E+01 
                 −5.8473E+00  
                 −9.8578E+00 
                 −2.1118E+00 
               
               
                 A4 = 
                 2.4313E−04 
                 −3.9606E−02 
                 −5.3828E−02 
                 1.8334E−02 
                 −7.0035E−02 
                 −9.1836E−02 
               
               
                 A6 = 
                 3.1291E−02 
                  1.5890E−01 
                  1.6355E−01 
                 1.1594E−01 
                  2.1129E−02 
                 −3.2061E−04 
               
               
                 A8 = 
                 −5.6249E−02  
                 −1.7755E−01 
                 −1.2411E−01 
                 4.0035E−02 
                 −2.9000E−02 
                 −8.2744E−02 
               
               
                 A10 = 
                 −7.1236E−03  
                 −4.4157E−02 
                 −1.8261E−01 
                 −2.8123E−01  
                  1.9761E−02 
                  2.5430E−02 
               
               
                 A12 = 
                 1.7068E−01 
                  7.5059E−02 
                  7.6292E−02 
                 2.6344E−01 
                 −2.5108E−05 
                  5.1347E−06 
               
               
                 A14 = 
                 −1.4769E−01  
                 −6.9236E−02 
                  2.7542E−02 
                 −4.5915E−02  
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −1.0000E+00 
                  5.1039E−01 
                 −4.1329E+00 
                 −7.0200E−01 
                 −2.6121E+01 
                 −6.4224E+00 
               
               
                 A4 = 
                 −1.0058E−01 
                 −2.9673E−02 
                 −9.2923E−02 
                  1.4126E−01 
                 −1.8872E−01 
                 −7.1095E−02 
               
               
                 A6 = 
                 −1.9692E−02 
                 −2.4332E−02 
                 −3.4662E−02 
                 −5.1905E−02 
                  9.2722E−02 
                  2.9091E−02 
               
               
                 A8 = 
                  1.7002E−02 
                  2.1407E−02 
                  1.7437E−01 
                  1.9044E−02 
                 −5.8075E−02 
                 −1.1727E−02 
               
               
                 A10 = 
                 −9.5874E−02 
                  5.2055E−02 
                 −7.6455E−02 
                  1.3553E−02 
                  3.2738E−02 
                  3.4867E−03 
               
               
                 A12 = 
                 −3.2940E−02 
                 −4.6551E−03 
                 −1.4777E−02 
                 −4.4324E−03 
                 −1.0149E−02 
                 −6.6684E−04 
               
               
                 A14 = 
                  2.0100E−01 
                 −1.0881E−02 
                  9.5556E−03 
                 −4.5447E−03 
                  1.5541E−03 
                  6.9187E−05 
               
               
                 A16 = 
                 −1.0135E−01 
                 — 
                 −1.7410E−03 
                  1.5160E−03 
                 −9.3289E−05 
                 −2.8417E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 4th embodiment, the definitions of these parameters shown in the following table are 5 the same as those stated in the 1st embodiment with corresponding values for the 4th embodiment. Moreover, these parameters can be calculated from Table 7 and Table 8 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.52 
                 R12/f2 
                 −0.15 
               
               
                 Fno 
                 2.15 
                 f/f4 
                 1.02 
               
               
                 HFOV (deg.) 
                 39.0 
                 f/f5 
                 −0.29 
               
               
                 (V2 + V5)/V1 
                 0.83 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 0.95 
               
               
                 V5/V6 
                 0.417 
                 CT2/tan(α) (mm) 
                 0.07 
               
               
                 CT5/CT6 
                 0.41 
                 BFL/Td 
                 0.25 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.80 
                 ImgH/f 
                 0.810 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.12 
                 TTL/ImgH 
                 1.56 
               
               
                   
               
            
           
         
       
     
     5th Embodiment 
       FIG.  9    is a schematic view of an image capturing optical lens system according to the 5th embodiment of the present disclosure.  FIG.  10    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 5th embodiment. In  FIG.  9   , the image capturing optical lens system includes, in order from an object side to an image side, an aperture stop  500 , a first lens element  510 , a second lens element  520 , a third lens element  530 , a fourth lens element  540 , a fifth lens element  550 , a sixth lens element  560 , an IR-cut filter  580 , an image plane  570 , and an image sensor  590 . 
     The first lens element  510  with positive refractive power has an object-side surface  511  being convex at a paraxial region thereof and an image-side surface  512  being convex at a paraxial region thereof. The first lens element  510  is made of plastic material and has the object-side surface  511  and the image-side surface  512  being both aspheric. 
     The second lens element  520  with negative refractive power has an object-side surface  521  being convex at a paraxial region thereof and an image-side surface  522  being concave at a paraxial region thereof. The second lens element  520  is made of plastic material and has the object-side surface  521  and the image-side surface  522  being both aspheric. 
     The third lens element  530  with negative refractive power has an object-side surface  531  being convex at a paraxial region thereof and an image-side surface  532  being concave at a paraxial region thereof. The third lens element  530  is made of plastic material and has the object-side surface  531  and the image-side surface  532  being both aspheric. 
     The fourth lens element  540  with positive refractive power has an object-side surface  541  being convex at a paraxial region thereof and an image-side surface  542  being convex at a paraxial region thereof. The fourth lens element  540  is made of plastic material and has the object-side surface  541  and the image-side surface  542  being both aspheric. 
     The fifth lens element  550  with negative refractive power has an object-side surface  551  being concave at a paraxial region thereof and an image-side surface  552  being convex at a paraxial region thereof. The fifth lens element  550  is made of plastic material and has the object-side surface  551  and the image-side surface  552  being both aspheric. 
     The sixth lens element  560  with negative refractive power has an object-side surface  561  being convex at a paraxial region thereof and an image-side surface  562  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  560  is made of plastic material and has the object-side surface  561  and the image-side surface  562  being both aspheric. 
     The IR-cut filter  580  made of glass material is located between the sixth lens element  560  and the image plane  570 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 5th embodiment are shown in Table 9, and the aspheric surface data are shown in Table 10 below. 
     
       
         
           
               
             
               
                 TABLE 9 
               
             
            
               
                   
               
               
                 5th Embodiment 
               
               
                 f = 3.53 mm, Fno = 2.28, HFOV = 38.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.125  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 2.098 
                 (ASP) 
                 0.412 
                 Plastic 
                 1.570 
                 57.5 
                 3.07 
               
               
                 3 
                   
                 −9.769 
                 (ASP) 
                 0.040 
               
               
                 4 
                 Lens 2 
                 3.157 
                 (ASP) 
                 0.230 
                 Plastic 
                 1.640 
                 23.3 
                 −5.46 
               
               
                 5 
                   
                 1.611 
                 (ASP) 
                 0.236 
               
               
                 6 
                 Lens 3 
                 7.409 
                 (ASP) 
                 0.439 
                 Plastic 
                 1.544 
                 55.9 
                 −147.68 
               
               
                 7 
                   
                 6.642 
                 (ASP) 
                 0.167 
               
               
                 8 
                 Lens 4 
                 72.487 
                 (ASP) 
                 0.354 
                 Plastic 
                 1.544 
                 55.9 
                 3.62 
               
               
                 9 
                   
                 −2.019 
                 (ASP) 
                 0.292 
               
               
                 10 
                 Lens 5 
                 −0.951 
                 (ASP) 
                 0.280 
                 Plastic 
                 1.633 
                 23.4 
                 −6.64 
               
               
                 11 
                   
                 −1.369 
                 (ASP) 
                 0.199 
               
               
                 12 
                 Lens 6 
                 1.577 
                 (ASP) 
                 0.803 
                 Plastic 
                 1.544 
                 55.9 
                 −20.65 
               
               
                 13 
                   
                 1.134 
                 (ASP) 
                 0.600 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.200 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.300 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 10 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 −2.9182E−02 
                 −4.0000E+01  
                 −3.9740E+01 
                 −8.7375E+00 
                 −2.4782E−01 
                 −1.0194E+01 
               
               
                 A4 = 
                 −6.1716E−03 
                 3.7462E−03 
                 −3.0152E−02 
                 −2.1965E−02 
                 −1.0134E−01 
                 −1.0225E−01 
               
               
                 A6 = 
                 −1.9011E−02 
                 9.0896E−02 
                  1.3569E−01 
                  2.8108E−02 
                 −3.5725E−02 
                 −7.1141E−03 
               
               
                 A8 = 
                  2.5131E−02 
                 −2.1060E−01  
                 −1.8667E−01 
                  7.4668E−02 
                  1.1420E−01 
                 −7.4579E−02 
               
               
                 A10 = 
                 −1.0473E−01 
                 2.9488E−02 
                 −1.0551E−01 
                 −3.2137E−01 
                  1.2721E−02 
                  2.1331E−02 
               
               
                 A12 = 
                  1.7110E−01 
                 7.3654E−02 
                  7.7073E−02 
                  2.6333E−01 
                 −1.9191E−02 
                  1.2521E−02 
               
               
                 A14 = 
                 −1.4692E−01 
                 −6.9236E−02  
                  2.8732E−02 
                 −4.5979E−02 
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                  0.0000E+00 
                  9.0561E−01 
                 −5.5036E+00 
                 −7.1634E−01 
                 −1.5362E+01 
                 −6.1704E+00 
               
               
                 A4 = 
                 −1.1202E−01 
                 −3.1565E−02 
                 −6.6246E−02 
                  1.4768E−01 
                 −1.7629E−01 
                 −7.4355E−02 
               
               
                 A6 = 
                 −1.0862E−02 
                 −2.2451E−02 
                 −3.0597E−02 
                 −5.5223E−02 
                  9.2042E−02 
                  3.0461E−02 
               
               
                 A8 = 
                 −2.6754E−03 
                  3.7699E−02 
                  1.5841E−01 
                  2.0759E−02 
                 −5.7974E−02 
                 −1.2184E−02 
               
               
                 A10 = 
                 −8.2421E−02 
                  5.9365E−02 
                 −8.0997E−02 
                  1.3723E−02 
                  3.2714E−02 
                  3.5168E−03 
               
               
                 A12 = 
                 −1.8457E−02 
                 −4.3189E−03 
                 −1.0397E−02 
                 −4.6091E−03 
                 −1.0165E−02 
                 −6.6148E−04 
               
               
                 A14 = 
                  1.8390E−01 
                 −7.3347E−03 
                  1.2640E−02 
                 −4.5883E−03 
                  1.5483E−03 
                  6.9342E−05 
               
               
                 A16 = 
                 −1.0137E−01 
                 − 
                 −2.8705E−03 
                  1.5255E−03 
                 −9.1738E−05 
                 −2.9676E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 5th embodiment, 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. Moreover, these parameters can be calculated from Table 9 and Table 10 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.53 
                 R12/f2 
                 −0.21 
               
               
                 Fno 
                 2.28 
                 f/f4 
                 0.98 
               
               
                 HFOV (deg.) 
                 38.5 
                 f/f5 
                 −0.53 
               
               
                 (V2 + V5)/V1 
                 0.81 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 0.72 
               
               
                 V5/V6 
                 0.419 
                 CT2/tan(α) (mm) 
                 0.07 
               
               
                 CT5/CT6 
                 0.35 
                 BFL/Td 
                 0.30 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −0.65 
                 ImgH/f 
                 0.809 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.18 
                 TTL/ImgH 
                 1.57 
               
               
                   
               
            
           
         
       
     
     6th Embodiment 
       FIG.  11    is a schematic view of an image capturing optical lens system according to the 6th embodiment of the present disclosure.  FIG.  12    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 6th embodiment. In  FIG.  11   , the image capturing optical lens system includes, in order from an object side to an image side, an aperture stop  600 , a first lens element  610 , a second lens element  620 , a third lens element  630 , a fourth lens element  640 , a fifth lens element  650 , a sixth lens element  660 , an IR-cut filter  680 , an image plane  670 , and an image sensor  690 . 
     The first lens element  610  with positive refractive power has an object-side surface  611  being convex at a paraxial region thereof and an image-side surface  612  being concave at a paraxial region thereof. The first lens element  610  is made of plastic material and has the object-side surface  611  and the image-side surface  612  being both aspheric. 
     The second lens element  620  with negative refractive power has an object-side surface  621  being convex at a paraxial region thereof and an image-side surface  622  being concave at a paraxial region thereof. The second lens element  620  is made of plastic material and has the object-side surface  621  and the image-side surface  622  being both aspheric. 
     The third lens element  630  with positive refractive power has an object-side surface  631  being convex at a paraxial region thereof and an image-side surface  632  being concave at a paraxial region thereof. The third lens element  630  is made of plastic material and has the object-side surface  631  and the image-side surface  632  being both aspheric. 
     The fourth lens element  640  with positive refractive power has an object-side surface  641  being concave at a paraxial region thereof and an image-side surface  642  being convex at a paraxial region thereof. The fourth lens element  640  is made of plastic material and has the object-side surface  641  and the image-side surface  642  being both aspheric. 
     The fifth lens element  650  with negative refractive power has an object-side surface  651  being concave at a paraxial region thereof and an image-side surface  652  being convex at a paraxial region thereof. The fifth lens element  650  is made of plastic material and has the object-side surface  651  and the image-side surface  652  being both aspheric. 
     The sixth lens element  660  with positive refractive power has an object-side surface  661  being convex at a paraxial region thereof and an image-side surface  662  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  660  is made of plastic material and has the object-side surface  661  and the image-side surface  662  being both aspheric. 
     The IR-cut filter  680  made of glass material is located between the sixth lens element  660  and the image plane  670 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 6th embodiment are shown in Table 11, and the aspheric surface data are shown in Table 12 below. 
     
       
         
           
               
             
               
                 TABLE 11 
               
             
            
               
                   
               
               
                 6th Embodiment 
               
               
                 f = 3.62 mm, Fno = 2.35, HFOV = 37.8 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.148  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.962 
                 (ASP) 
                 0.418 
                 Plastic 
                 1.544 
                 55.9 
                 4.11 
               
               
                 3 
                   
                 14.881 
                 (ASP) 
                 0.050 
               
               
                 4 
                 Lens 2 
                 2.961 
                 (ASP) 
                 0.240 
                 Plastic 
                 1.640 
                 23.3 
                 −6.66 
               
               
                 5 
                   
                 1.692 
                 (ASP) 
                 0.185 
               
               
                 6 
                 Lens 3 
                 3.007 
                 (ASP) 
                 0.362 
                 Plastic 
                 1.544 
                 55.9 
                 14.05 
               
               
                 7 
                   
                 4.745 
                 (ASP) 
                 0.321 
               
               
                 8 
                 Lens 4 
                 −12.116 
                 (ASP) 
                 0.435 
                 Plastic 
                 1.544 
                 55.9 
                 4.08 
               
               
                 9 
                   
                 −1.900 
                 (ASP) 
                 0.300 
               
               
                 10 
                 Lens 5 
                 −0.916 
                 (ASP) 
                 0.250 
                 Plastic 
                 1.640 
                 23.3 
                 −5.53 
               
               
                 11 
                   
                 −1.367 
                 (ASP) 
                 0.128 
               
               
                 12 
                 Lens 6 
                 1.310 
                 (ASP) 
                 0.787 
                 Plastic 
                 1.530 
                 55.8 
                 70.78 
               
               
                 13 
                   
                 1.075 
                 (ASP) 
                 0.600 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.200 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.426 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 12 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 4.6664E−01 
                 −4.0000E+01 
                 −3.0098E+01 
                 −7.5608E+00 
                 −4.8799E+00 
                  1.9273E+00 
               
               
                 A4 = 
                 −2.1799E−04  
                 −5.3426E−02 
                 −6.9007E−02 
                 −3.8393E−02 
                 −9.5062E−02 
                 −9.2795E−02 
               
               
                 A6 = 
                 1.3945E−02 
                  1.7055E−01 
                  6.3894E−02 
                  9.3340E−03 
                 −3.7983E−02 
                 −3.5163E−02 
               
               
                 A8 = 
                 5.2083E−04 
                 −2.5636E−01 
                 −6.9036E−02 
                  7.0595E−02 
                  7.2969E−02 
                 −6.9952E−02 
               
               
                 A10 = 
                 −7.4073E−02  
                 −3.8467E−02 
                 −3.1084E−01 
                 −3.5385E−01 
                 −1.9872E−02 
                  5.1614E−02 
               
               
                 A12 = 
                 1.7110E−01 
                  7.3654E−02 
                  7.7073E−02 
                  2.6333E−01 
                  1.8507E−02 
                  3.6115E−02 
               
               
                 A14 = 
                 −1.4692E−01  
                 −6.9236E−02 
                  2.8732E−02 
                 −4.5979E−02 
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −1.0000E+00 
                  1.0135E+00 
                 −6.1714E+00 
                 −6.3844E−01 
                 −1.2851E+01 
                 −5.3345E+00 
               
               
                 A4 = 
                 −8.7034E−02 
                 −4.5830E−02 
                 −1.0529E−01 
                  1.3602E−01 
                 −1.7692E−01 
                 −8.0147E−02 
               
               
                 A6 = 
                 −2.2875E−02 
                 −4.7613E−03 
                 −2.1382E−02 
                 −6.0425E−02 
                  9.2596E−02 
                  3.3015E−02 
               
               
                 A8 = 
                  2.4491E−02 
                  3.7893E−02 
                  1.6663E−01 
                  2.3794E−02 
                 −5.8046E−02 
                 −1.2613E−02 
               
               
                 A10 = 
                 −7.1043E−02 
                  5.4155E−02 
                 −7.8022E−02 
                  1.4800E−02 
                  3.2694E−02 
                  3.5304E−03 
               
               
                 A12 = 
                 −2.0087E−02 
                 −6.8905E−03 
                 −1.2281E−02 
                 −4.3372E−03 
                 −1.0164E−02 
                 −6.5395E−04 
               
               
                 A14 = 
                  1.8513E−01 
                 −1.0180E−02 
                  1.1470E−02 
                 −4.6163E−03 
                  1.5482E−03 
                  6.9323E−05 
               
               
                 A16 = 
                 −1.0137E−01 
                 — 
                 −1.7129E−03 
                  1.4470E−03 
                 −9.1665E−05 
                 −3.0797E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 6th embodiment, 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. Moreover, these parameters can be calculated from Table 11 and Table 12 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.62 
                 R12/f2 
                 −0.16 
               
               
                 Fno 
                 2.35 
                 f/f4 
                 0.89 
               
               
                 HFOV (deg.) 
                 37.8 
                 f/f5 
                 −0.65 
               
               
                 (V2 + V5)/V1 
                 0.83 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 0.80 
               
               
                 V5/V6 
                 0.418 
                 CT2/tan(α) (mm) 
                 0.07 
               
               
                 CT5/CT6 
                 0.32 
                 BFL/Td 
                 0.33 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.30 
                 ImgH/f 
                 0.789 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.20 
                 TTL/ImgH 
                 1.62 
               
               
                   
               
            
           
         
       
     
     7th Embodiment 
       FIG.  13    is a schematic view of an image capturing optical lens system according to the 7th embodiment of the present disclosure.  FIG.  14    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 7th embodiment. In  FIG.  13   , the image capturing optical lens system includes, in order from an object side to an image side, an aperture stop  700 , a first lens element  710 , a stop  701 , a second lens element  720 , a third lens element  730 , a fourth lens element  740 , a fifth lens element  750 , a sixth lens element  760 , an IR-cut filter  780 , an image plane  770 , and an image sensor  790 . 
     The first lens element  710  with positive refractive power has an object-side surface  711  being convex at a paraxial region thereof and an image-side surface  712  being concave at a paraxial region thereof. The first lens element  710  is made of plastic material and has the object-side surface  711  and the image-side surface  712  being both aspheric. 
     The second lens element  720  with negative refractive power has an object-side surface  721  being concave at a paraxial region thereof and an image-side surface  722  being concave at a paraxial region thereof. The second lens element  720  is made of plastic material and has the object-side surface  721  and the image-side surface  722  being both aspheric. 
     The third lens element  730  with positive refractive power has an object-side surface  731  being convex at a paraxial region thereof and an image-side surface  732  being convex at a paraxial region thereof. The third lens element  730  is made of plastic material and has the object-side surface  731  and the image-side surface  732  being both aspheric. 
     The fourth lens element  740  with positive refractive power has an object-side surface  741  being concave at a paraxial region thereof and an image-side surface  742  being convex at a paraxial region thereof. The fourth lens element  740  is made of plastic material and has the object-side surface  741  and the image-side surface  742  being both aspheric. 
     The fifth lens element  750  with negative refractive power has an object-side surface  751  being concave at a paraxial region thereof and an image-side surface  752  being convex at a paraxial region thereof. The fifth lens element  750  is made of plastic material and has the object-side surface  751  and the image-side surface  752  being both aspheric. 
     The sixth lens element  760  with negative refractive power has an object-side surface  761  being convex at a paraxial region thereof and an image-side surface  762  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  760  is made of plastic material and has the object-side surface  761  and the image-side surface  762  being both aspheric. 
     The IR-cut filter  780  made of glass material is located between the sixth lens element  760  and the image plane  770 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 7th embodiment are shown in Table 13, and the aspheric surface data are shown in Table 14 below. 
     
       
         
           
               
             
               
                 TABLE 13 
               
             
            
               
                   
               
               
                 7th Embodiment 
               
               
                 f = 3.75 mm, Fno = 2.25, HFOV = 37.6 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.230  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.551 
                 (ASP) 
                 0.432 
                 Plastic 
                 1.544 
                 55.9 
                 3.47 
               
               
                 3 
                   
                 7.794 
                 (ASP) 
                 0.078 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 4 
                 Stop 
                 Plano 
                 0.154 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 5 
                 Lens 2 
                 −5.031 
                 (ASP) 
                 0.250 
                 Plastic 
                 1.640 
                 23.3 
                 −4.99 
               
               
                 6 
                   
                 8.923 
                 (ASP) 
                 0.178 
               
               
                 7 
                 Lens 3 
                 3.714 
                 (ASP) 
                 0.514 
                 Plastic 
                 1.544 
                 55.9 
                 5.81 
               
               
                 8 
                   
                 −20.315 
                 (ASP) 
                 0.522 
               
               
                 9 
                 Lens 4 
                 −1.856 
                 (ASP) 
                 0.572 
                 Plastic 
                 1.544 
                 55.9 
                 2.76 
               
               
                 10 
                   
                 −0.920 
                 (ASP) 
                 0.039 
               
               
                 11 
                 Lens 5 
                 −4.324 
                 (ASP) 
                 0.318 
                 Plastic 
                 1.640 
                 23.3 
                 −17.02 
               
               
                 12 
                   
                 −7.378 
                 (ASP) 
                 0.086 
               
               
                 13 
                 Lens 6 
                 4.222 
                 (ASP) 
                 0.472 
                 Plastic 
                 1.535 
                 56.3 
                 −2.57 
               
               
                 14 
                   
                 0.996 
                 (ASP) 
                 0.700 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 15 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 16 
                   
                 Plano 
                 0.263 
               
               
                 17 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
               
                 Half of the diameter of the stop at Surface 4 is 0.82 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 14 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 5 
                 6 
                 7 
                 8 
               
               
                   
               
               
                 k = 
                 −4.4079E−02  
                 5.0000E+01 
                 −1.0643E+00  
                 −8.4921E+01 
                 −1.3118E+00 
                  1.0000E+00 
               
               
                 A4 = 
                 1.7490E−02 
                 9.4783E−04 
                 2.2373E−02 
                 −4.9248E−02 
                 −2.3211E−01 
                 −1.1809E−01 
               
               
                 A6 = 
                 4.9271E−03 
                 5.8422E−02 
                 2.4605E−01 
                  4.5161E−01 
                  2.6588E−01 
                 −1.7947E−02 
               
               
                 A8 = 
                 1.2641E−01 
                 −2.9751E−01  
                 −9.9335E−01  
                 −1.0749E+00 
                 −4.8494E−01 
                  1.8494E−02 
               
               
                 A10 = 
                 −5.1819E−01  
                 6.3338E−01 
                 2.0612E+00 
                  1.7513E+00 
                  6.2343E−01 
                 −2.3733E−03 
               
               
                 A12 = 
                 9.3670E−01 
                 −8.8581E−01  
                 −2.6879E+00  
                 −1.7291E+00 
                 −4.7955E−01 
                  3.4599E−03 
               
               
                 A14 = 
                 −6.4751E−01  
                 2.6447E−01 
                 1.2659E+00 
                  7.3759E−01 
                  1.5910E−01 
                 — 
               
               
                   
               
               
                 Surface # 
                 9 
                 10 
                 11 
                 12 
                 13 
                 14 
               
               
                   
               
               
                 k = 
                 −5.7148E−01 
                 −1.0341E+00  
                 −1.2747E+00 
                 −8.2998E+00 
                 −8.4741E+01 
                 −5.1944E+00 
               
               
                 A4 = 
                 −4.0590E−02 
                 1.2497E−01 
                 −9.6189E−03 
                 −2.0558E−02 
                 −1.5776E−01 
                 −1.3667E−01 
               
               
                 A6 = 
                 −1.2965E−01 
                 −2.0774E−01  
                 −6.6101E−03 
                 −3.2392E−03 
                 −9.1813E−03 
                  7.4540E−02 
               
               
                 A8 = 
                 −6.9615E−03 
                 1.0877E−01 
                 −1.9492E−03 
                 −8.0848E−04 
                  9.8789E−02 
                 −2.8848E−02 
               
               
                 A10 = 
                  2.6027E−01 
                 2.0113E−02 
                 −8.6543E−04 
                 −3.8551E−05 
                 −7.7556E−02 
                  7.2957E−03 
               
               
                 A12 = 
                 −1.7903E−01 
                 −1.9185E−02  
                 −5.6726E−05 
                  8.0891E−05 
                  2.7755E−02 
                 −1.2091E−03 
               
               
                 A14 = 
                  3.5718E−02 
                 2.3228E−03 
                 — 
                 — 
                 −4.7500E−03 
                  1.1933E−04 
               
               
                 A16 = 
                 — 
                 — 
                 — 
                 — 
                  3.1387E−04 
                 −5.2507E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 7th embodiment, 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. Moreover, these parameters can be calculated from Table 13 and Table 14 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.75 
                 R12/f2 
                 −0.20 
               
               
                 Fno 
                 2.25 
                 f/f4 
                 1.36 
               
               
                 HFOV (deg.) 
                 37.6 
                 f/f5 
                 −0.22 
               
               
                 (V2 + V5)/V1 
                 0.83 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 1.23 
               
               
                 V5/V6 
                 0.414 
                 CT2/tan(α) (mm) 
                 0.07 
               
               
                 CT5/CT6 
                 0.67 
                 BFL/Td 
                 0.31 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.50 
                 ImgH/f 
                 0.782 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.26 
                 TTL/ImgH 
                 1.61 
               
               
                   
               
            
           
         
       
     
     8th Embodiment 
       FIG.  15    is a schematic view of an image capturing optical lens system according to the 8th embodiment of the present disclosure.  FIG.  16    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 8th embodiment. In  FIG.  15   , the image capturing optical lens 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 , a sixth lens element  860 , an IR-cut filter  880 , an image plane  870 , and an image sensor  890 . 
     The first lens element  810  with positive refractive power has an object-side surface  811  being convex at a paraxial region thereof and an image-side surface  812  being concave at a paraxial region thereof. The first lens element  810  is made of plastic material and has the object-side surface  811  and the image-side surface  812  being both aspheric. 
     The second lens element  820  with negative refractive power has an object-side surface  821  being convex at a paraxial region thereof and an image-side surface  822  being concave at a paraxial region thereof. The second lens element  820  is made of plastic material and has the object-side surface  821  and the image-side surface  822  being both aspheric. 
     The third lens element  830  with positive refractive power has an object-side surface  831  being convex at a paraxial region thereof and an image-side surface  832  being convex at a paraxial region thereof. The third lens element  830  is made of plastic material and has the object-side surface  831  and the image-side surface  832  being both aspheric. 
     The fourth lens element  840  with positive refractive power has an object-side surface  841  being convex at a paraxial region thereof and an image-side surface  842  being convex at a paraxial region thereof. The fourth lens element  840  is made of plastic material and has the object-side surface  841  and the image-side surface  842  being both aspheric. 
     The fifth lens element  850  with negative refractive power has an object-side surface  851  being concave at a paraxial region thereof and an image-side surface  852  being convex at a paraxial region thereof. The fifth lens element  850  is made of plastic material and has the object-side surface  851  and the image-side surface  852  being both aspheric. 
     The sixth lens element  860  with positive refractive power has an object-side surface  861  being convex at a paraxial region thereof and an image-side surface  862  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  860  is made of plastic material and has the object-side surface  861  and the image-side surface  862  being both aspheric. 
     The IR-cut filter  880  made of glass material is located between the sixth lens element  860  and the image plane  870 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 8th embodiment are shown in Table 15, and the aspheric surface data are shown in Table 16 below. 
     
       
         
           
               
             
               
                 TABLE 15 
               
             
            
               
                   
               
               
                 8th Embodiment 
               
               
                 f = 3.75 mm, Fno = 2.22, HFOV = 37.6 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.230  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.634 
                 (ASP) 
                 0.422 
                 Plastic 
                 1.544 
                 55.9 
                 3.69 
               
               
                 3 
                   
                 7.993 
                 (ASP) 
                 0.133 
               
               
                 4 
                 Lens 2 
                 2.740 
                 (ASP) 
                 0.240 
                 Plastic 
                 1.640 
                 23.3 
                 −7.05 
               
               
                 5 
                   
                 1.646 
                 (ASP) 
                 0.230 
               
               
                 6 
                 Lens 3 
                 14.616 
                 (ASP) 
                 0.250 
                 Plastic 
                 1.544 
                 55.9 
                 23.00 
               
               
                 7 
                   
                 −86.443 
                 (ASP) 
                 0.156 
               
               
                 8 
                 Lens 4 
                 100.000 
                 (ASP) 
                 0.312 
                 Plastic 
                 1.544 
                 55.9 
                 6.09 
               
               
                 9 
                   
                 −3.424 
                 (ASP) 
                 0.391 
               
               
                 10 
                 Lens 5 
                 −0.788 
                 (ASP) 
                 0.280 
                 Plastic 
                 1.640 
                 23.3 
                 −9.25 
               
               
                 11 
                   
                 −1.036 
                 (ASP) 
                 0.123 
               
               
                 12 
                 Lens 6 
                 2.018 
                 (ASP) 
                 1.116 
                 Plastic 
                 1.544 
                 55.9 
                 503.03 
               
               
                 13 
                   
                 1.636 
                 (ASP) 
                 0.700 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.226 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 16 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 −2.7168E−02 
                 −6.8822E+01 
                 −3.2439E+01  
                 −8.8020E+00 
                 −8.9828E+01 
                  1.0000E+00 
               
               
                 A4 = 
                  4.4163E−03 
                 −8.0677E−02 
                 −1.2812E−01  
                 −1.9572E−02 
                 −2.3676E−02 
                 −4.1131E−02 
               
               
                 A6 = 
                  2.3039E−02 
                  1.4665E−01 
                 8.7887E−02 
                  9.9597E−03 
                 −2.1991E−02 
                 −2.0921E−02 
               
               
                 A8 = 
                 −1.7095E−02 
                 −1.1445E−01 
                 1.9406E−02 
                  1.1952E−01 
                  2.7782E−02 
                 −2.2773E−03 
               
               
                 A10 = 
                 −2.9339E−02 
                 −7.0578E−03 
                 −1.3469E−01  
                 −2.5090E−01 
                  1.7926E−03 
                  4.3882E−02 
               
               
                 A12 = 
                  9.9529E−02 
                  4.2875E−02 
                 4.4865E−02 
                  1.5331E−01 
                 −5.6449E−05 
                 −1.1873E−05 
               
               
                 A14 = 
                 −7.7512E−02 
                 −3.6527E−02 
                 1.5158E−02 
                 −2.4257E−02 
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −3.2429E+00 
                 3.3303E+00 
                 −3.3077E+00 
                 −8.0426E−01 
                 −1.9814E+01 
                 −7.3813E+00 
               
               
                 A4 = 
                 −1.0146E−01 
                 −4.5648E−02  
                 −8.1619E−02 
                  1.1978E−01 
                 −1.2012E−01 
                 −5.1343E−02 
               
               
                 A6 = 
                 −3.9893E−02 
                 −4.2874E−02  
                 −2.0633E−02 
                 −2.6545E−02 
                  6.7400E−02 
                  1.9885E−02 
               
               
                 A8 = 
                  2.2123E−02 
                 1.9586E−02 
                  1.2212E−01 
                  2.4245E−02 
                 −4.1778E−02 
                 −7.8640E−03 
               
               
                 A10 = 
                 −1.8964E−02 
                 3.3795E−02 
                 −4.4025E−02 
                  8.1061E−03 
                  2.1037E−02 
                  2.1725E−03 
               
               
                 A12 = 
                  2.0746E−02 
                 −2.3182E−03  
                 −7.9093E−03 
                 −3.4715E−03 
                 −5.8863E−03 
                 −3.8311E−04 
               
               
                 A14 = 
                  6.1208E−02 
                 1.1093E−03 
                  2.5948E−03 
                 −2.7535E−03 
                  8.2483E−04 
                  3.8278E−05 
               
               
                 A16 = 
                 −4.8470E−02 
                 — 
                  4.5007E−04 
                  7.1272E−04 
                 −4.5893E−05 
                 −1.6059E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 8th embodiment, 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. Moreover, these parameters can be calculated from Table 15 and Table 16 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.75 
                 R12/f2 
                 −0.23 
               
               
                 Fno 
                 2.22 
                 f/f4 
                 0.62 
               
               
                 HFOV (deg.) 
                 37.6 
                 f/f5 
                 −0.40 
               
               
                 (V2 + V5)/V1 
                 0.83 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 0.67 
               
               
                 V5/V6 
                 0.417 
                 CT2/tan(α) (mm) 
                 0.06 
               
               
                 CT5/CT6 
                 0.25 
                 BFL/Td 
                 0.29 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.51 
                 ImgH/f 
                 0.783 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.14 
                 TTL/ImgH 
                 1.61 
               
               
                   
               
            
           
         
       
     
     9th Embodiment 
       FIG.  17    is a schematic view of an image capturing optical lens system according to the 9th embodiment of the present disclosure.  FIG.  18    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 9th embodiment. In  FIG.  17   , the image capturing optical lens 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 , a sixth lens element  960 , an IR-cut filter  980 , an image plane  970 , and an image sensor  990 . 
     The first lens element  910  with positive refractive power has an object-side surface  911  being convex at a paraxial region thereof and an image-side surface  912  being concave at a paraxial region thereof. The first lens element  910  is made of plastic material and has the object-side surface  911  and the image-side surface  912  being both aspheric. 
     The second lens element  920  with negative refractive power has an object-side surface  921  being concave at a paraxial region thereof and an image-side surface  922  being concave at a paraxial region thereof. The second lens element  920  is made of plastic material and has the object-side surface  921  and the image-side surface  922  being both aspheric. 
     The third lens element  930  with positive refractive power has an object-side surface  931  being convex at a paraxial region thereof and an image-side surface  932  being concave at a paraxial region thereof. The third lens element  930  is made of plastic material and has the object-side surface  931  and the image-side surface  932  being both aspheric. 
     The fourth lens element  940  with positive refractive power has an object-side surface  941  being concave at a paraxial region thereof and an image-side surface  942  being convex at a paraxial region thereof. The fourth lens element  940  is made of plastic material and has the object-side surface  941  and the image-side surface  942  being both aspheric. 
     The fifth lens element  950  with negative refractive power has an object-side surface  951  being concave at a paraxial region thereof and an image-side surface  952  being convex at a paraxial region thereof. The fifth lens element  950  is made of plastic material and has the object-side surface  951  and the image-side surface  952  being both aspheric. 
     The sixth lens element  960  with negative refractive power has an object-side surface  961  being concave at a paraxial region thereof and an image-side surface  962  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  960  is made of plastic material and has the object-side surface  961  and the image-side surface  962  being both aspheric. 
     The IR-cut filter  980  made of glass material is located between the sixth lens element  960  and the image plane  970 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 9th embodiment are shown in Table 17, and the aspheric surface data are shown in Table 18 below. 
     
       
         
           
               
             
               
                 TABLE 17 
               
             
            
               
                   
               
               
                 9th Embodiment 
               
               
                 f = 3.75 mm, Fno = 2.25, HFOV = 37.3 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.253  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.472 
                 (ASP) 
                 0.467 
                 Plastic 
                 1.544 
                 55.9 
                 3.00 
               
               
                 3 
                   
                 13.066 
                 (ASP) 
                 0.198 
               
               
                 4 
                 Lens 2 
                 −5.659 
                 (ASP) 
                 0.250 
                 Plastic 
                 1.650 
                 21.4 
                 −5.41 
               
               
                 5 
                   
                 9.448 
                 (ASP) 
                 0.209 
               
               
                 6 
                 Lens 3 
                 5.478 
                 (ASP) 
                 0.478 
                 Plastic 
                 1.544 
                 55.9 
                 11.19 
               
               
                 7 
                   
                 53.006 
                 (ASP) 
                 0.364 
               
               
                 8 
                 Lens 4 
                 −2.418 
                 (ASP) 
                 0.453 
                 Plastic 
                 1.544 
                 55.9 
                 3.22 
               
               
                 9 
                   
                 −1.083 
                 (ASP) 
                 0.070 
               
               
                 10 
                 Lens 5 
                 −3.228 
                 (ASP) 
                 0.394 
                 Plastic 
                 1.583 
                 30.2 
                 −75.24 
               
               
                 11 
                   
                 −3.641 
                 (ASP) 
                 0.247 
               
               
                 12 
                 Lens 6 
                 −4.543 
                 (ASP) 
                 0.579 
                 Plastic 
                 1.530 
                 55.8 
                 −2.39 
               
               
                 13 
                   
                 1.829 
                 (ASP) 
                 0.400 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.305 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 18 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 −1.1941E−01  
                 2.6303E+00 
                 −1.0000E+00  
                 −1.4392E+01 
                 −7.3165E+00 
                 −2.0000E+01 
               
               
                 A4 = 
                 6.6018E−03 
                 3.8742E−03 
                 6.5278E−03 
                 −4.8042E−02 
                 −2.3979E−01 
                 −1.3984E−01 
               
               
                 A6 = 
                 4.2878E−02 
                 5.6943E−02 
                 2.7610E−01 
                  4.5649E−01 
                  2.5499E−01 
                 −2.3033E−02 
               
               
                 A8 = 
                 5.1710E−02 
                 −3.0745E−01  
                 −1.0040E+00  
                 −1.0431E+00 
                 −4.7326E−01 
                  3.4853E−02 
               
               
                 A10 = 
                 −4.7087E−01  
                 6.9641E−01 
                 2.1186E+00 
                  1.7683E+00 
                  6.5137E−01 
                 −1.8006E−03 
               
               
                 A12 = 
                 9.3977E−01 
                 −8.8727E−01  
                 −2.6876E+00  
                 −1.7285E+00 
                 −4.7999E−01 
                 −1.6335E−03 
               
               
                 A14 = 
                 −6.4751E−01  
                 2.6447E−01 
                 1.2659E+00 
                  7.3759E−01 
                  1.5835E−01 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −5.6564E−01 
                 −1.0158E+00  
                 −2.4737E+01 
                 −1.5837E+01 
                 −5.0000E+01 
                 −3.4499E+00 
               
               
                 A4 = 
                 −5.3796E−02 
                 9.5124E−02 
                 −3.6509E−02 
                 −2.2990E−02 
                 −1.4338E−01 
                 −1.5150E−01 
               
               
                 A6 = 
                 −1.0996E−01 
                 −1.9462E−01  
                 −6.7899E−03 
                  8.0124E−04 
                 −1.0711E−02 
                  7.9095E−02 
               
               
                 A8 = 
                 −8.8751E−03 
                 1.2004E−01 
                  1.0570E−03 
                 −5.6126E−04 
                  9.8961E−02 
                 −2.9464E−02 
               
               
                 A10 = 
                  2.5706E−01 
                 2.3369E−02 
                 −1.8894E−03 
                  3.4463E−04 
                 −7.7641E−02 
                  7.2539E−03 
               
               
                 A12 = 
                 −1.8086E−01 
                 −1.9355E−02  
                  2.5699E−05 
                 −1.9140E−04 
                  2.7727E−02 
                 −1.2081E−03 
               
               
                 A14 = 
                  3.5756E−02 
                 1.0974E−03 
                 — 
                 — 
                 −4.7428E−03 
                  1.2009E−04 
               
               
                 A16 = 
                 — 
                 — 
                 — 
                 — 
                  3.1657E−04 
                 −5.1210E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 9th embodiment, 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. Moreover, these parameters can be calculated from Table 17 and Table 18 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.75 
                 R12/f2 
                 −0.34 
               
               
                 Fno 
                 2.25 
                 f/f4 
                 1.16 
               
               
                 HFOV (deg.) 
                 37.3 
                 f/f5 
                 −0.05 
               
               
                 (V2 + V5)/V1 
                 0.92 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 1.39 
               
               
                 V5/V6 
                 0.541 
                 CT2/tan(α) (mm) 
                 0.05 
               
               
                 CT5/CT6 
                 0.68 
                 BFL/Td 
                 0.23 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.25 
                 ImgH/f 
                 0.782 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.06 
                 TTL/ImgH 
                 1.55 
               
               
                   
               
            
           
         
       
     
     10th Embodiment 
       FIG.  19    is a schematic view of an image capturing optical lens system according to the 10th embodiment of the present disclosure.  FIG.  20    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 10th embodiment. In FIG.  19 , the image capturing optical lens 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 , a sixth lens element  1060 , an IR-cut filter  1080 , an image plane  1070 , and an image sensor  1090 . 
     The first lens element  1010  with positive refractive power has an object-side surface  1011  being convex at a paraxial region thereof and an image-side surface  1012  being concave at a paraxial region thereof. The first lens element  1010  is made of plastic material and has the object-side surface  1011  and the image-side surface  1012  being both aspheric. 
     The second lens element  1020  with negative refractive power has an object-side surface  1021  being concave at a paraxial region thereof and an image-side surface  1022  being concave at a paraxial region thereof. The second lens element  1020  is made of plastic material and has the object-side surface  1021  and the image-side surface  1022  being both aspheric. 
     The third lens element  1030  with positive refractive power has an object-side surface  1031  being convex at a paraxial region thereof and an image-side surface  1032  being concave at a paraxial region thereof. The third lens element  1030  is made of plastic material and has the object-side surface  1031  and the image-side surface  1032  being both aspheric. 
     The fourth lens element  1040  with positive refractive power has an object-side surface  1041  being concave at a paraxial region thereof and an image-side surface  1042  being convex at a paraxial region thereof. The fourth lens element  1040  is made of plastic material and has the object-side surface  1041  and the image-side surface  1042  being both aspheric. 
     The fifth lens element  1050  with negative refractive power has an object-side surface  1051  being concave at a paraxial region thereof and an image-side surface  1052  being convex at a paraxial region thereof. The fifth lens element  1050  is made of plastic material and has the object-side surface  1051  and the image-side surface  1052  being both aspheric. 
     The sixth lens element  1060  with negative refractive power has an object-side surface  1061  being convex at a paraxial region thereof and an image-side surface  1062  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  1060  is made of plastic material and has the object-side surface  1061  and the image-side surface  1062  being both aspheric. 
     The IR-cut filter  1080  made of glass material is located between the sixth lens element  1060  and the image plane  1070 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 10th embodiment are shown in Table 19, and the aspheric surface data are shown in Table 20 below. 
     
       
         
           
               
             
               
                 TABLE 19 
               
             
            
               
                   
               
               
                 10th Embodiment 
               
               
                 f = 3.59 mm, Fno = 2.25, HFOV = 38.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
               
               
                 1 
                 Ape. Stop 
                 Plano 
                 −0.217  
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.555 
                 (ASP) 
                 0.434 
                 Plastic 
                 1.544 
                 55.9 
                 3.03 
               
               
                 3 
                   
                 25.036 
                 (ASP) 
                 0.159 
               
               
                 4 
                 Lens 2 
                 −8.152 
                 (ASP) 
                 0.250 
                 Plastic 
                 1.650 
                 21.4 
                 −6.15 
               
               
                 5 
                   
                 7.921 
                 (ASP) 
                 0.252 
               
               
                 6 
                 Lens 3 
                 6.513 
                 (ASP) 
                 0.408 
                 Plastic 
                 1.544 
                 55.9 
                 43.50 
               
               
                 7 
                   
                 8.787 
                 (ASP) 
                 0.259 
               
               
                 8 
                 Lens 4 
                 −3.391 
                 (ASP) 
                 0.510 
                 Plastic 
                 1.544 
                 55.9 
                 2.87 
               
               
                 9 
                   
                 −1.125 
                 (ASP) 
                 0.159 
               
               
                 10 
                 Lens 5 
                 −2.520 
                 (ASP) 
                 0.601 
                 Plastic 
                 1.544 
                 55.9 
                 −7.62 
               
               
                 11 
                   
                 −6.969 
                 (ASP) 
                 0.150 
               
               
                 12 
                 Lens 6 
                 2.819 
                 (ASP) 
                 0.552 
                 Plastic 
                 1.614 
                 25.6 
                 −3.65 
               
               
                 13 
                   
                 1.156 
                 (ASP) 
                 0.450 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.250 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 20 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 −1.1562E−01  
                 4.4393E+01 
                 −9.9274E−01 
                 −1.6521E+01 
                 −1.7908E+01 
                  9.0788E−01 
               
               
                 A4 = 
                 6.1168E−03 
                 3.6207E−03 
                 −5.2100E−03 
                 −5.0513E−02 
                 −2.4346E−01 
                 −1.4692E−01 
               
               
                 A6 = 
                 4.8562E−02 
                 8.4346E−02 
                  2.8445E−01 
                  4.3775E−01 
                  2.4538E−01 
                 −2.8027E−02 
               
               
                 A8 = 
                 5.7173E−02 
                 −3.2403E−01  
                 −1.0170E+00 
                 −1.0549E+00 
                 −4.7435E−01 
                  3.4510E−02 
               
               
                 A10 = 
                 −4.8003E−01  
                 6.8018E−01 
                  2.1072E+00 
                  1.7532E+00 
                  6.4246E−01 
                 −2.2892E−03 
               
               
                 A12 = 
                 9.3889E−01 
                 −8.8725E−01  
                 −2.6876E+00 
                 −1.7284E+00 
                 −4.8003E−01 
                  1.9669E−03 
               
               
                 A14 = 
                 −6.4751E−01  
                 2.6447E−01 
                  1.2659E+00 
                  7.3759E−01 
                  1.5835E−01 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −2.4468E+00 
                 −1.0234E+00  
                 −3.2379E+01 
                 −8.2036E+01 
                 −3.7322E+01 
                 −4.8110E+00 
               
               
                 A4 = 
                 −4.3481E−02 
                 9.7231E−02 
                 −2.1372E−02 
                 −1.2083E−02 
                 −1.5853E−01 
                 −1.4110E−01 
               
               
                 A6 = 
                 −1.0331E−01 
                 −1.8397E−01  
                 −1.7901E−04 
                 −3.0074E−03 
                 −1.1837E−02 
                  7.7668E−02 
               
               
                 A8 = 
                 −8.7354E−03 
                 1.2484E−01 
                  3.6449E−03 
                 −1.3178E−03 
                  9.9016E−02 
                 −2.9445E−02 
               
               
                 A10 = 
                  2.5647E−01 
                 2.3661E−02 
                 −2.7268E−03 
                  5.0464E−04 
                 −7.7656E−02 
                  7.2684E−03 
               
               
                 A12 = 
                 −1.8137E−01 
                 −2.0200E−02  
                 −5.4706E−04 
                 −9.1291E−05 
                  2.7743E−02 
                 −1.2048E−03 
               
               
                 A14 = 
                  3.5075E−02 
                 9.3894E−05 
                 — 
                 — 
                 −4.7398E−03 
                  1.2011E−04 
               
               
                 A16 = 
                 — 
                 — 
                 — 
                 — 
                  3.1460E−04 
                 −5.1835E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 10th embodiment, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 10th embodiment. Moreover, these parameters can be calculated from Table 19 and Table 20 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.59 
                 R12/f2 
                 −0.19 
               
               
                 Fno 
                 2.25 
                 f/f4 
                 1.25 
               
               
                 HFOV (deg.) 
                 38.5 
                 f/f5 
                 −0.47 
               
               
                 (V2 + V5)/V1 
                 1.38 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 1.16 
               
               
                 V5/V6 
                 2.184 
                 CT2/tan(α) (mm) 
                 0.07 
               
               
                 CT5/CT6 
                 1.09 
                 BFL/Td 
                 0.23 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.13 
                 ImgH/f 
                 0.816 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.47 
                 TTL/ImgH 
                 1.56 
               
               
                   
               
            
           
         
       
     
     11th Embodiment 
       FIG.  21    is a schematic view of an image capturing optical lens system according to the 11th embodiment of the present disclosure.  FIG.  22    shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing optical lens system according to the 11th embodiment. In  FIG.  21   , the image capturing optical lens system includes, in order from an object side to an image side, a first lens element  1110 , an aperture stop  1100 , a second lens element  1120 , a third lens element  1130 , a fourth lens element  1140 , a fifth lens element  1150 , a sixth lens element  1160 , an IR-cut filter  1180 , an image plane  1170 , and an image sensor  1190 . 
     The first lens element  1110  with positive refractive power has an object-side surface  1111  being convex at a paraxial region thereof and an image-side surface  1112  being concave at a paraxial region thereof. The first lens element  1110  is made of plastic material and has the object-side surface  1111  and the image-side surface  1112  being both aspheric. 
     The second lens element  1120  with negative refractive power has an object-side surface  1121  being convex at a paraxial region thereof and an image-side surface  1122  being concave at a paraxial region thereof. The second lens element  1120  is made of plastic material and has the object-side surface  1121  and the image-side surface  1122  being both aspheric. 
     The third lens element  1130  with positive refractive power has an object-side surface  1131  being convex at a paraxial region thereof and an image-side surface  1132  being concave at a paraxial region thereof. The third lens element  1130  is made of plastic material and has the object-side surface  1131  and the image-side surface  1132  being both aspheric. 
     The fourth lens element  1140  with positive refractive power has an object-side surface  1141  being concave at a paraxial region thereof and an image-side surface  1142  being convex at a paraxial region thereof. The fourth lens element  1140  is made of plastic material and has the object-side surface  1141  and the image-side surface  1142  being both aspheric. 
     The fifth lens element  1150  with negative refractive power has an object-side surface  1151  being concave at a paraxial region thereof and an image-side surface  1152  being convex at a paraxial region thereof. The fifth lens element  1150  is made of plastic material and has the object-side surface  1151  and the image-side surface  1152  being both aspheric. 
     The sixth lens element  1160  with negative refractive power has an object-side surface  1161  being convex at a paraxial region thereof and an image-side surface  1162  changing from concave at a paraxial region thereof to convex at a peripheral region thereof. The sixth lens element  1160  is made of plastic material and has the object-side surface  1161  and the image-side surface  1162  being both aspheric. 
     The IR-cut filter  1180  made of glass material is located between the sixth lens element  1160  and the image plane  1170 , and will not affect a focal length of the image capturing optical lens system. 
     The detailed optical data of the 11th embodiment are shown in Table 21, and the aspheric surface data are shown in Table 22 below. 
     
       
         
           
               
             
               
                 TABLE 21 
               
             
            
               
                   
               
               
                 11th Embodiment 
               
               
                 f = 3.58 mm, Fno = 2.60, HFOV = 38.6 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                 Curvature 
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 1 
                 Lens 1 
                 1.784 
                 (ASP) 
                 0.388 
                 Plastic 
                 1.535 
                 56.3 
                 4.02 
               
               
                 2 
                   
                 9.697 
                 (ASP) 
                 0.050 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 3 
                 Ape. Stop 
                 Plano 
                 0.235 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 4 
                 Lens 2 
                 34.444 
                 (ASP) 
                 0.250 
                 Plastic 
                 1.650 
                 21.4 
                 −6.75 
               
               
                 5 
                   
                 3.880 
                 (ASP) 
                 0.191 
               
               
                 6 
                 Lens 3 
                 3.110 
                 (ASP) 
                 0.430 
                 Plastic 
                 1.535 
                 56.3 
                 13.56 
               
               
                 7 
                   
                 5.185 
                 (ASP) 
                 0.295 
               
               
                 8 
                 Lens 4 
                 −3.224 
                 (ASP) 
                 0.470 
                 Plastic 
                 1.544 
                 55.9 
                 3.21 
               
               
                 9 
                   
                 −1.191 
                 (ASP) 
                 0.131 
               
               
                 10 
                 Lens 5 
                 −3.690 
                 (ASP) 
                 0.694 
                 Plastic 
                 1.614 
                 25.6 
                 −67.37 
               
               
                 11 
                   
                 −4.341 
                 (ASP) 
                 0.283 
               
               
                 12 
                 Lens 6 
                 2.689 
                 (ASP) 
                 0.517 
                 Plastic 
                 1.614 
                 25.6 
                 −3.02 
               
               
                 13 
                   
                 1.018 
                 (ASP) 
                 0.450 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 14 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 15 
                   
                 Plano 
                 0.257 
               
               
                 16 
                 Image 
                 Plano 
                 — 
               
               
                   
               
               
                 Note: 
               
               
                 Reference wavelength (d-line) is 587.6 nm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 22 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Surface # 
                 1 
                 2 
                 4 
                 5 
                 6 
                 7 
               
               
                   
               
               
                 k = 
                 −7.6470E−02  
                 3.1937E+01 
                 −5.0000E+01 
                 −2.5519E+01 
                 −1.2297E+01 
                 −1.9347E+01 
               
               
                 A4 = 
                 7.1731E−03 
                 1.2153E−02 
                 −2.3455E−02 
                 −5.4475E−02 
                 −2.3603E−01 
                 −1.5498E−01 
               
               
                 A6 = 
                 4.4148E−02 
                 6.8468E−02 
                  2.4633E−01 
                  4.1900E−01 
                  2.5919E−01 
                 −4.0139E−02 
               
               
                 A8 = 
                 5.9718E−02 
                 −3.9910E−01  
                 −1.0863E+00 
                 −1.0778E+00 
                 −4.6874E−01 
                  2.2970E−02 
               
               
                 A10 = 
                 −5.2513E−01  
                 7.2459E−01 
                  2.1056E+00 
                  1.7171E+00 
                  6.1983E−01 
                 −9.1050E−03 
               
               
                 A12 = 
                 9.3889E−01 
                 −8.8725E−01  
                 −2.6876E+00 
                 −1.7284E+00 
                 −4.8001E−01 
                 −2.9391E−04 
               
               
                 A14 = 
                 −6.4751E−01  
                 2.6447E−01 
                  1.2659E+00 
                  7.3759E−01 
                  1.5835E−01 
                 — 
               
               
                 A16 = 
                 — 
                 — 
                 — 
                 — 
                 — 
                 — 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
                 13 
               
               
                   
               
               
                 k = 
                 −1.4331E+00 
                 −1.0000E+00 
                 −8.3901E+01 
                 −2.6945E+01 
                 −3.4415E+01 
                 −4.3565E+00 
               
               
                 A4 = 
                 −4.5095E−02 
                  8.0598E−02 
                 −1.6846E−03 
                  6.7393E−03 
                 −1.6535E−01 
                 −1.4409E−01 
               
               
                 A6 = 
                 −9.9740E−02 
                 −1.8572E−01 
                 −3.6514E−03 
                 −6.8024E−03 
                 −1.3688E−02 
                  7.9199E−02 
               
               
                 A8 = 
                 −1.0534E−02 
                  1.2581E−01 
                  5.1537E−04 
                 −1.7253E−03 
                  9.9446E−02 
                 −2.9673E−02 
               
               
                 A10 = 
                  2.5445E−01 
                  2.4461E−02 
                 −4.5088E−03 
                  8.2334E−04 
                 −7.7462E−02 
                  7.2665E−03 
               
               
                 A12 = 
                 −1.8191E−01 
                 −1.9951E−02 
                  5.8669E−04 
                 −5.6815E−05 
                  2.7782E−02 
                 −1.2029E−03 
               
               
                 A14 = 
                  3.6895E−02 
                 −6.4052E−05 
                 — 
                 — 
                 −4.7393E−03 
                  1.2052E−04 
               
               
                 A16 = 
                 — 
                 — 
                 — 
                 — 
                  3.1108E−04 
                 −5.2565E−06 
               
               
                   
               
            
           
         
       
     
     In the image capturing optical lens system according to the 11th embodiment, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 11th embodiment. Moreover, these parameters can be calculated from Table 21 and Table 22 as the following values and satisfy the following relationships: 
     
       
         
           
               
               
               
               
             
               
                   
               
             
            
               
                 f (mm) 
                 3.58 
                 R12/f2 
                 −0.15 
               
               
                 Fno 
                 2.60 
                 f/f4 
                 1.11 
               
               
                 HFOV (deg.) 
                 38.6 
                 f/f5 
                 −0.05 
               
               
                 (V2 + V5)/V1 
                 0.83 
                 (|f/f5| + |f/f6|)/(f/f4) 
                 1.11 
               
               
                 V5/V6 
                 1.000 
                 CT2/tan(α) (mm) 
                 0.08 
               
               
                 CT5/CT6 
                 1.34 
                 BFL/Td 
                 0.22 
               
               
                 (R1 + R2)/(R1 − R2) 
                 −1.45 
                 ImgH/f 
                 0.820 
               
               
                 (R9 − R10)/(R9 + R10) 
                 −0.08 
                 TTL/ImgH 
                 1.63 
               
               
                   
               
            
           
         
       
     
     It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims.