Image capturing lens assembly, image capturing device and electronic device

Abstract

The present disclosure discloses an image capturing lens assembly including seven 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 and a seventh lens element in order from an object side to an image side along an optical path. Each of the seven lenses has an object-side surface facing the object-side direction and an image-side surface facing the image-side direction. The first lens element has negative refractive power. The fifth lens element has an image-side surface being convex in a paraxial region thereof. The sixth lens element has negative refractive power. The sixth lens element has an object-side surface being concave in a paraxial region thereof. At least one of the object side surface and the image side surface of at least one of the seven lenses has at least one inflection point. When specific conditions are met, the image capturing lens assembly can simultaneously meet the requirements of miniaturization, large viewing angle, low sensitivity and high imaging quality. The invention further discloses an image capturing device with the image capturing lens assembly and an electronic device with the image capturing device.

Description

Technical Field

[0001] The present disclosure relates to an image capture system lens assembly, an image capturing device and an electronic device, and in particular to an image capture system lens assembly and an image capturing device suitable for an electronic device. Background Art

[0002] As semiconductor process technology becomes more advanced, the performance of electronic photosensitive elements has been improved, and pixels can reach smaller sizes. Therefore, optical lenses with high imaging quality have become an indispensable part.

[0003] As technology advances, the application scope of electronic devices equipped with optical lenses is becoming wider, and the requirements for optical lenses are becoming more diverse. Since it is difficult for existing optical lenses to strike a balance between requirements such as imaging quality, sensitivity, aperture size, volume or viewing angle, the present invention provides an optical lens to meet the requirements. Summary of the invention

[0004] The present disclosure provides an image capture system lens assembly, an imaging device, and an electronic device. The image capture system lens assembly includes seven lenses arranged in sequence along the optical path from the object side to the image side. When certain conditions are met, the image capture system lens assembly provided by the present disclosure can simultaneously meet the requirements of miniaturization, wide viewing angle, low sensitivity, and high imaging quality.

[0005] The present disclosure provides an image capture system lens set, comprising seven lenses, wherein the seven lenses are sequentially arranged from the object side to the image side along the optical path, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. Preferably, the first lens has negative refractive power. Preferably, the image side surface of the fifth lens is convex near the optical axis. Preferably, the sixth lens has negative refractive power. Preferably, the object side surface of the sixth lens is concave near the optical axis. Preferably, at least one of the object side surface and the image side surface of at least one of the seven lenses has at least one inflection point. The focal length of the image capture system lens group is f, the distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, the spacing distance between the object side surface of the first lens and the image side surface of the third lens on the optical axis is Dr1r6, the spacing distance between the object side surface of the fourth lens and the image side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the curvature radius of the object side surface of the fourth lens is R7, the curvature radius of the image side surface of the fourth lens is R8, 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 sixth lens is R11, which preferably meets the following conditions:

[0006] 0.05 <f / TL<0.35;

[0007] 1.40 <Dr7r14 / Dr1r6<3.00;

[0008] 5.00 <V2 / N2<16.00;

[0009] 0.10<(R7-R8) / (R7+R8)<3.50; and

[0010] 0.03 <R11 / R10<5.00。

[0011] The present disclosure further provides an image capture system lens set, comprising seven lenses, wherein the seven lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens along the optical path from the object side to the image side. The seven lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. Preferably, the first lens has negative refractive power. Preferably, the fourth lens has positive refractive power. Preferably, the sixth lens has negative refractive power. Preferably, the object side surface of the sixth lens is concave near the optical axis. Preferably, at least one of the object side surface and the image side surface of at least one of the seven lenses has at least one inflection point. The focal length of the image capture system lens group is f, the distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, the spacing distance between the object side surface of the first lens and the image side surface of the third lens on the optical axis is Dr1r6, the spacing distance between the object side surface of the fourth lens and the image side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the curvature radius of the image side surface of the first lens is R2, the curvature radius of the image side surface of the second lens is R4, the curvature radius of the object side surface of the fourth lens is R7, and the curvature radius of the image side surface of the fifth lens is R10, which preferably meets the following conditions:

[0012] 0.05 <f / TL<0.30;

[0013] 1.40 <Dr7r14 / Dr1r6<3.00;

[0014] 5.00 <V2 / N2<16.00;

[0015] 0.10<(R7-R10) / (R7+R10)<3.00; and

[0016] 0<|R2 / R4|<0.80.

[0017] The present disclosure further provides an image capture system lens set, comprising seven lenses, wherein the seven lenses are sequentially arranged from the object side to the image side along the optical path, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. Preferably, the first lens has negative refractive power. Preferably, the image side surface of the fourth lens is convex near the optical axis. Preferably, the fifth lens has positive refractive power. Preferably, the object side surface of the fifth lens is convex near the optical axis. Preferably, the sixth lens has negative refractive power. Preferably, at least one of the object side surface and the image side surface of at least one of the seven lenses has at least one inflection point. 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 seventh lens is f7, the distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, the spacing distance between the object side surface of the first lens and the image side surface of the third lens on the optical axis is Dr1r6, the spacing distance between the object side surface of the fourth lens and the image side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the sum of the thickness of all lenses in the image capture system lens group on the optical axis is ΣCT, the sum of the spacing distances of all adjacent lenses in the image capture system lens group on the optical axis is ΣAT, which preferably satisfies the following conditions:

[0018] 0.05 <f / TL<0.28;

[0019] 1.40 <Dr7r14 / Dr1r6<3.00;

[0020] 5.00 <V2 / N2<16.00;

[0021] 0.10<ΣCT / ΣAT<3.00; and

[0022] 0<|f1 / f7|<1.00.

[0023] The present disclosure provides an image capturing device, which includes the aforementioned image capturing system lens set and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the image capturing system lens set.

[0024] The present disclosure provides an electronic device, which includes the aforementioned imaging device.

[0025] When f / TL meets the above conditions, it helps to achieve a balance between the total optical length and a wide viewing angle.

[0026] When Dr7r14 / Dr1r6 meet the above conditions, the center thickness of the lens group of the image capture system at the object side and the center thickness of the image side can be adjusted to help balance the spatial configuration of these lenses to reduce the system sensitivity.

[0027] When V2 / N2 meets the above conditions, the refractive index and Abbe number of the second lens can be adjusted, which helps to balance the focusing ability of the second lens for light of different wavelengths and correct chromatic aberration.

[0028] When (R7-R8) / (R7+R8) satisfies the above conditions, the curvature radius of the object-side surface of the fourth lens and the curvature radius of the image-side surface of the fourth lens can be effectively balanced, which helps to adjust the emission direction of light from the fourth lens, thereby increasing the imaging surface.

[0029] When R11 / R10 meets the above conditions, the curvature radius of the image-side surface of the fifth lens and the curvature radius of the object-side surface of the sixth lens can be adjusted to help improve the focusing quality of the imaging light, thereby improving the image curvature and reducing spherical aberration.

[0030] When (R7-R10) / (R7+R10) satisfies the above conditions, the curvature radius of the object-side surface of the fourth lens and the curvature radius of the image-side surface of the fifth lens can be effectively balanced, which helps to adjust the direction of travel of peripheral light and thereby reduce the incident angle of light on the imaging surface.

[0031] When |R2 / R4| satisfies the above conditions, the ratio of the radius of curvature of the image-side surface of the first lens to the radius of curvature of the image-side surface of the second lens can be adjusted, which helps to correct central spherical aberration and astigmatism.

[0032] When ΣCT / ΣAT meets the above conditions, the ratio of the total thickness of the lens center of the image capture system lens group to the total lens spacing can be adjusted, which helps to increase the space utilization efficiency.

[0033] When |f1 / f7| satisfies the above conditions, the refractive power ratio of the first lens and the seventh lens can be adjusted, which helps to increase the symmetry of the system and reduce the spot size of the central field of view.

[0034] The above description of the contents of the present disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present disclosure, and to provide further explanation of the claims of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of an imaging device according to a first embodiment of the present disclosure is shown.

[0036] Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment.

[0037] Figure 3 A schematic diagram of an imaging device according to a second embodiment of the present disclosure is shown.

[0038] Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment.

[0039] Figure 5 A schematic diagram of an imaging device according to a third embodiment of the present disclosure is shown.

[0040] Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment.

[0041] Figure 7 A schematic diagram of an imaging device according to a fourth embodiment of the present disclosure is shown.

[0042] Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment.

[0043] Fig. 9 A schematic diagram of an imaging device according to a fifth embodiment of the present disclosure is shown.

[0044] Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment.

[0045] Fig.11 A schematic diagram of an imaging device according to a sixth embodiment of the present disclosure is shown.

[0046] Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment.

[0047] Fig.13 A schematic diagram of an imaging device according to a seventh embodiment of the present disclosure is shown.

[0048] Fig.14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment.

[0049] Fig.15 A schematic diagram of an imaging device according to an eighth embodiment of the present disclosure is shown.

[0050] Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment.

[0051] Fig.17 A schematic three-dimensional diagram of an imaging device according to a ninth embodiment of the present disclosure is shown.

[0052] Fig.18 A three-dimensional schematic diagram of one side of an electronic device according to a tenth embodiment of the present disclosure is shown.

[0053] Fig.19 Draw Fig.18 A three-dimensional schematic diagram of the other side of the electronic device.

[0054] Fig. 20A three-dimensional schematic diagram of one side of an electronic device according to an eleventh embodiment of the present disclosure is shown.

[0055] Fig.21 Draw Fig. 20 A three-dimensional schematic diagram of the other side of the electronic device.

[0056] Fig. 22 Draw Fig. 20 A system block diagram of an electronic device.

[0057] Fig.23 A three-dimensional schematic diagram of one side of an electronic device according to a twelfth embodiment of the present disclosure is shown.

[0058] Fig.24 A three-dimensional schematic diagram of an electronic device according to a thirteenth embodiment of the present invention is shown.

[0059] Fig.25 Draw Fig.24 A schematic side view of an electronic device.

[0060] Fig.26 Draw Fig.24 A schematic top view of an electronic device.

[0061] Fig. 27 A schematic diagram illustrating all inflection points on a lens surface and all critical points on a lens surface according to a first embodiment of the present disclosure is shown.

[0062] Fig.28 FIG. 4 is a schematic diagram showing parameters Y1R1 , Y4R2 , and Sag2R1 in the first embodiment of the present disclosure.

[0063] Fig.29 A schematic diagram showing a configuration relationship of an optical path turning element in an image capture system lens assembly according to the present disclosure is shown.

[0064] Fig.30 A schematic diagram showing another configuration relationship of an optical path turning element in an image capturing system lens assembly according to the present disclosure is shown.

[0065] Fig.31 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.

[0066]

Explanation of symbols

[0067] 1,2,3,4,5,6,7,8,100,100a,100b,100c,100d,100e,100f,100g,100h,100i,100j,100k,100m,100n,100p,100q,100r,510: imaging device

[0068] 101: Imaging Lens

[0069] 102: Driving device

[0070] 103: Electronic photosensitive element

[0071] 104: Image stabilization module

[0072] 200,300,400,500:Electronic devices

[0073] 201,304: Display module

[0074] 301,401: Flash module

[0075] 302: Focus assist module

[0076] 303: Image Signal Processor

[0077] 305: Image software processor

[0078] 306: Subject

[0079] C: Tipping point

[0080] P: Inflection point

[0081] OA1: First optical axis

[0082] OA2: Second optical axis

[0083] OA3: Third optical axis

[0084] LF: Optical path turning element

[0085] LF1: First optical path turning element

[0086] LF2: Second optical path turning element

[0087] LG: Lens Group

[0088] ST: Aperture

[0089] S1, S2, S3: aperture

[0090] E1: First lens

[0091] E2: Second lens

[0092] E3: The third lens

[0093] E4: The fourth lens

[0094] E5: The fifth lens

[0095] E6: The sixth lens

[0096] E7: Seventh lens

[0097] E8: Filter element

[0098] IMG: Imaging surface

[0099] IS: Electronic photosensitive element

[0100] BL: The distance from the image side surface of the seventh lens to the imaging plane on the optical axis

[0101] CT2: The thickness of the second lens on the optical axis

[0102] CT4: Thickness of the fourth lens on the optical axis

[0103] CT5: Thickness of the fifth lens on the optical axis

[0104] CT6: Thickness of the sixth lens on the optical axis

[0105] Dr1r6: The distance between the object side surface of the first lens and the image side surface of the third lens on the optical axis

[0106] Dr7r14: The distance between the object side surface of the fourth lens and the image side surface of the seventh lens on the optical axis

[0107] f: Focal length of the image capture system lens assembly

[0108] f1: focal length of the first lens

[0109] f2: focal length of the second lens

[0110] f3: focal length of the third lens

[0111] f7: focal length of the seventh lens

[0112] Fno: Aperture value of the image capture system lens group

[0113] HFOV: Half of the maximum field of view of the image acquisition system lens group

[0114] FOV: The maximum viewing angle of the image capture system lens group

[0115] ImgH: Maximum imaging height of the image acquisition system lens group

[0116] N2: refractive index of the second lens

[0117] R2: The radius of curvature of the image-side surface of the first lens

[0118] R4: The radius of curvature of the image-side surface of the second lens

[0119] R7: The radius of curvature of the fourth lens object side surface

[0120] R8: Radius of curvature of the image-side surface of the fourth lens

[0121] R10: Radius of curvature of the image-side surface of the fifth lens

[0122] R11: The radius of curvature of the object side surface of the sixth lens

[0123] Sag2R1: The displacement parallel to the optical axis from the intersection of the second lens object side surface on the optical axis to the maximum effective radius position of the second lens object side surface

[0124] TD: The distance on the optical axis from the object side surface of the first lens to the image side surface of the seventh lens

[0125] TL: The distance from the object side surface of the first lens to the imaging surface on the optical axis

[0126] T12: The distance between the first lens and the second lens on the optical axis

[0127] T34: The distance between the third lens and the fourth lens on the optical axis

[0128] T45: The distance between the fourth lens and the fifth lens on the optical axis

[0129] T56: The distance between the fifth lens and the sixth lens on the optical axis

[0130] V2: Abbe number of the second lens

[0131] V3: Abbe number of the third lens

[0132] MAX_N237: Maximum refractive index of the second lens, the third lens, and the seventh lens

[0133] Y1R1: Maximum effective radius of the first lens object side surface

[0134] Y4R2: Maximum effective radius of the image side surface of the fourth lens

[0135] ΣAT: The sum of the distances between all adjacent lenses in the image capture system lens group on the optical axis

[0136] ΣCT: The sum of the thickness of all lenses in the image capture system lens group on the optical axis DETAILED DESCRIPTION

[0137] The image capture system lens group includes seven lenses, and the seven lenses are sequentially arranged from the object side to the image side along the optical path, namely, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens. The seven lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction.

[0138] The first lens has negative refractive power, which helps to expand the viewing angle to obtain a wider range of image information. The object side surface of the first lens can be convex near the optical axis, which helps to increase the viewing angle and increase the image size. The first lens can be made of glass, which can effectively reduce the sensitivity of the first lens to environmental factors, making it suitable for various environments with high stability. The use of glass material on the object side of the image capture system lens assembly helps to resist humid environments and prevent surface scratches, which can effectively increase the service life of electronic products.

[0139] The fourth lens may have positive refractive power, thereby helping to converge light and compress the volume of the lens group of the image capture system. The object side surface of the fourth lens may be concave near the optical axis, thereby helping to balance the incident angle of the large-angle light entering the fourth lens and avoid light divergence. The image side surface of the fourth lens may be convex near the optical axis, thereby adjusting the direction of light exiting the fourth lens and helping to increase the imaging surface.

[0140] The fifth lens may have positive refractive power, thereby helping to converge light, effectively control the direction of the light path, and achieve a balance between the viewing angle and volume distribution. The object side surface of the fifth lens may be convex near the optical axis, thereby adjusting the surface shape and refractive power of the fifth lens, thereby helping to compress the volume of the lens group of the image capture system and correct aberrations. The image side surface of the fifth lens may be convex near the optical axis, thereby providing the fifth lens with the ability to converge light, helping to avoid stray light caused by excessive incident angles of light in the peripheral area.

[0141] The sixth lens has negative refractive power, thereby balancing the refractive power of the fifth lens and reducing the length of the back focal length. The object side surface of the sixth lens can be concave near the optical axis, thereby adjusting the surface shape of the object side surface of the sixth lens so that the sixth lens cooperates with the fifth lens to reduce chromatic aberration.

[0142] The image side surface of the fifth lens and the object side surface of the sixth lens may be aspherical, and the fifth lens may be bonded to the sixth lens. Thus, the difference in refractive index between the lenses at the distance between them can be reduced by bonding the two aspherical lenses, which helps to effectively reduce the reflected light generated when the light is refracted, so as to avoid the generation of ghost images.

[0143] At least one of the object side surface and the image side surface of at least one of the first to seventh lenses has at least one inflection point, which helps to correct and compensate for the field curvature of the peripheral image. Among them, the object side surface of the second lens may have at least one inflection point, which can control the incident angle of the light incident on the object side surface of the second lens to avoid poor peripheral relative illumination caused by too large an incident angle. The object side surface of the third lens may have at least one inflection point, which can increase the freedom of design of the shape of the third lens to facilitate astigmatism correction. Among them, at least one of the object side surface and the image side surface of the seventh lens may have at least one inflection point, which helps to enhance the seventh lens's ability to correct peripheral image aberrations. Please refer to Fig. 27 , is a schematic diagram illustrating all the inflection points P on the lens surface in the first embodiment of the present disclosure. Fig. 27 In the first embodiment of the present disclosure, the inflection points located on a portion of the lens surface are shown as an exemplary illustration. However, in other embodiments of the present disclosure, each lens surface may have one or more inflection points.

[0144] The object side surface of the third lens may have at least one convex critical point at the off-axis position; thereby, the shape design of the periphery of the object side surface of the third lens can be adjusted, which helps to balance the focusing quality of incident light with a wide viewing angle. The image side surface of the seventh lens may have at least one convex critical point at the off-axis position; thereby, the incident angle of light on the imaging surface can be adjusted to control the peripheral light angle, avoid dark corners around the image, and reduce distortion. Please refer to Fig. 27 , is a schematic diagram illustrating all critical points C on the lens surface according to the first embodiment of the present disclosure. The second lens and the seventh lens in the first embodiment of the present disclosure have critical points, wherein Fig. 27 The second lens object side surface is shown to have a concave critical point C, the seventh lens object side surface is shown to have a concave critical point C, and the seventh lens image side surface is shown to have a convex critical point C. Fig. 27 The critical points located on a portion of the lens surface in the first embodiment of the present disclosure are illustrated as an exemplary illustration. However, in other embodiments of the present disclosure, each lens surface may have one or more critical points at an off-axis location.

[0145] The image capture system lens assembly may further include an aperture. The aperture may be disposed between the second lens and the fourth lens. Thus, the position of the aperture may be adjusted, which is beneficial to increase the relative illumination of the peripheral field of view and increase the viewing angle. The aperture may also be disposed between the third lens and the fourth lens.

[0146] The focal length of the lens group of the image capturing system is f, and the distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, which satisfies the following condition: 0.05 < f / TL < 0.35. Thereby, it helps to achieve a balance between the overall optical length and the large viewing angle. Among them, the following conditions can also be satisfied: 0.05 < f / TL < 0.30. Among them, the following conditions can also be satisfied: 0.05 < f / TL < 0.28. Among them, the following conditions can also be satisfied: 0.10 < f / TL < 0.25. Among them, the following conditions can also be satisfied: 0.12 < f / TL < 0.22. Among them, the following conditions can also be satisfied: 0.14 ≤ f / TL ≤ 0.19.

[0147] The distance between the object side surface of the first lens and the image side surface of the third lens on the optical axis is Dr1r6, and the distance between the object side surface of the fourth lens and the image side surface of the seventh lens on the optical axis is Dr7r14, which satisfies the following condition: 1.40 < Dr7r14 / Dr1r6 < 3.00. Thereby, the central thickness at the object side end and the central thickness at the image side end of the lens group of the image capturing system can be adjusted, which helps to balance the spatial arrangement of these lenses to reduce the system sensitivity. Among them, the following conditions can also be satisfied: 1.45 < Dr7r14 / Dr1r6 < 2.50. Among them, the following conditions can also be satisfied: 1.50 ≤ Dr7r14 / Dr1r6 ≤ 2.01.

[0148] The Abbe number of the second lens is V2, and the refractive index of the second lens is N2, which satisfies the following condition: 5.00 < V2 / N2 < 16.00. Thereby, the refractive index and the Abbe number of the second lens can be adjusted, which helps to balance the converging ability of the second lens for light of different wavelength bands and correct chromatic aberration. Among them, the following conditions can also be satisfied: 8.00 < V2 / N2 < 14.50. Among them, the following conditions can also be satisfied: 9.61 ≤ V2 / N2 ≤ 15.92.

[0149] The radius of curvature of the object side surface of the fourth lens is R7, and the radius of curvature of the image side surface of the fourth lens is R8, which can satisfy the following condition: 0.10 < (R7 - R8) / (R7 + R8) < 3.50. Thereby, the radius of curvature of the object side surface of the fourth lens and the radius of curvature of the image side surface of the fourth lens can be effectively balanced, which helps to adjust the outgoing direction of light from the fourth lens, and then increase the imaging surface. Among them, the following conditions can also be satisfied: 0.40 < (R7 - R8) / (R7 + R8) < 2.50. Among them, the following conditions can also be satisfied: 0.59 ≤ (R7 - R8) / (R7 + R8) ≤ 1.53.

[0150] 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 sixth lens is R11, which can satisfy the following conditions: 0.03 < R11 / R10 < 5.00. Thereby, the radius of curvature of the image-side surface of the fifth lens and the radius of curvature of the object-side surface of the sixth lens can be adjusted, which helps to improve the light-gathering quality of the imaging light, and further improves the image bending situation and reduces spherical aberration. Among them, the following conditions can also be satisfied: 0.20 < R11 / R10 < 3.00. Among them, the following conditions can also be satisfied: 0.50 < R11 / R10 < 2.00. Among them, the following conditions can also be satisfied: 0.89 ≤ R11 / R10 ≤ 1.75.

[0151] The radius of curvature of the object-side surface of the fourth lens is R7, and the radius of curvature of the image-side surface of the fifth lens is R10, which can satisfy the following conditions: 0.10 < (R7 - R10) / (R7 + R10) < 3.00. Thereby, the radius of curvature of the object-side surface of the fourth lens and the radius of curvature of the image-side surface of the fifth lens can be effectively balanced, which helps to adjust the traveling direction of the peripheral light, and further reduces the incident angle of the light on the imaging surface. Among them, the following conditions can also be satisfied: 0.30 < (R7 - R10) / (R7 + R10) < 2.00. Among them, the following conditions can also be satisfied: 0.45 < (R7 - R10) / (R7 + R10) < 1.80. Among them, the following conditions can also be satisfied: 0.50 < (R7 - R10) / (R7 + R10) < 1.50. Among them, the following conditions can also be satisfied: 0.74 ≤ (R7 - R10) / (R7 + R10) ≤ 1.16.

[0152] The radius of curvature of the image-side surface of the first lens is R2, and the radius of curvature of the image-side surface of the second lens is R4, which can satisfy the following conditions: 0 < |R2 / R4| < 0.80. Thereby, the ratio of the radius of curvature of the image-side surface of the first lens to the radius of curvature of the image-side surface of the second lens can be adjusted, which helps to correct the central spherical aberration and astigmatism. Among them, the following conditions can also be satisfied: 0.01 < |R2 / R4| < 0.50. Among them, the following conditions can also be satisfied: 0.03 ≤ |R2 / R4| ≤ 0.27.

[0153] The total thickness of all lenses on the optical axis in the lens group of the image capture system is ΣCT, and the total sum of the spacing distances between all adjacent lenses on the optical axis in the lens group of the image capture system is ΣAT, which can satisfy the following conditions: 0.10 < ΣCT / ΣAT < 3.00. Thereby, the ratio of the total central thickness of the lenses in the lens group of the image capture system to the total sum of the lens spacings can be adjusted, which helps to increase the space utilization efficiency. Among them, the following conditions can also be satisfied: 0.80 < ΣCT / ΣAT < 2.80. Among them, the following conditions can also be satisfied: 0.13 < ΣCT / ΣAT < 2.40. Among them, the following conditions can also be satisfied: 1.62 ≤ ΣCT / ΣAT ≤ 2.75.

[0154] The focal length of the first lens is f1, and the focal length of the seventh lens is f7, which can satisfy the following conditions: 0 < |f1 / f7| < 1.00. Thereby, the refractive power ratio between the first lens and the seventh lens can be effectively adjusted, which helps to increase the system symmetry and reduce the spot size in the central field of view. Among them, the following conditions can also be satisfied: 0.01 < |f1 / f7| < 0.70. Among them, the following conditions can also be satisfied: 0.04 ≤ |f1 / f7| ≤ 0.49.

[0155] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the lens group of the image capture system (which can be half of the total diagonal length of the effective sensing area of the electronic photosensitive element) is ImgH, which can satisfy the following conditions: 2.00 < TL / ImgH < 8.00. Thereby, it helps to achieve a balance between the total optical length and the large imaging surface. Among them, the following conditions can also be satisfied: 3.00 < TL / ImgH < 6.00. Among them, the following conditions can also be satisfied: 3.50 < TL / ImgH < 5.50.

[0156] The maximum viewing angle of the lens group of the image capture system is FOV, which can satisfy the following conditions: 130.0 degrees < FOV < 180.0 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. Among them, the following conditions can also be satisfied: 140.0 degrees < FOV < 170.0 degrees.

[0157] The focal length of the first lens is f1, and the focal length of the third lens is f3, which can satisfy the following conditions: -0.65 < f1 / f3 < 0.70. Thereby, the refractive power ratio between the first lens and the third lens can be adjusted, which is beneficial to converge the large-angle light rays through the first lens and balance them with the third lens. Among them, the following conditions can also be satisfied: -0.60 < f1 / f3 < 0.40.

[0158] The focal length of the lens group of the image capture system is f, the focal length of the second lens is f2, the focal length of the third lens is f3, and the focal length of the seventh lens is f7, which can satisfy the following conditions: 0 < |f / f2| + |f / f3| + |f / f7| < 1.00. Thereby, the refractive powers of the second lens, the third lens and the seventh lens can be adjusted, which helps to balance the convergence or divergence of the large-angle incident light rays and improve the light-gathering quality of the entire field of view. Among them, the following conditions can also be satisfied: 0.10 < |f / f2| + |f / f3| + |f / f7| < 0.90.

[0159] The thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, the thickness of the sixth lens on the optical axis is CT6, and the distance between the fifth lens and the sixth lens on the optical axis is T56, which can satisfy the following condition: 0.25 < CT4 / (CT5 + T56 + CT6) < 0.70. Thereby, the ratio of the center thickness of the fourth lens to the distance from the fifth lens to the sixth lens on the optical axis can be balanced, which helps to obtain a better spatial configuration. Among them, the following condition can also be satisfied: 0.30 < CT4 / (CT5 + T56 + CT6) < 0.60.

[0160] The radius of curvature of the image-side surface of the second lens is R4, and the radius of curvature of the image-side surface of the fifth lens is R10, which can satisfy the following condition: 0.10 < (R4 + R10) / (R4 - R10) < 15.00. Thereby, the radius of curvature of the image-side surface of the second lens and the radius of curvature of the image-side surface of the fifth lens can be effectively balanced, which helps to balance the central spherical aberration with each other, and further improves the imaging quality. Among them, the following condition can also be satisfied: 0.20 < (R4 + R10) / (R4 - R10) < 10.00. Among them, the following condition can also be satisfied: 0.30 < (R4 + R10) / (R4 - R10) < 5.00.

[0161] The Abbe number of the third lens is V3, which can satisfy the following condition: 5.0 < V3 < 35.0. Thereby, the chromatic aberration generated by the lens group of the image capture system can be corrected and the imaging quality can be improved. Among them, the following condition can also be satisfied: 10.0 < V3 < 30.0.

[0162] 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 fourth lens is Y4R2, which can satisfy the following condition: 1.50 < Y1R1 / Y4R2 < 3.00. Thereby, the optical effective radius heights of the first lens and the fourth lens can be adjusted, the traveling direction of light at the image-side end of the lens group of the image capture system can be balanced, and the incident angle on the imaging surface can be reduced, which helps to expand the viewing angle and increase the illuminance at the same time. Among them, the following condition can also be satisfied: 1.80 < Y1R1 / Y4R2 < 2.80. Please refer to Fig.28 , which is a schematic diagram showing the parameters Y1R1 and Y4R2 in the first embodiment of the present disclosure.

[0163] The displacement amount parallel to the optical axis from the intersection point of the object-side surface of the second lens on the optical axis to the position of the maximum effective radius of the object-side surface of the second lens is Sag2R1, and the thickness of the second lens on the optical axis is CT2, which can satisfy the following condition: 0.01 < |Sag2R1| / CT2 < 0.60. Thereby, the bending degree of the peripheral surface shape of the object side of the second lens can be balanced, which helps to increase the viewing angle and correct aberrations such as distortion. Among them, the following condition can also be satisfied: 0.10 < |Sag2R1| / CT2 < 0.50. Please refer to Fig.28 It is a schematic diagram showing the parameter Sag2R1 in the first embodiment of the present disclosure, where the displacement value is positive in the image side direction and negative in the object side direction.

[0164] 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 focal length of the seventh lens is f7, which can satisfy the following conditions: 0 < (|f / f2| + |f / f7|) / |f / f1| < 1.30. Thus, the light divergence ability of the first lens can be enhanced and balanced by the second lens and the seventh lens, which helps to broaden the shooting field of view. Among them, the following conditions can also be satisfied: 0.01 < (|f / f2| + |f / f7|) / |f / f1| < 1.10.

[0165] The distance between the fourth lens and the fifth lens on the optical axis is T45, and the thickness of the fifth lens on the optical axis is CT5, which can satisfy the following conditions: 0.07 < T45 / CT5 < 0.90. Thus, the ratio of the distance between the fourth lens and the fifth lens and the center thickness of the fifth lens can be controlled, which helps to reduce manufacturing tolerances. Among them, the following conditions can also be satisfied: 0.15 < T45 / CT5 < 0.60.

[0166] The distance from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis is TD, and the distance from the image side surface of the seventh lens to the imaging surface on the optical axis is BL, which can satisfy the following conditions: 5.00 < TD / BL < 9.00. Thus, it helps to reduce the length of the back focal length and compress the volume of the lens group of the image capture system. Among them, the following conditions can also be satisfied: 5.50 < TD / BL < 8.50.

[0167] The maximum refractive index among the second lens, the third lens, and the seventh lens is MAX_N237, which can satisfy the following conditions: 1.500 < MAX_N237 < 1.720. Thus, the optical path of the lens group of the image capture system can be adjusted to balance the convergence ability between different wavelength lights and correct chromatic aberration. Among them, the following conditions can also be satisfied: 1.600 < MAX_N237 < 1.705.

[0168] The distance between the fifth lens and the sixth lens on the optical axis is T56, which can satisfy the following conditions: 0.010 mm < T56 < 0.050 mm. Thus, the two aspherical cemented lenses can maintain a more appropriate distance, which is beneficial to avoiding the problem that the cement cannot be evenly dispersed to the periphery of the lens due to the lenses being too close. Among them, the following conditions can also be satisfied: 0.020 mm < T56 < 0.040 mm.

[0169] 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 sixth lens is R11. The focal length of the lens group of the image capture system is f, and the following conditions can be satisfied: 0.04 < |R10 - R11| × 10 / f < 8.00. Thereby, the bonding surfaces of the two aspherical lenses can have different radii of curvature, which helps to increase the design freedom. Among them, the following conditions can also be satisfied: 0.06 < |R10 - R11| × 10 / f < 7.00.

[0170] 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. The following conditions can be satisfied: 0.30 < CT4 / CT5 < 0.85. Thereby, the ratio of the central thickness of the fourth lens and the fifth lens can be balanced, which helps to reduce the manufacturing tolerance and improve the qualified rate. Among them, the following conditions can also be satisfied: 0.45 < CT4 / CT5 < 0.75.

[0171] The radius of curvature of the object-side surface of the fourth lens is R7, and the radius of curvature of the object-side surface of the sixth lens is R11. The following conditions can be satisfied: 0.35 < (R7 - R11) / (R7 + R11) < 3.00. Thereby, the radius of curvature of the object-side surface of the fourth lens and the radius of curvature of the object-side surface of the sixth lens can be effectively balanced, which helps to correct astigmatism and improve the imaging quality. Among them, the following conditions can also be satisfied: 0.50 < (R7 - R11) / (R7 + R11) < 2.00.

[0172] The distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, and the distance between the fourth lens and the fifth lens on the optical axis is T45. The following conditions can be satisfied: 0.65 < (T34 + T45) / T12 < 2.50. Thereby, the distance between the first lens and the second lens, the distance between the third lens and the fourth lens, and the distance between the fourth lens and the fifth lens can be balanced, which helps to control the volume of the lens group of the image capture system. Among them, the following conditions can also be satisfied: 0.72 < (T34 + T45) / T12 < 2.00.

[0173] Each of the technical features in the lens group of the image capture system disclosed in the present disclosure can be combined and configured to achieve the corresponding effects.

[0174] In the image capture system lens group disclosed in the present disclosure, the material of the lens can be glass or plastic. If the material of the lens is glass, the freedom of the refractive power configuration of the image capture system lens group can be increased, and the influence of the external ambient temperature change on the imaging can be reduced, and the glass lens can be made by grinding or molding. If the material of the lens is plastic, the production cost can be effectively reduced. In addition, a spherical surface (SPH) or an aspherical surface (ASP) can be set on the mirror surface, wherein the spherical lens can reduce the manufacturing difficulty, and if the aspherical surface is set on the mirror surface, more control variables can be obtained to eliminate aberrations, reduce the number of lenses, and effectively reduce the total length of the image capture system lens group disclosed in the present disclosure. Furthermore, the aspherical surface can be made by plastic injection molding or molding glass lenses.

[0175] In the image capture system lens assembly disclosed in the present disclosure, if the lens surface is an aspherical surface, it means that the entire or a part of the optically effective area of ​​the lens surface is an aspherical surface.

[0176] In the image capture system lens assembly disclosed in 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 lens's transmittance 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 600-nanometer to 800-nanometer wavelength band in the system to help reduce excess red light or infrared light; or it can filter out light in the 350-nanometer to 450-nanometer wavelength band to reduce excess blue light or ultraviolet light. Therefore, the additive can prevent light in a specific wavelength band from interfering with imaging. In addition, the additive can be evenly mixed in a plastic material 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.

[0177] In the image capture system lens set disclosed in the present disclosure, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface can be located at the near optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located at the near optical axis of the lens surface. If the refractive power or focal length of the lens does not define its regional position, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens at the near optical axis.

[0178] In the image capture system lens assembly disclosed in the present disclosure, the inflection point of the lens surface refers to the intersection point where the curvature of the lens surface changes positively and negatively. The critical point of the lens surface refers to the tangent point on the tangent line between the plane perpendicular to the optical axis and the lens surface, and the critical point is not located on the optical axis.

[0179] In the image capture system lens assembly disclosed in the present invention, the imaging surface of the image capture system lens assembly 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 corresponding electronic photosensitive element.

[0180] In the image capture system lens assembly disclosed in the present disclosure, one or more imaging correction elements (field flattening elements, etc.) can be selectively arranged between the lens closest to the imaging surface on the imaging optical path and the imaging surface 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 type (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 arrange a thin plano-concave element with a concave surface toward the object side close to the imaging surface.

[0181] In the image capture system lens assembly disclosed in the present disclosure, at least one element with a function of turning the optical path, such as a prism or a reflector, can be selectively arranged between the object and the imaging surface on the imaging optical path, 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 assembly, so that the thinness of the electronic device is not restricted by the total optical length of the image capture system lens assembly. For further explanation, please refer to Fig.29 and Fig.30 ,in Fig.29 is a schematic diagram showing a configuration relationship of an optical path turning element in an image capture system lens assembly according to the present disclosure, and Fig.30 FIG. 2 is a schematic diagram showing another configuration relationship of an optical path turning element in an image capture system lens assembly according to the present disclosure. Fig.29 and Fig.30 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 Fig.29 As shown, it is arranged between the object and the lens group LG of the image capture system lens group, or as shown in Fig.30 The figure shows the lens group LG and the imaging surface IMG of the image capture system lens group. Fig.31 , is a schematic diagram illustrating a configuration relationship of two optical path turning elements in an image capture system lens assembly according to the present disclosure, such as Fig.31As 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, a first optical path turning element LF1, a second optical axis OA2, a second optical path turning element LF2 and a third optical axis OA3, wherein the first optical path turning element LF1 is arranged between the object and the lens group LG of the image capture system lens group, the second optical path turning element LF2 is arranged between the lens group LG of the image capture system lens group and the imaging surface IMG, and the traveling direction of the light on the first optical axis OA1 can be as follows: Fig.31 The direction shown is the same as the direction of light traveling along the third optical axis OA3. The image capture system lens assembly can also selectively configure 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.

[0182] In the image capture system lens assembly disclosed in the present invention, at least one aperture stop may be provided, which may be located before the first lens, between each lens, or after the last lens. The aperture stop may be a glare stop or a field stop, etc., which may be used to reduce stray light and help improve image quality.

[0183] In the image capture system lens set disclosed in the present disclosure, the aperture configuration can be a front aperture or a center aperture. 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 can be at a longer distance from the imaging surface, making it have a telecentric effect and increasing 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.

[0184] The present disclosure may appropriately set a variable aperture element, which may be a mechanical component or a light regulating 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 regulating element may include shielding materials such as a filter element, an electrochromic material, and a liquid crystal layer. 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.

[0185] The present disclosure may appropriately place one or more optical elements to limit the form of light passing through the image capture system lens group. The optical element may be a filter, a polarizer, etc., but the present disclosure is not limited thereto. In addition, the optical element may be a single-piece element, a composite component, or presented in the form of a film, etc., but the present disclosure is not limited thereto. The optical element may be placed at the object end, the image end, or between the lenses of the image capture system lens group to control the passage of a specific form of light, thereby meeting the application requirements.

[0186] The image capture system lens assembly disclosed in 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 (reflection 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.

[0187] In the image capture system lens group disclosed in the present invention, the object side and the image side are determined according to the direction of the optical axis, and the data on the optical axis are calculated along the optical axis. If the optical axis is turned through an optical path turning element, the data on the optical axis is also calculated along the optical axis.

[0188] According to the above implementation modes, specific embodiments are proposed below and described in detail with reference to the accompanying drawings.

[0189] <First Embodiment>

[0190] Please refer to Figure 1 to Figure 2 ,in Figure 1 A schematic diagram of an imaging device according to a first embodiment of the present disclosure is shown. 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 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, 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, a filter element (Filter) E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0191] 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. Both surfaces are aspherical.

[0192] The second lens E2 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 surfaces are aspherical. Its object-side surface has an inflection point, and its object-side surface has a concave critical point at an off-axis position.

[0193] 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. Both surfaces are aspherical.

[0194] The fourth lens element E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical.

[0195] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, and its image-side surface has an inflection point.

[0196] 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 convex near the optical axis. Both surfaces are aspherical. Its object-side surface has an inflection point, and its image-side surface has an inflection point. The image-side surface of the fifth lens E5 is bonded to the object-side surface of the sixth lens E6.

[0197] The seventh lens E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its object-side surface has two inflection points, its image-side surface has two inflection points, its object-side surface has a concave critical point at an off-axis position, and its image-side surface has a convex critical point at an off-axis position.

[0198] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0199] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:

[0200]

[0201] 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;

[0202] Y: the vertical distance between the point on the aspheric curve and the optical axis;

[0203] R: radius of curvature;

[0204] k: cone coefficient; and

[0205] Ai: i-th order aspheric coefficient.

[0206] 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=2.41 millimeters (mm), Fno=2.25, HFOV=78.0 degrees (deg.).

[0207] The maximum viewing angle of the lens group of the image capture system is FOV, which satisfies the following condition: FOV = 156.0 degrees.

[0208] The focal length of the image capture system lens group is f, and the distance from the object-side surface of the first lens E1 to the imaging surface IMG on the optical axis is TL, which satisfies the following condition: f / TL=0.17.

[0209] The distance between the object-side surface of the first lens E1 and the imaging surface IMG on the optical axis is TL, and the maximum imaging height of the image capture system lens group is ImgH, which satisfies the following condition: TL / ImgH=4.33.

[0210] The distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the seventh lens E7 is TD, and the distance on the optical axis from the image-side surface of the seventh lens E7 to the imaging plane IMG is BL, which satisfies the following condition: TD / BL=7.94.

[0211] The focal length of the first lens E1 is f1, and the focal length of the third lens E3 is f3, which satisfy the following condition: f1 / f3=-0.10.

[0212] The focal length of the first lens E1 is f1, and the focal length of the seventh lens E7 is f7, which satisfy the following condition: |f1 / f7|=0.13.

[0213] The focal length of the image capture system lens group is f, 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 seventh lens E7 is f7, which satisfies the following condition: |f / f2|+|f / f3|+|f / f7|=0.19.

[0214] The focal length of the image capture system lens group is f, the focal length of the first lens E1 is f1, the focal length of the second lens E2 is f2, and the focal length of the seventh lens E7 is f7, which satisfies the following condition: (|f / f2|+|f / f7|) / |f / f1|=0.14.

[0215] The radius of curvature of the image-side surface of the second lens E2 is R4, and the radius of curvature of the image-side surface of the fifth lens E5 is R10, which satisfy the following condition: (R4+R10) / (R4-R10)=0.73.

[0216] The radius of curvature of the object-side surface of the fourth lens E4 is R7, and the radius of curvature of the image-side surface of the fourth lens E4 is R8, which satisfy the following condition: (R7-R8) / (R7+R8)=0.64.

[0217] The radius of curvature of the object-side surface of the fourth lens E4 is R7, and the radius of curvature of the image-side surface of the fifth lens E5 is R10, which satisfy the following condition: (R7-R10) / (R7+R10)=0.76.

[0218] The radius of curvature of the object-side surface of the fourth lens E4 is R7, and the radius of curvature of the object-side surface of the sixth lens E6 is R11, which satisfy the following condition: (R7-R11) / (R7+R11)=0.75.

[0219] The radius of curvature of the image-side surface of the first lens E1 is R2, and the radius of curvature of the image-side surface of the second lens E2 is R4, which satisfy the following condition: |R2 / R4|=0.18.

[0220] The radius of curvature of the image-side surface of the fifth lens E5 is R10, and the radius of curvature of the object-side surface of the sixth lens E6 is R11, which satisfy the following condition: R11 / R10=1.06.

[0221] The curvature radius of the image-side surface of the fifth lens E5 is R10, the curvature radius of the object-side surface of the sixth lens E6 is R11, and the focal length of the image capture system lens group is f, which satisfies the following condition: |R10-R11|×10 / f=0.49.

[0222] The sum of the thicknesses of all lenses in the image capture system lens group on the optical axis is ΣCT, and the sum of the spacing distances of all adjacent lenses in the image capture system lens group on the optical axis is ΣAT, which satisfies the following condition: ΣCT / ΣAT=1.92. In the present embodiment, ΣCT is the sum of the thicknesses of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E, and the seventh lens E7 on the optical axis. In the present embodiment, ΣAT is the sum of the spacing distances of any two adjacent lenses among the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E, and the seventh lens E7 on the optical axis. In the present embodiment, the spacing distance of two adjacent lenses on the optical axis refers to the distance between two adjacent mirror surfaces of the two adjacent lenses on the optical axis.

[0223] The distance between the object side surface of the first lens E1 and the image side surface of the third lens E3 on the optical axis is Dr1r6, and the distance between the object side surface of the fourth lens E4 and the image side surface of the seventh lens E7 on the optical axis is Dr7r14, which satisfies the following condition: Dr7r14 / Dr1r6=1.74.

[0224] 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 thickness of the sixth lens E6 on the optical axis is CT6, and the interval between the fifth lens E5 and the sixth lens E6 on the optical axis is T56, which satisfies the following condition: CT4 / (CT5+T56+CT6)=0.42.

[0225] The thickness of the fourth lens E4 on the optical axis is CT4, and the thickness of the fifth lens E5 on the optical axis is CT5, which satisfy the following condition: CT4 / CT5=0.64.

[0226] The distance between the first lens E1 and the second lens E2 on the optical axis is T12, the distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, and the distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, which satisfies the following condition: (T34+T45) / T12=1.06.

[0227] The distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the thickness of the fifth lens E5 on the optical axis is CT5, which satisfies the following condition: T45 / CT5=0.36.

[0228] The distance between the fifth lens E5 and the sixth lens E6 on the optical axis is T56, which satisfies the following condition: T56=0.031 mm.

[0229] The Abbe number of the second lens E2 is V2, and the refractive index of the second lens E2 is N2, which satisfies the following condition: V2 / N2=9.61.

[0230] The Abbe number of the third lens E3 is V3, which satisfies the following condition: V3=16.3.

[0231] The maximum refractive index of the second lens E2, the third lens E3 and the seventh lens E7 is MAX_N237, which satisfies the following condition: MAX_N237=1.697. In this embodiment, the refractive index of the second lens E2 and the refractive index of the third lens E3 are greater than the refractive index of the first lens E1, the refractive index of the fourth lens E4, the refractive index of the fifth lens E5, the refractive index of the sixth lens E6 and the refractive index of the seventh lens E7, so MAX_N237 is equal to the refractive index of the second lens E2 or the refractive index of the third lens E3.

[0232] The maximum effective radius of the object-side surface of the first lens E1 is Y1R1, and the maximum effective radius of the image-side surface of the fourth lens E4 is Y4R2, which satisfy the following condition: Y1R1 / Y4R2=2.56.

[0233] The displacement parallel to the optical axis from the intersection of the object side surface of the second lens E2 on the optical axis to the maximum effective radius position of the object side surface of the second lens E2 is Sag2R1, and the thickness of the second lens E2 on the optical axis is CT2, which satisfies the following condition: |Sag2R1| / CT2=0.13.

[0234] Please refer to Table 1A and Table 1B below.

[0235]

[0236]

[0237]

[0238]

[0239] Table 1A Figure 1 The first embodiment has detailed structural data, wherein the units of the radius of curvature, thickness and focal length are in millimeters (mm), and surfaces 0 to 20 represent the surfaces from the object side to the image side in sequence. Table 1B shows the aspheric surface data of the first embodiment, wherein k is the cone coefficient in the aspheric curve equation, and A4 to A16 represent the 4th to 16th 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.

[0240] <Second Embodiment>

[0241] Please refer to Figure 3 to Figure 4 ,in Figure 3A schematic diagram of an imaging device according to a second embodiment of the present disclosure is shown. 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 image capturing device 2 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, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0242] 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. Both surfaces are spherical.

[0243] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, and its image-side surface has a concave critical point at an off-axis position.

[0244] The third lens E3 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, its object-side surface has a convex critical point at an off-axis position, and its image-side surface has a concave critical point at an off-axis position.

[0245] The fourth lens element E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical.

[0246] 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. Both surfaces are aspherical.

[0247] 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 convex near the optical axis. Both surfaces are aspherical, and its image-side surface has an inflection point. The image-side surface of the fifth lens E5 is bonded to the object-side surface of the sixth lens E6.

[0248] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, its object-side surface has a concave critical point at an off-axis position, and its image-side surface has a convex critical point at an off-axis position.

[0249] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0250] Please refer to Table 2A and Table 2B below.

[0251]

[0252]

[0253]

[0254] 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 described in the following Table 2C are the same as those in the first embodiment and are not repeated here.

[0255]

[0256] <Third Embodiment>

[0257] Please refer to Figure 5 to Figure 6 ,in Figure 5 A schematic diagram of an imaging device according to a third embodiment of the present disclosure is shown. Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment. Figure 5 It can be seen that the image capturing device 3 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, 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, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0258] 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. Both surfaces are spherical.

[0259] The second lens E2 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 surfaces are aspherical, and its object-side surface has an inflection point.

[0260] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, and its object-side surface has a convex critical point at an off-axis position.

[0261] The fourth lens element E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical.

[0262] 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. Both surfaces are aspherical.

[0263] 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 convex near the optical axis. Both surfaces are aspherical, and its image-side surface has an inflection point. The image-side surface of the fifth lens E5 is bonded to the object-side surface of the sixth lens E6.

[0264] The seventh lens element E7 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 convex near the optical axis. Both surfaces are aspherical.

[0265] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0266] Please refer to Table 3A and Table 3B below.

[0267]

[0268]

[0269]

[0270] 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 described in the following Table 3C are the same as those in the first embodiment and are not repeated here.

[0271]

[0272]

[0273] <Fourth Embodiment>

[0274] Please refer to Figures 7 and 8 ,in Figure 7 A schematic diagram of an imaging device according to a fourth embodiment of the present disclosure is shown. 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 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, an aperture S1, a third lens E3, an aperture ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an aperture S2, a seventh lens E7, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0275] 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. Both surfaces are spherical.

[0276] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has two inflection points, its image-side surface has one inflection point, and its image-side surface has a concave critical point at an off-axis position.

[0277] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, and its object-side surface has a convex critical point at an off-axis position.

[0278] The fourth lens E4 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are aspherical.

[0279] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, and its image-side surface has an inflection point.

[0280] The sixth lens E6 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, its image side surface is concave near the optical axis, both surfaces are aspherical, its object side surface has one inflection point, its image side surface has two inflection points, and its image side surface has a convex critical point at the off-axis position. The image side surface of the fifth lens E5 is bonded to the object side surface of the sixth lens E6.

[0281] The seventh lens E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, its object-side surface has a concave critical point at an off-axis position, and its image-side surface has a convex critical point at an off-axis position.

[0282] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0283] Please refer to Table 4A and Table 4B below.

[0284]

[0285]

[0286]

[0287] 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 described in the following Table 4C are the same as those in the first embodiment and are not repeated here.

[0288]

[0289]

[0290] <Fifth Embodiment>

[0291] Please refer to Figures 9 and 10 ,in Fig. 9 A schematic diagram of an imaging device according to a fifth embodiment of the present disclosure is shown. Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment. Fig. 9It can be seen that the image capturing device 5 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, 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, an aperture S3, a seventh lens E7, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other lenses inserted between the lenses.

[0292] 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. Both surfaces are aspherical.

[0293] The second lens E2 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. Both surfaces are aspherical. Its object-side surface has an inflection point, and its object-side surface has a concave critical point at an off-axis position.

[0294] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, and its object-side surface has a convex critical point at an off-axis position.

[0295] The fourth lens element E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical.

[0296] The fifth lens element E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, and its object-side surface has an inflection point.

[0297] 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 convex near the optical axis. Both surfaces are aspherical, and its image-side surface has an inflection point. The image-side surface of the fifth lens E5 is bonded to the object-side surface of the sixth lens E6.

[0298] The seventh lens E7 has positive refracting power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has two inflection points, its image-side surface has two inflection points, its object-side surface has a concave critical point at an off-axis position, and its image-side surface has a concave critical point and a convex critical point at an off-axis position.

[0299] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0300] Please refer to Table 5A and Table 5B below.

[0301]

[0302]

[0303]

[0304]

[0305] 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 described in the following Table 5C are the same as those in the first embodiment and are not repeated here.

[0306]

[0307] <Sixth Embodiment>

[0308] Please refer to Figure 11 to Figure 12 ,in Fig.11 A schematic diagram of an imaging device according to a sixth embodiment of the present disclosure is shown. 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 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, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0309] 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. Both surfaces are spherical.

[0310] The second lens E2 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 surfaces are aspherical, and its object-side surface has an inflection point.

[0311] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, and its object-side surface has a convex critical point at an off-axis position.

[0312] The fourth lens element E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical.

[0313] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, and its image-side surface has an inflection point.

[0314] 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 convex near the optical axis. Both surfaces are aspherical. Its object-side surface has an inflection point, and its image-side surface has an inflection point. The image-side surface of the fifth lens E5 is bonded to the object-side surface of the sixth lens E6.

[0315] The seventh lens E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its object-side surface has an inflection point, its image-side surface has an inflection point, its object-side surface has a concave critical point at an off-axis position, and its image-side surface has a convex critical point at an off-axis position.

[0316] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0317] Please refer to Table 6A and Table 6B below.

[0318]

[0319]

[0320]

[0321]

[0322] 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 described in the following Table 6C are the same as those in the first embodiment and are not repeated here.

[0323]

[0324] <Seventh Embodiment>

[0325] Please refer to Figure 13 to Figure 14 ,in Fig.13 FIG. 1 is a schematic diagram of an imaging device 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.13 It can be seen that the image capturing device 7 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, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0326] 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. Both surfaces are spherical.

[0327] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its object-side surface has two inflection points, and its object-side surface has a convex critical point at an off-axis position.

[0328] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its image-side surface has an inflection point, and its image-side surface has a concave critical point at an off-axis position.

[0329] The fourth lens E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has two inflection points, and its object-side surface has a convex critical point and a concave critical point at an off-axis position.

[0330] The fifth lens element E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, and its object-side surface has an inflection point.

[0331] 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. Both surfaces are aspherical.

[0332] The seventh lens element E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its image-side surface has three inflection points, and its image-side surface has a convex critical point at an off-axis position.

[0333] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

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

[0335]

[0336]

[0337]

[0338]

[0339] 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 described in the following Table 7C are the same as those in the first embodiment and are not repeated here.

[0340]

[0341] <Eighth Embodiment>

[0342] Please refer to Figure 15 to Figure 16 ,in Fig.15 FIG. 1 is a schematic diagram of an imaging device 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.15It can be seen that the image capturing device 8 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, an aperture ST, a third lens E3, an aperture S1, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system lens group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interpolated lenses between the lenses.

[0343] 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. Both surfaces are aspherical.

[0344] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its image-side surface has an inflection point, and its image-side surface has a concave critical point at an off-axis position.

[0345] 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. Both surfaces are aspherical, and its object-side surface has an inflection point.

[0346] The fourth lens element E4 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are spherical.

[0347] The fifth lens element E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0348] The sixth lens E6 has negative refractive power and is made of glass, its object side surface is concave near the optical axis, its image side surface is concave near the optical axis, and both surfaces are spherical. The image side surface of the fifth lens E5 is bonded to the object side surface of the sixth lens E6.

[0349] The seventh lens E7 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, its object-side surface has one inflection point, and its image-side surface has two inflection points.

[0350] The filter element E8 is made of glass and is disposed between the seventh lens E7 and the imaging surface IMG, and does not affect the focal length of the lens group of the image capture system.

[0351] Please refer to Table 8A and Table 8B below.

[0352]

[0353]

[0354]

[0355] 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 described in the following Table 8C are the same as those in the first embodiment and are not repeated here.

[0356]

[0357]

[0358] <Ninth Embodiment>

[0359] Please refer to Fig.17 , is a three-dimensional schematic diagram of an imaging device according to the ninth embodiment of the present disclosure. In this embodiment, the imaging device 100 is a camera module. The imaging device 100 includes an imaging lens 101, a driving device 102, an electronic photosensitive element 103, and an image stabilization module 104. The imaging lens 101 includes the image capture system lens group of the first embodiment described above, a lens barrel (not separately labeled) for carrying the image capture system lens group, and a support device (Holder Member, not separately labeled). The imaging lens 101 can also be changed to configure the image capture system lens group of the other embodiments described above, and the present disclosure is not limited to this. The imaging device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, and finally forms an image on the electronic photosensitive element 103 and can be output as image data.

[0360] The driving device 102 may have an auto-focus function, and its driving method may use a driving system such as a voice coil motor (VCM), a micro electro-mechanical system (MEMS), a piezoelectric system (Piezoelectric), and a shape memory alloy. The driving device 102 allows the imaging lens 101 to obtain a better imaging position, and can provide a clear image of the subject at different object distances. In addition, the imaging device 100 is equipped with an electronic photosensitive element 103 (such as CMOS, CCD) with good sensitivity and low noise, which is arranged on the imaging surface of the image capture system lens group, which can truly present the good imaging quality of the image capture system lens group.

[0361] The image stabilization module 104 is, for example, an accelerometer, a gyroscope, or a Hall Effect Sensor. The driving device 102 can be used in conjunction with the image stabilization module 104 as an optical image stabilization (OIS) device, which can compensate for the blurry image caused by shaking at the moment of shooting by adjusting the changes in different axes of the imaging lens 101, or use the image compensation technology in the imaging software to provide an electronic image stabilization (EIS) function, thereby further improving the image quality of dynamic and low-light scene shooting.

[0362] <Tenth Embodiment>

[0363] Please refer to Fig.18 and Fig.19 ,in Fig.18 A three-dimensional schematic diagram of one side of an electronic device according to a tenth embodiment of the present disclosure is shown, and Fig.19 Draw Fig.18 A three-dimensional schematic diagram of the other side of the electronic device.

[0364] In this embodiment, the electronic device 200 is a smart phone. The electronic device 200 includes the imaging device 100, the imaging device 100a, the imaging device 100b, the imaging device 100c and the display module 201 of the ninth embodiment. Fig. 22 As shown, the imaging device 100, the imaging device 100a and the imaging device 100b are all disposed on the same side of the electronic device 200 and are all single-focus. Fig.19 As shown, the image capturing device 100c and the display module 201 are both disposed on the other side of the electronic device 200. The image capturing device 100c can be used as a front lens to provide a selfie function, but the present disclosure is not limited thereto. Moreover, the image capturing device 100a, the image capturing device 100b and the image capturing device 100c can all include the image capturing system lens group disclosed in the present disclosure and can all have a similar structural configuration as the image capturing device 100. In detail, the image capturing device 100a, the image capturing device 100b and the image capturing device 100c can each include an imaging lens, a driving device, an electronic photosensitive element and an image stabilization module. Among them, the imaging lens of the image capturing device 100a, the image capturing device 100b and the image capturing device 100c can each include, for example, an optical lens group of the image capturing system lens group disclosed in the present disclosure, a lens barrel for carrying the optical lens group and a supporting device.

[0365] The imaging device 100 is a wide-angle imaging device, the imaging device 100a is a telephoto imaging device, the imaging device 100b is an ultra-wide-angle imaging device, and the imaging device 100c is a wide-angle imaging device. The imaging devices 100, 100a, and 100b of this embodiment have different viewing angles, so that the electronic device 200 can provide different magnifications to achieve an optical zoom shooting effect. In addition, Fig.19 As shown, the opening of the image capturing device 100c can be non-circular, and the lens barrel or lens in the image capturing device 100c can be cut at the outer diameter to have a cut edge to match the non-circular opening. In this way, the single-axis length of the image capturing device 100c can be further reduced, so as to reduce the volume of the lens, increase the area ratio of the display module 201 relative to the electronic device 200, and reduce the thickness of the electronic device 200, further achieving module miniaturization. The above-mentioned electronic device 200 is taken as an example including a plurality of image capturing devices 100, 100a, 100b, and 100c, but the number and configuration of the image capturing devices are not intended to limit the present disclosure.

[0366] <Eleventh Embodiment>

[0367] Please refer to Figure 20 to Figure 22 ,in Fig. 20 A three-dimensional schematic diagram of one side of an electronic device according to an eleventh embodiment of the present disclosure is shown. Fig.21 Draw Fig. 20 A three-dimensional schematic diagram of the other side of the electronic device, and Fig. 22 Draw Fig. 20 A system block diagram of an electronic device.

[0368] In the present embodiment, the electronic device 300 is a smart phone. The electronic device 300 comprises the imaging device 100, the imaging device 100d, the imaging device 100e, the imaging device 100f, the imaging device 100g, the imaging device 100h, the flash module 301, the focus auxiliary module 302, the image signal processor 303 (Image Signal Processor), the display module 304 and the image software processor 305 of the ninth embodiment. The imaging device 100, the imaging device 100d and the imaging device 100e are all disposed on the same side of the electronic device 300. The focus auxiliary module 302 can adopt a laser ranging or a time of flight (ToF) module, but the present disclosure is not limited thereto. The image capturing device 100f, the image capturing device 100g, the image capturing device 100h and the display module 304 are all disposed on the other side of the electronic device 300, and the display module 304 can be a user interface, so that the image capturing device 100f, the image capturing device 100g and the image capturing device 100h can be used as a front lens to provide a selfie function, but the present disclosure is not limited thereto. Moreover, the image capturing device 100d, the image capturing device 100e, the image capturing device 100f, the image capturing device 100g and the image capturing device 100h can all include the image capturing system lens group of the present disclosure and can all have a similar structural configuration as the image capturing device 100. In detail, the image capturing device 100d, the image capturing device 100e, the image capturing device 100f, the image capturing device 100g and the image capturing device 100h can each include an imaging lens, a driving device, an electronic photosensitive element and an image stabilization module. The imaging lenses of the imaging devices 100d, 100e, 100f, 100g and 100h may each include an optical lens assembly, a lens barrel for carrying the optical lens assembly, and a supporting device, such as the image capture system lens assembly disclosed herein.

[0369] The imaging device 100 is a wide-angle imaging device, the imaging device 100d is an ultra-wide-angle imaging device, the imaging device 100e is a telephoto imaging device, the imaging device 100f is a wide-angle imaging device, the imaging device 100g is an ultra-wide-angle imaging device, and the imaging device 100h is a time-of-flight ranging imaging device. The imaging devices 100, 100d, and 100e of this embodiment have different viewing angles, so that the electronic device 300 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 100e is a telephoto imaging device having an optical path turning element such as a reflective element, so that the total length of the imaging device 100e is not limited by the thickness of the electronic device 300. In addition, the imaging device 100h can obtain depth information of the image. The electronic device 300 is taken as an example to include a plurality of imaging devices 100 , 100 d , 100 e , 100 f , 100 g , and 100 h , but the number and configuration of the imaging devices are not intended to limit the present disclosure.

[0370] When the user takes a picture of the object 306, the electronic device 300 uses the image capturing device 100, the image capturing device 100d or the image capturing device 100e to focus and capture the image, activates the flash module 301 for fill light, and uses the object distance information of the object 306 provided by the focus assist module 302 for rapid focusing, and the image signal processor 303 performs image optimization processing to further improve the image quality produced by the image capture system lens group. The focus assist module 302 can use an infrared or laser focus assist system to achieve rapid focusing. In addition, the electronic device 300 can also use the image capturing device 100f, the image capturing device 100g or the image capturing device 100h to take pictures. The display module 304 can use a touch screen to cooperate with the diverse functions of the image software processor 305 to perform image capture and image processing (or a physical capture button can be used for shooting). The image processed by the image software processor 305 can be displayed on the display module 304.

[0371] <Twelfth Embodiment>

[0372] Please refer to Fig.23 , is a three-dimensional schematic diagram illustrating one side of an electronic device according to the twelfth embodiment of the present disclosure.

[0373] In the present embodiment, the electronic device 400 is a smart phone. The electronic device 400 includes the imaging device 100, the imaging device 100i, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, the imaging device 100r, the flash module 401, the focus assist module, the image signal processor, the display module and the image software processor (not shown) of the ninth embodiment. The imaging device 100, the imaging device 100i, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q and the imaging device 100r are all disposed on the same side of the electronic device 400, and the display module is disposed on the other side of the electronic device 400. Furthermore, the imaging device 100i, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q and the imaging device 100r may all include the image capture system lens assembly disclosed herein and may all have a similar structural configuration to the imaging device 100, which will not be described in detail herein.

[0374] The imaging device 100 is a wide-angle imaging device, the imaging device 100i is a telephoto imaging device, the imaging device 100j is a telephoto imaging device, the imaging device 100k is a wide-angle imaging device, the imaging device 100m is an ultra-wide-angle imaging device, the imaging device 100n is an ultra-wide-angle imaging device, the imaging device 100p is a telephoto imaging device, the imaging device 100q is a telephoto imaging device, and the imaging device 100r is a time-of-flight ranging imaging device. The imaging devices 100, 100i, 100j, 100k, 100m, 100n, 100p and 100q of this embodiment have different viewing angles, so that the electronic device 400 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 100i and the imaging device 100j are telephoto imaging devices having an optical path deflection element such as a reflective element. The optical path deflection element such as a reflective element of the imaging device 100i and the imaging device 100j may have a similar configuration. Figure 29 to Figure 31 The structure of Figure 29 to Figure 31, which will not be described in detail here. In addition, the imaging device 100r can obtain the depth information of the image. The above-mentioned electronic device 400 is taken as an example including multiple imaging devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, but the number and configuration of the imaging devices are not used to limit the present disclosure. When the user shoots the subject, the electronic device 400 uses the imaging device 100, the imaging device 100i, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, or the imaging device 100r to focus and capture the image, activates the flash module 401 for fill light, and performs subsequent processing in a manner similar to the aforementioned embodiment, which will not be described in detail here.

[0375] <Thirteenth Embodiment>

[0376] Please refer to Figure 24 to Figure 26 ,in Fig.24 FIG. 1 is a three-dimensional schematic diagram of an electronic device according to a thirteenth embodiment of the present invention. Fig.25 Draw Fig.24 A schematic side view of an electronic device, and Fig.26 Draw Fig.24 A schematic top view of an electronic device.

[0377] In this embodiment, the electronic device 500 is a mobile vehicle, such as a car. The electronic device 500 includes a plurality of imaging devices 510, and these imaging devices 510, for example, respectively include the image capture system lens set disclosed herein, which can be applied to a panoramic driving assistance system, a driving recorder, and a reverse imaging device. The imaging device 510 can be a wide-angle imaging device.

[0378] like Fig.24 As shown, the imaging device 510 can be set at the front, rear, side, rear mirror and interior of the car, etc., to capture images around the car, which helps to identify the road conditions outside the car, so as to realize the automatic assisted driving function. In addition, the images can be combined into a panoramic picture through the image software processor to provide the driver with images of the blind spots, so that the driver can control the situation around the car body, which is convenient for driving and parking.

[0379] like Fig.25 As shown, the image capturing device 510 can be disposed under the left and right rearview mirrors, respectively, to capture image information within the left and right lanes. Fig.26As shown, the imaging device 510 can also be disposed, for example, below the left and right rearview mirrors and inside the front and rear windshields, so as to help the driver obtain information about the external space outside the cockpit, provide more viewing angles to reduce blind spots, and improve driving safety. The configuration of the imaging device in the figure is only an example, and the number, position, and image capture direction of the imaging device can be adjusted according to actual needs.

[0380] The imaging device disclosed herein is not limited to being used in smart phones. The imaging device can be used in mobile focus systems as required, and has the characteristics of excellent aberration correction and good imaging quality. For example, the imaging device can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile devices, digital computers, smart TVs, network monitoring equipment, driving recorders, reversing imaging devices, multi-lens devices, identification systems, somatosensory game consoles and wearable devices. The aforementioned electronic devices are only exemplary examples of the actual application of the present disclosure, and do not limit the scope of application of the imaging device disclosed herein.

[0381] Although the present disclosure is disclosed as above with the aforementioned preferred embodiments, it is not intended to limit the present disclosure. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the patent protection scope of the present disclosure shall be subject to the scope of the patent application attached to this specification.

Claims

1. An image capture system lens assembly, characterized in that: It includes seven lenses. Along the optical path from the object side to the image side, the seven lenses are, in sequence, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens. And the seven lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction; Among them, the first lens has a negative refractive power, the image-side surface of the fifth lens is convex near the optical axis, the sixth lens has a negative refractive power, the object-side surface of the sixth lens is concave near the optical axis, and at least one of the object-side surface and the image-side surface of at least one of the seven lenses has at least one inflection point; Among them, the focal length of the lens group of the image capture system is f, the distance from the object-side surface of the first lens to an imaging plane on the optical axis is TL, the distance between the object-side surface of the first lens and the image-side surface of the third lens on the optical axis is Dr1r6, the distance between the object-side surface of the fourth lens and the image-side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the image-side surface of the fourth lens is R8, the radius of curvature of the image-side surface of the fifth lens is R10, the radius of curvature of the object-side surface of the sixth lens is R11, and they satisfy the following conditions: 0.05 < f / TL < 0.35; 1.40 < Dr7r14 / Dr1r6 < 3.00; 5.00 < V2 / N2 < 16.00; 0.10 < (R7 - R8) / (R7 + R8) < 3.50; and 0.03 < R11 / R10 < 5.

00.

2. The image capture system lens assembly according to claim 1, wherein: The focal length of the lens group of the image capture system is f, and the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, and they satisfy the following conditions: 0.10 < f / TL < 0.

25.

3. The image capture system lens assembly according to claim 1, wherein: The object-side surface of the first lens is convex near the optical axis, and at least one of the object-side surface and the image-side surface of the seventh lens has at least one inflection point.

4. The image capture system lens assembly according to claim 1, wherein: The fifth lens and the sixth lens are bonded together. The image-side surface of the fifth lens is an aspherical surface, the object-side surface of the sixth lens is an aspherical surface, the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, and the maximum imaging height of the lens group of the image capture system is ImgH, and they satisfy the following conditions: 2.00 < TL / ImgH < 8.

00.

5. The image capture system lens assembly according to claim 1, wherein: The image-side surface of the seventh lens has at least one convex critical point off the axis, and the maximum viewing angle of the lens group of the image capture system is FOV, and they satisfy the following conditions: 130.0 degrees < FOV < 180.0 degrees.

6. The image capture system lens assembly according to claim 1, wherein: The focal length of the first lens is f1, and the focal length of the third lens is f3, and they satisfy the following conditions: -0.65 < f1 / f3 < 0.

70.

7. The image capture system lens assembly according to claim 1, wherein: The focal length of the lens group of the image capture system is f, the focal length of the second lens is f2, the focal length of the third lens is f3, and the focal length of the seventh lens is f7, and they satisfy the following conditions: 0 < |f / f2| + |f / f3| + |f / f7| < 1.

00.

8. The image capture system lens assembly according to claim 1, wherein: The thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, the thickness of the sixth lens on the optical axis is CT6, and the interval between the fifth lens and the sixth lens on the optical axis is T56, which satisfies the following conditions: 0.25 <CT4 / (CT5+T56+CT6)<0.70。 9. The image capture system lens assembly according to claim 1, wherein: The curvature radius of the image-side surface of the second lens is R4, and the curvature radius of the image-side surface of the fifth lens is R10, which meets the following conditions: 0.10<(R4+R10) / (R4-R10)<15.

00.

10. The image capture system lens assembly according to claim 1, wherein: The Abbe number of the third lens is V3, which satisfies the following conditions: 5.0<V3<35.0。 11. The image capture system lens assembly according to claim 1, wherein: 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 fourth lens is Y4R2, which meets the following conditions: 1.50 <Y1R1 / Y4R2<3.00。 12. The image capture system lens assembly according to claim 1, wherein: The displacement parallel to the optical axis from the intersection of the object side surface of the second lens on the optical axis to the maximum effective radius position of the object side surface of the second lens is Sag2R1, and the thickness of the second lens on the optical axis is CT2, which satisfies the following conditions: 0.01<|Sag2R1| / CT2<0.

60.

13. An imaging device, characterized in that: Include: The image capture system lens assembly according to claim 1; and An electronic photosensitive element is disposed on the imaging surface of the image capture system lens assembly.

14. An electronic device, characterized in that: Include: The imaging device according to claim 13.

15. An image capture system lens assembly, characterized in that: The invention comprises seven lenses, wherein the seven lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from the object side to the image side along the optical path, and the seven lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction; wherein the first lens has negative refractive power, the fourth lens has positive refractive power, the sixth lens has negative refractive power, the object-side surface of the sixth lens is concave near the optical axis, and at least one of the object-side surface and the image-side surface of at least one of the seven lenses has at least one inflection point; Wherein, the focal length of the image capture system lens group is f, the distance from the object side surface of the first lens to an imaging surface on the optical axis is TL, the spacing distance from the object side surface of the first lens to the image side surface of the third lens on the optical axis is Dr1r6, the spacing distance from the object side surface of the fourth lens to the image side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the curvature radius of the image side surface of the first lens is R2, the curvature radius of the image side surface of the second lens is R4, the curvature radius of the object side surface of the fourth lens is R7, and the curvature radius of the image side surface of the fifth lens is R10, which satisfies the following conditions: 0.05 <f / TL<0.30; 1.40 <Dr7r14 / Dr1r6<3.00; 5.00 <V2 / N2<16.00; 0.10<(R7-R10) / (R7+R10)<3.00; and 0<|R2 / R4|<0.

80.

16. The image capture system lens assembly according to claim 15, wherein: The object side surface of the fifth lens is convex near the optical axis, and the object side surface of the third lens has at least one inflection point.

17. The image capture system lens assembly according to claim 15, wherein: The curvature radius of the object side surface of the fourth lens is R7, and the curvature radius of the image side surface of the fifth lens is R10, which meets the following conditions: 0.45<(R7-R10) / (R7+R10)<1.

80.

18. The image capture system lens assembly according to claim 15, 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, and the focal length of the seventh lens is f7, which satisfies the following conditions: 0<(|f / f2|+|f / f7|) / |f / f1|<1.

30.

19. The image capture system lens assembly according to claim 15, wherein: The distance between the fourth lens and the fifth lens on the optical axis is T45, and the thickness of the fifth lens on the optical axis is CT5, which satisfies the following conditions: 0.07 <T45 / CT5<0.90。 20. The image capture system lens assembly according to claim 15, wherein: The distance between the object side surface of the first lens and the image side surface of the seventh lens on the optical axis is TD, and the distance between the image side surface of the seventh lens and the imaging plane on the optical axis is BL, which satisfies the following conditions: 5.00 <TD / BL<9.00。 21. The image capture system lens assembly according to claim 15, wherein: The first lens is made of glass, the object side surface of the third lens has at least one convex critical point at an off-axis position, and the maximum refractive index of the second lens, the third lens and the seventh lens is MAX_N237, which satisfies the following conditions: 1.500 <MAX_N237<1.720。 22. An image capture system lens assembly, characterized in that: The invention comprises seven lenses, wherein the seven lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from the object side to the image side along the optical path, and the seven lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction; wherein the first lens has negative refractive power, the image-side surface of the fourth lens is convex near the optical axis, the fifth lens has positive refractive power, the object-side surface of the fifth lens is convex near the optical axis, the sixth lens has negative refractive power, and at least one of the object-side surface and the image-side surface of at least one of the seven lenses has at least one inflection point; 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 seventh lens is f7, the distance from the object side surface of the first lens to an imaging surface on the optical axis is TL, the spacing distance from the object side surface of the first lens to the image side surface of the third lens on the optical axis is Dr1r6, the spacing distance from the object side surface of the fourth lens to the image side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the sum of the thicknesses of all lenses in the image capture system lens group on the optical axis is ΣCT, the sum of the spacing distances of all adjacent lenses in the image capture system lens group on the optical axis is ΣAT, which satisfies the following conditions: 0.05 <f / TL<0.28; 1.40 <Dr7r14 / Dr1r6<3.00; 5.00 <V2 / N2<16.00; 0.10 < ΣCT / ΣAT < 3.00; and 0 < |f1 / f7| < 1.

00.

23. The image capture system lens assembly according to claim 22, wherein: It further includes an aperture, where the aperture is disposed between the second lens and the fourth lens, the distance between the fifth lens and the sixth lens on the optical axis is T56, the radius of curvature of the image side surface of the fifth lens is R10, the radius of curvature of the object side surface of the sixth lens is R11, and the focal length of the lens group of the image capture system is f, which satisfies the following conditions: 0.010 mm < T56 < 0.050 mm; and 0.04 < |R10 - R11| × 10 / f < 8.

00.

24. The image capture system lens assembly according to claim 22, wherein: The object side surface of the second lens has at least one inflection point.

25. The image capture system lens assembly according to claim 22, wherein: The object side surface of the fourth lens is concave near the optical axis, the distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the lens group of the image capture system is ImgH, which satisfies the following conditions: 3.00 < TL / ImgH < 6.

00.

26. The image capture system lens assembly according to claim 22, 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: 0.30 < CT4 / CT5 < 0.

85.

27. The image capture system lens assembly according to claim 22, wherein: The radius of curvature of the object side surface of the fourth lens is R7, and the radius of curvature of the object side surface of the sixth lens is R11, which satisfies the following conditions: 0.35 < (R7 - R11) / (R7 + R11) < 3.

00.

28. The image capture system lens assembly according to claim 22, wherein: The distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, and the distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following conditions: 0.65 < (T34 + T45) / T12 < 2.

50.

29. The image capture system lens assembly according to claim 22, wherein: 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 seventh lens is f7, the distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, the distance between the object side surface of the first lens and the image side surface of the third lens on the optical axis is Dr1r6, the distance between the object side surface of the fourth lens and the image side surface of the seventh lens on the optical axis is Dr7r14, the Abbe number of the second lens is V2, the refractive index of the second lens is N2, the radius of curvature of the image side surface of the first lens is R2, the radius of curvature of the image side surface of the second lens is R4, the radius of curvature of the object side surface of the fourth lens is R7, the radius of curvature of the image side surface of the fourth lens is R8, the radius of curvature of the image side surface of the fifth lens is R10, the radius of curvature of the object side surface of the sixth lens is R11, the total thickness of all lenses of the lens group of the image capture system on the optical axis is ΣCT, and the total distance between all adjacent lenses of the lens group of the image capture system on the optical axis is ΣAT, which satisfies the following conditions: 0.14 ≤ f / TL ≤ 0.19; 1.50 ≤ Dr7r14 / Dr1r6 ≤ 2.01; 9.61 ≤ V2 / N2 ≤ 15.92; 0.59≤(R7-R8) / (R7+R8)≤1.53; 0.89≤R11 / R10≤1.75; 0.74≤(R7-R10) / (R7+R10)≤1.16; 0.03≤|R2 / R4|≤0.27; 1.62≤ΣCT / ΣAT≤2.75; and 0.04≤|f1 / f7|≤0.49.

Images