Image capturing lens assembly, image capturing device and electronic device

Abstract

The invention provides an image capturing lens assembly, an image capturing device and an electronic device. The image capturing lens group includes eight lens elements including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element from an object side to an image side. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The fourth lens element has negative refractive power. The image-side surface of the eighth lens element is concave in a paraxial region thereof, and the image-side surface of the eighth lens element includes at least one inflection point. When specific conditions are satisfied, a better viewing angle can be provided and high imaging quality can be maintained.

Description

Technical Field

[0001] The present disclosure relates to an image capture system lens set and an image capturing device, and more particularly to a miniaturized image capture system lens set and an image capturing device applied to an electronic device. Background Art

[0002] As semiconductor process technology becomes more advanced, the performance of electronic photosensitive elements has been improved, and the pixels can reach a smaller size. Therefore, optical lenses with high imaging quality have become an indispensable part. As technology changes with each passing day, the application range of electronic devices equipped with optical lenses has become wider, and the requirements for optical lenses have become more diverse. Since it is difficult for optical lenses in the past to strike a balance between the requirements of imaging quality, sensitivity, aperture size, volume or viewing angle, the present invention provides an optical lens with high imaging quality to meet the requirements.

[0003] In addition, today's drones are turning to lightweight, light and high-quality imaging. In order to reduce weight, they are all made of plastic lenses. Although this helps to simplify the optical lens structure and reduce the overall size, it is not only more susceptible to external temperature and greater deformation in high temperature, low temperature, humid weather environments, but it is also difficult to maintain high imaging quality in a variety of weather environments at the same time, resulting in greatly limited environments for drone use. Summary of the invention

[0004] The image capture system lens set, imaging device and electronic device provided by the present disclosure can provide a better viewing angle and maintain high imaging quality through the configuration of the lens refractive power, surface shape and lens spacing in the image capture system lens set.

[0005] According to the present disclosure, an imaging system lens group is provided, which includes eight lenses. The eight lenses are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the first lens is concave near the optical axis. The second lens has a positive refractive power. The fourth lens has a negative refractive power. The fifth lens has a positive refractive power. The eighth lens has a negative refractive power, and its image-side surface is concave near the optical axis, and its image-side surface includes at least one inflection point. The imaging system lens group further includes an aperture. The distance from the aperture to the image-side surface of the eighth lens on the optical axis is SD, the distance from the object-side surface of the first lens to the image-side surface of the eighth lens on the optical axis is TD, the focal length of the imaging system lens group is f, the focal length of the first lens is f1, the focal length of the second lens is f2, and the distance between the first lens and the second lens on the optical axis is T12. The radius of curvature of the image-side surface of the fifth lens is R10, and the following conditions are satisfied: 0.20 < T12 / f < 2.50; 0.25 < |f2 / f1| < 1.40; 0.01 < SD / TD < 0.70; and 0.40 < |f / R10| < 2.5.

[0006] According to the present disclosure, an image capturing device is provided, which includes the aforementioned imaging system lens group and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging system lens group.

[0007] According to the present disclosure, an electronic device is provided, which includes the aforementioned image capturing device.

[0008] According to the present disclosure, an imaging system lens group is provided, which includes eight lenses. The eight lenses are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the first lens is concave near the optical axis. The object-side surface of the second lens is convex near the optical axis. The fourth lens has a negative refractive power. The image-side surface of the fifth lens is convex near the optical axis. The image-side surface of the eighth lens is concave near the optical axis, and its image-side surface includes at least one inflection point. The focal length of the imaging system lens group is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the distance between the first lens and the second lens on the optical axis is T12, the radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, and the following conditions are satisfied: 0.25 < T12 / f < 2.50; 0.25 < |f2 / f1| < 1.40; and -12.00 < (R3 - R4) / (R3 + R4) < 0.20.

[0009] According to the present disclosure, an imaging system lens group is provided, which includes eight lenses. The eight lenses are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the first lens is concave near the optical axis. The second lens has a positive refractive power, and its object-side surface is convex near the optical axis. The fourth lens has a negative refractive power. The image-side surface of the fifth lens is convex near the optical axis. The eighth lens has a negative refractive power, and its image-side surface is concave near the optical axis, and its image-side surface includes at least one inflection point. The imaging system lens group further includes an aperture. The distance from the aperture to the image-side surface of the eighth lens on the optical axis is SD, the distance from the object-side surface of the first lens to the image-side surface of the eighth lens on the optical axis is TD, the focal length of the imaging system lens group is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the spacing distance between the first lens and the second lens on the optical axis is T12, the radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface of the eighth lens is R16, which satisfy the following conditions: 0.28 < T12 / f < 2.00; 0.01 < |f2 / f1| < 1.40; 0.01 < SD / TD < 0.70; and 0.10 < (R1 - R16) / (R1 + R16) < 2.00.

[0010] When T12 / f satisfies the above conditions, the ratio of the lens spacing to the focal length between the first lens and the second lens can be adjusted, which helps to reasonably allocate the volume, reduce the assembly error, and control the field of view size.

[0011] When |f2 / f1| satisfies the above conditions, the refractive powers of the first lens and the second lens can be balanced, which helps to increase the symmetry of the imaging system lens group and reduce the spot size in the central field of view.

[0012] When SD / TD satisfies the above conditions, the aperture position can be controlled, which helps to balance the light input amount and the lens volume.

[0013] When |f / R10| satisfies the above conditions, the refractive power and the surface shape of the lens can be effectively balanced, which helps to correct the aberration of the imaging system lens group and reduce the stray light therein.

[0014] When (R3 - R4) / (R3 + R4) satisfies the above conditions, the radius of curvature of the object-side surface and the radius of curvature of the image-side surface of the second lens can be adjusted, which helps to reduce the effective diameter size and the volume of the imaging system lens group.

[0015] When (R1-R16) / (R1+R16) satisfies the above conditions, the curvature radius of the object-side surface of the first lens and the curvature radius of the image-side surface of the eighth lens can be adjusted, which helps to strike a balance between the central focusing quality and the volume of the image capture system lens group. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram showing an image capturing device according to a first embodiment of the present disclosure is shown;

[0017] Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment;

[0018] Figure 3 A schematic diagram showing an image capturing device according to a second embodiment of the present disclosure is shown;

[0019] Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment;

[0020] Figure 5 A schematic diagram illustrating an image capturing device according to a third embodiment of the present disclosure;

[0021] Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment;

[0022] Figure 7 A schematic diagram illustrating an image capturing device according to a fourth embodiment of the present disclosure is shown;

[0023] Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment;

[0024] Fig. 9 A schematic diagram illustrating an imaging device according to a fifth embodiment of the present disclosure is shown;

[0025] Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment;

[0026] Fig.11 A schematic diagram illustrating an imaging device according to a sixth embodiment of the present disclosure is shown;

[0027] Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment;

[0028] Fig.13 A schematic diagram illustrating an imaging device according to a seventh embodiment of the present disclosure is shown;

[0029] Fig.14From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment;

[0030] Fig.15 A schematic diagram illustrating an image capturing device according to an eighth embodiment of the present disclosure is shown;

[0031] Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment;

[0032] Fig.17 A schematic diagram illustrating an image capturing device according to a ninth embodiment of the present disclosure is shown;

[0033] Fig.18 From left to right are the spherical aberration, astigmatism and distortion curves of the ninth embodiment;

[0034] Fig.19 A schematic diagram illustrating an imaging device according to a tenth embodiment of the present disclosure is shown;

[0035] Fig. 20 From left to right are the spherical aberration, astigmatism and distortion curves of the tenth embodiment;

[0036] Fig.21 A schematic diagram illustrating an image capturing device according to an eleventh embodiment of the present disclosure is shown;

[0037] Fig. 22 From left to right are the spherical aberration, astigmatism and distortion curves of the eleventh embodiment;

[0038] Fig.23 A schematic diagram showing the inflection points and critical points of each lens according to the first embodiment;

[0039] Fig.24 A schematic diagram showing some parameters according to the first embodiment;

[0040] Fig.25 A three-dimensional schematic diagram of an imaging device according to a twelfth embodiment of the present disclosure is shown;

[0041] Fig.26A A schematic diagram showing one side of an electronic device according to a thirteenth embodiment of the present disclosure;

[0042] Fig.26B Draw according to Fig.26A A schematic diagram of the other side of the electronic device;

[0043] Fig.26C Draw according to Fig.26A A system diagram of an electronic device;

[0044] Fig. 27A schematic diagram showing one side of an electronic device according to a fourteenth embodiment of the present disclosure;

[0045] Fig.28 A schematic diagram showing one side of an electronic device according to a fifteenth embodiment of the present disclosure;

[0046] Fig.29A A schematic diagram showing one side of an electronic device according to a sixteenth embodiment of the present disclosure;

[0047] Fig.29B Draw according to Fig.29A A schematic diagram of the other side of the electronic device;

[0048] Fig.30 A three-dimensional schematic diagram of an electronic device according to a seventeenth embodiment of the present disclosure is shown;

[0049] Fig.31A A schematic diagram showing a configuration relationship of an optical path turning element in a lens assembly of an image capturing system according to the present disclosure is shown;

[0050] Fig.31B A schematic diagram showing another configuration relationship of the optical path turning element in the lens assembly of the image capture system according to the present disclosure; and

[0051] Fig.31C A schematic diagram showing a configuration relationship of two optical path turning elements in a lens assembly of an image capturing system according to the present disclosure is shown.

[0052]

Explanation of symbols

[0053] 200,300,400,500,600:Electronic devices

[0054] 1,2,3,4,5,6,7,8,9,10,11,100,110,120,130,140,310,320,330,410,420,430,440,450,460,470,480,490,510,520,530,540,610: Imaging device

[0055] 101: Imaging Lens

[0056] 102: Driving device group

[0057] 103: Electronic photosensitive element

[0058] 104: Image stabilization module

[0059] 201,301,401: Flash module

[0060] 202: Focus assist module

[0061] 203: Image Signal Processor

[0062] 204,504: User Interface

[0063] 205: Image Software Processor

[0064] 206: Subject

[0065] ST: Aperture

[0066] S1, S2: aperture

[0067] E1: First lens

[0068] E2: Second lens

[0069] E3: The third lens

[0070] E4: The fourth lens

[0071] E5: The fifth lens

[0072] E6: The sixth lens

[0073] E7: Seventh lens

[0074] E8: The eighth lens

[0075] E9: Filter element

[0076] IMG: Imaging surface

[0077] IS: Electronic photosensitive element

[0078] IP: Inflection Point

[0079] CP: critical point

[0080] OA1: First optical axis

[0081] OA2: Second optical axis

[0082] OA3: Third optical axis

[0083] LF, LF1, LF2: Optical path turning element

[0084] LG: Lens Group

[0085] f: Focal length of the image capture system lens group

[0086] Fno: Aperture value of the lens group of the image acquisition system

[0087] HFOV: Half of the maximum field of view of the image acquisition system lens group

[0088] FOV: The maximum viewing angle of the image capture system lens group

[0089] TL: The distance from the object side surface of the first lens to the imaging surface on the optical axis

[0090] ImgH: Maximum image height of the image capture system lens group

[0091] SD: The distance from the aperture to the image-side surface of the eighth lens on the optical axis

[0092] TD: The distance on the optical axis from the object side surface of the first lens to the image side surface of the eighth lens

[0093] BL: The distance from the image side surface of the eighth lens to the imaging plane on the optical axis

[0094] T12: The distance between the first lens and the second lens on the optical axis

[0095] T56: The distance between the fifth lens and the sixth lens on the optical axis

[0096] T67 The distance between the sixth lens and the seventh lens on the optical axis

[0097] T78: The distance between the seventh lens and the eighth lens on the optical axis

[0098] CT1: Thickness of the first lens on the optical axis

[0099] CT2: The thickness of the second lens on the optical axis

[0100] CT3: Thickness of the third lens on the optical axis

[0101] CT4: Thickness of the fourth lens on the optical axis

[0102] CT5: Thickness of the fifth lens on the optical axis

[0103] f1: focal length of the first lens

[0104] f2: focal length of the second lens

[0105] f3: focal length of the third lens

[0106] f4: focal length of the fourth lens

[0107] f5: focal length of the fifth lens

[0108] f6: focal length of the sixth lens

[0109] R1: The radius of curvature of the object side surface of the first lens

[0110] R3: The radius of curvature of the object side surface of the second lens

[0111] R4: The radius of curvature of the image-side surface of the second lens

[0112] R9: The radius of curvature of the object side surface of the fifth lens

[0113] R10: The radius of curvature of the image-side surface of the fifth lens

[0114] R13: Radius of curvature of the object side surface of the seventh lens

[0115] R16: Radius of curvature of the image-side surface of the eighth lens

[0116] Dr1r4: The distance from the object side surface of the first lens to the image side surface of the second lens on the optical axis

[0117] Dr11r16: The distance on the optical axis from the object side surface of the sixth lens to the image side surface of the eighth lens

[0118] V3: Abbe number of the third lens

[0119] V4: Abbe number of the fourth lens

[0120] V6: Abbe number of the sixth lens

[0121] V8: Abbe number of the eighth lens

[0122] N2: refractive index of the second lens

[0123] Y1R1: Maximum effective radius of the first lens object side surface

[0124] Y5R1: Maximum effective radius of the fifth lens object side surface

[0125] Y8R2: Maximum effective radius of the image side surface of the eighth lens

[0126] SAG1R2: Horizontal displacement of the intersection of the image side surface of the first lens on the optical axis to the maximum effective radius position of the image side surface of the first lens on the optical axis DETAILED DESCRIPTION

[0127] The present disclosure provides an image capture system lens set, comprising eight lenses, and the eight lenses are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from the object side to the image side. Each lens has an object side surface facing the object side and an image side surface facing the image side.

[0128] The object side surface of the first lens may be convex near the optical axis, which helps to increase the viewing angle and the image size. The image side surface of the first lens may be concave near the optical axis, which can adjust the refractive power of the first lens, which helps to balance the spherical aberration of the lens group of the image capture system.

[0129] The second lens may have positive refractive power, which helps to converge light to compress the volume. The object side surface of the second lens near the optical axis may be convex, and the surface shape and refractive power of the second lens may be adjusted to help compress the volume.

[0130] The fourth lens has a negative refractive power, which can adjust the traveling direction of light rays and help increase the imaging surface.

[0131] The fifth lens may have a positive refractive power, which can balance the refractive power of the fourth lens and effectively control the light path. The surface of the object side of the fifth lens near the optical axis may be convex, which can increase the symmetry of the lens group of the image capture system and improve the image quality. The surface of the image side of the fifth lens near the optical axis may be convex, which can provide the fifth lens with the ability to converge light rays and avoid stray light caused by too large an incident angle of light in the peripheral area.

[0132] The surface of the object side of the seventh lens near the optical axis may be convex, which can adjust the surface shape and refractive power of the seventh lens, helping to compress the volume and correct the aberration. The surface of the image side of the seventh lens near the optical axis may be concave, which can assist the eighth lens in controlling the back focal length and prevent the lens volume from being too large, resulting in difficulty in reducing the device size.

[0133] The eighth lens may have a negative refractive power, which can effectively control the back focal length of the lens group of the image capture system to avoid its total length from being too long. The surface of the image side of the eighth lens near the optical axis is concave, which can assist in balancing the back focal length of the lens group of the image capture system and correcting the off-axis aberration at the same time.

[0134] The surface of the object side of the seventh lens may include at least one inflection point, which is beneficial to strengthening the ability to correct the peripheral image aberration of the object side of the seventh lens. The surface of the image side of the seventh lens may include at least one inflection point, which can increase the degree of freedom of the shape design of the seventh lens to facilitate lens manufacturing and aberration correction.

[0135] The surface of the image side of the eighth lens includes at least one inflection point, which is beneficial to correcting and compensating the peripheral image aberration.

[0136] The focal length of the lens group of the image capture system is f, and the distance between the first lens and the second lens on the optical axis is T12, which satisfies the following conditions: 0.20 < T12 / f < 2.50. Thereby, the ratio of the lens spacing to the focal length between the first lens and the second lens can be adjusted, which helps to reasonably allocate the volume, reduce the assembly error and control the field of view size. Furthermore, it can satisfy the following conditions: 0.25 < T12 / f < 2.50. Furthermore, it can satisfy the following conditions: 0.25 < T12 / f < 2.00. Furthermore, it can satisfy the following conditions: 0.28 < T12 / f < 2.00. Furthermore, it can satisfy the following conditions: 0.35 < T12 / f < 1.00. Furthermore, it can satisfy the following conditions: 0.30 < T12 / f < 1.50. Furthermore, it can satisfy the following conditions: 0.43 ≤ T12 / f ≤ 0.63.

[0137] The focal length of the first lens is f1, and the focal length of the second lens is f2, which satisfy the following conditions: 0.01 < |f2 / f1| < 1.40. Thereby, the refractive powers of the first lens and the second lens can be balanced, which helps to increase the symmetry of the lens group of the image capturing system and reduce the spot size in the central field of view. Furthermore, it can satisfy the following conditions: 0.25 < |f2 / f1| < 1.40. Furthermore, it can satisfy the following conditions: 0.40 < |f2 / f1| < 1.20. Furthermore, it can satisfy the following conditions: 0.61 ≤ |f2 / f1| ≤ 0.93.

[0138] The lens group of the image capturing system may further include a diaphragm. The distance from the diaphragm to the image-side surface of the eighth lens on the optical axis is SD, and the distance from the object-side surface of the first lens to the image-side surface of the eighth lens on the optical axis is TD, which satisfy the following conditions: 0.01 < SD / TD < 0.70. Thereby, the position of the diaphragm can be controlled, which helps to balance the light incident amount and the lens volume. Furthermore, it can satisfy the following conditions: 0.20 < SD / TD < 0.60. Furthermore, it can satisfy the following conditions: 0.38 ≤ SD / TD ≤ 0.49.

[0139] The focal length of the lens group of the image capturing system is f, and the radius of curvature of the image-side surface of the fifth lens is R10, which satisfy the following conditions: 0.40 < |f / R10| < 2.5. Thereby, the refractive power and the surface shape of the lens can be effectively balanced, which helps to correct the aberration of the lens group of the image capturing system and reduce the stray light therein. Furthermore, it can satisfy the following conditions: 0.50 < |f / R10| < 2.0. Furthermore, it can satisfy the following conditions: 0.76 ≤ |f / R10| ≤ 1.26.

[0140] The radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, which satisfy the following conditions: -12.00 < (R3 - R4) / (R3 + R4) < 0.20. Thereby, the radius of curvature of the object-side surface of the second lens and the radius of curvature of the image-side surface of the second lens can be adjusted, which helps to reduce the effective diameter size and the volume of the lens group of the image capturing system. Furthermore, it can satisfy the following conditions: -10.00 < (R3 - R4) / (R3 + R4) < 0.00. Furthermore, it can satisfy the following conditions: -7.00 < (R3 - R4) / (R3 + R4) < -0.50. Furthermore, it can satisfy the following conditions: -5.37 ≤ (R3 - R4) / (R3 + R4) ≤ -0.72.

[0141] The radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface of the eighth lens is R16, which satisfy the following condition: 0.10 < (R1 - R16) / (R1 + R16) < 2.00. Thereby, the radius of curvature of the object-side surface of the first lens and the radius of curvature of the image-side surface of the eighth lens can be adjusted, which helps to balance between the central light-gathering quality and the volume of the lens group of the image capture system. Furthermore, it can satisfy the following condition: 0.50 < (R1 - R16) / (R1 + R16) < 1.50. Furthermore, it can satisfy the following condition: 0.35 ≤ (R1 - R16) / (R1 + R16) ≤ 1.10.

[0142] The focal length of the lens group of the image capture system is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, which satisfy the following condition: 0 < (|f / f3| + |f / f6|) / (|f / f4| + |f / f5|) < 0.50. Thereby, the light-gathering ability of the fourth lens and the fifth lens can be strengthened and balanced by the third lens and the sixth lens, which helps to shorten the total length of the lens group of the image capture system. Furthermore, it can satisfy the following condition: 0.02 < (|f / f3| + |f / f6|) / (|f / f4| + |f / f5|) < 0.30.

[0143] The focal length of the third lens is f3, and the focal length of the fifth lens is f5, which satisfy the following condition: 0 < |f5 / f3| < 0.25. Thereby, the refractive power configuration can be adjusted to balance the back focal length of the lens group of the image capture system, thereby meeting more diverse applications. Furthermore, it can satisfy the following condition: 0.01 < |f5 / f3| < 0.18.

[0144] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum image height of the lens group of the image capture system is ImgH, which satisfy the following condition: 1.50 < TL / ImgH < 3.50. Thereby, the total length of the lens group of the image capture system can be effectively compressed with a sufficient imaging size. Furthermore, it can satisfy the following condition: 2.40 < TL / ImgH < 3.20.

[0145] The thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, which satisfy the following condition: 0.10 < CT4 / CT5 < 0.40. Thereby, the ratio of the central thickness of the fourth lens and the fifth lens can be adjusted, which helps to increase the viewing angle. Furthermore, it can satisfy the following condition: 0.12 < CT4 / CT5 < 0.38.

[0146] The distance between the first lens and the second lens on the optical axis is T12, and the distance from the image side surface of the eighth lens to the imaging surface on the optical axis is BL, which satisfy the following conditions: 0.90 < T12 / BL < 5.00. Thereby, the field of view angle and the back focal length of the lens group of the image capturing system can be balanced, which is beneficial for applications in different fields. Furthermore, it can satisfy the following conditions: 1.50 < T12 / BL < 4.00.

[0147] The Abbe number of the eighth lens is V8, which satisfy the following conditions: 10.0 < V8 < 40.0. Thereby, the chromatic aberration generated by the lens group of the image capturing system can be corrected and it is helpful to improve the imaging quality. Furthermore, it can satisfy the following conditions: 15.0 < V8 < 35.0.

[0148] The distance from the object side surface of the first lens to the image side surface of the second lens on the optical axis is Dr1r4, and the distance from the object side surface of the sixth lens to the image side surface of the eighth lens on the optical axis is Dr11r16, which satisfy the following conditions: 1.20 < Dr1r4 / Dr11r16 < 2.50. Thereby, the thickness ratio of the near object end lens group and the near image end lens group can be adjusted, which is helpful to balance the assembly error and manufacturability. Furthermore, it can satisfy the following conditions: 1.50 < Dr1r4 / Dr11r16 < 2.20.

[0149] The maximum effective radius of the object side surface of the first lens is Y1R1, and the maximum effective radius of the image side surface of the eighth lens is Y8R2, which satisfy the following conditions: 0.80 < Y1R1 / Y8R2 < 1.50. Thereby, the optical effective diameter heights of the first lens and the eighth lens can be balanced, the symmetry of the lens group of the image capturing system can be improved, and it is helpful to improve the imaging quality. Furthermore, it can satisfy the following conditions: 1.00 < Y1R1 / Y8R2 < 1.30.

[0150] The maximum effective radius of the object side surface of the fifth lens is Y5R1, and the maximum image height of the lens group of the image capturing system is ImgH, which satisfy the following conditions: 0.20 < Y5R1 / ImgH < 0.50. Thereby, the optical effective diameter height of the object side of the fifth lens can be adjusted, which is helpful to increase the imaging size and reduce the effective diameter size. Furthermore, it can satisfy the following conditions: 0.25 < Y5R1 / ImgH < 0.42.

[0151] The horizontal displacement amount on the optical axis from the intersection point of the image side surface of the first lens on the optical axis to the position of the maximum effective radius of the image side surface of the first lens is SAG1R2, and the thickness of the first lens on the optical axis is CT1, which satisfy the following conditions: 1.00 < SAG1R2 / CT1 < 4.50. Thereby, the bending degree of the peripheral surface shape of the image side of the first lens can be balanced, so as to alleviate the refraction angle of light and avoid total reflection. Furthermore, it can satisfy the following conditions: 1.40 < SAG1R2 / CT1 < 4.00.

[0152] Both the first lens and the second lens can be made of glass. Using glass material can effectively reduce the sensitivity to environmental factors, be highly stable in various environments, and using glass material at the object side end of the lens group of the image capture system helps resist humid environments and prevent scratches on the surface, which can effectively extend the service life of electronic products.

[0153] The refractive index of the second lens is N2, which satisfies the following conditions: 1.620 < N2 < 1.900. Thereby, the refractive index of the second lens can be adjusted, which helps reduce the imaging differences caused by temperature effects and maintain a high imaging level in different temperature environments. Moreover, it can satisfy the following conditions: 1.680 < N2 < 1.850.

[0154] The maximum viewing angle of the lens group of the image capture system is FOV, which satisfies the following conditions: 70.0 degrees < FOV < 120.0 degrees. Thereby, the lens group of the image capture system can have a sufficient imaging range to meet the field of view requirements of the application device. Moreover, it can satisfy the following conditions: 80.0 degrees < FOV < 100.0 degrees.

[0155] The radius of curvature of the object side surface of the first lens is R1, and the radius of curvature of the object side surface of the fifth lens is R9, which satisfies the following conditions: 0.10 < (R1 - R9) / (R1 + R9) < 2.50. Thereby, the radius of curvature of the object side surface of the first lens and the radius of curvature of the object side surface of the fifth lens can be effectively balanced, enabling the first lens to cooperate with the fifth lens, which helps improve the central imaging quality. Moreover, it can satisfy the following conditions: 0.20 < (R1 - R9) / (R1 + R9) < 1.50. Moreover, it can satisfy the following conditions: 0.30 < (R1 - R9) / (R1 + R9) < 1.00.

[0156] The thickness of the fifth lens on the optical axis is CT5, and the distance between the seventh lens and the eighth lens on the optical axis is T78, which satisfies the following conditions: 0.10 < CT5 / T78 < 4.00. Thereby, the central thickness of the fifth lens and the distance between the seventh lens and the eighth lens can be balanced, which is beneficial to the assembly of the lens group of the image capture system and improves the yield. Moreover, it can satisfy the following conditions: 0.50 < CT5 / T78 < 2.50.

[0157] The Abbe number of the third lens is V3, and the Abbe number of the sixth lens is V6, which satisfies the following conditions: 1.5 < V3 / V6 < 3.5. Thereby, the optical path of the lens group of the image capture system can be adjusted, the converging ability between different wavelength lights can be balanced, and chromatic aberration can be corrected. Moreover, it can satisfy the following conditions: 1.8 < V3 / V6 < 3.0.

[0158] The radius of curvature of the image-side surface of the fifth lens is R10, and the radius of curvature of the object-side surface of the seventh lens is R13, which satisfy the following condition: -2.00 < R10 / R13 < -0.10. Thereby, the surface shapes of the fifth lens and the seventh lens can be effectively balanced, enabling the fifth lens to have a strong light path control ability and being balanced by the seventh lens. Moreover, it can satisfy the following condition: -1.80 < R10 / R13 < -0.50.

[0159] The thickness of the third lens on the optical axis is CT3, and the thickness of the fifth lens on the optical axis is CT5, which satisfy the following condition: 1.70 < CT5 / CT3 < 5.50. Thereby, the ratio of the central thicknesses of the third lens and the fifth lens can be balanced to control the volume of the lens group of the image capture system. Moreover, it can satisfy the following condition: 2.00 < CT5 / CT3 < 4.00.

[0160] The focal length of the lens group of the image capture system is f, the radius of curvature of the object-side surface of the fifth lens is R9, and the radius of curvature of the image-side surface of the fifth lens is R10, which satisfy the following condition: 1.20 < |f / R9| + |f / R10| < 3.40. Thereby, the surface shape and refractive power of the fifth lens can be adjusted to correct the imaging quality. Moreover, it can satisfy the following condition: 1.50 < |f / R9| + |f / R10| < 2.80.

[0161] The aperture can be located between the third lens and the fourth lens. Thereby, the imaging range and the incident angle of light on the imaging surface can be restricted to achieve a high-brightness imaging effect.

[0162] The thickness of the fifth lens on the optical axis is CT5, and the distance between the fifth lens and the sixth lens on the optical axis is T56, which satisfy the following condition: 0.20 < T56 / CT5 < 1.35. Thereby, there can be sufficient space between the fifth lens and the sixth lens, increasing the design freedom. Moreover, it can satisfy the following condition: 0.50 < T56 / CT5 < 1.15.

[0163] The Abbe number of the third lens is V3, and the Abbe number of the fourth lens is V4, which satisfy the following condition: 1.5 < V3 / V4 < 3.5. Thereby, the distribution of lens materials can be adjusted to correct chromatic aberration. Moreover, it can satisfy the following condition: 1.8 < V3 / V4 < 3.0.

[0164] Each of the technical features in the lens group of the image capture system of the above disclosure can be combined and configured to achieve the corresponding effects.

[0165] The image capture system lens group provided by the present disclosure can be made of glass or plastic. If the lens is made of glass, the freedom of the refractive power configuration of the image capture system lens group can be increased, and the glass lens can be made using grinding or molding techniques. If the lens is made of plastic, the production cost can be effectively reduced. In addition, a spherical surface or an aspherical surface (ASP) can be set on the mirror surface, wherein a spherical lens can reduce the difficulty of manufacturing, and if an aspherical surface is set on the mirror surface, more control variables can be obtained to reduce aberrations, reduce the number of lenses, and effectively reduce the total length of the image capture system lens group of the present disclosure, and the aspherical surface can be made by plastic injection molding or molded glass lenses.

[0166] In the image capture system lens assembly provided by the present disclosure, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects to change the transmittance of the lens for light in a specific wavelength band, thereby reducing stray light and color deviation. For example: the additive can have the function of filtering out light in the 600nm to 800nm ​​wavelength band in the system to reduce excess red light or infrared light; or it can filter out light in the 350nm to 450nm wavelength band to reduce blue light or ultraviolet light in the system. Therefore, the additive can prevent light in a specific wavelength band from interfering with imaging. In addition, the additive can be evenly mixed in the plastic and made into a lens using injection molding technology. In addition, the additive can also be configured as a coating on the surface of the lens to provide the above-mentioned effects.

[0167] In the image capture system lens assembly provided by the present disclosure, if the lens surface is an aspherical surface, it means that the entire optical effective area of ​​the lens surface or a part of it is an aspherical surface.

[0168] In the image capture system lens set provided by the present disclosure, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface can be convex at the near optical axis; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface can be concave at the near optical axis. In the image capture system lens set provided by the present disclosure, if the lens has positive refractive power or negative refractive power, or the focal length of the lens, it can refer to the refractive power or focal length of the lens at the near optical axis.

[0169] In the image capture system lens set provided by the present disclosure, the critical point is the tangent point on the lens surface that is tangent to a tangent plane perpendicular to the optical axis, except for the intersection with the optical axis; the inflection point is the intersection point where the curvature of the lens surface changes positively and negatively.

[0170] The imaging surface of the image capture system lens group provided by the present disclosure can be a plane or a curved surface with any curvature, especially a curved surface with a concave surface facing the object side, depending on the different electronic photosensitive elements corresponding to it. In addition, one or more imaging correction elements (flat field elements, etc.) can be selectively arranged between the lens closest to the imaging surface on the imaging light path and the imaging surface in the image capture system lens group of the present disclosure to achieve the effect of correcting the image (image bending, etc.). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, surface shape (convex or concave, spherical or aspherical, diffractive surface and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally speaking, the preferred imaging correction element configuration is to place a thin plano-concave element with a concave surface facing the object side close to the imaging surface.

[0171] In the image capture system lens set provided by the present disclosure, at least one element having the function of turning the optical path, such as a prism or a reflector, can be selectively arranged on the optical path between the object and the imaging surface, wherein the prism surface or the reflector surface can be a plane, a spherical surface, an aspherical surface or a free-form surface, etc., to provide a more flexible spatial configuration of the image capture system lens set, so that the thinness of the electronic device is not restricted by the total optical length of the image capture system lens set. For further explanation, please refer to Fig.31A as well as Fig.31B ,in Fig.31A A schematic diagram showing a configuration relationship of the optical path turning element LF in the lens group of the image capturing system according to the present disclosure is shown. Fig.31B A schematic diagram showing another configuration relationship of the optical path turning element LF in the lens group of the image capture system according to the present disclosure is shown. Fig.31A as well as Fig.31B As shown, the image capture system lens group can be along the optical path from the object (not shown) to the imaging surface IMG, and has a first optical axis OA1, an optical path turning element LF and a second optical axis OA2 in sequence, wherein the optical path turning element LF can be as shown in FIG. Fig.31A As shown, it is arranged between the object and the lens group LG of the image capture system lens group, or as shown Fig.31B The lens group LG of the image capture system lens group and the imaging surface IMG are shown. Fig.31C , which illustrates a schematic diagram of a configuration relationship of two optical path turning elements LF1 and LF2 in an image capture system lens group according to the present disclosure. Fig.31CAs shown, the image capture system lens group can also be arranged along the optical path from the object (not shown) to the imaging surface IMG, and sequentially has a first optical axis OA1, an optical path turning element LF1, a second optical axis OA2, an optical path turning element LF2 and a third optical axis OA3, wherein the optical path turning element LF1 is arranged between the object and the lens group LG of the image capture system lens group, and the optical path turning element LF2 is arranged between the lens group LG of the image capture system lens group and the imaging surface IMG. The image capture system lens group can also be selectively configured with more than three optical path turning elements, and the present disclosure is not limited to the type, quantity and position of the optical path turning elements disclosed in the drawings.

[0172] In addition, in the image capture system lens assembly provided by the present disclosure, at least one aperture stop, such as an aperture stop, a glare stop, or a field stop, can be provided as required to help reduce stray light and improve image quality.

[0173] In the image capture system lens set provided by the present disclosure, the aperture configuration can be a front aperture or a center aperture, wherein the front aperture means that the aperture is set between the object and the first lens, and the center aperture means that the aperture is set between the first lens and the imaging surface. If the aperture is a front aperture, the exit pupil of the image capture system lens set can be at a longer distance from the imaging surface, so that it has a telecentric effect and can increase the efficiency of the CCD or CMOS of the electronic photosensitive element in receiving the image; if it is a center aperture, it helps to expand the field of view of the image capture system lens set, so that it has the advantage of a wide-angle lens.

[0174] The present disclosure may appropriately set a variable aperture element, which may be a mechanical component or a light control element, which can control the size and shape of the aperture by electricity or electrical signals. The mechanical component may include movable parts such as a blade set and a shielding plate; the light control element may include a filter element, an electrochromic material, a liquid crystal layer and other shielding materials. The variable aperture element can enhance the image adjustment capability by controlling the amount of light entering the image or the exposure time. In addition, the variable aperture element may also be the aperture of the present disclosure, which can adjust the image quality, such as the depth of field or the exposure speed, by changing the aperture value.

[0175] The image capture system lens assembly of the present disclosure may include at least one optical lens, optical element or carrier, at least one surface of which has a low-reflection layer, and the low-reflection layer can effectively reduce the stray light generated by the reflection of light at the interface. The low-reflection layer can be arranged on the non-effective area of ​​the object side surface or the image side surface of the optical lens, or the connecting surface between the object side surface and the image side surface; the optical element can be a shading element, an annular spacer element, a lens barrel element, a flat glass (Cover glass), a blue glass (Blue glass), a filter element (Filter, Color filter), an optical path turning element, a prism or a mirror, etc.; the carrier can be a lens assembly lens mount, a micro lens (Micro lens) arranged on a photosensitive element, the periphery of a photosensitive element substrate, or a glass sheet used to protect a photosensitive element, etc.

[0176] The image capture system lens assembly provided by the present disclosure can also be widely used in three-dimensional (3D) image capture, digital cameras, mobile products, digital tablets, smart TVs, network monitoring equipment, somatosensory game consoles, driving recorders, reversing imaging devices, wearable products, drones and other electronic devices.

[0177] The present disclosure provides an imaging device, comprising an image capturing system lens assembly and an electronic photosensitive element as described above, wherein the electronic photosensitive element is disposed on the imaging surface of the image capturing system lens assembly. Through the configuration of the lens refractive power, surface shape, and lens spacing in the image capturing system lens assembly, a better viewing angle can be provided and high imaging quality can be maintained. In addition, it can be applied to the main lens of an aerial camera, which has a wide shooting field of view and maintains high imaging quality under a wide range of temperature environments. Preferably, the imaging device can further include a lens barrel, a supporting device, or a combination thereof.

[0178] The present disclosure provides an electronic device, comprising the aforementioned imaging device, thereby improving the imaging quality. Preferably, the aforementioned electronic device may further comprise a control unit, a display unit, a storage unit, a random access memory or a combination thereof.

[0179] According to the above implementation modes, specific embodiments are proposed below and described in detail with reference to the accompanying drawings.

[0180] <First Embodiment>

[0181] Please refer to Figure 1 as well as Figure 2 ,in Figure 1 FIG. 1 is a schematic diagram showing an image capturing device 1 according to a first embodiment of the present disclosure. Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment. Figure 1It can be seen that the image capturing device 1 of the first embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, a third lens E3, an aperture ST, a fourth lens E4, a stop S1, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0182] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0183] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0184] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical. Fig.23 , which is a schematic diagram of the inflection point IP and critical point CP of each lens according to the first embodiment. The image side surface of the third lens includes an inflection point IP (marked at Fig.23 ).

[0185] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the image-side surface of the fourth lens includes an inflection point IP (marked at Fig.23 ).

[0186] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the image-side surface of the fifth lens includes an inflection point IP (marked at Fig.23 ).

[0187] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the sixth lens includes an inflection point IP (marked at Fig.23 ) and a critical point CP (marked at Fig.23 ), the image side surface of the sixth lens includes an inflection point IP (marked at Fig.23 ).

[0188] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the seventh lens includes two inflection points IP (marked at Fig.23 ) and a critical point CP (marked at Fig.23 ), the image side surface of the seventh lens includes two inflection points IP (marked at Fig.23 ) and a critical point CP (marked at Fig.23 ).

[0189] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the eighth lens includes five inflection points IP (marked on Fig.23 ) and a critical point CP (marked at Fig.23 ), the image side surface of the eighth lens includes an inflection point IP (marked at Fig.23 ) and a critical point CP (marked at Fig.23 ).

[0190] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0191] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:

[0192]

[0193] ;in:

[0194] X: displacement parallel to the optical axis from the intersection of the aspheric surface and the optical axis to the point on the aspheric surface at a distance Y from the optical axis;

[0195] Y: the vertical distance between the point on the aspheric curve and the optical axis;

[0196] R: radius of curvature;

[0197] k: cone coefficient; and

[0198] Ai: i-th order aspheric coefficient.

[0199] In the image capture system lens set of the first embodiment, the focal length of the image capture system lens set is f, the aperture value (f-number) of the image capture system lens set is Fno, and half of the maximum viewing angle of the image capture system lens set is HFOV, and its values ​​are as follows: f=5.39mm; Fno=2.23; and HFOV=42.9 degrees.

[0200] In the image capture system lens assembly of the first embodiment, the maximum viewing angle of the image capture system lens assembly is FOV, which satisfies the following condition: FOV=85.8 degrees.

[0201] In the image capture system lens assembly of the first embodiment, the distance between the object side surface of the first lens and the imaging surface IMG on the optical axis is TL, and the maximum image height of the image capture system lens assembly is ImgH, which satisfies the following condition: TL / ImgH=2.81.

[0202] In the image capture system lens assembly of the first embodiment, the distance from the aperture ST to the image side surface of the eighth lens on the optical axis is SD, and the distance from the object side surface of the first lens to the image side surface of the eighth lens on the optical axis is TD, which satisfies the following condition: SD / TD=0.44.

[0203] In the image capture system lens set of the first embodiment, the focal length of the image capture system lens set is f, the interval between the first lens E1 and the second lens E2 on the optical axis is T12, and the distance between the image side surface of the eighth lens and the imaging surface IMG on the optical axis is BL, which satisfies the following conditions: T12 / f=0.44; and T12 / BL=2.14.

[0204] In the image capture system lens assembly of the first embodiment, the focal length of the first lens E1 is f1, the focal length of the second lens E2 is f2, the focal length of the third lens E3 is f3, and the focal length of the fifth lens E5 is f5, which satisfies the following conditions: |f2 / f1|=0.80; and |f5 / f3|=0.14.

[0205] In the image capture system lens set of the first embodiment, the focal length of the image capture system lens set is f, the curvature radius of the object side surface of the fifth lens is R9, and the curvature radius of the image side surface of the fifth lens is R10, which satisfies the following conditions: |f / R10|=1.00; and |f / R9|+|f / R10|=2.40.

[0206] In the image capture system lens group of the first embodiment, the focal length of the image capture system lens group is f, the focal length of the third lens E3 is f3, the focal length of the fourth lens E4 is f4, the focal length of the fifth lens E5 is f5, and the focal length of the sixth lens E6 is f6, which satisfies the following condition: (|f / f3|+|f / f6|) / (|f / f4|+|f / f5|)=0.19.

[0207] In the image capture system lens assembly of the first embodiment, the curvature radius of the object side surface of the first lens is R1, and the curvature radius of the object side surface of the fifth lens is R9, which satisfies the following condition: (R1-R9) / (R1+R9)=0.63.

[0208] In the image capture system lens assembly of the first embodiment, the curvature radius of the object side surface of the first lens is R1, and the curvature radius of the image side surface of the eighth lens is R16, which satisfies the following condition: (R1-R16) / (R1+R16)=0.75.

[0209] In the image capture system lens assembly of the first embodiment, the curvature radius of the object side surface of the second lens is R3, and the curvature radius of the image side surface of the second lens is R4, which satisfies the following condition: (R3-R4) / (R3+R4)=-1.42.

[0210] In the image capture system lens assembly of the first embodiment, the curvature radius of the image-side surface of the fifth lens is R10, and the curvature radius of the object-side surface of the seventh lens is R13, which satisfies the following condition: R10 / R13=-0.31.

[0211] In the image capture system lens set of the first embodiment, the distance on the optical axis from the object side surface of the first lens to the image side surface of the second lens is Dr1r4, and the distance on the optical axis from the object side surface of the sixth lens to the image side surface of the eighth lens is Dr11r16, which satisfies the following condition: Dr1r4 / Dr11r16=1.79; specifically, the interval between the first lens E1 and the second lens E2 on the optical axis is T12, and the interval between the sixth lens E6 and the seventh lens E7 on the optical axis is T67, The interval between the seventh lens E7 and the eighth lens E8 on the optical axis is T78, the thickness of the first lens E1 on the optical axis is CT1, the thickness of the second lens E2 on the optical axis is CT2, the thickness of the sixth lens E6 on the optical axis is CT6, the thickness of the seventh lens E7 on the optical axis is CT7, and the thickness of the eighth lens E8 on the optical axis is CT8, Dr1r4 / Dr11r16=(CT1+T12+CT2) / (CT6+T67+CT7+T78+CT8).

[0212] In the image capture system lens assembly of the first embodiment, the thickness of the third lens E3 on the optical axis is CT3, the thickness of the fourth lens E4 on the optical axis is CT4, the thickness of the fifth lens E5 on the optical axis is CT5, the interval between the fifth lens E5 and the sixth lens E6 on the optical axis is T56, and the interval between the seventh lens E7 and the eighth lens E8 on the optical axis is T78, which satisfy the following conditions: CT4 / CT5=0.17; CT5 / CT3=2.58; CT5 / T78=1.63; and T56 / CT5=0.66.

[0213] In the image capturing system lens assembly of the first embodiment, the refractive index of the second lens E2 is N2, which satisfies the following condition: N2=1.802.

[0214] In the image capture system lens assembly of the first embodiment, the Abbe number of the eighth lens element E8 is V8, which satisfies the following condition: V8=25.6.

[0215] In the image capture system lens assembly of the first embodiment, the Abbe number of the third lens E3 is V3, the Abbe number of the fourth lens E4 is V4, and the Abbe number of the sixth lens E6 is V6, which satisfy the following conditions: V3 / V4=2.9; and V3 / V6=2.4.

[0216] Mate Reference Fig.24 , which is a schematic diagram showing some parameters according to the first embodiment. Fig.24 It can be seen that in the image capture system lens group of the first embodiment, the maximum effective radius of the object side surface of the first lens is Y1R1, the maximum effective radius of the object side surface of the fifth lens is Y5R1, the maximum effective radius of the image side surface of the eighth lens is Y8R2, and the maximum image height of the image capture system lens group is ImgH, which satisfies the following conditions: Y1R1 / Y8R2=1.27; and Y5R1 / ImgH=0.36.

[0217] In the image capture system lens set of the first embodiment, the horizontal displacement from the intersection of the image side surface of the first lens on the optical axis to the maximum effective radius position of the image side surface of the first lens on the optical axis is SAG1R2 (indicated by Fig.24 ), the thickness of the first lens E1 on the optical axis is CT1, which satisfies the following condition: SAG1R2 / CT1=3.75.

[0218] Please refer to the following Table 1A and Table 1B.

[0219]

[0220]

[0221]

[0222]

[0223] Table 1A Figure 1 The first embodiment provides detailed structural data, where the units of the radius of curvature, thickness and focal length are in mm, and surfaces 0-21 represent the surfaces from the object side to the image side in sequence, and the refractive index is the refractive index measured at the reference wavelength. Table 1B is the aspheric surface data of the first embodiment, where k represents the cone coefficient in the aspheric curve equation, and A4-A26 represents the 4th-26th order aspheric surface coefficients of each surface. In addition, the following tables of the embodiments correspond to the schematic diagrams and aberration curves of the embodiments, and the definitions of the data in the tables are the same as those in Tables 1A and 1B of the first embodiment, and are not repeated here.

[0224] <Second Embodiment>

[0225] Please refer to Figure 3 as well as Figure 4 ,in Figure 3 FIG. 1 is a schematic diagram showing an imaging device 2 according to a second embodiment of the present disclosure. Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Figure 3 It can be seen that the imaging device 2 of the second embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0226] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0227] The second lens E2 has positive refractive power and is made of glass, and its object side surface is convex near the optical axis, and its image side surface is convex near the optical axis, and both are aspherical. In addition, the object side surface of the second lens includes an inflection point.

[0228] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, and both are aspherical.

[0229] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0230] The fifth lens E5 has positive refractive power and is made of plastic, its object side surface near the optical axis is convex, its image side surface near the optical axis is convex, and both are aspherical. In addition, the object side surface of the fifth lens includes an inflection point.

[0231] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0232] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes two inflection points and a critical point.

[0233] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical. In addition, the object-side surface of the eighth lens includes two inflection points and a critical point, and the image-side surface of the eighth lens includes an inflection point and a critical point.

[0234] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0235] Please refer to Table 2A and Table 2B below.

[0236]

[0237]

[0238]

[0239]

[0240]

[0241] In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0242] The following data in Table 2C can be derived by combining Table 2A and Table 2B:

[0243]

[0244] <Third Embodiment>

[0245] Please refer to Figure 5 as well as Figure 6 ,in Figure 5 FIG. 1 is a schematic diagram showing an imaging device 3 according to a third embodiment of the present disclosure. Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment. Figure 5It can be seen that the imaging device 3 of the third embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, an aperture S2, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0246] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0247] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are aspherical.

[0248] The third lens E3 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the third lens includes two inflection points.

[0249] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0250] The fifth lens element E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are aspherical.

[0251] The sixth lens E6 has negative refractive power and is made of plastic, its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the sixth lens includes two inflection points and a critical point.

[0252] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is convex, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes an inflection point.

[0253] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical. In addition, the object-side surface of the eighth lens includes two inflection points and a critical point, and the image-side surface of the eighth lens includes two inflection points and a critical point.

[0254] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0255] Please refer to Table 3A and Table 3B below.

[0256]

[0257]

[0258]

[0259]

[0260] In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0261] The following data in Table 3C can be derived by combining Table 3A and Table 3B:

[0262]

[0263]

[0264] <Fourth Embodiment>

[0265] Please refer to Figure 7 as well as Figure 8 ,in Figure 7 FIG. 4 is a schematic diagram showing an image capturing device 4 according to a fourth embodiment of the present disclosure. Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment. Figure 7 It can be seen that the image capturing device 4 of the fourth embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0266] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0267] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0268] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the third lens includes an inflection point, and the image side surface of the third lens includes an inflection point.

[0269] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0270] The fifth lens E5 has positive refractive power and is made of plastic, its object side surface near the optical axis is convex, its image side surface near the optical axis is convex, and both are aspherical. In addition, the image side surface of the fifth lens includes an inflection point.

[0271] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0272] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0273] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical. In addition, the object-side surface of the eighth lens includes three inflection points and a critical point, and the image-side surface of the eighth lens includes three inflection points and a critical point.

[0274] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0275] Please refer to the following Table 4A and Table 4B.

[0276]

[0277]

[0278]

[0279]

[0280] In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0281] The following data in Table 4C can be derived by combining Table 4A and Table 4B:

[0282]

[0283]

[0284] <Fifth Embodiment>

[0285] Please refer to Fig. 9 as well as Fig.10 ,in Fig. 9 FIG. 5 is a schematic diagram showing an imaging device 5 according to a fifth embodiment of the present disclosure. Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment. Fig. 9 It can be seen that the imaging device 5 of the fifth embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0286] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0287] The second lens E2 has positive refractive power and is made of glass. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the second lens includes an inflection point, and the image side surface of the second lens includes an inflection point.

[0288] The third lens E3 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the third lens includes two inflection points.

[0289] The fourth lens E4 has negative refractive power and is made of plastic, its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the fourth lens includes an inflection point and a critical point.

[0290] The fifth lens element E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are aspherical.

[0291] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0292] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes an inflection point and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0293] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical. In addition, the object-side surface of the eighth lens includes two inflection points and a critical point, and the image-side surface of the eighth lens includes two inflection points and a critical point.

[0294] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0295] Please refer to the following Table 5A and Table 5B.

[0296]

[0297]

[0298]

[0299]

[0300] In the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0301] The following data in Table 5C can be derived by combining Table 5A and Table 5B:

[0302]

[0303]

[0304] <Sixth Embodiment>

[0305] Please refer to Fig.11 as well as Fig.12 ,in Fig.11 FIG. 1 is a schematic diagram showing an imaging device 6 according to a sixth embodiment of the present disclosure. Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment. Fig.11 It can be seen that the image capturing device 6 of the sixth embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0306] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0307] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0308] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical.

[0309] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point, and the image side surface of the fourth lens includes an inflection point and a critical point.

[0310] The fifth lens E5 has positive refractive power and is made of plastic, its object side surface near the optical axis is convex, its image side surface near the optical axis is convex, and both are aspherical. In addition, the object side surface of the fifth lens includes an inflection point.

[0311] The sixth lens E6 has negative refractive power and is made of plastic, its object side surface near the optical axis is concave, its image side surface near the optical axis is convex, and both are aspherical. In addition, the image side surface of the sixth lens includes an inflection point and a critical point.

[0312] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes an inflection point and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0313] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical. In addition, the object-side surface of the eighth lens includes two inflection points and a critical point, and the image-side surface of the eighth lens includes two inflection points and a critical point.

[0314] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0315] Please refer to the following Table 6A and Table 6B.

[0316]

[0317]

[0318]

[0319]

[0320] In the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0321] The following data in Table 6C can be derived by combining Table 6A and Table 6B:

[0322]

[0323] <Seventh Embodiment>

[0324] Please refer to Fig.13 as well as Fig.14 ,in Fig.13 FIG. 1 is a schematic diagram showing an imaging device 7 according to a seventh embodiment of the present disclosure. Fig.14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment. Fig.13It can be seen that the image capturing device 7 of the seventh embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, an aperture S2, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0325] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0326] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0327] The third lens E3 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the third lens includes an inflection point, and the image side surface of the third lens includes an inflection point.

[0328] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0329] The fifth lens E5 has positive refractive power and is made of plastic, its object side surface near the optical axis is convex, its image side surface near the optical axis is convex, and both are aspherical. In addition, the object side surface of the fifth lens includes an inflection point.

[0330] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0331] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0332] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical. In addition, the object-side surface of the eighth lens includes three inflection points and a critical point, and the image-side surface of the eighth lens includes an inflection point and a critical point.

[0333] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0334] Please refer to Table 7A and Table 7B below.

[0335]

[0336]

[0337]

[0338]

[0339]

[0340] In the seventh embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0341] The following data in Table 7C can be derived by combining Table 7A and Table 7B:

[0342]

[0343] <Eighth Embodiment>

[0344] Please refer to Fig.15 as well as Fig.16 ,in Fig.15 FIG. 8 is a schematic diagram showing an imaging device 8 according to an eighth embodiment of the present disclosure. Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment. Fig.15 It can be seen that the image capturing device 8 of the eighth embodiment includes an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, an aperture S2, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0345] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0346] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0347] The third lens E3 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the third lens includes an inflection point.

[0348] The fourth lens E4 has negative refractive power and is made of plastic, its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the fourth lens includes an inflection point and a critical point.

[0349] The fifth lens element E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are aspherical.

[0350] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0351] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes two inflection points and a critical point.

[0352] The eighth lens E8 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the eighth lens includes two inflection points, and the image side surface of the eighth lens includes three inflection points and a critical point.

[0353] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0354] Please refer to the following Table 8A and Table 8B.

[0355]

[0356]

[0357]

[0358]

[0359]

[0360] In the eighth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0361] The following data in Table 8C can be derived by combining Table 8A and Table 8B:

[0362]

[0363] <Ninth Embodiment>

[0364] Please refer to Fig.17 as well as Fig.18 ,in Fig.17 FIG. 1 is a schematic diagram showing an imaging device 9 according to a ninth embodiment of the present disclosure. Fig.18 From left to right are the spherical aberration, astigmatism and distortion curves of the ninth embodiment. Fig.17 It can be seen that the imaging device 9 of the ninth embodiment includes an image capturing system lens group (not labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0365] The first lens E1 has negative refractive power and is made of glass, and its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the first lens includes an inflection point.

[0366] The second lens E2 has positive refractive power and is made of glass, and its object side surface is convex near the optical axis, and its image side surface is convex near the optical axis, and both are aspherical. In addition, the image side surface of the second lens includes an inflection point.

[0367] The third lens E3 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the third lens includes an inflection point.

[0368] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0369] The fifth lens E5 has positive refractive power and is made of plastic, its object side surface near the optical axis is convex, its image side surface near the optical axis is convex, and both are aspherical. In addition, the object side surface of the fifth lens includes an inflection point.

[0370] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0371] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0372] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical. In addition, the object-side surface of the eighth lens includes three inflection points and a critical point, and the image-side surface of the eighth lens includes three inflection points and a critical point.

[0373] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0374] Please refer to the following Table 9A and Table 9B.

[0375]

[0376]

[0377]

[0378]

[0379] In the ninth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0380] The following data in Table 9C can be derived by combining Table 9A and Table 9B:

[0381]

[0382]

[0383] <Tenth Embodiment>

[0384] Please refer to Fig.19 as well as Fig. 20 ,in Fig.19 FIG. 1 is a schematic diagram showing an imaging device 10 according to a tenth embodiment of the present disclosure. Fig. 20 From left to right are the spherical aberration, astigmatism and distortion curves of the tenth embodiment. Fig.19 It can be seen that the image capturing device 10 of the tenth embodiment includes an image capturing system lens group (not labeled) and an electronic photosensitive element IS. The image capturing system lens group includes a first lens E1, a second lens E2, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group includes eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there is no other interpolated lens between the eight lenses.

[0385] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0386] The second lens E2 has positive refractive power and is made of glass, and its object side surface is convex near the optical axis, and its image side surface is convex near the optical axis, and both are aspherical. In addition, the image side surface of the second lens includes an inflection point.

[0387] The third lens E3 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0388] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0389] The fifth lens E5 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is convex, and both are aspherical. In addition, the object side surface of the fifth lens includes an inflection point, and the image side surface of the fifth lens includes an inflection point.

[0390] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the sixth lens includes an inflection point and a critical point, and the image side surface of the sixth lens includes two inflection points and a critical point.

[0391] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes three inflection points and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0392] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical. In addition, the object-side surface of the eighth lens includes three inflection points and a critical point, and the image-side surface of the eighth lens includes three inflection points and a critical point.

[0393] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0394] Please refer to the following Table 10A and Table 10B.

[0395]

[0396]

[0397]

[0398]

[0399]

[0400] In the tenth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0401] The following data in Table 10C can be derived by combining Table 10A and Table 10B:

[0402]

[0403] <Eleventh Embodiment>

[0404] Please refer to Figure 21 and Fig. 22 , wherein FIG. 21 is a schematic diagram of an imaging device 11 according to the eleventh embodiment of the present disclosure, Fig. 22From left to right are the spherical aberration, astigmatism and distortion curves of the eleventh embodiment. As can be seen from FIG. 21, the image capturing device 11 of the eleventh embodiment comprises an image capturing system lens group (not separately labeled) and an electronic photosensitive element IS. The image capturing system lens group comprises a first lens E1, a second lens E2, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter element E9 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the image capturing system lens group, wherein the image capturing system lens group comprises eight lenses (E1, E2, E3, E4, E5, E6, E7, E8), and there are no other interpolated lenses between the eight lenses.

[0405] The first lens E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are spherical.

[0406] The second lens E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0407] The third lens E3 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the third lens includes two inflection points.

[0408] The fourth lens E4 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fourth lens includes an inflection point and a critical point, and the image side surface of the fourth lens includes an inflection point.

[0409] The fifth lens E5 has positive refractive power and is made of plastic, its object side surface near the optical axis is convex, its image side surface near the optical axis is convex, and both are aspherical. In addition, the image side surface of the fifth lens includes an inflection point.

[0410] The sixth lens E6 has negative refractive power and is made of plastic, its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the sixth lens includes two inflection points and a critical point.

[0411] The seventh lens E7 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the seventh lens includes two inflection points and a critical point, and the image side surface of the seventh lens includes an inflection point and a critical point.

[0412] The eighth lens E8 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical. In addition, the object-side surface of the eighth lens includes three inflection points and a critical point, and the image-side surface of the eighth lens includes an inflection point and a critical point.

[0413] The filter element E9 is made of glass, and is disposed between the eighth lens E8 and the imaging plane IMG without affecting the focal length of the lens group of the image capturing system.

[0414] Please refer to the following Table 11A and Table 11B.

[0415]

[0416]

[0417]

[0418]

[0419]

[0420] In the eleventh embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0421] The following data in Table 11C can be derived by combining Table 11A and Table 11B:

[0422]

[0423] <Twelfth Embodiment>

[0424] Please refer to Fig.25 , which is a three-dimensional schematic diagram of an image capturing device 100 according to the twelfth embodiment of the present disclosure. Fig.25 It can be seen that the imaging device 100 of the twelfth embodiment is a camera module, and the imaging device 100 includes an imaging lens 101, a driving device group 102, and an electronic photosensitive element 103, wherein the imaging lens 101 includes the image capture system lens group of the present disclosure and a lens barrel (not separately labeled) carrying the image capture system lens group. The imaging device 100 uses the imaging lens 101 to focus and photograph the object and cooperates with the driving device group 102 to focus the image, and finally forms an image on the electronic photosensitive element 103 and outputs the image data.

[0425] The driving device group 102 can be an auto-focus module, and its driving method can use a driving system such as a voice coil motor, a micro-electromechanical system, a piezoelectric system, or a memory metal. The driving device group 102 can allow the image capture system lens group to obtain a better imaging position, and can provide a clear image of the subject at different object distances.

[0426] The image capturing device 100 may be equipped with an electronic photosensitive element 103 (such as CMOS, CCD) with good sensitivity and low noise, which is disposed on the imaging surface of the image capturing system lens group, and can truly present the good imaging quality of the image capturing system lens group. In addition, the image capturing device 100 may further include an image stabilization module 104, which may be a kinetic energy sensing element such as an accelerometer, a gyroscope or a Hall Effect Sensor. In the twelfth embodiment, the image stabilization module 104 is a gyroscope, but is not limited thereto. By adjusting the changes in different axial directions of the image capturing system lens group to compensate for the blurred image caused by shaking at the moment of shooting, the imaging quality of dynamic and low-light scene shooting is further improved, and advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) are provided.

[0427] <Thirteenth Embodiment>

[0428] Please refer to Fig.26A , Fig.26B and Fig.26C ,in Fig.26A A schematic diagram showing one side of an electronic device 200 according to a thirteenth embodiment of the present disclosure is shown. Fig.26B Draw according to Fig.26A A schematic diagram of the other side of the electronic device 200, Fig.26C Draw according to Fig.26A A schematic diagram of a system of an electronic device 200 is shown in FIG. Fig.26A , Fig.26B and Fig.26CIt can be seen that the electronic device 200 of the thirteenth embodiment is a smart phone, and the electronic device 200 includes image capturing devices 100, 110, 120, 130, 140, a flash module 201, a focus assist module 202, an image signal processor 203 (Image Signal Processor; ISP), a user interface 204, and an image software processor 205, wherein the image capturing devices 120, 130, 140 are front lenses. When the user shoots a subject 206 through the user interface 204, the electronic device 200 uses the image capturing devices 100, 110, 120, 130, 140 to focus and capture images, activates the flash module 201 for fill light, and uses the subject distance information provided by the focus assist module 202 for rapid focusing, and the image signal processor 203 and the image software processor 205 perform image optimization processing to further improve the image quality produced by the image lens. The focus assist module 202 may use an infrared or laser focus assist system to achieve fast focus, and the user interface 204 may use a touch screen or a physical capture button to perform image capture and image processing in conjunction with the various functions of the image processing software.

[0429] At least one of the imaging devices 100, 110, 120, 130, and 140 in the thirteenth embodiment may include the image capture system lens group of the present disclosure, and may be the same as or have a similar structure to the imaging device 100 in the aforementioned twelfth embodiment, which will not be described in detail here. In detail, the imaging devices 100 and 110 in the thirteenth embodiment may be a wide-angle imaging device and an ultra-wide-angle imaging device, respectively, or may be a wide-angle imaging device and a telephoto imaging device, respectively, and the imaging devices 120, 130, and 140 may be a wide-angle imaging device, an ultra-wide-angle imaging device, and a TOF module (Time-Of-Flight) respectively, but are not limited to this configuration. In addition, the connection relationship between the imaging devices 110, 120, 130, and 140 and other components can be the same as Fig.26C The imaging device 100 shown in the figure is the same as that in the figure, or is adaptively adjusted according to the type of imaging device, and is not further illustrated or described in detail herein.

[0430] <Fourteenth Embodiment>

[0431] Please refer to Fig. 27 , which is a schematic diagram of one side of an electronic device 300 according to the fourteenth embodiment of the present disclosure. The electronic device 300 of the fourteenth embodiment is a smart phone, and the electronic device 300 includes imaging devices 310 , 320 , 330 and a flash module 301 .

[0432] The electronic device 300 of the fourteenth embodiment may include the same or similar elements as those in the aforementioned thirteenth embodiment, and the connection relationship between the imaging devices 310, 320, 330 and other elements may also be the same or similar to that disclosed in the thirteenth embodiment, which will not be described in detail here. The imaging devices 310, 320, 330 in the fourteenth embodiment may all include the image capture system lens group of the present disclosure, and may all be the same as or have a similar structure to the imaging device 100 in the aforementioned twelfth embodiment, which will not be described in detail here. In detail, the imaging device 310 may be an ultra-wide-angle imaging device, the imaging device 320 may be a wide-angle imaging device, the imaging device 330 may be a telephoto imaging device (which may include an optical path turning element), or may be another type of imaging device, and is not limited to this configuration.

[0433] <Fifteenth Embodiment>

[0434] Please refer to Fig.28 , which is a schematic diagram of one side of an electronic device 400 according to the fifteenth embodiment of the present disclosure. The electronic device 400 of the fifteenth embodiment is a smart phone, and the electronic device 400 includes imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and a flash module 401.

[0435] The electronic device 400 of the fifteenth embodiment may include the same or similar components as those in the thirteenth embodiment, and the connection relationship between the image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and the flash module 401 and other components may also be the same or similar to those disclosed in the thirteenth embodiment, and will not be described in detail here. The image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 in the fifteenth embodiment may all include the image capturing system lens group of the present disclosure, and may all be the same or have a similar structure as the image capturing device 100 in the twelfth embodiment, and will not be described in detail here.

[0436] In detail, the imaging devices 410 and 420 may be ultra-wide-angle imaging devices, respectively; the imaging devices 430 and 440 may be wide-angle imaging devices, respectively; the imaging devices 450 and 460 may be telephoto imaging devices, respectively; the imaging devices 470 and 480 may be telephoto imaging devices (which may include optical path turning elements), respectively; the imaging device 490 may be a TOF module, or may be another type of imaging device, and is not limited to this configuration.

[0437] <Sixteenth Embodiment>

[0438] Please refer to Fig.29A as well as Fig.29B ,in Fig.29AA schematic diagram showing one side of an electronic device 500 according to a sixteenth embodiment of the present disclosure is shown. Fig.29B Draw according to Fig.29A Schematic diagram of the other side of the electronic device 500. Fig.29A as well as Fig.29B It can be seen that the electronic device 500 of the sixteenth embodiment is a smart phone, and the electronic device 500 includes imaging devices 510 , 520 , 530 , 540 and a user interface 504 .

[0439] The electronic device 500 of the sixteenth embodiment may include the same or similar components as those in the thirteenth embodiment, and the connection relationship between the imaging devices 510, 520, 530, 540 and the user interface 504 and other components may also be the same or similar to that disclosed in the thirteenth embodiment, and will not be further described here. In detail, the imaging device 510 may correspond to a non-circular opening on the outside of the electronic device 500 to capture images, and the imaging devices 520, 530, 540 are respectively telephoto imaging devices, wide-angle imaging devices, and ultra-wide-angle imaging devices, or may be other types of imaging devices, and are not limited to this configuration.

[0440] <Seventeenth Embodiment>

[0441] Please refer to Fig.30 , which illustrates a three-dimensional schematic diagram of an electronic device 600 according to the seventeenth embodiment of the present disclosure. Fig.30 It can be seen that the electronic device 600 of the seventeenth embodiment is a drone, which includes an imaging device 610. The imaging device 610 may include the image capture system lens set of the present disclosure, and may be the same as or have a similar structure to the imaging device 100 in the twelfth embodiment, and will not be described in detail here.

[0442] Although the present disclosure has been disclosed in the above implementation mode, it is not intended to limit the present disclosure. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the definition of the attached claims.

Claims

1. An image capture system lens assembly, characterized in that: It includes eight lenses, and the eight lenses are arranged from the object side to the image side as follows: A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; Among them, the image-side surface of the first lens is concave near the optical axis; The second lens has a positive refractive power; The fourth lens has a negative refractive power; The fifth lens has a positive refractive power; The eighth lens has a negative refractive power, its image-side surface is concave near the optical axis, and its image-side surface includes at least one inflection point; Among them, the lens group of the image capture system further includes an aperture. The distance from the aperture to the image-side surface of the eighth lens on the optical axis is SD, the distance from the object-side surface of the first lens to the image-side surface of the eighth lens on the optical axis is TD, the focal length of the lens group of the image capture system is f, the focal length of the first lens is f1, the focal length of the second lens is f2, and the distance between the first lens and the second lens on the optical axis is T12. The radius of curvature of the image-side surface of the fifth lens is R10, which satisfies the following conditions: 0.20 < T12 / f < 2.50; 0.25 < |f2 / f1| < 1.40; 0.01 < SD / TD < 0.70; and 0.40 < |f / R10| < 2.

5.

2. The image capture system lens assembly as claimed in claim 1, wherein: The focal length of the lens group of the image capture system is f, and the distance between the first lens and the second lens on the optical axis is T12, which satisfies the following conditions: 0.30 < T12 / f < 1.

50.

3. The image capture system lens assembly as claimed in claim 1, wherein: The focal length of the lens group of the image capture system is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, which satisfies the following conditions: 0 < (|f / f3| + |f / f6|) / (|f / f4| + |f / f5|) < 0.

50.

4. The image capture system lens assembly as claimed in claim 1, wherein: The object-side surface of the second lens is convex near the optical axis, the object-side surface of the fifth lens is convex near the optical axis, and the image-side surface of the fifth lens is convex near the optical axis.

5. The image capture system lens assembly as claimed in claim 1, wherein: The object-side surface of the seventh lens is convex near the optical axis; the focal length of the third lens is f3, and the focal length of the fifth lens is f5, which satisfies the following conditions: 0 < |f5 / f3| < 0.

25.

6. The image capture system lens assembly as claimed in claim 1, wherein: The distance from the object-side surface of the first lens to an imaging plane on the optical axis is TL, and the maximum image height of the lens group of the image capture system is ImgH, which satisfies the following conditions: 1.50 < TL / ImgH < 3.

50.

7. The image capture system lens assembly as claimed in claim 1, wherein: The thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, which satisfies the following conditions: 0.10 < CT4 / CT5 < 0.

40.

8. The image capture system lens assembly as claimed in claim 1, wherein: The distance between the first lens and the second lens on the optical axis is T12, and the distance from the image-side surface of the eighth lens to an imaging plane on the optical axis is BL, which satisfies the following conditions: 0.90 < T12 / BL < 5.

00.

9. The image capture system lens assembly as claimed in claim 1, wherein: The Abbe number of the eighth lens is V8, which satisfies the following conditions: 10.0<V8<40.0。 10. The image capture system lens assembly as claimed in claim 1, wherein: The distance from the object-side surface of the first lens to the image-side surface of the second lens on the optical axis is Dr1r4, and the distance from the object-side surface of the sixth lens to the image-side surface of the eighth lens on the optical axis is Dr11r16, which satisfy the following conditions: 1.20 < Dr1r4 / Dr11r16 < 2.

50.

11. The image capture system lens assembly as claimed in claim 1, wherein: The maximum effective radius of the object-side surface of the first lens is Y1R1, the maximum effective radius of the object-side surface of the fifth lens is Y5R1, the maximum effective radius of the image-side surface of the eighth lens is Y8R2, and the maximum image height of the lens group of the image capturing system is ImgH, which satisfy the following conditions: 0.80 < Y1R1 / Y8R2 < 1.50; and 0.20 < Y5R1 / ImgH < 0.

50.

12. The image capture system lens assembly as claimed in claim 1, wherein: The horizontal displacement on the optical axis from the intersection point of the image-side surface of the first lens on the optical axis to the position of the maximum effective radius of the image-side surface of the first lens is SAG1R2, and the thickness of the first lens on the optical axis is CT1, which satisfy the following conditions: 1.00 < SAG1R2 / CT1 < 4.

50.

13. An imaging device, characterized in that: Comprising: The lens group of the image capturing system as claimed in claim 1; and An electronic photosensitive element disposed on an imaging surface of the lens group of the image capturing system.

14. An electronic device, characterized in that: Comprising: The image capturing device as claimed in claim 13.

15. An image capture system lens assembly, characterized in that: Comprising eight lenses, and the eight lenses are from the object side to the image side as follows: A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; Wherein, the image-side surface of the first lens is concave near the optical axis; The object-side surface of the second lens is convex near the optical axis; The fourth lens has a negative refractive power; The image-side surface of the fifth lens is convex near the optical axis; The image-side surface of the eighth lens is concave near the optical axis, and its image-side surface includes at least one inflection point; Wherein, the focal length of the lens group of the image capturing system is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the distance between the first lens and the second lens on the optical axis is T12, the radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, which satisfy the following conditions: 0.25 < T12 / f < 2.50; 0.25 < |f2 / f1| < 1.40; and -12.00 < (R3 - R4) / (R3 + R4) < 0.

20.

16. The image capture system lens assembly as claimed in claim 15, wherein: The radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, which satisfy the following conditions: -7.00 < (R3 - R4) / (R3 + R4) < -0.

50.

17. The image capture system lens assembly as claimed in claim 15, wherein: The object-side surface of the seventh lens is convex near the optical axis, and its object-side surface includes at least one inflection point.

18. The image capture system lens assembly as claimed in claim 15, wherein: Both the first lens and the second lens are made of glass; the refractive index of the second lens is N2, which satisfy the following conditions: 1.620<N2<1.900。 19. The image capture system lens assembly as claimed in claim 15, wherein: The eighth lens has a negative refractive power; the maximum viewing angle of the lens group of the image capturing system is FOV, which satisfy the following conditions: 70.0 degrees < FOV < 120.0 degrees.

20. The image capture system lens assembly as claimed in claim 15, wherein: The radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the object-side surface of the fifth lens is R9, which satisfy the following condition: 0.10 < (R1 - R9) / (R1 + R9) < 2.

50.

21. The image capture system lens assembly as claimed in claim 15, wherein: The thickness of the fifth lens on the optical axis is CT5, and the distance between the seventh lens and the eighth lens on the optical axis is T78, which satisfy the following condition: 0.10 < CT5 / T78 < 4.

00.

22. The image capture system lens assembly as claimed in claim 15, wherein: The Abbe number of the third lens is V3, and the Abbe number of the sixth lens is V6, which satisfy the following condition: 1.5 < V3 / V6 < 3.

5.

23. An image capture system lens assembly, characterized in that: Comprising eight lenses, and the eight lenses are from the object side to the image side: A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; Wherein, the image-side surface of the first lens near the optical axis is concave; The second lens has a positive refractive power, and its object-side surface near the optical axis is convex; The fourth lens has a negative refractive power; The image-side surface of the fifth lens near the optical axis is convex; The eighth lens has a negative refractive power, its image-side surface near the optical axis is concave, and its image-side surface includes at least one inflection point; Wherein, the lens group of the image capture system further includes a diaphragm, the distance from the diaphragm to the image-side surface of the eighth lens on the optical axis is SD, the distance from the object-side surface of the first lens to the image-side surface of the eighth lens on the optical axis is TD, the focal length of the lens group of the image capture system is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the distance between the first lens and the second lens on the optical axis is T12, the radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface of the eighth lens is R16, which satisfy the following conditions: 0.28 < T12 / f < 2.00; 0.01 < |f2 / f1| < 1.40; 0.01 < SD / TD < 0.70; and 0.10 < (R1 - R16) / (R1 + R16) < 2.

00.

24. The image capture system lens assembly as claimed in claim 23, wherein: The object-side surface of the first lens near the optical axis is convex; the radius of curvature of the image-side surface of the fifth lens is R10, and the radius of curvature of the object-side surface of the seventh lens is R13, which satisfy the following condition: -2.00 < R10 / R13 < -0.

10.

25. The image capture system lens assembly as claimed in claim 23, wherein: The image-side surface of the seventh lens near the optical axis is concave, and the image-side surface of the seventh lens includes at least one inflection point; the thickness of the third lens on the optical axis is CT3, and the thickness of the fifth lens on the optical axis is CT5, which satisfy the following condition: 1.70 < CT5 / CT3 < 5.

50.

26. The image capture system lens assembly as claimed in claim 23, wherein: The focal length of the lens group of the image capture system is f, the radius of curvature of the object-side surface of the fifth lens is R9, and the radius of curvature of the image-side surface of the fifth lens is R10, which satisfy the following condition: 1.20 < |f / R9| + |f / R10| < 3.

40.

27. The image capture system lens assembly as claimed in claim 23, wherein: The aperture is located between the third lens and the fourth lens; the thickness of the fifth lens on the optical axis is CT5, and the spacing distance between the fifth lens and the sixth lens on the optical axis is T56, which satisfies the following conditions: 0.20 <T56 / CT5<1.35。 28. The image capture system lens assembly as claimed in claim 23, wherein: The Abbe number of the third lens is V3, and the Abbe number of the fourth lens is V4, which satisfies the following conditions: 1.5 <V3 / V4<3.5。 29. The image capture system lens assembly as claimed in claim 23, wherein: The focal length of the image capture system lens group is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the interval between the first lens and the second lens on the optical axis is T12, the distance between the aperture and the image side surface of the eighth lens on the optical axis is SD, the distance between the object side surface of the first lens and the image side surface of the eighth lens on the optical axis is TD, the radius of curvature of the object side surface of the first lens is R1, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the radius of curvature of the image side surface of the fifth lens is R10, and the radius of curvature of the image side surface of the eighth lens is R16, which satisfies the following conditions: 0.43≤T12 / f≤0.63; 0.61≤|f2 / f1|≤0.93; 0.38≤SD / TD≤0.49; 0.76≤|f / R10|≤1.26; -5.37≤(R3-R4) / (R3+R4)≤-0.72; and 0.35≤(R1-R16) / (R1+R16)≤1.10.

Images