BR102023011378A2 - IMAGE CAPTURE SYSTEM LENS ASSEMBLY, IMAGE CAPTURE UNIT AND ELECTRONIC DEVICE - Google Patents

Abstract

An imaging system lens assembly includes six lens elements that are in order from one side of the object to one side of the image along an optical path: 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. Each of the six lens elements has a surface on the object side facing toward the object side and a surface on the image side facing toward the image side. The first lens element has positive refractive power. The surface on the image side of the fifth lens element is convex in a paraxial region thereof. The surface on the image side of the fifth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has at least one inflection point.

Description

Technical Field

[0001] The present disclosure relates to an image capture system lens assembly, an image capture unit and an electronic device, more particularly, an image capture system lens assembly and an image capture unit. applicable image capture settings for an electronic device.

Description of Related Technique

[0002] With the development of semiconductor manufacturing technology, the performance of image sensors has been improved, and their pixel size has been scaled smaller. Therefore, presenting high image quality becomes one of the indispensable characteristics of an optical system today.

[0003] Furthermore, due to rapid changes in technology, electronic devices equipped with optical systems are trending toward multifunctionality for various applications, and therefore, functionality requirements for optical systems have increased. However, it is difficult for a conventional optical system to achieve a balance between requirements such as high image quality, low sensitivity, an appropriate aperture size, miniaturization, and a desirable field of view.

SUMMARY

[0004] According to one aspect of the present disclosure, an image capture system lens assembly includes six lens elements. The six lens elements are, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, and a second lens element. lens, a fifth lens element and a sixth lens element. Each of the six lens elements has a surface on the object side facing toward the object side and a surface on the image side facing toward the image side.

[0005] The first lens element has a positive refractive power, the surface on the object side of the fifth lens element is concave in a paraxial region thereof, and the surface on the image side of the fifth lens element is convex in a paraxial region thereof. The surface on the image side of the sixth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has at least one inflection point.

[0006] When an axial distance between the surface on the image side of the sixth lens element and an imaging surface is BL, an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth lens element is TD, a relative center of the imaging system lens mount is Fno, a radius of curvature of the surface on the image side of the fifth lens element is R10, a radius of curvature of the surface on the side of the object of the sixth lens element is R11, a radius of curvature of the surface on the image side of the sixth lens element is R12, a focal length of the imaging system lens mount is f, a focal distance of the first element of lens is f1, and a focal length of the third lens element is f3, the following conditions are satisfied:

[0007] According to another aspect of the present disclosure, an image capture system lens assembly includes six lens elements. The six lens elements are, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, and a second lens element. lens, a fifth lens element and a sixth lens element. Each of the six lens elements has a surface on the object side facing toward the object side and a surface on the image side facing toward the image side.

[0008] The first lens element has a positive refractive power. The second lens element has negative refractive power. The surface on the object side of the fifth lens element is concave in a paraxial region thereof, and the surface on the image side of the fifth lens element is convex in a paraxial region thereof. The surface on the image side of the sixth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has an inflection point.

[0009] When an axial distance between the surface on the image side of the sixth lens element and an imaging surface is BL, an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth lens element is TD, a focal length of the imaging system lens mount is f, a focal length of the second lens element is f2, and a focal length of the fourth lens element is f4, a radius of curvature of the surface on the object side of the fifth lens element is R9, a radius of curvature of the surface on the image side of the fifth lens element is R10, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a central thickness of the third element between the fourth lens element and the fifth lens element is T45, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and a central thickness of the fifth lens element is CT5, the following conditions are satisfied:

[0010] According to another aspect of the present disclosure, an image capture system lens assembly includes six lens elements. The six lens elements are, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, and a second lens element. lens, a fifth lens element and a sixth lens element. Each of the six lens elements has a surface on the object side facing toward the object side and a surface on the image side facing toward the image side.

[0011] The first lens element has positive refractive power. The second lens element has negative refractive power. The surface on the image side of the fifth lens element is convex in a paraxial region thereof. The surface on the image side of the sixth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has at least one inflection point.

[0012] When an axial distance between the surface on the image side of the sixth lens element and an imaging surface is BL, an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth lens element is TD, a radius of curvature of the surface on the image side of the second lens element is R4, a radius of curvature of the surface on the object side of the fifth lens element is R9, a displacement in parallel with an axis optical geometric axis from an axial vertex of the surface on the object side of the fourth lens element to a position of maximum effective radius of the surface on the object side of the fourth lens element is SAG41, a displacement in parallel with the optical geometric axis a from an axial vertex of the surface on the image side of the fourth lens element to a position of maximum effective radius of the surface on the image side of the fourth lens element is SAG42, and a central thickness of the fourth lens element is CT4, the following conditions are satisfied:

[0013] According to another aspect of the present disclosure, an image capture unit includes one of the above-mentioned image capture system lens assemblies and an image sensor, wherein the image sensor is disposed on a surface of image of image capture system lens assembly.

[0014] According to another aspect of the present disclosure, an electronic device includes the image capture unit mentioned above.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The disclosure can be better understood by reading the following detailed description of the embodiments, with reference made to the accompanying drawings as follows:

[0016] Fig. 1 is a schematic view of an image capture unit in accordance with the first embodiment of the present disclosure;

[0017] Fig. 2 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the first embodiment;

[0018] Fig. 3 is a schematic view of an image capture unit in accordance with the second embodiment of the present disclosure;

[0019] Fig. 4 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the second embodiment;

[0020] Fig. 5 is a schematic view of an image capture unit in accordance with the third embodiment of the present disclosure;

[0021] Fig. 6 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the third embodiment;

[0022] Fig. 7 is a schematic view of an image capture unit in accordance with the fourth embodiment of the present disclosure;

[0023] Fig. 8 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the fourth embodiment;

[0024] Fig. 9 is a schematic view of an image capture unit in accordance with the fifth embodiment of the present disclosure;

[0025] Fig. 10 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the fifth embodiment;

[0026] Fig. 11 is a schematic view of an image capture unit in accordance with the sixth embodiment of the present disclosure;

[0027] Fig. 12 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the sixth embodiment;

[0028] Fig. 13 is a schematic view of an image capture unit in accordance with the seventh embodiment of the present disclosure;

[0029] Fig. 14 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the seventh embodiment;

[0030] Fig. 15 is a schematic view of an image capture unit in accordance with the eighth embodiment of the present disclosure;

[0031] Fig. 16 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the eighth embodiment;

[0032] Fig. 17 is a schematic view of an image capture unit in accordance with the ninth embodiment of the present disclosure;

[0033] Fig. 18 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the ninth embodiment;

[0034] Fig. 19 is a perspective view of an image capture unit in accordance with the tenth embodiment of the present disclosure;

[0035] Fig. 20 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the tenth embodiment;

[0036] Fig. 21 is a perspective view of an image capture unit in accordance with the eleventh embodiment of the present disclosure;

[0037] Fig. 22 is a perspective view of an electronic device in accordance with the twelfth embodiment of the present disclosure;

[0038] Fig. 23 is another perspective view of the electronic device in Fig. 22;

[0039] Fig. 24 is a block diagram of the electronic device in Fig. 22;

[0040] Fig. 25 is a perspective view of an electronic device in accordance with the thirteenth embodiment of the present disclosure;

[0041] Fig. 26 is a perspective view of an electronic device in accordance with the fourteenth embodiment of the present disclosure;

[0042] Fig. 27 is a perspective view of an electronic device in accordance with the fifteenth embodiment of the present disclosure;

[0043] Fig. 28 is another perspective view of the electronic device in Fig. 27;

[0044] Fig. 29 presents a schematic view of Y11, Y32, Y62, Yc62, ET34 and ImgH and two inflection points and two critical points of the surface on the image side of the sixth lens element according to the first embodiment of the present revelation;

[0045] Fig. 30 shows a schematic view of SAG41 and SAG42 and a part of the fourth lens element according to the first embodiment of the present disclosure;

[0046] Fig. 31 shows a schematic view of Dr1s and Drs2 and a part of the first lens element according to the first embodiment of the present disclosure;

[0047] Fig. 32 presents a schematic view of a configuration of a light bending element in an image capture system lens assembly in accordance with an embodiment of the present disclosure;

[0048] Fig. 33 presents a schematic view of another configuration of a light bending element in an image capture system lens assembly in accordance with an embodiment of the present disclosure;

[0049] Fig. 34 presents a schematic view of a configuration of two image bending elements in an image capture system lens assembly in accordance with an embodiment of the present disclosure; It is

[0050] Fig. 35 presents schematic views of an image capture system lens assembly when the image capture unit is in an extended state and the image capture system lens assembly when the image capture unit is in an extended state. image is in a state of retraction in accordance with the first embodiment of the present disclosure.

DETAILED DESCRIPTION

[0051] An imaging lens assembly includes six lens elements. The six lens elements are, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, and a second lens element. lens, a fifth lens element and a sixth lens element. Each of the six lens elements of the imaging system lens assembly has a surface on the object side facing toward the object side and a surface on the image side facing toward the image side.

[0052] The first lens element has positive refractive power. Therefore, this is favorable for reducing the size of the object side of the imaging system lens assembly.

[0053] The second lens element may have negative refractive power. Therefore, this is favorable for correcting aberrations, such as spherical aberration, generated due to size reduction. The surface on the object side of the second lens element may be convex in a paraxial region thereof. Therefore, this is conducive to correcting aberrations generated by the first lens element so as to improve image quality. The surface on the imaging side of the second lens element may be concave in a paraxial region thereof. Therefore, this is favorable for adjusting the surface shape of the second lens element so as to correct aberrations such as astigmatism.

[0054] The surface on the object side of the fifth lens element may be concave in a paraxial region thereof. Therefore, this is favorable for adjusting the shape of the surface on the object side of the fifth lens element so as to adjust the light path direction, thereby increasing the imaging surface. The surface on the image side of the fifth lens element is convex in a paraxial region thereof. Therefore, this is favorable to adjust the shape of the surface on the image side of the fifth lens element so as to collaborate with the surface on the object side to obtain the shape of the fifth lens element to reduce the molding difficulty and increase the yield. of manufacturing.

[0055] The surface on the image side of the sixth lens element is concave in a paraxial region thereof. Therefore, this is favorable for adjusting the shape of the surface on the image side of the sixth lens element so as to enhance the field curvature correction capability of the sixth lens element. The surface on the image side of the sixth lens element has at least one inflection point. Therefore, this is conducive to adjusting the incident light angle on the imaging surface, controlling the incident angle in the off-axis region to reduce vignetting at the image periphery, correct Petzval field curvature, and effectively reduce distortion. The surface on the image side of the sixth lens element may have at least one critical point in a region outside the geometric axis thereof. Therefore, this is conducive to increasing the shape variation of the lens element to reduce the angle of incident light, thereby preventing total reflection. Please refer to Fig. 29, which presents a schematic view of two inflection points P and two critical points C of the surface on the imaging side of the sixth lens element E6 according to the first embodiment of the present disclosure. The inflection points P of the surface on the image side of the sixth lens element E6 in Fig. 29 are illustrative only. Each of the lens elements in the various embodiments of the present disclosure may have one or more inflection points. In addition, the non-axial critical points C of the surface on the image side of the sixth lens element E6 in Fig. 29 are illustrative only. Each of the lens elements in the various embodiments of the present disclosure may have one or more non-axial critical points.

[0056] When an axial distance between the surface on the image side of the sixth lens element and an image surface is BL, and an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth lens element is TD, the following condition is satisfied: 0.65 < BL / TD < 1.00. Therefore, this is favorable for adjusting the ratio between the rear focal length and the tube length so as to reduce the tube length and increase the rear focal length. Furthermore, the following condition can also be satisfied: 0.67 < BL / TD < 0.95. Furthermore, the following condition can also be satisfied: 0.70 < BL / TD < 0.90.

[0057] When a relative center of the image capture system lens mount is Fno, the following condition can be satisfied: 1.35 < Fno < 2.30. Therefore, this is conducive to adjusting the size of the aperture limiter so as to obtain a balance between depth of field and image quality of the overall field of view. Furthermore, the following condition can also be satisfied: 1.61 < Fno < 2.15. Furthermore, the following condition can also be satisfied: 1.67 < Fno < 2.19. Furthermore, the following condition can also be satisfied: 1.67 < Fno < 2.05.

[0058] When a radius of curvature of the surface on the object side of the sixth lens element is R11, and a radius of curvature of the surface on the image side of the sixth lens element is R12, the following condition can be satisfied: -65 .00 < (R11 + R12) / (R11 - R12) < 1.80. Therefore, this is favorable for adjusting the surface shape and refractive power of the sixth lens element so as to maintain the rear focal length. Furthermore, the following condition can also be satisfied: -58.00 < (R11 + R12) / (R11 - R12) < 0.75.

[0059] When a focal length of the first lens element is f1, and a focal length of the third lens element is f3, the following condition can be satisfied: -0.90 < f1 / f3 < 2.00. Therefore, this is conducive to balancing the refractive power distribution of the first lens element and the third lens element so as to prevent excessive aberrations generated due to size reduction. Furthermore, the following condition can also be satisfied: -0.80 < f1 / f3 < 1.20. Furthermore, the following condition can also be satisfied: -0.65 < f1 / f3 < 1.10.

[0060] When a focal length of the imaging system lens mount is f, and a radius of curvature of the surface on the imaging side of the fifth lens element is R10, the following condition can be satisfied: -12.00 < f / R10 < -0.60. Therefore, this is favorable for adjusting the ratio between the focal length and the radius of curvature of the surface on the imaging side of the fifth lens element so as to reduce the manufacturing difficulty of the fifth lens element, thereby increasing the manufacturing yield. . Furthermore, the following condition can also be satisfied: -12.00 < f/R10 < -1.10. Furthermore, the following condition can also be satisfied: -10.00 < f / R10 < -1.20. Furthermore, the following condition can also be satisfied: -8.00 < f/R10 < -1.40.

[0061] When the focal length of the imaging system lens mount is f, a radius of curvature of the surface on the object side of the fifth lens element is R9, and the radius of curvature of the surface on the image side of the fifth lens element is R10, the following condition can be satisfied: -25.00 < f/R9 + f/R10 < -4.70. Therefore, this is favorable for adjusting the ratio between the focal length and the radii of curvature of the fifth lens element so as to maintain the curvature resistance of the fifth lens element and prevent excessive aberrations generated due to excessively large curvature. Furthermore, the following condition can be satisfied: -20.00 < f/R9 + f/R10 < -6.00. Furthermore, the following condition can also be satisfied: -18.00 < f/R9 + f/R10 < -7.00.

[0062] When an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and a central thickness of the fifth lens element is CT5, the following condition can be satisfied: 0 .70 < (T23 + CT3 + T34) / (CT4 + T45 + CT5) < 4.20. Therefore, this is conducive to increasing the structural strength of the medial part of the lens so as to increase overall stability and reduce sensitivity. Furthermore, the following condition can also be satisfied: 0.70 < (T23 + CT3 + T34) / (CT4 + T45 + CT5) < 3.70. Furthermore, the following condition can also be satisfied: 0.71 < (T23 + CT3 + T34) / (CT4 + T45 + CT5) < 3.50.

[0063] When a focal length of the second lens element is f2, and a focal length of the fourth lens element is f4, the following condition can be satisfied: 0.05 < |f2 / f4| < 0.95. Therefore, it is favorable to adjust the absolute value of the ratio between the focal length of the second lens element and the focal length of the fourth lens element so as to balance the refractive power distribution of the imaging system lens assembly, allowing the second lens element and the fourth lens element to work with each other to correct aberrations, such as spherical aberration. Furthermore, the following condition can also be satisfied: 0.05 < |f2 / f4| < 0.94. Furthermore, the following condition can also be satisfied: 0.06 < |f2 / f4| < 0.92.

[0064] When the radius of curvature of the surface on the image side of the second lens element is R4, and the radius of curvature of the surface on the object side of the fifth lens element is R9, the following condition can be satisfied: -0 .22 < (R4 + R9) / (R4 - R9) < 1.90. Therefore, this is favorable for adjusting the surface shape and refractive power of the second lens element and the fifth lens element so as to achieve a balance between reducing the total track length and increasing the ability to converge. Furthermore, the following condition can also be satisfied: -0.20 < (R4 + R9) / (R4 - R9) < 1.50. Furthermore, the following condition can also be satisfied: -0.18 < (R4 + R9) / (R4 - R9) < 1.20. Furthermore, the following condition can also be satisfied: - 0.17 < (R4 + R9) / (R4 - R9) < 0.90.

[0065] When a displacement in parallel with an optical geometric axis from an axial vertex of the surface on the object side of the fourth lens element to a position of maximum effective radius of the surface on the object side of the fourth lens element is SAG41 , a displacement in parallel with an optical geometric axis from an axial vertex of the surface on the image side of the fourth lens element to a maximum effective radius position of the surface on the image side of the fourth lens element is SAG42, and the central thickness of the fourth lens element is CT4, the following condition can be satisfied: - 8.00 < (SAG41 + SAG42) / CT4 < -0.40. Therefore, this is favorable for adjusting the peripheral surface shape of the fourth lens element so as to receive light rays from various angles. Furthermore, the following condition can also be satisfied: -7.00 < (SAG41 + SAG42) / CT4 < -0.41. Furthermore, the following condition can also be satisfied: -6.50 < (SAG41 + SAG42) / CT4 < -0.42. Please refer to Fig. 30, which presents a schematic view of SAG41 and SAG42 in accordance with the first embodiment of the present disclosure. When the direction from the axial vertex of a surface to the maximum effective radius position of the same surface is toward the image side of the imaging system lens mount, the offset value is positive; When the direction from the axial vertex of the surface to the maximum effective radius position of the same surface is toward the object side of the imaging system lens mount, the offset value is negative.

[0066] When a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, and a central thickness of the sixth lens element is CT6, the following condition can be satisfied: 4.80 < ( CT1 + CT6) / CT2 < 10.00. Therefore, it is favorable to adjust the ratio of the central thickness of the front side and side lens elements with the central thickness of the lens element in the middle part so as to obtain a balance between manufacturing yield and image quality of the area. central. Furthermore, the following condition can also be satisfied: 5.00 < (CT1 + CT6) / CT2 < 9.50.

[0067] When the radius of curvature of the surface on the image side of the second lens element is R4, and a maximum image height of the image capture system lens mount (which may be half a diagonal length of a effective photosensitive area of an image sensor) is ImgH, the following condition can be satisfied: 0.10 < R4 / ImgH < 3.10. Therefore, this is favorable for adjusting the ratio between the radius of curvature of the surface on the imaging side of the second lens element and the size of the imaging surface so as to maintain the surface shape of the second lens element and increase the surface of image. Furthermore, the following condition can also be satisfied: 0.20 < R4 / ImgH < 2.70. Furthermore, the following condition can also be satisfied: 0.20 < R4 / ImgH < 2.70. Furthermore, the following condition can also be satisfied: 0.30 < R4 / ImgH < 2.00. Please refer to Fig. 29, which presents a schematic view of ImgH in accordance with the first embodiment of the present disclosure.

[0068] According to the present disclosure, the image capture system lens assembly further includes an aperture limiter. When a sum of axial distances between each of all adjacent lens elements of the imaging system lens assembly is ∑AT, and an axial distance between the aperture limiter and the surface on the imaging side of the sixth imaging element lens is SD, the following condition can be satisfied: 0.25 < ∑AT / SD < 0.65. Therefore, this is conducive to achieving better space utilization of the imaging system lens mount so as to prevent interference between lens elements due to excessively small distance between adjacent lens elements and prevent undesirable device portability due to an excessively large distance between adjacent lens elements. Furthermore, the following condition can also be satisfied: 0.30 <∑AT / SD < 0.55.

[0069] When half of a maximum field of view of the imaging system lens assembly is HFOV, the following condition can be satisfied: 13.00 degrees < HFOV < 33.0 degrees. Therefore, this is conducive to adjusting the field of view so as to prevent aberrations, such as distortion, generated due to an excessively large field of view. Furthermore, the following condition can also be satisfied: 14.0 degrees < HFOV < 29.0 degrees. Furthermore, the following condition can also be satisfied: 15.5 degrees < HFOV < 28.0 degrees. Furthermore, the following condition can also be satisfied: 17.0 degrees < HFOV < 27.0 degrees.

[0070] At least one lens element of the image capture system lens assembly may be manufactured from plastic material. Therefore, this is conducive to reducing manufacturing costs and increasing design flexibility so as to improve image quality and increase mass production.

[0071] When a refractive index of the second lens element is N2, and a refractive index of the sixth lens element is N6, the following condition can be satisfied: 0.95 < N2 / N6 < 1.25. Therefore, this is favorable for adjusting the ratio between the focal length of the second lens element and the focal length of the sixth lens element so as to ensure sufficient refractive power of the sixth lens element, thereby correcting various aberrations.

[0072] When a maximum effective radius of the surface on the object side of the first lens element is Y11, and a maximum effective radius of the surface on the image side of the sixth lens element is Y62, the following condition can be satisfied: 0, 70 < Y11 / Y 62 < 1.30. Therefore, adjusting the ratio between the optical effective rays of the first lens element and the sixth lens element is favorable to balance the field of view, size arrangement and imaging surface area. Furthermore, the following condition can also be satisfied: 0.80 < Y11 / Y62 < 1.15. Please refer to Fig. 29, which presents a schematic view of Y11 and Y62 in accordance with the first embodiment of the present disclosure.

[0073] When the focal length of the first lens element is f1, and a composite focal length of the second lens element, the third lens element and the fourth lens element is f234, the following condition can be satisfied: -5, 00 < f1 / f234 < -0.03. Therefore, this is favorable for balancing the distribution of refractive power on the object side of the imaging system lens mount so as to correct aberrations. Furthermore, the following condition can also be satisfied: - 3.00 < f1 / f234 < -0.10.

[0074] When the focal length of the imaging system lens mount is f, and the maximum image height of the imaging system lens mount is ImgH, the following condition can be satisfied: 1.51 < f/ImgH < 3.48. Therefore, this is conducive to adjusting the size of the imaging surface so as to increase the light receiving area. Furthermore, the following condition can also be satisfied: 2.05 < f / ImgH < 2.95.

[0075] When the distance parallel to the optical geometric axis between a position of maximum effective radius of the surface on the image side of the third lens element and the position of maximum effective radius of the surface on the object side of the fourth lens element is ET34, and the axial distance between the third lens element and the fourth lens element is T34, the following condition can be satisfied: 0.05 < ET34 / T34 < 1.20. Therefore, this is favorable for adjusting the central thickness and peripheral thickness of an overhead lens between the third lens element and the fourth lens element so as to achieve a balance between reducing mounting difficulty and reducing stray light in the lens elements. Please refer to Fig. 29, which presents a schematic view of ET34 in accordance with the first embodiment of the present disclosure. It is observed that an air lens is provided in a space between two adjacent physical lens elements, the air between the two adjacent physical lens elements acts as the transmission medium, and two adjacent lens surfaces of the two adjacent physical lens elements act as as refractive interfaces to refract light and correct image of the periphery.

[0076] When the maximum effective radius of the surface on the object side of the first lens element is Y11, and a maximum effective radius of the surface on the image side of the third lens element is Y32, the following condition can be satisfied: 1, 10 < Y11 / Y32 < 2.50. Therefore, this is favorable for adjusting the ratio between the effective rays of the first lens element and the third lens element so as to achieve a balance between reducing size, increasing image height and reducing mechanical design difficulty. Furthermore, the following condition can also be satisfied: 1.18 < Y11 / Y32 < 2.10. Please refer to Fig. 29, which presents a schematic view of Y11 and Y32 in accordance with the first embodiment of the present disclosure.

[0077] A central thickness of the first lens element may be a maximum between central thicknesses of all lens elements of the imaging system lens assembly. Therefore, this is favorable for adjusting the significant light convergence capability provided by the first lens element so as to reduce the size of the imaging system lens assembly, thereby achieving compactness.

[0078] When the central thickness of the first lens element is CT1, and the central thickness of the fifth lens element is CT5, the following condition can be satisfied: 1.30 < CT1 / CT5 < 7.20. Therefore, adjusting the ratio between the central thickness of the first lens element and the central thickness of the fifth lens element is favorable for the first lens element to provide significant light convergence capability of the imaging system lens assembly. Furthermore, the following condition can also be satisfied: 1.72 < CT1 / CT5 < 7.00.

[0079] When an Abbe number of the fourth lens element is V4, and an Abbe number of the fifth lens element is V5, the following condition can be satisfied: 0.65 < V5 / V4 < 3.00. Therefore, this is favorable for adjusting the material arrangement of the fourth lens element and the fifth lens element so as to balance chromatic aberration and astigmatism. Furthermore, the following condition can also be satisfied: 0.68 < V5 / V4 < 2.30.

[0080] When a radius of curvature of the surface on the image side of the third lens element is R6, and a radius of curvature of the surface on the object side of the fourth lens element is R7, the following condition can be satisfied: -40 , 00 < (R6 - R7) / (R6 + R7) < 0.10. Therefore, this is favorable for adjusting the surface shape of the aerial lens between the third lens element and the fourth lens element so as to reduce off-axis astigmatism. Furthermore, the following condition can also be satisfied: -35.00 < (R6 - R7) / (R6 + R7) < 0.05. Furthermore, the following condition can also be satisfied: -30.00 < (R6 - R7) / (R6 + R7) < 0.033.

[0081] When the focal length of the imaging system lens mount is f, and the focal length of the second lens element is f2, the following condition can be satisfied: -3.00 < f / f2 < -0 .60. Therefore, this is favorable for adjusting the refractive power of the second lens element so as to reduce the effective radius of the middle part of the imaging system lens assembly.

[0082] When a refractive index of the first lens element is N1, the refractive index of the second lens element is N2, and a refractive index of the fifth lens element is N5, the following condition can be satisfied: 1.90 < ( N1 + N2) / N5 < 2.50. Therefore, this is favorable for balancing material arrangement of lens elements of the lens assembly of imaging system so as to optimize light refraction ability of lens elements.

[0083] When an axial displacement from the surface on the object side of the first lens element to the aperture limiter is Dr1s, and an axial displacement from the aperture limiter to the surface on the image side of the first lens element is Dsr2, the following condition can be satisfied: 0.00 < Dr1s / Dsr2. Therefore, this is favorable for adjusting the relative position between the aperture limiter and the first lens element so as to reduce the influence of temperature variation on the peripheral relative illuminance. Furthermore, the following condition can also be satisfied: 1.00 < Dr1s / Dsr2. Please refer to Fig. 31, which presents a schematic view of Dr1s and Dsr2 in accordance with the first embodiment of the present disclosure. When the direction from one element to another element is toward the imaging side of the imaging system lens assembly, the offset value is positive; when the direction from one element to another element is toward the object side of the imaging system lens mount, the offset value is negative.

[0084] When an axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, and an axial distance between the fifth lens element and the sixth lens element is T56, the following condition can be satisfied: 0.00 < (T12 + T45 + T56) / (T23 + T24) < 1.30. Therefore, adjusting the proportion of distances between each of all adjacent elements so as to balance the space arrangement of the lens elements is conducive to achieving a balance between reducing manufacturing errors and reducing temperature change effects. Furthermore, the following condition can also be satisfied: 0.03 < (T12 + T45 + T56) / (T23 + T34) < 1.20.

[0085] When a radius of curvature of the surface on the object side of the third lens element is R5, and the radius of curvature of the surface on the image side of the third lens element is R6, the following condition can be satisfied: -7 .00 < R5 / R6 < 3.30. Therefore, this is favorable for adjusting the surface shape of the third lens element so as to reduce optically effective diameters of the lens elements in the middle part of the image capture system lens assembly. Furthermore, the following condition can also be satisfied: -3.50 < R5 / R6 < 3.00.

[0086] When a focal length composed of the first lens element, the second lens element and the third lens element is f123, and a focal length composed of the fourth lens element, the fifth lens element and the sixth lens element is f456, the following condition can be satisfied: -0.60 < f123 / f456 < 2.80. Therefore, this is conducive to adjusting the refractive power distribution of the lens elements at the front and rear of the imaging system lens assembly so as to maintain overall stability. Furthermore, the following condition can also be satisfied: -0.50 < f123 / f456 < 2.50.

[0087] When a vertical distance between a critical point on the surface on the image side of the sixth lens element and the optical geometric axis is Yc62, and the maximum effective radius of the surface on the image side of the sixth lens element is Y62, the surface on the image side of the sixth lens element may have at least one critical point in the off-axis region thereof satisfying the following condition: 0.15 < Yc62 / Y62 < 0.70. Therefore, adjusting the position of the surface critical point(s) on the imaging side of the sixth lens element so as to adjust the angle of light incident on the imaging surface is favorable for maintaining image quality at various object distances. Please refer to Fig. 29, which presents a schematic view of Yc62 and Y62 in accordance with the first embodiment of the present disclosure.

[0088] According to the present disclosure, the characteristics and conditions mentioned above can be used in various combinations in order to achieve corresponding effects.

[0089] According to the present disclosure, the lens elements of the image capture system lens assembly may be manufactured from vitreous or plastic material. When the lens elements are manufactured from vitreous material, the refractive power distribution of the image capture system lens assembly can be more flexible, and the influence on image capture caused by the temperature change of the external environment can be reduced. The vitreous lens element can be manufactured by polishing or molding. When lens elements are manufactured from plastic material, manufacturing costs can be effectively reduced. Furthermore, surfaces of each lens element may be arranged to be spherical or aspherical. Spherical lens elements are simple to manufacture. The aspherical lens element design allows for more control variables to eliminate lens aberrations and reduce the required number of lens elements, and the total track length of the imaging system lens mount can therefore be effectively shortened. . Additionally, aspherical surfaces can be formed by plastic injection molding or glass molding.

[0090] According to the present disclosure, when a lens surface is aspherical, this means that the lens surface has an aspherical shape throughout its optically effective area, or in a portion(s) thereof.

[0091] In accordance with the present disclosure, the material of the one or more of the lens elements may optionally include an additive that generates light absorption and interference effects and alters the transmittance of lens elements over a specific range of lengths. wave for a reduction in stray light or unwanted color deviation. For example, the additive may optionally remove light in the wavelength range of 600 nm to 800 nm to reduce excessive red light and/or near-infrared light; or can optionally remove light in the 350 nm to 450 nm wavelength range to reduce excess blue light and/or near-ultraviolet light interfering with the final image. The additive may be homogeneously mixed with a plastic material to be used in manufacturing a lens element with material mixed by injection molding. Furthermore, the additive can be placed around the lens surfaces to provide the effects mentioned above.

[0092] According to the present disclosure, each of a surface on the object side and a surface on the image side has a paraxial region and a region off the geometric axis. The paraxial region refers to the region of the surface where light rays travel close to the optical geometric axis, and the region outside the geometric axis refers to the region of the surface far from the paraxial region. Particularly, unless otherwise stated, when the lens element has a convex surface, this indicates that the surface is convex in the paraxial region thereof; When the lens element has a concave surface, this indicates that the surface is concave in the paraxial region thereof. Furthermore, when a region of refractive power or focus of a lens element is not defined, this indicates that the region of refractive power or focus of the lens element is in the paraxial region thereof.

[0093] According to the present disclosure, an inflection point is a point on the surface of the lens element at which the surface changes from concave to convex, or vice versa. A critical point is a non-axial point on the lens surface where its tangent is perpendicular to the optical geometric axis.

[0094] According to the present disclosure, the imaging surface of the image capture system lens assembly based on the corresponding image sensor may be flat or curved, especially a curved surface being concave facing toward the side of the object of image capture system lens assembly.

[0095] In accordance with the present disclosure, an image correction unit, such as a field flattener, may optionally be disposed between the lens element closest to the image side of the image capture system lens assembly at the along the optical path and imaging surface to correct aberrations such as field curvature. The optical properties of the image correction unit, such as curvature, thickness, refractive index, position and surface shape (convex or concave surface with spherical, aspherical, diffractive or Fresnel types), can be adjusted according to the project of the image capture unit. In general, a preferable image correction unit, for example, is a thin transparent element having a concave surface on the object side and a flat surface on the image side, and the thin transparent element is arranged close to the imaging surface.

[0096] In accordance with the present disclosure, at least one light bending element, such as a prism or a mirror, may optionally be disposed between an imaged object and an imaging surface in the imaging optical path, so that the imaging system lens assembly can be more flexible in space arrangement and therefore the dimensions of an electronic device are not restricted by the total track length of the imaging system lens assembly. Specifically, please refer to Fig. 32 and Fig. 33. Fig. 32 presents a schematic view of a configuration of a light bending element in an imaging system lens assembly in accordance with a embodiment of the present disclosure, and Fig. 33 presents a schematic view of another configuration of a light bending element in an image capture system lens assembly in accordance with an embodiment of the present disclosure. In Fig. 32 and Fig. 33, the imaging system lens assembly may have, in order from an imaged object (not shown in the figures) to an IMG imaging surface along a path optical axis, a first optical axis OA1, a light bending element LF and a second optical axis OA2. The light bending element LF may be disposed between the imaged object and a group of LG lenses of the image capture system lens assembly as shown in Fig. 32 or disposed between a group of LG lenses of the lens assembly of imaging system and the IMG imaging surface as shown in Fig. 33. Additionally, please refer to Fig. 34, which presents a schematic view of a configuration of two light bending elements in a image capture system lens assembly in accordance with an embodiment of the present disclosure. In Fig. 34, the image capture system lens assembly may have, in order from an imaged object (not shown in the figure) to an IMG imaging surface along an optical path, a first optical geometric axis OA1, a first light bending element LF1, a second optical geometric axis OA2, a second light bending element LF2 and a third optical geometric axis OA3. The first light bending element LF1 is disposed between the imaged object and a group of LG lenses of the imaging system lens assembly, the second light bending element LF2 is disposed between the group of LG lenses of the image capture system lens assembly and the IMG imaging surface, and the light path direction in the first optical axis OA1 may be the same direction as the light path direction of the third optical axis OA3 as shown in Fig. 34. The image capture system lens assembly may optionally be provided with three or more light bending elements, and the present disclosure is not limited to the type, quantity and position of the light bending elements of the embodiments. revealed in the figures mentioned above.

[0097] In accordance with the present disclosure, the image capture system lens assembly may include at least one limiter, such as an aperture limiter, a bright light limiter or a field limiter. Said strong light limiter or said field limiter is established to eliminate stray light and thus improve image quality thereof.

[0098] According to the present disclosure, an opening limiter can be configured as a front limiter or a median limiter. A front limiter disposed between an imaged object and the first lens element may provide a greater distance between an exit pupil of the imaging system lens assembly and the imaging surface to produce a telecentric effect, and thereby improve the image perception efficiency of an image sensor (e.g. CCD or CMOS). A median stop disposed between the first lens element and the imaging surface is conducive to increasing the viewing angle of the imaging system lens assembly and thereby providing a wider field of view therefor.

[0099] According to the present disclosure, the image capture system lens assembly may include an aperture control unit. The aperture control unit can be a mechanical component or a light modulator, which can control the size and shape of the aperture through electricity or electrical signals. The mechanical component may include a movable member, such as a blade assembly or a light shield. The light modulator may include a shielding element, such as a filter, an electrochromic material, or a liquid crystal layer. The aperture control unit controls the amount of incident light or exposure time to enhance image quality adjustability. In addition, the aperture control unit may be the aperture limiter of the present disclosure, which changes the relative center to obtain different image effects, such as depth of field or lens speed.

[00100] In accordance with the present disclosure, the imaging lens assembly may include one or more optical elements to limit the form of light passing through the imaging system lens assembly. Each optical element may be, but is not limited to, a filter, a polarizer, etc., and each optical element may be, but is not limited to, a one-piece element, a composite component, a thin film , etc. The optical element may be located on the front side or the rear side of the imaging system lens assembly or between any two adjacent lens elements so as to allow light in a specific shape to pass through, thereby meeting the requirements of the application.

[00101] In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation.

First Realization

[00102] Fig. 1 is a schematic view of an image capture unit in accordance with the first embodiment of the present disclosure. Fig. 2 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the first embodiment. In Fig. 1, the image capture unit 1 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a limiter S1, a fourth lens element E4, a limiter S2, a fifth lens element E5, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00103] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The first lens element E1 is manufactured from glassy material and has the surface on the object side and the surface on the image side both being aspherical.

[00104] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00105] The third E3 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00106] The fourth lens element E4 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00107] The fifth E5 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00108] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the object side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has two critical points in a region outside its geometric axis.

[00109] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00110] The equation of the aspheric surface profiles of the above-mentioned lens elements of the first embodiment is expressed as follows: i Y is the vertical distance from the point on the aspheric surface to the optical geometric axis; R is the radius of curvature; k is the conic coefficient; and Ai is the ith aspherical coefficient, and in embodiments, i may be, but is not limited to, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 and 26.

[00111] In the image capture system lens assembly of the image capture unit 1 according to the first embodiment, when a focal length of the image capture system lens assembly is f, a relative center of the image capture system assembly imaging system lens is Fno, and half of a maximum field of view of the imaging system lens mount is HFOV, these parameters have the following values: f = 12.22 millimeters (mm), Fno = 1.85, HFOV = 23.2 degrees (degrees).

[00112] When an axial distance between the surface on the image side of the sixth lens element E6 and the IMG imaging surface is BL, and an axial distance between the surface on the object side of the first lens element E1 and the surface on the image side of the sixth lens element E6 is TD, the following condition is satisfied: BL / TD = 0.83.

[00113] When the focal length of the imaging system lens mount is f, and the maximum image height of the imaging system lens mount is ImgH, the following condition can be satisfied: f/ ImgH = 2.27.

[00114] When a focal length of the first lens element E1 is f1, and a composite focal length of the second lens element E2, the third lens element E3 and the fourth lens element E4 is f234, the following condition is satisfied: f1 / f234 = -0.44.

[00115] When the focal length of the first lens element E1 is f1, and a focal length of the third lens element E3 is f3, the following condition is satisfied: f1 / f3 = -0.44.

[00116] When a focal length composed of the first lens element E1, the second lens element E2 and the third lens element E3 is f123, and a focal length composed of the fourth lens element E4, the fifth lens element E5 and of the sixth lens element E6 is f456, the following condition is satisfied: f123 / f456 = 1.37.

[00117] When the focal length of the image capture system lens mount is f, and a focal length of the second lens element E2 is f2, the following condition is satisfied: f / f2 = -0.99.

[00118] When the focal length of the second lens element E2 is f2, and a focal length of the fourth lens element E4 is f4, the following condition is satisfied: |f2 / f4| = 0.88.

[00119] When the focal length of the imaging system lens mount is f, and a radius of curvature of the surface on the imaging side of the fifth lens element E5 is R10, the following condition is satisfied: f / R10 = -4.77.

[00120] When the focal length of the imaging system lens mount is f, a radius of curvature of the surface on the object side of the fifth lens element E5 is R9, and the radius of curvature of the surface on the image side of the fifth lens element E5 is R10, the following condition is satisfied: f/R9 + f/R10 = -11.40.

[00121] When a radius of curvature of the surface on the image side of the second lens element E2 is R4, and the maximum image height of the image capture system lens mount is ImgH, the following condition is satisfied: R4 / ImgH = 0.50.

[00122] When the radius of curvature of the surface on the image side of the second lens element E2 is R4, and the radius of curvature of the surface on the object side of the fifth lens element E5 is R9, the following condition is satisfied: ( R4 + R9) / (R4 - R9) = 0.18.

[00123] When a radius of curvature of the surface on the image side of the third lens element E3 is R6, and a radius of curvature of the surface on the object side of the fourth lens element E4 is R7, the following condition is satisfied: ( R6 - R7) / (R6 + R7) = -0.06.

[00124] When a radius of curvature of the surface on the object side of the sixth lens element E6 is R11, and a radius of curvature of the surface on the image side of the sixth lens element E6 is R12, the following condition is satisfied: ( R11 + R12) / (R11 - R12) = -4.20.

[00125] When a radius of curvature of the surface on the object side of the third lens element E3 is R5, and the radius of curvature of the surface on the image side of the third E3 is R6, the following condition is satisfied: R5 / R6 = -2.51.

[00126] When a central thickness of the first lens element E1 is CT1, and a central thickness of the fifth lens element E5 is CT5, the following condition is satisfied: CT1 / CT5 = 5.07.

[00127] When a central thickness of the first lens element E1 is CT1, a central thickness of the second lens element E2 is CT2, and a central thickness of the sixth lens element E6 is CT6, the following condition is satisfied: (CT1 + CT6) / CT2 = 8.84.

[00128] When an axial distance between the first lens element E1 and the second lens element E2 is T12, and an axial distance between the second lens element E2 and the third lens element E3 is T23, an axial distance between the third lens element E3 and the fourth lens element E4 is T34, an axial distance between the fourth lens element E4 and the fifth lens element E5 is T45, and an axial distance between the fifth lens element E5 and the sixth element of lens E6 is T56, the following condition is satisfied: (T12 + T45 + T56) / (T23 + T34) = 0.31. In this embodiment, an axial distance between two adjacent lens elements is a distance in a paraxial region between two adjacent lens surfaces of the two adjacent lens elements.

[00129] When an axial distance between the second lens element E2 and the third lens element E3 is T23, the axial distance between the third lens element E3 and the fourth lens element E4 is T34, the axial distance between the fourth lens element E4 and the fifth lens element E5 is T45, a central thickness of the third lens element E3 is CT3, a central thickness of the fourth lens element E4 is CT4, and the central thickness of the fifth lens element E5 is CT5 , the following condition is satisfied: (T23 + CT3 + T34) / (CT4 + T45 + CT5) = 1.23.

[00130] When a sum of axial distances between each of all adjacent lens elements of the imaging system lens assembly is ∑AT, and an axial distance between the aperture limiter ST and the surface on the image side of the sixth lens element E6 is SD, the following condition is satisfied: ∑ST / SD = 0.42. In this embodiment, ∑AT is the sum of the axial distances between the first lens element E1 and the second lens element E2, the second lens element E2 and the third lens element E3, the third lens element E3 and the fourth element lens element E4, the fourth lens element E4 and the fifth lens element E5, and the fifth lens element E5 and the sixth lens element E6.

[00131] When a maximum effective radius of the surface on the object side of the first lens element E1 is Y11, and a maximum effective radius of the surface on the image side of the third lens element E3 is Y32, the following condition is satisfied: Y11 / Y32 = 1.51.

[00132] When a maximum effective radius of the surface on the object side of the first lens element E1 is Y11, and a maximum effective radius of the surface on the image side of the sixth lens element E6 is Y62, the following condition is satisfied: Y11 / Y62 = 0.98.

[00133] When a vertical distance between a critical point on the surface on the image side of the sixth lens element E6 and the optical geometric axis is Yc62, and the maximum effective radius of the surface on the image side of the sixth lens element E6 is Y62 , the two surface critical points on the image side of the sixth lens element E6 respectively satisfy the following conditions: Yc62 = 1.50 mm; Yc62 = 3.35mm; Yc62 / Y62 = 0.45; and Yc62 / Y62 = 0.997.

[00134] When a displacement in parallel with the optical geometric axis from an axial vertex of the surface on the object side of the fourth lens element E4 to a position of maximum effective radius of the surface on the object side of the fourth lens element E4 is SAG41, a displacement in parallel with the optical geometric axis from an axial vertex of the surface on the image side of the fourth lens element E4 to a position of maximum effective radius of the surface on the image side of the fourth lens element E4 is SAG42, and the central thickness of the fourth lens element E4 is CT4, the following condition is satisfied: (SAG41 + SAG42) / CT4 = -0.76. In this embodiment, the directions of SAG41 and SAG42 are toward the object side of the imaging system lens mount, so that the values of SAG41 and SAG42 are negative.

[00135] When a distance parallel to the optical geometric axis between a position of maximum effective radius of the surface on the image side of the third lens element E3 and the position of maximum effective radius of the surface on the object side of the fourth lens element E4 is ET34, and the axial distance between the third lens element E3 and the fourth lens element E4 is T34, the following condition is satisfied: ET34 / T34 = 0.58.

[00136] When an axial displacement from the surface on the object side of the first lens element E1 to the aperture limiter ST is Dr1s, and an axial displacement from the aperture limiter ST to the surface on the image side of the first lens element E1 is Dsr2, the following condition is satisfied: Dr1s / Dsr2 = 5.37. In this embodiment, the directions of Dr1s and Dsr2 are toward the image side of the imaging system lens assembly, so that the values of Dr1s and Dsr2 are positive.

[00137] When a refractive index of the first lens element E1 is N1, a refractive index of the second lens element E2 is N2, and a refractive index of the fifth lens element E5 is N5, the following condition is satisfied: (N1 + N2 ) / N5 = 2.17.

[00138] When a refractive index of the second lens element E2 is N2, and a refractive index of the sixth lens element E6 is N6, the following condition is satisfied: N2 / N6 = 1.08.

[00139] When an Abbe number of the fourth lens element E4 is V4, and an Abbe number of the fifth lens element E5 is V5, the following condition is satisfied: V5 / V4 = 1.32.

[00140] The detailed optical data of the first embodiment is presented in Table 1A and the aspherical surface data is presented in Table 1B below.

[00141] In table 1A, the radius of curvature, thickness and focal distance are presented in millimeters (mm). Surface numbers 0 to 18 represent surfaces sequentially arranged from the object side to the image side along the optical geometric axis. In Table 1B, k represents the conical coefficient of the aspheric surface profile equation. A4 to A26 represent aspherical coefficients ranging from the fourth order to the twenty-sixth order. The tables presented below for each embodiment are the schematic parameter and corresponding aberration curves, and the definitions of the tables are the same as in Table 1A and Table 1B of the first embodiment. Therefore, an explanation in this regard will not be provided again.

Second Concretization

[00142] Fig. 3 is a schematic view of an image capture unit in accordance with the second embodiment of the present disclosure. Fig. 4 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the second embodiment. In Fig. 3, the image capture unit 2 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a stopper S1, a fourth lens element E4, a stopper S2, a fifth lens element E5, a sixth lens element E6, a stopper S3, a filter E7 and a surface of IMG image. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00143] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The first lens element E1 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00144] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00145] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00146] The fourth lens element E4 with positive refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00147] The fifth E5 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00148] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00149] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00150] Detailed optical data of the second embodiment is presented in Table 2A and the aspherical surface data is presented in Table 2B below.

[00151] In the second embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 2C below are the same as those stated in the first embodiment with corresponding values for the second embodiment, so an explanation in this regard will not be provided again.

[00152] Furthermore, these parameters can be calculated from Table 2A and Table 2B as the following values and satisfy the following conditions:

Third Achievement

[00153] Fig. 5 is a schematic view of an image capture unit in accordance with the third embodiment of the present disclosure. Fig. 6 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the third embodiment. In Fig. 5, the image capture unit 3 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a limiter S1, a fourth lens element E4, a limiter S2, a fifth lens element E5, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00154] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The first lens element E1 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00155] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00156] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00157] The fourth lens element E4 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00158] The fifth lens element E5 with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00159] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00160] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00161] The detailed optical data of the third embodiment is presented in Table 3A and the aspherical surface data is presented in Table 3B below.

[00162] In the third embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 3C below are the same as those stated in the first embodiment with corresponding values for the third embodiment, so an explanation in this regard will not be provided again.

[00163] Furthermore, these parameters can be calculated from Table 3A and Table 3B as the following values and satisfy the following conditions:

Fourth Achievement

[00164] Fig. 7 is a schematic view of an image capture unit in accordance with the fourth embodiment of the present disclosure. Fig. 8 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the fourth embodiment. In Fig. 7, the image capture unit 4 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a limiter S1, a fourth lens element E4, a limiter S2, a fifth lens element E5, a limiter S3, a sixth lens element E6, a filter E7 and a surface of IMG image. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00165] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The first lens element E1 is manufactured from glassy material and has the surface on the object side and the surface on the image side both being aspherical.

[00166] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00167] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00168] The fourth lens element E4 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00169] The fifth lens element E5 with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00170] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00171] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00172] The detailed optical data of the fourth embodiment is presented in Table 4A and the aspheric surface data is presented in Table 4B below.

[00173] In the fourth embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 4C below are the same as those stated in the first embodiment with corresponding values for the fourth embodiment, so an explanation in this regard will not be provided again.

[00174] Furthermore, these parameters can be calculated from Table 4A and Table 4B as the following values and satisfy the following conditions:

Fifth Achievement

[00175] Fig. 9 is a schematic view of an image capture unit in accordance with the fifth embodiment of the present disclosure. Fig. 10 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the fifth embodiment. In Fig. 9, the image capture unit 5 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a fourth lens element E4, a limiter S1, a fifth lens element E5, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00176] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The first lens element E1 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00177] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00178] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00179] The fourth E4 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. In addition, the surface on the image side of the third lens element E3 and the surface on the object side of the fourth lens element E4 are cemented together.

[00180] The fifth E5 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00181] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has an inflection point. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00182] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00183] The detailed optical data of the fifth embodiment is presented in Table 5A and the aspheric surface data is presented in Table 5B below.

[00184] In the fifth embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 5C below are the same as those stated in the first embodiment with corresponding values for the fifth embodiment, so that an explanation in this regard will not be provided again.

[00185] Furthermore, these parameters can be calculated from Table 5A and Table 5B as the following values and satisfy the following conditions:

Sixth Achievement

[00186] Fig. 11 is a schematic view of an image capture unit in accordance with the sixth embodiment of the present disclosure. Fig. 12 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the sixth embodiment. In Fig. 11, the image capture unit 6 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a limiter S1, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00187] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The first lens element E1 is manufactured from glassy material and has the surface on the object side and the surface on the image side both being aspherical.

[00188] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00189] The third E3 lens element with positive refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00190] The fourth lens element E4 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00191] The fifth E5 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00192] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00193] The E7 filter is made of vitreous material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00194] Detailed optical data of the sixth embodiment is presented in Table 6A and the aspheric surface data is presented in Table 6B below.

[00195] In the sixth embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 6C below are the same as those stated in the first embodiment with corresponding values for the sixth embodiment, so that an explanation in this regard will not be provided again.

[00196] Furthermore, these parameters can be calculated from Table 6A and Table 6B as the following values and satisfy the following conditions:

Seventh Achievement

[00197] Fig. 13 is a schematic view of an image capture unit in accordance with the seventh embodiment of the present disclosure. Fig. 14 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the seventh embodiment. In Fig. 13, the image capture unit 7 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a fourth lens element E4, a limiter S1, a fifth lens element E5, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00198] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The first lens element E1 is manufactured from glassy material and has the surface on the object side and the surface on the image side both being aspherical.

[00199] The second lens element E2 with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00200] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00201] The fourth lens element E4 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00202] The fifth E5 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00203] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00204] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00205] The detailed optical data of the seventh embodiment is presented in Table 7A and the aspheric surface data is presented in Table 7B below.

[00206] In the seventh embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 7C below are the same as those stated in the first embodiment with corresponding values for the seventh embodiment, so that an explanation in this regard will not be provided again.

[00207] Furthermore, these parameters can be calculated from Table 7A and Table 7B as the following values and satisfy the following conditions:

Eighth Achievement

[00208] Fig. 15 is a schematic view of an image capture unit in accordance with the eighth embodiment of the present disclosure. Fig. 16 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the eighth embodiment. In Fig. 15, the image capture unit 8 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a limiter S1, a fourth lens element E4, a fifth lens element E5, a limiter S2, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00209] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00210] The second E2 lens element with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00211] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00212] The fourth lens element E4 with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00213] The fifth lens element E5 with positive refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00214] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00215] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00216] Detailed optical data of the eighth embodiment is presented in Table 8A and aspheric surface data is presented in Table 8B below.

[00217] In the eighth embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 8C below are the same as those stated in the first embodiment with corresponding values for the eighth embodiment, so an explanation in this regard will not be provided again.

[00218] Furthermore, these parameters can be calculated from Table 8A and Table 8B as the following values and satisfy the following conditions:

Ninth Achievement

[00219] Fig. 17 is a schematic view of an image capture unit in accordance with the ninth embodiment of the present disclosure. Fig. 18 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the ninth embodiment. In Fig. 17, the image capture unit 9 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, an ST aperture limiter, a first lens element E1, a second element lens element E2, a third lens element E3, a limiter S1, a fourth lens element E4, a limiter S2, a fifth lens element E5, a sixth lens element E6, a filter E7 and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00220] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The first lens element E1 is manufactured from glassy material and has the surface on the object side and the surface on the image side both being aspherical.

[00221] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00222] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00223] The fourth E4 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00224] The fifth lens element E5 with positive refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the imaging side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00225] The sixth E6 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00226] The E7 filter is made of glassy material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00227] Detailed optical data of the ninth embodiment is presented in Table 9A and aspheric surface data is presented in Table 9B below.

[00228] In the ninth embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 9C below are the same as those stated in the first embodiment with corresponding values for the ninth embodiment, so that an explanation in this regard will not be provided again.

[00229] Furthermore, these parameters can be calculated from Table 9A and Table 9B as the following values and satisfy the following conditions:

Tenth Achievement

[00230] Fig. 19 is a schematic view of an image capture unit in accordance with the tenth embodiment of the present disclosure. Fig. 20 presents, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the tenth embodiment. In Fig. 19, the image capture unit 10 includes the image capture system lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The imaging system lens assembly includes, in order from an object side to an imaging side along an optical axis, a first lens element E1, a second lens element E2, a limiter aperture ST, a third lens element E3, a fourth lens element E4, a limiter S1, a fifth lens element E5, a sixth lens element E6, an E7 filter and an IMG imaging surface. The imaging system lens assembly includes six lens elements (E1, E2, E3, E4, E5 and E6) with no additional lens elements disposed between each of the six adjacent lens elements.

[00231] The first lens element E1 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00232] The second lens element E2 with negative refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00233] The third E3 lens element with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The third E3 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00234] The fourth lens element E4 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the imaging side being concave in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00235] The fifth E5 lens element with negative refractive power has a surface on the object side being concave in a paraxial region thereof and a surface on the image side being convex in a paraxial region thereof. The fifth E5 lens element is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical.

[00236] The sixth lens element E6 with positive refractive power has a surface on the object side being convex in a paraxial region thereof and a surface on the image side being concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the surface on the object side and the surface on the image side both being aspherical. The surface on the image side of the sixth E6 lens element has two inflection points. The surface on the image side of the sixth lens element E6 has a critical point in a region outside its geometric axis.

[00237] The E7 filter is made of vitreous material and located between the sixth lens element E6 and the IMG imaging surface, and will not affect the focal length of the imaging system lens assembly. The IS image sensor is disposed near or on the IMG imaging surface of the imaging system lens assembly.

[00238] The detailed optical data of the tenth embodiment is presented in Table 10A and the aspheric surface data is presented in Table 10B below.

[00239] In the tenth embodiment, the equation of the aspheric surface profiles of the lens elements mentioned above is the same as the equation of the first embodiment. Furthermore, the definitions of these parameters presented in Table 10C below are the same as those stated in the first embodiment with corresponding values for the tenth embodiment, so an explanation in this regard will not be provided again.

[00240] Furthermore, these parameters can be calculated from Table 10A and Table 10B as the following values and satisfy the following conditions:

Eleventh Achievement

[00241] Fig. 21 is a perspective view of an image capture unit in accordance with the eleventh embodiment of the present disclosure. In this embodiment, an image capture unit 100 is a camera module including a lens unit 101, a drive device 102, an image sensor 103, and an image stabilizer 104. The lens unit 101 includes the lens assembly of image capture system as disclosed in the first embodiment, a tube and a support member (their reference numbers are omitted) for holding the image capture system lens assembly. However, the lens unit 101 may alternatively be provided with the image capture system lens assembly disclosed in other embodiments of the present disclosure, and the present disclosure is not limited in this regard. The image capture light converges on the lens unit 101 of the image capture unit 100 to generate an image with the drive device 102 used to focus the image on the image sensor 103, and the generated image is then digitally transmitted to another electronic component for further processing.

[00242] The drive device 102 may have autofocus functionality, and different drive configurations may be achieved through the use of voice coil motors (VCM), microelectromechanical systems (MEMS), piezoelectric systems, or alloy material. shape memory. The driving device 102 is conducive to obtaining a better image capture position of the lens unit 101, so that a clear image of the imaged object can be captured by the lens unit 101 with different object distances. The image sensor 103 (e.g., CCD or CMOS), which may have high photosensitivity and low noise, is disposed on the imaging surface of the image capture system lens assembly to provide higher image quality.

[00243] The image stabilizer 104, such as an accelerometer, a gyroscope sensor, and a Hall effect sensor, is configured to work with the drive device 102 to provide optical image stabilization (OIS). The drive device 102 working with the image stabilizer 104 is used to compensate for movement or tilt of the lens unit 101 to reduce blurring associated with movement during exposure. In some cases, compensation may be provided by electronic image stabilization (EIS) with image processing software, thereby improving image quality while in motion or in poor lighting conditions.

[00244] In this embodiment, a distance VL between the sixth lens element E6 and the IMG imaging surface of the image capture system lens assembly of the image capture unit 100 can be changed, so that a total length of the 100 image capture unit can be changed. For example, please refer to Fig. 35, which presents schematic views of an image capture system lens assembly when the image capture unit is in an extended state and the image capture system lens assembly. capturing images when the image capturing unit is in a retracted state according to the first embodiment of the present disclosure. As shown in the upper part of Fig. 35, the image capturing unit 100 is in an extended state when capturing an image, and a distance from the surface on the object side of the first lens element E1 to the imaging surface IMG in the extended state is set to be equal to the total length TTL1 of the image capture unit 100 in the extended state. On the other hand, as shown at the bottom of Fig. 35, the image capture unit 100 is in a retracted state when not capturing an image, and a distance from the surface on the object side of the first lens element E1 even the IMG image surface in the retracted state is defined as being equal to the total TTL2 length of the image capture unit 100 in the retracted state. In addition, the total length TTL2 of the image capture unit 100 in the retracted state is less than 0.85 times than the total length TTL1 of the image capture unit 100 in the extended state. Therefore, this is favorable for adjusting the ratio between the lengths of the image capture unit 100 in the extended state and in the retracted state, so that the image capture system lens assembly features long focal length and high frame rate. expansion within limited interior space. Furthermore, a long-focus lens (e.g., a portrait lens) can realize a greater magnification ratio, and by adjusting the amount of incident light, the long-focus lens can achieve a shallower depth of field, which It is conducive to blurring the background to make the photographed object clearer and more vivid.

[00245] In accordance with the present disclosure, image capture unit 100 with a long rear focal length is provided. A light bending element may be disposed in a space (e.g., the space between the imaging side-most lens element and the imaging surface) located on the rear side (i.e., the imaging side) of the group of lenses of the imaging system lens assembly to bend light, or the space can accommodate the lens group to achieve retractability functionality, but the present disclosure is not limited in this regard. Therefore, the imaging system lens assembly can be more flexible in space arrangement, and therefore, the dimensions of an electronic device are not restricted by the total track length of the imaging system lens assembly. Taking the image capture system lens assembly of the present disclosure applied to a telescopic lens as an example, the image capture system lens assembly can be in two states which are an image capture state and a state that It is not for capturing images. When in the imaging state, the lens assembly of the imaging system meets the requirements of large aperture, long focal length, and high image quality. When the image capture system lens assembly is in the non-image capture state, the lens group of the image capture system lens assembly is retracted into the space on the rear side thereof so as to reduce the total length and size. The configurations described above are only illustrative to present some real applications of the present disclosure, and the present disclosure is not limited in this regard.

Twelfth Achievement

[00246] Fig. 22 is a perspective view of an electronic device in accordance with the twelfth embodiment of the present disclosure. Fig. 23 is another perspective view of the electronic device in Fig. 22. Fig. 23 is a block diagram of the electronic device in Fig. 22.

[00247] In this embodiment, an electronic device 200 is a smartphone including the image capture unit 100 disclosed in the eleventh embodiment, an image capture unit 100a, an image capture unit 100b, an image capture unit 100c , an image capture unit 100d, a flash module 201, a focus assist module 202, an image signal processor 203, a video module 204, and an image software processor 205. image 100 and image capture unit 100a are disposed on the same side of electronic device 200 and each of image capture units 100 and 100a has a single focal point. The focus assist module 202 may be a laser distance measuring module or a ToF (time of flight) module, but the present disclosure is not limited in this regard. The image capture unit 100b, the image capture unit 100c, the image capture unit 100d and the video module 204 are disposed on the opposite side of the electronic device 200, and the video module 204 may be interfaced with the user, such that the image capture units 100b, 100c, 100d may be forward-facing cameras of the electronic device 200 for taking selfies, but the present disclosure is not limited in this regard. Furthermore, each of the image capture units 100a, 100b, 100c and 100d may include the image capture system lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit 100. In details, each of the image capture units 100a, 100b, 100c and 100d may include a lens unit, a drive device, an image sensor and an image stabilizer, and each of the lens units may include a mount optical lens assembly such as the image capture system lens assembly of the present disclosure, a tube and a support member for holding the optical lens assembly.

[00248] Image capture unit 100 is a telephoto capture unit, image capture unit 100a is a wide-angle image capture unit, image capture unit 100b is a large image capture unit angle, the 100c image capture unit is an ultra-wide-angle image capture unit, and the 100d image capture unit is a ToF image capture unit. In this embodiment, the image capture units 100 and 100a have different fields of view, so that the electronic device 200 can have varying degrees of magnification in order to meet the requirement for optical zoom functionality. In addition, the image capture unit 100d can determine depth information of the imaged object. In this embodiment, the electronic device 200 includes a plurality of image capture units 100, 100a, 100b, 100c and 100d, but the present disclosure is not limited to the number and arrangement of image capture units.

[00249] When a user captures images of an object 206, light rays converge on the image capture unit 100 or image capture unit 100a to generate images, and the flash module 201 is activated to supplement light. The focus assist module 202 detects the distance of the subject from the captured image object 206 to achieve fast autofocus. The image signal processor 203 is configured to optimize the captured image to improve image quality. The light beam emitted from the focus assist module 202 may be conventional infrared or laser. In addition, the light rays may converge at the image capture unit 100b, 100c or 100d to generate images. The video module 204 may include a touch screen, and the user is able to interact with the video module 204 and the image software processor 205 having various functions for capturing images and completing image processing. Alternatively, the user can capture images via a physical button. The image processed by the image software processor 205 may be displayed on the video module 204.

Thirteenth Achievement

[00250] Fig. 25 is a perspective view of an electronic device in accordance with the thirteenth embodiment of the present disclosure.

[00251] In this embodiment, an electronic device 300 is a smartphone including the image capture unit 100 disclosed in the eleventh embodiment, an image capture unit 100e, an image capture unit 100f, a flash module 301, a focus assist module, an image signal processor, a video module, and an image software processor (not shown). The image capture unit 100, the image capture unit 100e and the image capture unit 100f are arranged on the same side of the electronic device 300, while the video module is arranged on the opposite side of the electronic device 300. Furthermore , each of the image capture units 100e and 100f may include the image capture system lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit 100, and details in this regard are not will be provided again.

[00252] The image capture unit 100 is a telephoto image capture unit, the image capture unit 100e is a wide-angle image capture unit, and the image capture unit 100f is a ultra-wide-angle imaging. In this embodiment, the image capture units 100, 100e and 100f have different fields of view, so that the electronic device 300 can have varying degrees of magnification in order to meet the requirement for optical zoom functionality. Furthermore, the image capture unit 100 may be a telephoto image capture unit having a light bending element configuration, such that the total track length of the image capture unit 100 is not limited by the thickness. of the electronic device 300. Furthermore, the light bending element configuration of the image capture unit 100 may be similar, for example, to one of the structures shown in Fig. 32 to Fig. 34, which may be referred to preceding descriptions corresponding to Fig. 32 to Fig. 34, and details in this regard will not be provided again. In this embodiment, the electronic device 300 includes a plurality of image capture units 100, 100e and 100f, but the present disclosure is not limited to the number and arrangement of image capture units. When a user captures images of an object, rays of light converge on the image capture unit 100, 100e, or 100f to generate images, and the flash module 301 is activated to supplement light. Furthermore, the subsequent processes are carried out in a similar manner to the above-mentioned embodiment, so details in this regard will not be provided again.

Fourteenth Achievement

[00253] Fig. 26 is a perspective view of an electronic device in accordance with the fourteenth embodiment of the present disclosure.

[00254] In this embodiment, an electronic device 400 is a smartphone including the image capture unit 100 disclosed in the eleventh embodiment, an image capture unit 100g, an image capture unit 100h, an image capture unit 100i , a 100j image capture unit, a 100k image capture unit, a 100m image capture unit, a 100n image capture unit, a 100p image capture unit, a flash module 401, a focus assistance, an image signal processor, a video module, and an image software processor (not shown). The image capture units 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n and 100p are arranged on the same side of the electronic device 400, while the video module is arranged on the opposite side of the electronic device 400. Furthermore , each of the image capture units 100g, 100h, 100i, 100j, 100k, 100m, 100n and 100p may include the image capture system lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit. image capture 100, and details in this regard will not be provided again.

[00255] Image capture unit 100 is a telephoto capture unit, image capture unit 100g is a wide-angle image capture unit, image capture unit 100h is a wide-angle image capture unit. telephoto, the 100i image capture unit is a wide angle image capture unit, the 100j image capture unit is an ultra wide angle image capture unit, the 100k image capture unit is a ultra wide-angle image, the 100m image capture unit is a telephoto image capture unit, the 100n image capture unit is a telephoto image capture unit, and the 100p image capture unit is a ToF image capture. In this embodiment, the image capture units 100, 100g, 100h, 100i, 100j, 100k, 100m and 100n have different fields of view, so that the electronic device 400 can have varying degrees of magnification in order to meet the requirement of optical zoom functionality. Furthermore, each of the 100g and 100h image capture units may be a telephoto image capture unit having a light bending element configuration. Furthermore, the light bending element configuration of each of the image capture units 100 and 100h may be similar to, for example, one of the structures shown in Fig. 32 to Fig. 34, which may be referred to to the preceding descriptions corresponding to Fig. 32 to Fig. 34, and details in this regard will not be provided again. In addition, the 100p image capture unit can determine depth information of the imaged object. In this embodiment, the electronic device 400 includes a plurality of image capture units 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n and 100p, but the present disclosure is not limited to the number and arrangement of image capture units. image. When a user captures images of an object, light rays converge on the 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n, or 100p image capture unit to generate images, and the flash module 401 is activated to light supplement. Furthermore, the subsequent processes are carried out in a manner similar to the above-mentioned embodiments, and details in this regard will not be provided again.

Fifteenth Achievement

[00256] Fig. 27 is a perspective view of an electronic device in accordance with the fifteenth embodiment of the present disclosure, and Fig. 28 is another perspective view of the electronic device in Fig. 27.

[00257] In this embodiment, an electronic device is a smartphone including the image capture unit 100 disclosed in the eleventh embodiment, an image capture unit 100q, an image capture unit 1004r, an image capture unit 100s, and a 504 video module.

[00258] In this embodiment, the image capture unit 100, the image capture unit 100r and the image capture unit 100s are arranged on the same side of the electronic device 500, and the image capture unit 100q and the module video units 504 are disposed on the opposite side of the electronic device 500. The image capture unit 100q may be a front-facing camera of the electronic device 500 for taking selfies, but the present disclosure is not limited in this regard. Furthermore, each of the image capture units 100q, 100r and 100s may include the image capture system lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit 100, and the details in this regard will not be proportionate again.

[00259] The image capture unit 100 is a telephoto image capture unit, the image capture unit 100r is a wide-angle image capture unit, and the image capture unit 100s is a ultra-wide-angle imaging. In this embodiment, the image capture units 100, 100r and 100s have different fields of view, so that the electronic device 500 can have varying degrees of magnification in order to meet the requirement for optical zoom functionality for various applications with different requirements. . The image capture unit 100q may have a non-circular aperture, and the optical components of the image capture unit 100q may have ground edges at their outermost positions to coordinate with the shape of the non-circular aperture. Therefore, this is favorable for reducing the size of the image capture unit 100q so as to increase the area ratio of the video module 504 relative to that of the electronic device 500, and reduce the thickness of the electronic device 500. In this embodiment, The electronic device 500 includes a plurality of image capture units 100, 100q, 100r and 100s, but the present disclosure is not limited to the number and arrangement of image capture units.

[00260] The smartphone in this embodiment is only illustrative to show the image capture unit of the present disclosure installed in an electronic device, and the present disclosure is not limited in this regard. The image capture unit can optionally be applied to optical systems with a movable focus. Furthermore, the image capture system lens assembly of the image capture unit features good aberration correction capabilities and high image quality, and can be applied to 3D (three-dimensional) image capture applications in products such as such as digital cameras, mobile devices, digital tablets, smart televisions, networked surveillance devices, dashboard cameras, vehicle rear cameras, multi-camera devices, image recognition systems, motion perception input devices, aerial cameras , wearable devices, portable video recorders and other electronic imaging devices.

[00261] The preceding description, for the purpose of explanation, has been described with reference to specific embodiments. It should be noted that TABLES 1A to 10C present different data for the different embodiments; however, data on different embodiments are obtained from experiments. The embodiments have been chosen and described so as to better explain the principles of the disclosure and its practical applications, thereby enabling those skilled in the art to better utilize the disclosure and the various embodiments with various modifications as are suitable for the particular use contemplated. The embodiments depicted above and the accompanying drawings are illustrative and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise shapes disclosed. Various modifications and variations are possible according to the instructions above.

Claims (29)

1. Image capture system lens assembly characterized by comprising six lens elements, the six lens elements being, in order from one side of the object to one side of the image along an optical path, a first element of lens, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, and each of the six lens elements having a surface on the object side facing toward next to the object and a surface on the image side facing toward the image side; wherein the first lens element has a positive refractive power, the surface on the object side of the fifth lens element is concave in a paraxial region thereof, the surface on the image side of the fifth lens element is convex in a paraxial region thereof thereof, the surface on the image side of the sixth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has at least one inflection point; wherein an axial distance between the surface on the image side of the sixth lens element and an imaging surface is BL, an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth element of lens is TD, a relative center of the lens mount of imaging system is Fno, a radius of curvature of the surface on the imaging side of the fifth lens element is R10, a radius of curvature of the surface on the object side of the sixth lens element is R11, a radius of curvature of the surface on the image side of the sixth lens element is R12, a focal length of the imaging system lens mount is f, a focal distance of the first lens element is f1, a focal length of the third lens element is f3, and the following conditions are satisfied: 2. Image capture system lens assembly, according to claim 1, characterized in that the second lens element has negative refractive power. 3. Image capture system lens assembly according to claim 1, characterized in that a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, a central thickness of the sixth lens element is lens be CT6, and the following condition is satisfied: 4. An image capture system lens assembly according to claim 1, characterized in that a radius of curvature of the surface on the image side of the second lens element is R4, a maximum image height of the system lens assembly image capture is ImgH, and the following condition is satisfied: 5. Image capture system lens assembly according to claim 1, further comprising an aperture limiter, wherein a sum of axial distances between each of all adjacent lens elements of the image capture system lens assembly. image capture system is ∑AT, an axial distance between the aperture limiter and the surface on the imaging side of the sixth lens element is SD, and the following condition is satisfied: 6. Image capture system lens assembly according to claim 1, characterized in that half of a maximum field of view of the image capture system lens assembly is HFOV, and the following condition is satisfied: 7. Image capture system lens assembly according to claim 1, characterized in that at least one lens element of the image capture system lens assembly is manufactured from plastic material; wherein a refractive index of the second lens element is N2, a refractive index of the sixth lens element is N6, and the following condition is satisfied: 8. Image capture system lens assembly according to claim 1, characterized in that a maximum effective radius of the surface on the object side of the first lens element is Y11, a maximum effective radius of the surface on the image side of the sixth lens element be Y62, and the following condition is satisfied: 9. Image capture unit, characterized by comprising: the image capture system lens assembly as defined in claim 1; and an image sensor disposed on the imaging surface of the image capture system lens assembly. 10. Electronic device, characterized by comprising: the image capture unit as defined in claim 9. 11. Electronic device according to claim 10, characterized in that a distance between the sixth lens element and the imaging surface of the image capture system lens assembly can be changed, the image capture unit is in a state of extension when capturing an image, a distance from the surface on the object side of the first lens element to the imaging surface when the image capture unit in the extended state is equal to a total length of the image capture unit in the extended state, the image capture unit being in a retracted state when not capturing an image, a distance from the surface on the object side of the first lens element to the imaging surface when the image capture unit in the retracted state be equal to the total length of the image capture unit in the retracted state, and the total length of the image capture unit in the retracted state is less than 0.85 times the total length of the image capture unit in the retracted state. image in extended state. 12. Image capture system lens assembly characterized by comprising six lens elements, the six lens elements being, in order from one side of the object to one side of the image along an optical path, a first element of lens, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, and each of the six lens elements having a surface on the object side facing toward next to the object and a surface on the image side facing toward the image side; wherein the first lens element has positive refractive power, the second lens element has negative refractive power, the surface on the object side of the fifth lens element is concave in a paraxial region thereof, the surface on the image side of the fifth lens element is convex in a paraxial region thereof, the surface on the image side of the sixth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has an inflection point ; wherein an axial distance between the surface on the image side of the sixth lens element and an imaging surface is BL, an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth element of lens is TD, a focal length of the imaging system lens mount is f, a focal length of the second lens element is f2, a focal length of the fourth lens element is f4, a radius of curvature of the surface in the object side of the fifth lens element is R9, a radius of curvature of the surface on the image side of the fifth lens element is R10, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a central thickness of the third lens element is CT3, a central thickness of the fourth element of lens is CT4, a central thickness of the fifth lens element is CT5, and the following conditions are satisfied: 13. An image capture system lens assembly according to claim 12, characterized in that a focal length of the first lens element is f1, a focal length composed of the second lens element, the third lens element and the fourth lens element be f234, and the following condition is satisfied: 14. Image capture system lens assembly according to claim 12, characterized in that the focal length of the image capture system lens assembly is f, a maximum image height of the image capture system lens assembly. images be ImgH, and the following condition is satisfied: 15. Image capture system lens assembly according to claim 12, characterized in that the surface on the object side of the second lens element is convex in a paraxial region thereof; wherein a distance parallel to an optical geometric axis between a position of maximum effective radius of the surface on the image side of the third lens element and a position of maximum effective radius of the surface on the object side of the fourth lens element is ET34, the distance between the third lens element and the fourth lens element is T34, and the following condition is satisfied: 16. Image capture system lens assembly according to claim 12, characterized in that a maximum effective radius of the surface on the object side of the first lens element is Y11, a maximum effective radius of the surface on the image side of the third lens element be Y32, and the following condition is satisfied: 17. Image capture system lens assembly according to claim 12, characterized in that a central thickness of the first lens element is a maximum of central thicknesses of all lens elements of the image capture system lens assembly ; wherein the central thickness of the first lens element is CT1, the central thickness of the fifth lens element is CT5, and the following condition is satisfied: 18. Image capture system lens assembly according to claim 12, characterized in that an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, and the following condition is satisfied: 19. Image capture system lens assembly according to claim 12, characterized in that a radius of curvature of the surface on the image side of the third lens element is R6, a radius of curvature of the surface on the object side of the fourth lens element be R7, and the following condition is satisfied: 20. An image capture system lens assembly according to claim 12, characterized in that a relative center of the image capture system lens assembly is Fno, a radius of curvature of the surface on the object side of the sixth image capture element. lens be R11, a radius of curvature of the surface on the image side of the sixth lens element be R12, and the following conditions are satisfied: 21. Image capture system lens assembly characterized by comprising six lens elements, the six lens elements being, in order from one side of the object to one side of the image along an optical path, a first element of lens, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, and each of the six lens elements having a surface on the object side facing toward next to the object and a surface on the image side facing toward the image side; wherein the first lens element has positive refractive power, the second lens element has negative refractive power, the surface on the image side of the fifth lens element is convex in a paraxial region thereof, the surface on the image side of the sixth lens element is concave in a paraxial region thereof, and the surface on the image side of the sixth lens element has at least one inflection point; wherein an axial distance between the surface on the image side of the sixth lens element and an imaging surface is BL, an axial distance between the surface on the object side of the first lens element and the surface on the image side of the sixth element of lens is TD, a radius of curvature of the surface on the image side of the second lens element is R4, a radius of curvature of the surface on the object side of the fifth lens element is R9, a displacement in parallel with an optical geometric axis from an axial vertex of the surface on the object side of the fourth lens element to a position of maximum effective radius of the surface on the object side of the fourth lens element is SAG41, a displacement in parallel with the optical geometric axis from an axial vertex of the surface on the image side of the fourth lens element to a position of maximum effective radius of the surface on the image side of the fourth lens element is SAG42, a central thickness of the fourth lens element is CT4, and the following conditions are satisfied: 22. An image capture system lens assembly according to claim 21, characterized in that the surface on the image side of the second lens element is concave in a paraxial region thereof, a focal distance of the image capture system lens assembly. image capture is f, a focal length of the second lens element is f2, the following condition is satisfied: 23. Image capture system lens assembly according to claim 21, characterized in that a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the fifth lens element be N5, and the following condition is satisfied: 24. An image capture system lens assembly according to claim 21, characterized in that the surface on the object side of the fifth lens element is concave in a paraxial region thereof, a focal distance of the image capture system lens assembly. imaging be f, a radius of curvature of the surface on the imaging side of the fifth lens element is R10, and the following condition is satisfied: 25. Image capture system lens assembly according to claim 21, further comprising an aperture limiter, wherein an axial displacement from the surface on the object side of the first lens element to the aperture limiter is Dr1s, an axial displacement from the aperture limiter to the surface on the imaging side of the first lens element is Dsr2, and the following condition is satisfied: 26. Image capture system lens assembly according to claim 21, characterized in that an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element be T23, an axial distance between the third lens element and the fourth lens element be T34, a focal distance between the fourth lens element and the fifth lens element be T45, an axial distance between the fifth lens element be lens and the sixth lens element is T56, and the following condition is satisfied: 27. Image capture system lens assembly according to claim 21, characterized in that a radius of curvature of the surface on the object side of the third lens element is R5, a radius of curvature of the surface on the image side of the third lens element be R6, and the following condition is satisfied: 28. Image capture system lens assembly according to claim 21, characterized in that a focal length composed of the first lens element, the second lens element and the third lens element is f123, a focal length composed of the fourth lens element, the fifth lens element and the sixth lens element be f456, and the following condition is satisfied: 29. Image capture system lens assembly according to claim 21, characterized in that the surface on the image side of the sixth lens element has at least one critical point in a region outside the geometric axis thereof, a vertical distance between a critical point on the surface on the image side of the sixth lens element and the optical axis being Yc62, a maximum effective radius of the surface on the image side of the sixth lens element being Y62, and the at least one critical point on the surface on the image side of the sixth lens element satisfy the following condition: