Optical lens group, image capturing device and electronic device

Abstract

The invention provides an optical lens group, an image capturing device and an electronic device. The optical lens group includes five lens elements including a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element from an object side to an image side. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. When specific conditions are satisfied, miniaturization of the optical lens group can be maintained, and sensitivity of the optical lens group can be reduced.

Description

Technical Field

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

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

[0003] The optical lens assembly, imaging device and electronic device provided by the present disclosure help to miniaturize the optical lens assembly, reduce its sensitivity and maintain high imaging quality through the configuration of the lens surface shape and lens spacing in the optical lens assembly.

[0004] According to the present disclosure, an optical lens group is provided, which includes five lenses. The five lenses are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. Preferably, the fourth lens has a positive refractive power, and its object-side surface is convex near the optical axis. Preferably, the fifth lens has a negative refractive power, its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, 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 largest of T12, T23, T34, and T45 is ATmax, the smallest of T12, T23, T34, and T45 is ATmin, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the object-side surface of the fifth lens is R9, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the thickness of the fourth lens on the optical axis is CT4, the combined focal length of the fourth lens and the fifth lens is f45, the sum of the thicknesses of each lens in the optical lens group on the optical axis is ΣCT, and the sum of the distances between each two adjacent lenses in the optical lens group on the optical axis is ΣAT. Preferably, the following conditions are satisfied: 2.0 < ATmax / ATmin < 7.5; -1.50 < R7 / f45 < 0.00; 9.60 < TL / CT4 < 18.00; 0.60 < ΣCT / ΣAT < 1.30; and 0.08 < |R9 / R1| < 45.00.

[0005] According to the present disclosure, an imaging device is provided, which includes the aforementioned optical lens group and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical lens group.

[0006] According to the present disclosure, an electronic device is provided, which includes the aforementioned imaging device.

[0007] According to the present disclosure, an optical lens group is provided, which includes five lenses. The five lenses are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. Preferably, the image-side surface of the first lens is concave near the optical axis. Preferably, the object-side surface of the fourth lens is convex near the optical axis. Preferably, the object-side surface of the fifth lens is concave near the optical axis, and the image-side surface of the fifth lens includes at least one inflection point. The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, 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 largest of T12, T23, T34, and T45 is ATmax, the smallest of T12, T23, T34, and T45 is ATmin, the radius of curvature of the object-side surface of the fourth lens is R7, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the focal length of the optical lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the combined focal length of the fourth lens and the fifth lens is f45, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, 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 largest of CT1, CT2, CT3, CT4, and CT5 is CTmax, the smallest of CT1, CT2, CT3, CT4, and CT5 is CTmin. Preferably, it satisfies the following conditions: 2.0 < ATmax / ATmin < 7.5; -1.50 < R7 / f45 < 0.00; 9.60 < TL / CT4 < 18.00; 0.03 < |f / f3| + |f / f4| < 1.60; and 1.40 < CTmax / CTmin < 2.80.

[0008] According to the present disclosure, an optical lens group is provided, which includes five lenses. The five lenses are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. Preferably, the image-side surface of the first lens near the optical axis is concave. Preferably, the object-side surface of the fourth lens near the optical axis is convex, and the object-side surface of the fourth lens includes at least one inflection point. Preferably, the fifth lens has a negative refractive power, and its object-side surface near the optical axis is concave. The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, 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 largest of T12, T23, T34, and T45 is ATmax, the smallest of T12, T23, T34, and T45 is ATmin, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the fourth lens is R7, the focal length of the optical lens group is f, the combined focal length of the first lens and the second lens is f12, the combined focal length of the fourth lens and the fifth lens is f45, the sum of the thicknesses of each lens of the optical lens group on the optical axis is ΣCT, and the sum of the distances between each two adjacent lenses of the optical lens group on the optical axis is ΣAT. Preferably, the following conditions are satisfied: 2.00 < ATmax / ATmin < 6.20; -1.25 < R7 / f45 < -0.03; 0.60 < ΣCT / ΣAT < 1.20; 0.60 < f / f12 < 1.10; and 0.30 < |R2 / R1| < 12.00.

[0009] When ATmax / ATmin satisfies the above conditions, the spacing between the lenses of the optical lens group can be adjusted, which helps to balance the spatial configuration of the lenses to reduce the sensitivity of the optical lens group.

[0010] When R7 / f45 satisfies the above conditions, the shape of the object-side surface of the fourth lens is used to balance the back focal length of the optical lens group, which helps to shorten the back focal length.

[0011] When TL / CT4 satisfies the above conditions, by adjusting the proportional relationship between the total length of the optical lens group and the central thickness of the fourth lens, the balance between the refraction angle of the optical path of the optical lens group and the total length is harmonized.

[0012] When ΣCT / ΣAT satisfies the above conditions, the distribution of the lenses in the space of the optical lens group can be adjusted, which is beneficial to controlling its total length.

[0013] When |R9 / R1| satisfies the above conditions, the optical path control ability of the lens can be improved, and the spherical aberration and field curvature of the optical lens group can be balanced to improve the image quality.

[0014] When |f / f3|+|f / f4| satisfies the above conditions, it can ensure that the third lens and the fourth lens have a certain refractive power, which is beneficial to adjust the optical path and achieve a balance between imaging quality and the volume of the optical lens group.

[0015] When CTmax / CTmin meets the above conditions, the space of the optical lens group can be effectively compressed to meet the needs of miniaturization.

[0016] When f / f12 meets the above conditions, the light convergence capability of the front lens of the optical lens group can be enhanced, which helps to shorten the total length of the optical lens group, while correcting aberrations to improve imaging quality.

[0017] When |R2 / R1| satisfies the above conditions, it helps to adjust the surface shape of the first lens to compress the volume and reduce the generation of spherical aberration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram showing an image capturing device according to a first embodiment of the present disclosure is shown;

[0019] Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment;

[0020] Figure 3 A schematic diagram showing an image capturing device according to a second embodiment of the present disclosure is shown;

[0021] Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment;

[0022] Figure 5 A schematic diagram illustrating an image capturing device according to a third embodiment of the present disclosure;

[0023] Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment;

[0024] Figure 7 A schematic diagram illustrating an image capturing device according to a fourth embodiment of the present disclosure;

[0025] Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment;

[0026] Fig. 9 A schematic diagram illustrating an imaging device according to a fifth embodiment of the present disclosure is shown;

[0027] Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment;

[0028] Fig.11 A schematic diagram illustrating an image capturing device according to a sixth embodiment of the present disclosure is shown;

[0029] Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment;

[0030] Fig.13 A schematic diagram illustrating an imaging device according to a seventh embodiment of the present disclosure is shown;

[0031] Fig.14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment;

[0032] Fig.15 A schematic diagram illustrating an image capturing device according to an eighth embodiment of the present disclosure;

[0033] Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment;

[0034] Fig.17 A schematic diagram illustrating an image capturing device according to a ninth embodiment of the present disclosure is shown;

[0035] Fig.18 From left to right are the spherical aberration, astigmatism and distortion curves of the ninth embodiment;

[0036] Fig.19 A schematic diagram illustrating an imaging device according to a tenth embodiment of the present disclosure is shown;

[0037] Fig. 20 From left to right are the spherical aberration, astigmatism and distortion curves of the tenth embodiment;

[0038] Fig.21 A schematic diagram showing the inflection points and critical points of each lens according to the first embodiment;

[0039] Fig. 22 A schematic diagram showing some parameters according to the first embodiment;

[0040] Fig.23 A three-dimensional schematic diagram of an imaging device according to an eleventh embodiment of the present disclosure is shown;

[0041] Fig.24A A schematic diagram showing one side of an electronic device according to a twelfth embodiment of the present disclosure;

[0042] Fig. 24B Draw according to Fig.24A A schematic diagram of the other side of the electronic device;

[0043] Fig.24CDraw according to Fig.24A A system diagram of an electronic device;

[0044] Fig.25 A schematic diagram showing one side of an electronic device according to a thirteenth embodiment of the present disclosure;

[0045] Fig.26 A schematic diagram showing one side of an electronic device according to a fourteenth embodiment of the present disclosure;

[0046] Fig.27A A schematic diagram showing one side of an electronic device according to a fifteenth embodiment of the present disclosure;

[0047] Fig.27B Draw according to Fig.27A A schematic diagram of the other side of the electronic device;

[0048] Fig.28 A three-dimensional schematic diagram of an electronic device according to a sixteenth embodiment of the present disclosure is shown;

[0049] Fig.29A A schematic diagram showing a configuration relationship of a light path turning element in an optical lens assembly according to the present disclosure;

[0050] Fig.29B A schematic diagram showing another configuration relationship of the light path turning element in the optical lens assembly according to the present disclosure; and

[0051] Fig.29C A schematic diagram showing a configuration relationship of two light path turning elements in an optical lens assembly according to the present disclosure is shown.

[0052]

Explanation of symbols

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

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

[0055] 101: Imaging Lens

[0056] 102: Driving device group

[0057] 103: Electronic photosensitive element

[0058] 104: Image stabilization module

[0059] 201,301,401: Flash module

[0060] 202: Focus assist module

[0061] 203: Image Signal Processor

[0062] 204,504: User Interface

[0063] 205: Image Software Processor

[0064] 206: Subject

[0065] ST: Aperture

[0066] S1, S2: aperture

[0067] E1: First lens

[0068] E2: Second lens

[0069] E3: The third lens

[0070] E4: The fourth lens

[0071] E5: The fifth lens

[0072] E6: Filter element

[0073] IMG: Imaging surface

[0074] IS: Electronic photosensitive element

[0075] IP: Inflection Point

[0076] CP: critical point

[0077] OA1: First optical axis

[0078] OA2: Second optical axis

[0079] OA3: Third optical axis

[0080] LF, LF1, LF2: Optical path turning element

[0081] LG: Lens Group

[0082] f: focal length of the optical lens group

[0083] Fno: aperture value of the optical lens group

[0084] HFOV: Half of the maximum viewing angle of the optical lens group

[0085] FOV: The maximum viewing angle of the optical lens group

[0086] TL: The distance from the object side surface of the first lens to the imaging surface on the optical axis

[0087] TD: The distance on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens

[0088] BL: The distance from the image side surface of the fifth lens to the imaging plane on the optical axis

[0089] EPD: Entrance pupil diameter of the optical lens group

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

[0091] CRA: The incident angle between the principal ray with the largest field of view and the imaging surface in the optical lens group

[0092] f1: focal length of the first lens

[0093] f2: focal length of the second lens

[0094] f3: focal length of the third lens

[0095] f4: focal length of the fourth lens

[0096] f5: focal length of the fifth lens

[0097] f12: The combined focal length of the first and second lenses

[0098] f45: The combined focal length of the fourth and fifth lenses

[0099] CT1: Thickness of the first lens on the optical axis

[0100] CT2: The thickness of the second lens on the optical axis

[0101] CT3: Thickness of the third 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] CTmax: The maximum of CT1, CT2, CT3, CT4, and CT5

[0105] CTmin: the smallest of CT1, CT2, CT3, CT4, and CT5

[0106] ΣCT: The sum of the thickness of each lens in the optical lens group on the optical axis

[0107] T12: The distance between the first lens and the second lens on the optical axis

[0108] T23: The distance between the second lens and the third lens on the optical axis

[0109] T34: The distance between the third lens and the fourth lens on the optical axis

[0110] T45: The distance between the fourth lens and the fifth lens on the optical axis

[0111] ATmax: The maximum of T12, T23, T34, T45

[0112] ATmin: The minimum of T12, T23, T34, T45

[0113] ΣAT: The sum of the distances between two adjacent lenses in an optical lens group on the optical axis

[0114] V1: Abbe number of the first lens

[0115] V2: Abbe number of the second lens

[0116] V3: Abbe number of the third lens

[0117] V4: Abbe number of the fourth lens

[0118] V5: Abbe number of the fifth lens

[0119] Vmin: The smallest of V1, V2, V3, V4, and V5

[0120] R1: The radius of curvature of the object side surface of the first lens

[0121] R2: The radius of curvature of the image-side surface of the first lens

[0122] R4: The radius of curvature of the image-side surface of the second lens

[0123] R7: The radius of curvature of the fourth lens object side surface

[0124] R9: The radius of curvature of the object side surface of the fifth lens

[0125] R10: Radius of curvature of the image-side surface of the fifth lens

[0126] ET3: The distance between the maximum effective radius of the object side surface of the third lens and the maximum effective radius of the image side surface of the third lens parallel to the optical axis

[0127] ET4: The distance between the maximum effective radius of the object side surface of the fourth lens and the maximum effective radius of the image side surface of the fourth lens parallel to the optical axis

[0128] SAG1R1: Horizontal displacement of the intersection of the first lens object side surface on the optical axis to the maximum effective radius position of the first lens object side surface on the optical axis

[0129] SAG4R1: Horizontal displacement of the intersection of the fourth lens object side surface on the optical axis to the maximum effective radius position of the fourth lens object side surface on the optical axis

[0130] SAG5R2: Horizontal displacement of the intersection of the image side surface of the fifth lens on the optical axis to the maximum effective radius position of the image side surface of the fifth lens on the optical axis

[0131] Y1R1: Maximum effective radius of the first lens object side surface

[0132] Y2R1: Maximum effective radius of the second lens object side surface

[0133] Y5R1: Maximum effective radius of the fifth lens object side surface DETAILED DESCRIPTION

[0134] The present disclosure provides an optical lens set, comprising five lenses, and the five lenses are a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side. Each lens has an object side surface facing the object side and an image side surface facing the image side.

[0135] The first lens may have positive refractive power, which helps to converge light to compress the volume. The object-side surface of the first lens may be convex near the optical axis, which can adjust the refractive power of the first lens. The image-side surface of the first lens may be concave near the optical axis, which can balance aberrations such as spherical aberration and coma generated by compressing the volume.

[0136] The fourth lens may have positive refractive power, which helps to converge light and effectively control the direction of the light path. The object side surface of the fourth lens is convex near the optical axis, which can correct astigmatism and magnification chromatic aberration and improve imaging quality.

[0137] The fifth lens may have negative refractive power, which can effectively control the back focal length of the optical lens group to avoid the total length of the optical lens group being too long. The object side surface of the fifth lens is concave near the optical axis, which helps to reduce the distortion of the optical lens group and improve the image curvature to correct the imaging quality. The image side surface of the fifth lens may be concave near the optical axis, which helps to reduce the field curvature and compress the back focal length, so that the optical lens group can reach higher standards with excellent imaging quality.

[0138] The object side surface of the fourth lens may include at least one inflection point, which helps to adjust the direction of light travel and strike a balance between compressing the volume and increasing the imaging surface. The object side surface of the fourth lens may include at least one critical point, so that the off-axis position of the object side surface of the fourth lens has sufficient variation, which helps to correct the field curvature.

[0139] The image side surface of the fourth lens may include at least one inflection point, which can adjust the peripheral surface shape of the fourth lens, help correct astigmatism and distortion, and improve image brightness. The image side surface of the fourth lens may include at least one critical point, which can increase the freedom of design of the shape of the fourth lens, so as to facilitate the correction of peripheral image astigmatism.

[0140] The object-side surface of the fifth lens may include at least one inflection point, which can control the change of the peripheral surface shape of the object-side surface of the fifth lens, help slow down the optical path difference of the optical lens group, and improve the image quality.

[0141] The image-side surface of the fifth lens may include at least one inflection point, which can control the incident angle of light on the imaging surface to correct and compensate for the image distortion problem. The image-side surface of the fifth lens may include at least one critical point, which can adjust the peripheral light angle, avoid poor peripheral light concentration caused by too large an incident angle, and maintain the peripheral image brightness at the same time.

[0142] The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, 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 largest of T12, T23, T34, and T45 is ATmax, and the smallest of T12, T23, T34, and T45 is ATmin, which satisfy the following condition: 2.0 < ATmax / ATmin < 7.5. Thereby, the spacing of the lenses of the optical lens group can be adjusted, which helps to balance the spatial configuration of the lenses to reduce the sensitivity of the optical lens group. Furthermore, it can satisfy the following condition: 2.00 < ATmax / ATmin < 6.20. Furthermore, it can satisfy the following condition: 2.5 < ATmax / ATmin < 6.0. Furthermore, it can satisfy the following condition: 3.34 ≤ ATmax / ATmin ≤ 4.36.

[0143] The radius of curvature of the object-side surface of the fourth lens is R7, and the combined focal length of the fourth lens and the fifth lens is f45, which satisfy the following condition: -1.50 < R7 / f45 < 0.00. Thereby, the back focal length of the optical lens group is balanced by the surface shape of the object-side surface of the fourth lens, which helps to shorten the back focal length. Furthermore, it can satisfy the following condition: -1.25 < R7 / f45 < -0.03. Furthermore, it can satisfy the following condition: -1.00 < R7 / f45 < -0.10. Furthermore, it can satisfy the following condition: -0.32 ≤ R7 / f45 ≤ -0.15.

[0144] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the thickness of the fourth lens on the optical axis is CT4, which satisfy the following condition: 9.60 < TL / CT4 < 18.00. Thereby, by adjusting the proportional relationship between the total length of the optical lens group and the central thickness of the fourth lens, the balance between the refraction angle of the optical path of the optical lens group and the total length is harmonized. Furthermore, it can satisfy the following condition: 10.00 < TL / CT4 < 15.50. Furthermore, it can satisfy the following condition: 10.79 ≤ TL / CT4 ≤ 13.57.

[0145] The sum of the thicknesses of the lenses on the optical axis in the optical lens group is ΣCT, and the sum of the distances between two adjacent lenses on the optical axis in the optical lens group is ΣAT, which satisfy the following condition: 0.60 < ΣCT / ΣAT < 1.30. Thereby, the distribution of the lenses in the space of the optical lens group can be adjusted, which is beneficial to controlling its total length. Furthermore, it can satisfy the following condition: 0.60 < ΣCT / ΣAT < 1.20. Furthermore, it can satisfy the following condition: 0.70 < ΣCT / ΣAT < 1.10. Furthermore, it can satisfy the following condition: 0.82 ≤ ΣCT / ΣAT ≤ 1.20.

[0146] The radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the object-side surface of the fifth lens is R9, which satisfy the following condition: 0.08 < |R9 / R1| < 45.00. Thereby, the optical path control ability of the lens can be improved, and the spherical aberration and coma of the optical lens group can be balanced to improve the image quality. Furthermore, it can satisfy the following condition: 0.10 < |R9 / R1| < 25.00. Furthermore, it can satisfy the following condition: 1.00 < |R9 / R1| < 15.00. Furthermore, it can satisfy the following condition: 1.49 ≤ |R9 / R1| ≤ 11.73.

[0147] The focal length of the optical lens group is f, the focal length of the third lens is f3, and the focal length of the fourth lens is f4, which satisfy the following condition: 0.03 < |f / f3| + |f / f4| < 1.60. Thereby, it can be ensured that the third lens and the fourth lens have a certain refractive power, which is beneficial to adjusting the optical path and achieving a balance between the imaging quality and the volume of the optical lens group. Furthermore, it can satisfy the following condition: 0.45 < |f / f3| + |f / f4| < 1.40. Furthermore, it can satisfy the following condition: 0.57 ≤ |f / f3| + |f / f4| ≤ 1.28.

[0148] The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, 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 largest of CT1, CT2, CT3, CT4, CT5 is CTmax, and the smallest of CT1, CT2, CT3, CT4, CT5 is CTmin, which satisfy the following condition: 1.40 < CTmax / CTmin < 2.80. Thereby, the space of the optical lens group can be effectively compressed to meet the requirement of miniaturization. Furthermore, it can satisfy the following condition: 1.45 < CTmax / CTmin < 2.65. Furthermore, it can satisfy the following condition: 1.44 ≤ CTmax / CTmin ≤ 2.54.

[0149] The focal length of the optical lens group is f, and the combined focal length of the first lens and the second lens is f12, which satisfies the following condition: 0.60 < f / f12 < 1.10. Thereby, the light converging ability of the front lens of the optical lens group can be strengthened, which helps to shorten the total length of the optical lens group. At the same time, the aberration is corrected to improve the imaging quality. Furthermore, it can satisfy the following condition: 0.70 < f / f12 < 1.05. Furthermore, it can satisfy the following condition: 0.77 ≤ f / f12 ≤ 1.00.

[0150] The radius of curvature of the object side surface of the first lens is R1, and the radius of curvature of the image side surface of the first lens is R2, which satisfies the following condition: 0.30 < |R2 / R1| < 12.00. Thereby, it helps to adjust the surface shape of the first lens to compress the volume and reduce the generation of spherical aberration at the same time. Furthermore, it can satisfy the following condition: 0.60 < |R2 / R1| < 10.00. Furthermore, it can satisfy the following condition: 2.01 ≤ |R2 / R1| ≤ 2.54.

[0151] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum image height of the optical lens group is ImgH, which satisfies the following condition: 0.90 < TL / ImgH < 1.28. Thereby, it helps to balance between compressing the total length and increasing the imaging surface. Furthermore, it can satisfy the following condition: 0.95 < TL / ImgH < 1.25.

[0152] The radius of curvature of the image side surface of the first lens is R2, and the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is TD, which satisfies the following condition: 0.2 < R2 / TD < 1.5. Thereby, the surface shape of the image side surface of the first lens is balanced by the length of the lens group, and the aberration is corrected at the same time to improve the imaging quality. Furthermore, it can satisfy the following condition: 0.5 < R2 / TD < 1.2.

[0153] The focal length of the optical lens group is f, 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 satisfies the following condition: 0.30 < |f / R2| - |f / R4| < 5.00. Thereby, the surface shapes of the first lens and the second lens can be effectively balanced to mutually balance the central spherical aberration and improve the imaging quality. Furthermore, it can satisfy the following condition: 0.50 < |f / R2| - |f / R4| < 3.70.

[0154] The focal length of the first lens is f1, and the focal length of the fifth lens is f5, which satisfies the following condition: -2.50 < f1 / f5 < -1.00. Thereby, the refractive power at the front and rear ends of the optical lens group is controlled, which helps to increase the balance of the optical lens group and reduce the eccentricity sensitivity at the same time. Furthermore, it can satisfy the following condition: -1.60 < f1 / f5 < -1.10.

[0155] In the optical lens group provided by the present disclosure, at least two of the five lenses may be made of plastic material. Thereby, in cooperation with the aspherical design, the manufacturing sensitivity can be reduced while the production cost is lowered.

[0156] In the optical lens group provided by the present disclosure, there may be an air gap on the optical axis between any two adjacent lenses among the five lenses. Thereby, it helps to reduce the design limitations and facilitates the adjustment of the optical path to achieve the target specifications.

[0157] The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5. The minimum value among V1, V2, V3, V4, and V5 is Vmin, which satisfies the following conditions: 10.0 < Vmin < 22.0. Thereby, the distribution of the lens material can be adjusted and the chromatic aberration generated by the optical lens group can be corrected, which helps to improve the imaging quality. Furthermore, it can satisfy the following conditions: 12.0 < Vmin < 20.5.

[0158] The spacing distance between the third lens and the fourth lens on the optical axis is T34, and the thickness of the second lens on the optical axis is CT2, which satisfies the following conditions: 0.8 < T34 / CT2 < 4.0. Thereby, the distance between the third lens and the fourth lens and the ratio of the central thickness of the second lens can be controlled, which helps to reduce the manufacturing tolerance. Furthermore, it can satisfy the following conditions: 1.0 < T34 / CT2 < 3.0.

[0159] The Abbe number of the first lens is V1, and the Abbe number of the second lens is V2, which satisfies the following conditions: 2.50 < V1 / V2 < 4.00. Thereby, the optical path of the optical lens group can be adjusted, the converging ability between light rays of different bands can be balanced, and the chromatic aberration can be corrected. Furthermore, it can satisfy the following conditions: 2.75 < V1 / V2 < 4.00.

[0160] The aperture value of the optical lens group is Fno, which satisfies the following conditions: 1.80 < Fno < 2.65. Thereby, the aperture size can be controlled, which helps to balance between the volume and the light incident amount. Furthermore, it can satisfy the following conditions: 2.10 < Fno < 2.55.

[0161] The incident angle of the chief ray of the maximum field of view in the optical lens group with respect to the imaging surface is CRA, which satisfies the following conditions: 0.70 < tan(CRA) < 1.15. Thereby, the incident angle on the imaging surface can be controlled, which helps to shorten the total length and increase the image size. Furthermore, it can satisfy the following conditions: 0.73 < tan(CRA) < 1.00.

[0162] The thickness of the third lens on the optical axis is CT3, and the distance parallel to the optical axis between the maximum effective radius of the object side surface and the maximum effective radius of the image side surface of the third lens is ET3, which satisfies the following condition: 0.83 < CT3 / ET3 < 2.50. Thereby, the ratio of the central thickness to the edge thickness of the third lens can be adjusted, and sufficient edge thickness can be maintained to appropriately turn the peripheral light path, which helps to compress the volume of the optical lens group. Furthermore, it can satisfy the following condition: 1.00 < CT3 / ET3 < 2.20.

[0163] The maximum effective radius of the object side surface of the second lens is Y2R1, and the maximum effective radius of the object side surface of the fifth lens is Y5R1, which satisfies the following condition: 2.70 < Y5R1 / Y2R1 < 4.70. Thereby, the optical effective diameter heights of the second lens and the fifth lens can be balanced, which helps to increase the viewing angle and compress the volume. Furthermore, it can satisfy the following condition: 3.00 < Y5R1 / Y2R1 < 4.50.

[0164] The distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is TD, and the entrance pupil diameter of the optical lens group is EPD, which satisfies the following condition: 1.70 < TD / EPD < 2.60. Thereby, the overall viewing angle and light incident amount of the optical lens group can be assisted to be balanced by the volume of the lens group. Furthermore, it can satisfy the following condition: 2.00 < TD / EPD < 2.50.

[0165] Half of the maximum viewing angle in the optical lens group is HFOV, which satisfies the following condition: 0.83 < tan(HFOV) < 1.30. Thereby, the optical lens group can have a sufficient imaging range to meet the field of view requirements of the application device and avoid aberration such as distortion caused by an excessive viewing angle. Furthermore, it can satisfy the following condition: 0.83 < tan(HFOV) < 1.20.

[0166] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the focal length of the fifth lens is f5, which satisfies the following condition: -1.80 < TL / f5 < -0.90. Thereby, the refractive power of the fifth lens can be adjusted, which helps to reduce the back focal length. Furthermore, it can satisfy the following condition: -1.75 < TL / f5 < -1.00.

[0167] The radius of curvature of the object side surface of the first lens is R1, and the radius of curvature of the image side surface of the fifth lens is R10, which satisfies the following condition: 1.00 < |R10 / R1| < 3.80. Thereby, the radius of curvature of the object side surface of the first lens and the radius of curvature of the image side surface of the fifth lens can be effectively balanced, and the light path of the optical lens group can be adjusted so that the first lens can cooperate with the fifth lens, which helps to improve the central imaging quality. Furthermore, it can satisfy the following condition: 1.10 < |R10 / R1| < 2.50.

[0168] The optical lens group provided by the present disclosure may further include a diaphragm, which is disposed on the object side of the third lens. Thereby, the imaging range and the incident angle of light on the imaging surface can be restricted, which helps to increase the relative illumination of the peripheral field of view. Furthermore, the diaphragm can be disposed on the object side of the second lens. Furthermore, the diaphragm can be disposed on the object side of the first lens.

[0169] 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 fifth lens is R10, which satisfy the following condition: 0.4 < R10 / R2 < 8.5. 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 fifth lens can be adjusted to correct the central spherical aberration and astigmatism. Furthermore, it can satisfy the following condition: 0.5 < R10 / R2 < 7.0.

[0170] At least one surface of at least three lenses among the first lens to the fifth lens can be an aspherical surface. Thereby, the design freedom can be improved, which helps to reduce the volume and compensate for the distortion and off-axis aberration of the optical lens group.

[0171] The maximum effective radius of the object-side surface of the first lens is Y1R1, and the maximum image height of the optical lens group is ImgH, which satisfy the following condition: 0.13 < Y1R1 / ImgH < 0.25. Thereby, the height of the optical effective diameter of the object-side surface of the first lens can be adjusted, which helps to increase the imaging size and reduce the outer diameter of the object-side end of the optical lens group. Furthermore, it can satisfy the following condition: 0.17 < Y1R1 / ImgH < 0.23.

[0172] The horizontal displacement amount of the intersection point of the image-side surface of the fifth lens on the optical axis to the position of the maximum effective radius of the image-side surface of the fifth lens on the optical axis is SAG5R2, and the thickness of the fifth lens on the optical axis is CT5, which satisfy the following condition: -3.50 < SAG5R2 / CT5 < -1.00. Thereby, the bending degree of the peripheral surface shape of the image-side surface of the fifth lens can be controlled to correct the distortion and field curvature and improve the image quality. Furthermore, it can satisfy the following condition: -3.00 < SAG5R2 / CT5 < -1.20.

[0173] The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, 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 largest of the T12, T23, T34, and T45 is ATmax, which satisfy the following condition: T45 = ATmax. Thereby, enough space can be provided at the image-side end of the optical lens group, the design freedom can be improved, and it is beneficial to correct the field curvature and distortion.

[0174] The distance from the object - side surface of the first lens to the imaging surface on the optical axis is TL, and the distance from the image - side surface of the fifth lens to the imaging surface on the optical axis is BL, and they satisfy the following conditions: 4.50 < TL / BL < 7.00. Thus, the back - focal length of the optical lens group can be controlled, and more diverse applications can be satisfied.

[0175] 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, and they satisfy the following conditions: 0.90 < T45 / T34 < 2.60. Thus, the relative spatial configuration of the fourth lens with the front and rear lenses can be adjusted to reduce the manufacturing sensitivity. Furthermore, they can satisfy the following conditions: 1.00 < T45 / T34 < 2.50.

[0176] The distance from the object - side surface of the first lens to the image - side surface of the fifth lens on the optical axis is TD, and the thickness of the fifth lens on the optical axis is CT5, and they satisfy the following conditions: 7.00 < TD / CT5 < 15.00. Thus, the proportional relationship between the length of the lens arrangement and the central thickness of the fifth lens can be controlled, which helps to reduce the light - condensing deviation on the imaging surface. Furthermore, they can satisfy the following conditions: 7.80 < TD / CT5 < 14.00.

[0177] The Abbe number of the second lens is V2, and the Abbe number of the third lens is V3, and they satisfy the following conditions: 0.20 < V2 / V3 < 0.48. Thus, the material configuration of the second lens and the third lens can be adjusted, which helps to reduce chromatic aberration while the light path is deflected.

[0178] The horizontal displacement of the intersection point of the object - side surface of the fourth lens on the optical axis to the position of the maximum effective radius of the object - side surface of the fourth lens on the optical axis is SAG4R1, and the distance parallel to the optical axis between the maximum effective radius of the object - side surface of the fourth lens and the maximum effective radius of the image - side surface of the fourth lens is ET4, and they satisfy the following conditions: - 1.60 < SAG4R1 / ET4 < - 0.25. Thus, the peripheral surface shape and peripheral thickness of the fourth lens can be adjusted to correct astigmatism and reduce the stray light of the optical lens group. Furthermore, they can satisfy the following conditions: - 1.50 < SAG4R1 / ET4 < - 0.35.

[0179] The horizontal displacement of the intersection point of the object - side surface of the first lens on the optical axis to the position of the maximum effective radius of the object - side surface of the first lens on the optical axis is SAG1R1, and the curvature radius of the object - side surface of the first lens is R1, and they satisfy the following conditions: 1.50 < 10×SAG1R1 / R1 < 2.70. Thus, the overall surface shape of the object - side surface of the first lens can be controlled, which is beneficial to reducing aberration and at the same time reducing the volume of the optical lens group to meet the miniaturization requirements. Furthermore, they can satisfy the following conditions: 1.60 < 10×SAG1R1 / R1 < 2.60.

[0180] The various technical features of the optical lens assembly disclosed above can be configured in combination to achieve corresponding effects.

[0181] The optical lens set provided by the present disclosure can be made of glass or plastic. If the lens is made of glass, the freedom of the configuration of the refractive power of the optical lens set can be increased, and the glass lens can be made using grinding or molding techniques. If the lens is made of plastic, the production cost can be effectively reduced. In addition, a spherical surface or an aspherical surface (ASP) can be set on the mirror surface, wherein the spherical lens can reduce the difficulty of manufacturing, and if the aspherical surface is set on the mirror surface, more control variables can be obtained to reduce aberrations, reduce the number of lenses, and effectively reduce the total length of the optical lens set of the present disclosure, and the aspherical surface can be made by plastic injection molding or molded glass lenses.

[0182] In the optical lens assembly provided by the present disclosure, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects to change the transmittance of the lens for light in a specific wavelength band, thereby reducing stray light and color deviation. For example: the additive can have the function of filtering out light in the 600nm to 800nm ​​wavelength band in the system to reduce excess red light or infrared light; or it can filter out light in the 350nm to 450nm wavelength band to reduce blue light or ultraviolet light in the system. Therefore, the additive can prevent light in a specific wavelength band from interfering with imaging. In addition, the additive can be evenly mixed in the plastic and made into a lens using injection molding technology. In addition, the additive can also be configured as a coating on the surface of the lens to provide the above-mentioned effects.

[0183] In the optical lens assembly provided by the present disclosure, if the lens surface is an aspherical surface, it means that the entire optically effective area of ​​the lens surface or a portion thereof is an aspherical surface.

[0184] In the optical lens set provided by the present disclosure, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface can be convex at the near optical axis; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface can be concave at the near optical axis. In the optical lens set provided by the present disclosure, if the lens has positive refractive power or negative refractive power, or the focal length of the lens, it can refer to the refractive power or focal length of the lens at the near optical axis.

[0185] In the optical lens assembly provided by the present disclosure, the critical point is the point of tangency on the lens surface that is tangent to a tangent plane perpendicular to the optical axis, except for the intersection with the optical axis; the inflection point is the intersection point where the curvature of the lens surface changes positively and negatively.

[0186] The imaging surface of the optical lens group provided by the present disclosure can be a plane or a curved surface with any curvature, especially a curved surface with a concave surface facing the object side, depending on the different electronic photosensitive elements it corresponds to. In addition, one or more imaging correction elements (flat field elements, etc.) can be selectively arranged between the lens closest to the imaging surface on the imaging light path and the imaging surface in the optical lens group of the present disclosure to achieve the effect of correcting the image (image bending, etc.). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, surface shape (convex or concave, spherical or aspherical, diffractive surface and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally speaking, the preferred imaging correction element configuration is to place a thin plano-concave element with a concave surface facing the object side close to the imaging surface.

[0187] In the optical lens assembly provided by the present disclosure, at least one element having the function of turning the optical path, such as a prism or a reflector, can be selectively arranged on the optical path between the object and the imaging surface, wherein the prism surface or the reflector surface can be a plane, a spherical surface, an aspherical surface or a free-form surface, etc., to provide a more flexible spatial configuration of the optical lens assembly, so that the electronic device is not restricted by the total optical length of the optical lens assembly. For further explanation, please refer to Fig.29A as well as Fig.29B ,in Fig.29A A schematic diagram showing a configuration relationship of a light path turning element LF in an optical lens assembly according to the present disclosure is shown. Fig.29B FIG. 2 is a schematic diagram showing another configuration relationship of the light path turning element LF in the optical lens assembly according to the present disclosure. Fig.29A as well as Fig.29B As shown, the optical lens group can be arranged along the optical path from the object (not shown) to the imaging surface IMG, and has a first optical axis OA1, an optical path turning element LF and a second optical axis OA2 in sequence, wherein the optical path turning element LF can be as shown in FIG. Fig.29A As shown, it is arranged between the object and the lens group LG of the optical lens group, or as shown Fig.29B The lens group LG of the optical lens group and the imaging surface IMG are shown. Fig.29C , which shows a schematic diagram of a configuration relationship of two light path turning elements LF1 and LF2 in an optical lens assembly according to the present disclosure. Fig.29CAs shown, the optical lens group can also be arranged along the optical path from the object (not shown) to the imaging surface IMG, and sequentially has a first optical axis OA1, an optical path turning element LF1, a second optical axis OA2, an optical path turning element LF2 and a third optical axis OA3, wherein the optical path turning element LF1 is arranged between the object and the lens group LG of the optical lens group, and the optical path turning element LF2 is arranged between the lens group LG of the optical lens group and the imaging surface IMG. The optical lens group can also selectively be equipped with more than three optical path turning elements, and the present disclosure is not limited to the type, quantity and position of the optical path turning elements disclosed in the drawings.

[0188] In addition, in the optical lens assembly provided by the present disclosure, at least one aperture stop, such as an aperture stop, a glare stop, or a field stop, can be provided as required to help reduce stray light and improve image quality.

[0189] In the optical lens set provided by the present disclosure, the aperture configuration can be a front aperture or a center aperture, wherein the front aperture means that the aperture is set between the object and the first lens, and the center aperture means that the aperture is set between the first lens and the imaging surface. If the aperture is a front aperture, the exit pupil of the optical lens set can be at a longer distance from the imaging surface, so that it has a telecentric effect and can increase the efficiency of the CCD or CMOS of the electronic photosensitive element in receiving the image; if it is a center aperture, it is helpful to expand the field of view of the optical lens set, so that it has the advantages of a wide-angle lens.

[0190] The present disclosure may appropriately set a variable aperture element, which may be a mechanical component or a light control element, which can control the size and shape of the aperture by electricity or electrical signals. The mechanical component may include movable parts such as a blade set and a shielding plate; the light control element may include a filter element, an electrochromic material, a liquid crystal layer and other shielding materials. The variable aperture element can enhance the image adjustment capability by controlling the amount of light entering the image or the exposure time. In addition, the variable aperture element may also be the aperture of the present disclosure, which can adjust the image quality, such as the depth of field or the exposure speed, by changing the aperture value.

[0191] The present disclosure may appropriately set one or more optical elements to limit the form of light passing through the lens group of the imaging system. The optical element may be a filter, a polarizer, etc., but is not limited to the above elements, and the optical element may be a single-piece element, a composite component, or presented in the form of a film, etc., but is not limited to the above methods. The optical element may be placed at the object end, the image end, or between the lenses of the lens group of the imaging system to control the passage of a specific form of light, thereby meeting the application requirements.

[0192] The optical lens assembly of the present disclosure may include at least one optical lens, optical element or carrier, at least one surface of which has a low-reflection layer, and the low-reflection layer can effectively reduce the stray light generated by the reflection of light at the interface. The low-reflection layer can be arranged on the non-effective area of ​​the object side surface or the image side surface of the optical lens, or the connecting surface between the object side surface and the image side surface; the optical element can be a shading element, an annular spacer element, a lens barrel element, a flat glass (Coverglass), a blue glass (Blue glass), a filter element (Filter, Color filter), an optical path turning element, a prism or a mirror, etc.; the carrier can be a lens assembly lens mount, a micro lens (Micro lens) arranged on a photosensitive element, the periphery of a photosensitive element substrate, or a glass sheet used to protect a photosensitive element, etc.

[0193] The optical lens assembly provided by the present disclosure can also be widely used in three-dimensional (3D) image capture, digital cameras, mobile products, digital tablets, smart TVs, network monitoring equipment, somatosensory game consoles, driving recorders, reversing imaging devices, wearable products, drones and other electronic devices.

[0194] The present disclosure provides an imaging device, comprising an optical lens assembly and an electronic photosensitive element as described above, wherein the electronic photosensitive element is disposed on the imaging surface of the optical lens assembly. The configuration of the lens surface shape and the lens spacing in the optical lens assembly helps to miniaturize the optical lens assembly, reduce its sensitivity, and maintain high imaging quality. Preferably, the imaging device may further include a lens barrel, a supporting device, or a combination thereof.

[0195] The present disclosure provides an electronic device, comprising the aforementioned imaging device, thereby improving the imaging quality. Preferably, the aforementioned electronic device may further comprise a control unit, a display unit, a storage unit, a temporary storage unit or a combination thereof.

[0196] According to the above implementation modes, specific embodiments are proposed below and described in detail with reference to the accompanying drawings.

[0197] <First Embodiment>

[0198] Please refer to Figure 1 as well as Figure 2 ,in Figure 1 FIG. 1 is a schematic diagram showing an image capturing device 1 according to a first embodiment of the present disclosure. Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment. Figure 1It can be seen that the image capturing device 1 of the first embodiment includes an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group includes an aperture ST, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group includes five lenses (E1, E2, E3, E4, E5), and there is an air gap between any two adjacent lenses of the five lenses on the optical axis, and there is no other interpolated lens between the five lenses.

[0199] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface near the optical axis is convex, and its image-side surface near the optical axis is concave, and both are aspherical. Fig.21 , which is a schematic diagram of the inflection point IP and critical point CP of each lens according to the first embodiment. The image side surface of the first lens includes an inflection point IP (marked at Fig.21 ).

[0200] The second lens E2 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 are aspherical. In addition, the image-side surface of the second lens includes an inflection point IP (marked at Fig.21 ) and a critical point CP (marked at Fig.21 ).

[0201] The third lens E3 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the third lens includes three inflection points IP (marked at Fig.21 ) and a critical point CP (marked at Fig.21 ), the image side surface of the third lens includes three inflection points IP (marked at Fig.21 ) and a critical point CP (marked at Fig.21 ).

[0202] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the fourth lens includes two inflection points IP (marked at Fig.21 ) and a critical point CP (marked at Fig.21 ), the image side surface of the fourth lens includes two inflection points IP (marked at Fig.21 ) and the second critical point CP (marked at Fig.21 ).

[0203] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the fifth lens includes two inflection points IP (marked at Fig.21 ), the image side surface of the fifth lens includes three inflection points IP (marked at Fig.21 ) and a critical point CP (marked at Fig.21 ).

[0204] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0205] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:

[0206] ;

[0207] in:

[0208] 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;

[0209] Y: the vertical distance between the point on the aspheric curve and the optical axis;

[0210] R: radius of curvature;

[0211] k: cone coefficient; and

[0212] Ai: i-th order aspheric coefficient.

[0213] In the optical lens group of the first embodiment, the focal length of the optical lens group is f, the aperture value (f-number) of the optical lens group is Fno, and half of the maximum viewing angle in the optical lens group is HFOV, whose values ​​are as follows: f=2.47mm; Fno=2.44; and HFOV=45.1 degrees.

[0214] In the optical lens assembly of the first embodiment, the maximum viewing angle of the optical lens assembly is FOV, which satisfies the following condition: FOV=90.2 degrees.

[0215] In the optical lens assembly of the first embodiment, the distance between the object side surface of the first lens and the imaging surface IMG on the optical axis is TL, and the maximum image height of the optical lens assembly is ImgH, which satisfies the following condition: TL / ImgH=1.09.

[0216] In the optical lens assembly of the first embodiment, half of the maximum viewing angle in the optical lens assembly is HFOV, which satisfies the following condition: tan(HFOV)=1.00.

[0217] In the optical lens assembly of the first embodiment, the distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens is TD, and the entrance pupil diameter of the optical lens assembly is EPD, which satisfies the following condition: TD / EPD=2.27.

[0218] In the optical lens assembly of the first embodiment, the distance between the object-side surface of the first lens and the imaging surface IMG on the optical axis is TL, the distance between the image-side surface of the fifth lens and the imaging surface IMG on the optical axis is BL, the focal length of the fifth lens E5 is f5, and the thickness of the fourth lens E4 on the optical axis is CT4, which satisfies the following conditions: TL / BL=6.21; TL / f5=-1.74; and TL / CT4=10.79.

[0219] In the optical lens assembly of the first embodiment, the focal length of the first lens E1 is f1, and the focal length of the fifth lens E5 is f5, which satisfy the following condition: f1 / f5=-1.58.

[0220] In the optical lens assembly of the first embodiment, the focal length of the optical lens assembly is f, and the combined focal length of the first lens E1 and the second lens E2 is f12, which satisfies the following condition: f / f12=0.85.

[0221] In the optical lens group of the first embodiment, the focal length of the optical lens group is f, the focal length of the third lens E3 is f3, and the focal length of the fourth lens E4 is f4, which satisfies the following condition: |f / f3|+|f / f4|=1.25.

[0222] In the optical lens group of the first embodiment, the focal length of the optical lens group is f, the curvature radius of the image side surface of the first lens is R2, and the curvature radius of the image side surface of the second lens is R4, which satisfies the following condition: |f / R2|-|f / R4|=0.75.

[0223] In the optical lens assembly of the first embodiment, the curvature radius of the image-side surface of the first lens is R2, and the distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis is TD, which satisfies the following condition: R2 / TD=0.98.

[0224] In the optical lens set of the first embodiment, the radius of curvature of the object-side surface of the fourth lens is R7, and the combined focal length of the fourth lens E4 and the fifth lens E5 is f45, which satisfies the following condition: R7 / f45=-0.15.

[0225] In the optical lens group of the first embodiment, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the fifth lens is R9, and the radius of curvature of the image-side surface of the fifth lens is R10, which satisfies the following conditions: |R2 / R1|=2.54; |R9 / R1|=1.49; |R10 / R1|=2.78; and R10 / R2=1.09.

[0226] In the optical lens set of the first embodiment, the interval between the first lens E1 and the second lens E2 on the optical axis is T12, the interval between the second lens E2 and the third lens E3 on the optical axis is T23, the interval between the third lens E3 and the fourth lens E4 on the optical axis is T34, and the interval between the fourth lens E4 and the fifth lens E5 on the optical axis is T45. The maximum value among T12, T23, T34 and T45 is ATmax, and the minimum value among T12, T23, T34 and T45 is ATmin, which satisfies the following condition: ATmax / ATmin=4.01; wherein, in the first embodiment, ATmax=T45.

[0227] In the optical lens set of the first embodiment, the thickness of the first lens E1 on the optical axis is CT1, the thickness of the second lens E2 on the optical axis is CT2, the thickness of the third lens E3 on the optical axis is CT3, 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. The maximum value among CT1, CT2, CT3, CT4, and CT5 is CTmax, and the minimum value among CT1, CT2, CT3, CT4, and CT5 is CTmin, which satisfies the following condition: CTmax / CTmin=1.85.

[0228] In the optical lens set of the first embodiment, the thickness of the first lens E1 on the optical axis is CT1, the thickness of the second lens E2 on the optical axis is CT2, the thickness of the third lens E3 on the optical axis is CT3, the thickness of the fourth lens E4 on the optical axis is CT4, the thickness of the fifth lens E5 on the optical axis is CT5, the sum of the thicknesses of the lenses in the optical lens set on the optical axis is ΣCT, the interval between the first lens E1 and the second lens E2 on the optical axis is T12, the interval between the second lens E2 and the third lens E3 on the optical axis is T13, and the thickness of the third lens E3 on the optical axis is CT4. The spacing distance between the third lens E3 and the fourth lens E4 on the optical axis is T23, the spacing distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, the spacing distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the sum of the spacing distances between each two adjacent lenses in the optical lens group on the optical axis is ΣAT, which satisfies the following condition: ΣCT / ΣAT=1.10; wherein, in the first embodiment, ΣCT=CT1+CT2+CT3+CT4+CT5, ΣAT=T12+T23+T34+T45.

[0229] In the optical lens assembly of the first embodiment, the distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens is TD, and the thickness on the optical axis of the fifth lens E5 is CT5, which satisfies the following condition: TD / CT5=9.16.

[0230] In the optical lens assembly of the first embodiment, the distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, and the thickness of the second lens E2 on the optical axis is CT2, which satisfies the following condition: T34 / CT2=1.32.

[0231] In the optical lens assembly of the first embodiment, 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: T45 / T34=2.40.

[0232] Please refer to Fig. 22 , is a schematic diagram illustrating some parameters according to the first embodiment. Fig. 22 It can be seen that in the optical lens set of the first embodiment, the distance between the maximum effective radius of the object-side surface of the third lens and the maximum effective radius of the image-side surface of the third lens parallel to the optical axis is ET3, and the thickness of the third lens E3 on the optical axis is CT3, which satisfies the following condition: CT3 / ET3=1.16.

[0233] In the optical lens assembly of the first embodiment, the incident angle between the principal ray with the largest field of view in the optical lens assembly and the imaging surface IMG is CRA (indicated by Fig. 22 ), which satisfies the following condition: tan(CRA)=0.87.

[0234] In the optical lens group of the first embodiment, the Abbe number of the first lens E1 is V1, the Abbe number of the second lens E2 is V2, the Abbe number of the third lens E3 is V3, the Abbe number of the fourth lens E4 is V4, and the Abbe number of the fifth lens E5 is V5. The smallest of V1, V2, V3, V4, and V5 is Vmin, which satisfies the following conditions: Vmin=18.4; V1 / V2=3.05; and V2 / V3=0.33.

[0235] In the optical lens set of the first embodiment, the horizontal displacement from the intersection of the image-side surface of the fifth lens on the optical axis to the maximum effective radius position of the image-side surface of the fifth lens on the optical axis is SAG5R2 (indicated by Fig. 22 ), the thickness of the fifth lens E5 on the optical axis is CT5, which satisfies the following condition: SAG5R2 / CT5=-2.15; wherein, SAG5R2 is negative toward the object side, and SAG5R2 is positive toward the image side.

[0236] In the optical lens assembly of the first embodiment, the horizontal displacement from the intersection of the first lens object side surface on the optical axis to the maximum effective radius position of the first lens object side surface on the optical axis is SAG1R1 (indicated by Fig. 22 ), the radius of curvature of the object-side surface of the first lens is R1, which satisfies the following condition: 10×SAG1R1 / R1=1.80; wherein, SAG1R1 is negative when facing the object side, and is positive when facing the image side.

[0237] In the optical lens assembly of the first embodiment, the horizontal displacement from the intersection of the fourth lens object side surface on the optical axis to the maximum effective radius position of the fourth lens object side surface on the optical axis is SAG4R1 (indicated by Fig. 22 ), the distance between the maximum effective radius of the object side surface of the fourth lens and the maximum effective radius of the image side surface of the fourth lens parallel to the optical axis is ET4 (indicated on Fig. 22 ), which satisfies the following condition: SAG4R1 / ET4=-0.45; wherein, SAG4R1 is negative when it is toward the object side, and is positive when it is toward the image side.

[0238] In the optical lens assembly of the first embodiment, the maximum effective radius of the object side surface of the second lens is Y2R1 (indicated at Fig. 22 ), the maximum effective radius of the fifth lens object side surface is Y5R1 (marked on Fig. 22 ), which satisfies the following condition: Y5R1 / Y2R1=3.48.

[0239] In the optical lens assembly of the first embodiment, the maximum effective radius of the object side surface of the first lens is Y1R1 (indicated at Fig. 22 ), the maximum image height of the optical lens group is ImgH, which satisfies the following condition: Y1R1 / ImgH=0.20.

[0240] Please refer to the following Table 1A and Table 1B.

[0241]

[0242]

[0243]

[0244] Table 1A Figure 1The first embodiment provides detailed structural data, where the units of the radius of curvature, thickness and focal length are in mm, and surfaces 0-15 represent the surfaces from the object side to the image side in sequence, and the refractive index is the refractive index measured at the reference wavelength. Table 1B is the aspheric surface data of the first embodiment, where k represents the cone coefficient in the aspheric curve equation, and A4-A30 represents the 4th-30th 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.

[0245] <Second Embodiment>

[0246] Please refer to Figure 3 as well as Figure 4 ,in Figure 3 FIG. 1 is a schematic diagram showing an imaging device 2 according to a second embodiment of the present disclosure. Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Figure 3 It can be seen that the imaging device 2 of the second embodiment includes an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group includes an aperture ST, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group includes five lenses (E1, E2, E3, E4, E5), and there is an air gap between any two adjacent lenses of the five lenses on the optical axis, and there is no other interpolated lens between the five lenses.

[0247] The first lens E1 has positive refractive power and is made of glass, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the first lens includes an inflection point.

[0248] 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, and both are aspherical. In addition, the object side surface of the second lens includes two inflection points and a critical point.

[0249] The third lens E3 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, and both are aspherical. In addition, the object side surface of the third lens includes an inflection point, and the image side surface of the third lens includes two inflection points.

[0250] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes three inflection points and one critical point, and the image side surface of the fourth lens includes five inflection points and three critical points.

[0251] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes three inflection points, and the image side surface of the fifth lens includes four inflection points and a critical point.

[0252] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0253] Please refer to Table 2A and Table 2B below.

[0254]

[0255]

[0256]

[0257] In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0258] The following data in Table 2C can be derived by combining Table 2A and Table 2B:

[0259]

[0260] <Third Embodiment>

[0261] Please refer to Figure 5 as well as Figure 6 ,in Figure 5 FIG. 1 is a schematic diagram showing an imaging device 3 according to a third embodiment of the present disclosure. Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment. Figure 5It can be seen that the imaging device 3 of the third embodiment includes an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group includes an aperture ST, a first lens E1, a stop S1, a second lens E2, a stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group includes five lenses (E1, E2, E3, E4, E5), and there is an air gap between any two adjacent lenses of the five lenses on the optical axis, and there is no other interpolated lens between the five lenses.

[0262] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0263] 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, and both are aspherical. In addition, the object side surface of the second lens includes an inflection point and a critical point, and the image side surface of the second lens includes two inflection points.

[0264] 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 convex near the optical axis, and both are aspherical. In addition, the object side surface of the third lens includes three inflection points and a critical point, and the image side surface of the third lens includes two inflection points.

[0265] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes four inflection points and a critical point, and the image side surface of the fourth lens includes an inflection point and a critical point.

[0266] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes two inflection points and two critical points, and the image side surface of the fifth lens includes three inflection points and one critical point.

[0267] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0268] Please refer to Table 3A and Table 3B below.

[0269]

[0270]

[0271]

[0272]

[0273] In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0274] The following data in Table 3C can be derived by combining Table 3A and Table 3B:

[0275]

[0276]

[0277] <Fourth Embodiment>

[0278] Please refer to Figure 7 as well as Figure 8 ,in Figure 7 FIG. 4 is a schematic diagram showing an image capturing device 4 according to a fourth embodiment of the present disclosure. Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment. Figure 7 It can be seen that the image capturing device 4 of the fourth embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0279] The first lens E1 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the first lens includes an inflection point.

[0280] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0281] The third lens E3 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, and both are aspherical. In addition, the object side surface of the third lens includes two inflection points, and the image side surface of the third lens includes two inflection points.

[0282] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes two inflection points and one critical point, and the image side surface of the fourth lens includes six inflection points and three critical points.

[0283] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes two inflection points, and the image side surface of the fifth lens includes three inflection points and a critical point.

[0284] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0285] Please refer to Table 4A and Table 4B below.

[0286]

[0287]

[0288]

[0289] In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0290] The following data in Table 4C can be derived by combining Table 4A and Table 4B:

[0291]

[0292] <Fifth Embodiment>

[0293] Please refer to Fig. 9 as well as Fig.10 ,in Fig. 9 FIG. 5 is a schematic diagram showing an imaging device 5 according to a fifth embodiment of the present disclosure. Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment. Fig. 9It can be seen that the imaging device 5 of the fifth embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a stop S1, a second lens E2, a stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0294] The first lens E1 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the first lens includes an inflection point.

[0295] The second lens E2 has negative refractive power and is made of plastic, its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the second lens includes two inflection points and two critical points.

[0296] The third lens E3 has positive refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is convex near the optical axis, and both are aspherical. In addition, the object side surface of the third lens includes two inflection points, and the image side surface of the third lens includes two inflection points.

[0297] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes two inflection points and a critical point, and the image side surface of the fourth lens includes an inflection point and a critical point.

[0298] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes two inflection points, and the image side surface of the fifth lens includes three inflection points and a critical point.

[0299] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

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

[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 of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0306] The following data in Table 5C can be derived by combining Table 5A and Table 5B:

[0307]

[0308]

[0309] <Sixth Embodiment>

[0310] Please refer to Fig.11 as well as Fig.12 ,in Fig.11 FIG. 1 is a schematic diagram showing an imaging device 6 according to a sixth embodiment of the present disclosure. Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment. Fig.11 It can be seen that the image capturing device 6 of the sixth embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a stop S1, a second lens E2, a stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0311] The first lens E1 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the first lens includes an inflection point.

[0312] 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 convex near the optical axis, and both are aspherical. In addition, the object side surface of the second lens includes an inflection point and a critical point, and the image side surface of the second lens includes an inflection point and a critical point.

[0313] The third lens E3 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, and both are aspherical. In addition, the object side surface of the third lens includes an inflection point, and the image side surface of the third lens includes two inflection points.

[0314] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes three anti-inflection points and a critical point, and the image side surface of the fourth lens includes three anti-inflection points and a critical point.

[0315] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes two inflection points, and the image side surface of the fifth lens includes three inflection points and a critical point.

[0316] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

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

[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 of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0323] The following data in Table 6C can be derived by combining Table 6A and Table 6B:

[0324]

[0325]

[0326] <Seventh Embodiment>

[0327] Please refer to Fig.13 as well as Fig.14 ,in Fig.13 FIG. 1 is a schematic diagram showing an imaging device 7 according to a seventh embodiment of the present disclosure. Fig.14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment. Fig.13It can be seen that the imaging device 7 of the seventh embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0328] The first lens E1 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the first lens includes an inflection point.

[0329] 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, and both are aspherical. In addition, the object side surface of the second lens includes an inflection point and a critical point.

[0330] The third lens E3 has positive refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is convex near the optical axis, and both are aspherical. In addition, the object side surface of the third lens includes three inflection points, and the image side surface of the third lens includes two inflection points.

[0331] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes two inflection points and one critical point, and the image side surface of the fourth lens includes five inflection points and three critical points.

[0332] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes two inflection points, and the image side surface of the fifth lens includes three inflection points and a critical point.

[0333] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

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

[0335]

[0336]

[0337]

[0338] In the seventh embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0339] The following data in Table 7C can be derived by combining Table 7A and Table 7B:

[0340]

[0341] <Eighth Embodiment>

[0342] Please refer to Fig.15 as well as Fig.16 ,in Fig.15 FIG. 8 is a schematic diagram showing an imaging device 8 according to an eighth embodiment of the present disclosure. Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment. Fig.15 It can be seen that the imaging device 8 of the eighth embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a stop S1, a second lens E2, a stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0343] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0344] 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, and both are aspherical. In addition, the object side surface of the second lens includes two inflection points and a critical point.

[0345] 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 convex near the optical axis, and both are aspherical. In addition, the object side surface of the third lens includes three inflection points and a critical point, and the image side surface of the third lens includes two inflection points.

[0346] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes three anti-inflection points and a critical point, and the image side surface of the fourth lens includes three anti-inflection points and a critical point.

[0347] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes four inflection points and two critical points, and the image side surface of the fifth lens includes three inflection points and one critical point.

[0348] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0349] Please refer to the following Table 8A and Table 8B.

[0350]

[0351]

[0352]

[0353]

[0354] In the eighth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0355] The following data in Table 8C can be derived by combining Table 8A and Table 8B:

[0356]

[0357]

[0358] <Ninth Embodiment>

[0359] Please refer to Fig.17 as well as Fig.18 ,in Fig.17 FIG. 1 is a schematic diagram showing an imaging device 9 according to a ninth embodiment of the present disclosure. Fig.18 From left to right are the spherical aberration, astigmatism and distortion curves of the ninth embodiment. Fig.17 It can be seen that the imaging device 9 of the ninth embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0360] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, and both are aspherical.

[0361] 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, and both are aspherical. In addition, the object side surface of the second lens includes two inflection points and a critical point.

[0362] The third lens E3 has positive refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is convex near the optical axis, and both are aspherical. In addition, the object side surface of the third lens includes two inflection points, and the image side surface of the third lens includes one inflection point.

[0363] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes two inflection points and a critical point, and the image side surface of the fourth lens includes four inflection points and a critical point.

[0364] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes an inflection point, and the image side surface of the fifth lens includes two inflection points and a critical point.

[0365] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0366] Please refer to the following Table 9A and Table 9B.

[0367]

[0368]

[0369]

[0370] In the ninth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0371] The following data in Table 9C can be derived by combining Table 9A and Table 9B:

[0372]

[0373] <Tenth Embodiment>

[0374] Please refer to Fig.19 as well as Fig. 20 ,in Fig.19 FIG. 1 is a schematic diagram showing an imaging device 10 according to a tenth embodiment of the present disclosure. Fig. 20 From left to right are the spherical aberration, astigmatism and distortion curves of the tenth embodiment. Fig.19 It can be seen that the image capturing device 10 of the tenth embodiment comprises an optical lens group (not separately labeled) and an electronic photosensitive element IS. The optical lens group comprises an aperture ST, a first lens E1, a stop S1, a second lens E2, a stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path, and the electronic photosensitive element IS is disposed on the imaging surface IMG of the optical lens group, wherein the optical lens group comprises five lenses (E1, E2, E3, E4, E5), any two adjacent lenses of the five lenses have an air gap on the optical axis, and there is no other interpolated lens between the five lenses.

[0375] The first lens E1 has positive refractive power and is made of plastic, its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the image side surface of the first lens includes an inflection point.

[0376] The second lens E2 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, and both are aspherical. In addition, the image side surface of the second lens includes an inflection point and a critical point.

[0377] The third lens E3 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, and both are aspherical. In addition, the object side surface of the third lens includes an inflection point, and the image side surface of the third lens includes two inflection points.

[0378] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. In addition, the object side surface of the fourth lens includes two inflection points and a critical point, and the image side surface of the fourth lens includes an inflection point and a critical point.

[0379] The fifth lens E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis, and both are aspherical. In addition, the object side surface of the fifth lens includes two inflection points, and the image side surface of the fifth lens includes three inflection points and a critical point.

[0380] The filter element E6 is made of glass, and is disposed between the fifth lens E5 and the imaging surface IMG without affecting the focal length of the optical lens group.

[0381] Please refer to the following Table 10A and Table 10B.

[0382]

[0383]

[0384]

[0385]

[0386] In the tenth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0387] The following data in Table 10C can be derived by combining Table 10A and Table 10B:

[0388]

[0389]

[0390] <Eleventh Embodiment>

[0391] Please refer to Fig.23 , which is a three-dimensional schematic diagram of an image capturing device 100 according to the eleventh embodiment of the present disclosure. Fig.23 It can be seen that the imaging device 100 of the eleventh embodiment is a camera module, and the imaging device 100 includes an imaging lens 101, a driving device group 102, and an electronic photosensitive element 103, wherein the imaging lens 101 includes the optical lens group of the present disclosure and a lens barrel (not separately labeled) that carries the optical lens group. The imaging device 100 uses the imaging lens 101 to focus light and take an image of the object, and cooperates with the driving device group 102 to focus the image, and finally forms an image on the electronic photosensitive element 103, and outputs the image data.

[0392] The driving device group 102 can be an auto-focus module, and its driving method can use a driving system such as a voice coil motor, a micro-electromechanical system, a piezoelectric system, or a memory metal. The driving device group 102 can allow the optical lens group to obtain a better imaging position, and can provide a clear image of the subject at different object distances.

[0393] The image capturing device 100 may be equipped with an electronic photosensitive element 103 (such as CMOS, CCD) with good sensitivity and low noise, which is arranged on the imaging surface of the optical lens group, and can truly present the good imaging quality of the optical lens group. In addition, the image capturing device 100 may further include an image stabilization module 104, which may be a kinetic energy sensing element such as an accelerometer, a gyroscope or a Hall Effect Sensor. In the eleventh embodiment, the image stabilization module 104 is a gyroscope, but is not limited to this. By adjusting the changes in different axes of the optical lens group to compensate for the blurred image caused by shaking at the moment of shooting, the imaging quality of dynamic and low-light scene shooting is further improved, and advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) are provided.

[0394] <Twelfth Embodiment>

[0395] Please refer to Fig.24A , Fig. 24B and Fig.24C ,in Fig.24A A schematic diagram showing one side of an electronic device 200 according to a twelfth embodiment of the present disclosure is shown. Fig. 24B Draw according to Fig.24A A schematic diagram of the other side of the electronic device 200, Fig.24C Draw according to Fig.24A A schematic diagram of a system of an electronic device 200 is shown in FIG. Fig.24A , Fig. 24B and Fig.24CIt can be seen that the electronic device 200 of the twelfth embodiment is a smart phone, and the electronic device 200 includes image capturing devices 100, 110, 120, 130, 140, a flash module 201, a focus assist module 202, an image signal processor 203 (Image Signal Processor; ISP), a user interface 204, and an image software processor 205, wherein the image capturing devices 120, 130, 140 are front lenses. When the user shoots a photograph of a subject 206 through the user interface 204, the electronic device 200 uses the image capturing devices 100, 110, 120, 130, 140 to focus and capture the image, activates the flash module 201 for fill light, and uses the subject distance information provided by the focus assist module 202 for rapid focusing, and the image signal processor 203 and the image software processor 205 perform image optimization processing to further improve the image quality produced by the image lens. The focus assist module 202 may use an infrared or laser focus assist system to achieve fast focus, and the user interface 204 may use a touch screen or a physical capture button to perform image capture and image processing in conjunction with the various functions of the image processing software.

[0396] At least one of the imaging devices 100, 110, 120, 130, and 140 in the twelfth embodiment may include the optical lens group of the present disclosure, and may be the same as or have a similar structure to the imaging device 100 in the aforementioned eleventh embodiment, which will not be described in detail here. In detail, the imaging devices 100 and 110 in the twelfth embodiment may be a wide-angle imaging device and an ultra-wide-angle imaging device, respectively, or may be a wide-angle imaging device and a telephoto imaging device, respectively, and the imaging devices 120, 130, and 140 may be a wide-angle imaging device, an ultra-wide-angle imaging device, and a TOF module (Time-Of-Flight) respectively, but are not limited to this configuration. In addition, the connection relationship between the imaging devices 110, 120, 130, and 140 and other components may be the same as Fig.24C The imaging device 100 shown in the figure is the same as that in the figure, or is adaptively adjusted according to the type of imaging device, and is not further illustrated or described in detail herein.

[0397] <Thirteenth Embodiment>

[0398] Please refer to Fig.25 , which is a schematic diagram of one side of an electronic device 300 according to the thirteenth embodiment of the present disclosure. The electronic device 300 of the thirteenth embodiment is a smart phone, and the electronic device 300 includes imaging devices 310 , 320 , 330 and a flash module 301 .

[0399] The electronic device 300 of the thirteenth embodiment may include the same or similar elements as those in the aforementioned twelfth embodiment, and the connection relationship between the imaging devices 310, 320, 330 and other elements may also be the same or similar to that disclosed in the twelfth embodiment, which will not be described in detail here. The imaging devices 310, 320, 330 in the thirteenth embodiment may all include the optical lens group of the present disclosure, and may all be the same as or have a similar structure to the imaging device 100 in the aforementioned eleventh embodiment, which will not be described in detail here. In detail, the imaging device 310 may be an ultra-wide-angle imaging device, the imaging device 320 may be a wide-angle imaging device, the imaging device 330 may be a telephoto imaging device (which may include an optical path turning element), or may be other types of imaging devices, and are not limited to this configuration.

[0400] <Fourteenth Embodiment>

[0401] Please refer to Fig.26 , which is a schematic diagram of one side of an electronic device 400 according to the fourteenth embodiment of the present disclosure. The electronic device 400 of the fourteenth embodiment is a smart phone, and the electronic device 400 includes imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and a flash module 401.

[0402] The electronic device 400 of the fourteenth embodiment may include the same or similar components as those in the twelfth embodiment, and the connection relationship between the image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and the flash module 401 and other components may also be the same or similar to that disclosed in the twelfth embodiment, and will not be described in detail here. The image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 in the fourteenth embodiment may all include the optical lens group of the present disclosure, and may all be the same or have a similar structure as the image capturing device 100 in the eleventh embodiment, and will not be described in detail here.

[0403] In detail, the imaging devices 410 and 420 may be ultra-wide-angle imaging devices, respectively; the imaging devices 430 and 440 may be wide-angle imaging devices, respectively; the imaging devices 450 and 460 may be telephoto imaging devices, respectively; the imaging devices 470 and 480 may be telephoto imaging devices (which may include optical path turning elements), respectively; the imaging device 490 may be a TOF module, or may be another type of imaging device, and is not limited to this configuration.

[0404] <Fifteenth Embodiment>

[0405] Please refer to Fig.27A as well as Fig.27B ,in Fig.27AA schematic diagram showing one side of an electronic device 500 according to a fifteenth embodiment of the present disclosure is shown. Fig.27B Draw according to Fig.27A Schematic diagram of the other side of the electronic device 500. Fig.27A as well as Fig.27B It can be seen that the electronic device 500 of the fifteenth embodiment is a smart phone, and the electronic device 500 includes imaging devices 510 , 520 , 530 , 540 and a user interface 504 .

[0406] The electronic device 500 of the fifteenth embodiment may include the same or similar components as those in the twelfth embodiment, and the connection relationship between the imaging devices 510, 520, 530, 540 and the user interface 504 and other components may also be the same or similar to that disclosed in the twelfth embodiment, and will not be further described here. In detail, the imaging device 510 may be imaged corresponding to a non-circular opening on the outside of the electronic device 500, and the imaging devices 520, 530, 540 are respectively telephoto imaging devices, wide-angle imaging devices, and ultra-wide-angle imaging devices, or may be other types of imaging devices, and are not limited to this configuration.

[0407] <Sixteenth Embodiment>

[0408] Please refer to Fig.28 , which illustrates a three-dimensional schematic diagram of an electronic device 600 according to the sixteenth embodiment of the present disclosure. Fig.28 It can be seen that the electronic device 600 of the sixteenth embodiment is a drone, which includes an imaging device 610. The imaging device 610 may include an optical lens assembly of the present disclosure, and may be the same as or have a similar structure to the imaging device 100 in the eleventh embodiment, and will not be described in detail herein.

[0409] Although the present disclosure has been disclosed in the above implementation mode, it is not intended to limit the present disclosure. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the definition of the attached claims.

Claims

1. An optical lens assembly, characterized in that: The invention comprises five lenses, and the five lenses are arranged from the object side to the image side as follows: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; The fourth lens has positive refractive power, and its object side surface near the optical axis is convex; The fifth lens has negative refractive power, and its object side surface is concave near the optical axis, and its image side surface is concave near the optical axis; The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, the maximum of T12, T23, T34, and T45 is ATmax, the minimum of T12, T23, T34, and T45 is ATmin, and the object side surface of the first lens is The curvature radius of the surface of the optical lens group is R1, the curvature radius of the object side surface of the fourth lens is R7, the curvature radius of the object side surface of the fifth lens is R9, the distance from the object side surface of the first lens to an imaging plane on the optical axis is TL, the thickness of the fourth lens on the optical axis is CT4, the composite focal length of the fourth lens and the fifth lens is f45, the sum of the thickness of each lens in the optical lens group on the optical axis is ΣCT, and the sum of the distances between each two adjacent lenses in the optical lens group on the optical axis is ΣAT, which satisfies the following conditions: 2.0 <ATmax / ATmin<7.5; -1.50 <R7 / f45<0.00; 9.60 <TL / CT4<18.00; 0.60<ΣCT / ΣAT<1.30; and 0.08<|R9 / R1|<45.

00.

2. The optical lens assembly according to claim 1, wherein: The first lens has positive refractive power, the object side surface of the first lens is convex near the optical axis, and the image side surface of the first lens is concave near the optical axis; the image side surface of the fourth lens includes at least one inflection point.

3. The optical lens assembly according to claim 1, wherein: The distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, and the maximum image height of the optical lens group is ImgH, which satisfies the following conditions: 0.90 <TL / ImgH<1.28。 4. The optical lens assembly according to claim 1, wherein: The object-side surface of the fifth lens includes at least one inflection point; the curvature radius of the image-side surface of the first lens is R2, and the distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis is TD, which satisfies the following conditions: 0.2 <R2 / TD<1.5。 5. The optical lens assembly according to claim 1, wherein: The focal length of the optical lens group is f, 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 focal length of the first lens is f1, and the focal length of the fifth lens is f5, which meets the following conditions: 0.30<|f / R2|-|f / R4|<5.00; and -2.50 <f1 / f5<-1.00。 6. The optical lens assembly according to claim 1, wherein: At least two of the five lenses are made of plastic, and there is an air gap on the optical axis between any two adjacent lenses among the five lenses; the Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, and the smallest of V1, V2, V3, V4, V5 is Vmin, which satisfies the following conditions: 10.0 < Vmin < 22.

0.

7. The optical lens assembly according to claim 1, wherein: The distance between the third lens and the fourth lens on the optical axis is T34, the thickness of the second lens on the optical axis is CT2, the Abbe number of the first lens is V1, and the Abbe number of the second lens is V2, which satisfies the following conditions: 0.8 < T34 / CT2 < 4.0; and 2.50 < V1 / V2 < 4.

00.

8. The optical lens assembly according to claim 1, wherein: The f-number of the optical lens group is Fno, which satisfies the following conditions: 1.80 < Fno < 2.

65.

9. The optical lens assembly according to claim 1, wherein: The incident angle of the chief ray of the largest field of view in the optical lens group with respect to the imaging surface is CRA, the thickness of the third lens on the optical axis is CT3, and the distance parallel to the optical axis between the maximum effective radius of the object side surface of the third lens and the maximum effective radius of the image side surface of the third lens is ET3, which satisfies the following conditions: 0.70 < tan(CRA) < 1.15; and 0.83 < CT3 / ET3 < 2.

50.

10. The optical lens assembly according to claim 1, wherein: The maximum effective radius of the object side surface of the second lens is Y2R1, the maximum effective radius of the object side surface of the fifth lens is Y5R1, the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is TD, and the entrance pupil diameter of the optical lens group is EPD, which satisfies the following conditions: 2.70 < Y5R1 / Y2R1 < 4.70; and 1.70 < TD / EPD < 2.

60.

11. An imaging device, characterized in that: Comprising: The optical lens group according to claim 1; and An electronic photosensitive element disposed on the imaging surface of the optical lens group.

12. An electronic device, characterized in that: Comprising: The imaging device according to claim 11.

13. An optical lens assembly, characterized in that: Comprising five lenses, and the five lenses are, from the object side to the image side: A first lens, a second lens, a third lens, a fourth lens, and a fifth lens; each of the lenses has an object side surface facing the object side and an image side surface facing the image side; Wherein, the image side surface of the first lens near the optical axis is concave; The object side surface of the fourth lens near the optical axis is convex; The object side surface of the fifth lens near the optical axis is concave, and the image side surface of the fifth lens includes at least one inflection point; Among them, the spacing distance between the first lens and the second lens on the optical axis is T12, the spacing distance between the second lens and the third lens on the optical axis is T23, the spacing distance between the third lens and the fourth lens on the optical axis is T34, the spacing distance between the fourth lens and the fifth lens on the optical axis is T45. The largest of T12, T23, T34, T45 is ATmax, the smallest of T12, T23, T34, T45 is ATmin. The radius of curvature of the object side surface of the fourth lens is R7. The distance from the object side surface of the first lens to an imaging surface on the optical axis is TL. The focal length of the optical lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the combined focal length of the fourth lens and the fifth lens is f45. The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, 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 largest of CT1, CT2, CT3, CT4, CT5 is CTmax, the smallest of CT1, CT2, CT3, CT4, CT5 is CTmin, and they satisfy the following conditions: 2.0 < ATmax / ATmin < 7.5; -1.50 < R7 / f45 < 0.00; 9.60 < TL / CT4 < 18.00; 0.03 < |f / f3| + |f / f4| < 1.60; and 1.40 < CTmax / CTmin < 2.

80.

14. The optical lens assembly according to claim 13, wherein: The first lens has positive refractive power, and the object side surface of the first lens is convex near the optical axis; the fourth lens has positive refractive power; the fifth lens has negative refractive power, the image side surface of the fifth lens is concave near the optical axis, and the image side surface of the fifth lens includes at least one critical point.

15. The optical lens assembly according to claim 13, wherein: Half of the maximum viewing angle in the optical lens group is HFOV, and it satisfies the following conditions: 0.83 < tan(HFOV) < 1.

30.

16. The optical lens assembly according to claim 13, wherein: The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, the focal length of the fifth lens is f5, the radius of curvature of the object side surface of the first lens is R1, and the radius of curvature of the image side surface of the fifth lens is R10, and they satisfy the following conditions: -1.80 < TL / f5 < -0.90; and 1.00 < |R10 / R1| < 3.

80.

17. The optical lens assembly according to claim 13, wherein: Further comprising: An aperture is disposed on one object side of the third lens; Among them, 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 fifth lens is R10, and they satisfy the following conditions: 0.4 < R10 / R2 < 8.

5.

18. The optical lens assembly according to claim 13, wherein: The image side surface of the fourth lens includes at least one critical point, and at least one surface of at least three lenses from the first lens to the fifth lens is an aspherical surface; where the maximum effective radius of the object side surface of the first lens is Y1R1, and the maximum image height of the optical lens group is ImgH, and they satisfy the following conditions: 0.13 < Y1R1 / ImgH < 0.

25.

19. The optical lens assembly according to claim 13, wherein: The horizontal displacement amount on the optical axis from the intersection point of the image-side surface of the fifth lens on the optical axis to the position of the maximum effective radius of the image-side surface of the fifth lens is SAG5R2, and the thickness of the fifth lens on the optical axis is CT5, which satisfies the following conditions: -3.50 < SAG5R2 / CT5 < -1.

00.

20. An optical lens assembly, characterized in that: It includes five lenses, and the five lenses are, from the object side to the image side: A first lens, a second lens, a third lens, a fourth lens, and a fifth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; Among them, the image-side surface of the first lens is concave near the optical axis; The object-side surface of the fourth lens is convex near the optical axis, and the object-side surface of the fourth lens includes at least one inflection point; The fifth lens has a negative refractive power, and its object-side surface is concave near the optical axis; Among them, the distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, the largest of T12, T23, T34, T45 is ATmax, the smallest of T12, T23, T34, T45 is ATmin, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the fourth lens is R7, the focal length of the optical lens group is f, the combined focal length of the first lens and the second lens is f12, the combined focal length of the fourth lens and the fifth lens is f45, the sum of the thicknesses of each lens of the optical lens group on the optical axis is ΣCT, and the sum of the distances between each two adjacent lenses of the optical lens group on the optical axis is ΣAT, which satisfies the following conditions: 2.00 < ATmax / ATmin < 6.20; -1.25 < R7 / f45 < -0.03; 0.60 < ΣCT / ΣAT < 1.20; 0.60 < f / f12 < 1.10; and 0.30 < |R2 / R1| < 12.

00.

21. The optical lens assembly according to claim 20, wherein: The first lens has a positive refractive power, and its object-side surface is convex near the optical axis; the fourth lens has a positive refractive power, and the object-side surface of the fourth lens includes at least one critical point; the image-side surface of the fifth lens is concave near the optical axis.

22. The optical lens assembly according to claim 20, wherein: The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, the largest of T12, T23, T34, T45 is ATmax, the distance from the object side surface of the first lens to an imaging surface on the optical axis is TL, and the distance from the image side surface of the fifth lens to the imaging surface on the optical axis is BL, and they satisfy the following conditions: T45 = ATmax; and 4.50 < TL / BL < 7.

00.

23. The optical lens assembly according to claim 20, wherein: The distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, the distance from the object side surface of the first lens to an imaging surface on the optical axis is TL, and the focal length of the fifth lens is f5, and they satisfy the following conditions: 0.90 < T45 / T34 < 2.60; and -1.80 < TL / f5 < -0.

90.

24. The optical lens assembly according to claim 20, wherein: The distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is TD, the thickness of the fifth lens on the optical axis is CT5, the Abbe number of the second lens is V2, and the Abbe number of the third lens is V3, and they satisfy the following conditions: 7.00 < TD / CT5 < 15.00; and 0.20 < V2 / V3 < 0.

48.

25. The optical lens assembly according to claim 20, wherein: The horizontal displacement on the optical axis from the intersection of the object side surface of the first lens on the optical axis to the position of the maximum effective radius of the object side surface of the first lens is SAG1R1, the horizontal displacement on the optical axis from the intersection of the object side surface of the fourth lens on the optical axis to the position of the maximum effective radius of the object side surface of the fourth lens is SAG4R1, the distance parallel to the optical axis between the position of the maximum effective radius of the object side surface of the fourth lens and the position of the maximum effective radius of the image side surface of the fourth lens is ET4, and the radius of curvature of the object side surface of the first lens is R1, and they satisfy the following conditions: -1.60 < SAG4R1 / ET4 < -0.25; and 1.50 < 10×SAG1R1 / R1 < 2.

70.

26. The optical lens assembly according to claim 20, wherein: The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, the maximum of T12, T23, T34, and T45 is ATmax, and the minimum of T12, T23, T34, and T45 is ATmin. The radius of curvature of the object side surface of the first lens is R1, the radius of curvature of the image side surface of the first lens is R2, 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 fifth lens is R9. The distance from the object side surface of the first lens to an imaging plane on the optical axis is TL. The focal length of the optical lens group is f. The focal length of the first lens is f3, the focal length of the fourth lens is f4, the composite focal length of the first lens and the second lens is f12, the composite focal length of the fourth lens and the fifth lens is f45, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, 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 maximum of CT1, CT2, CT3, CT4, and CT5 is CTmax, the minimum of CT1, CT2, CT3, CT4, and CT5 is CTmin, the sum of the thicknesses of the lenses in the optical lens group on the optical axis is ΣCT, the sum of the distances between two adjacent lenses in the optical lens group on the optical axis is ΣAT, which satisfies the following conditions: 3.34≤ATmax / ATmin≤4.36; -0.32≤R7 / f45≤-0.15; 10.79≤TL / CT4≤13.57; 0.82≤ΣCT / ΣAT≤1.20; 1.49≤|R9 / R1|≤11.73; 0.57≤|f / f3|+|f / f4|≤1.28; 1.44≤CTmax / CTmin≤2.54; 0.77≤f / f12≤1.00; and 2.01≤|R2 / R1|≤2.54.

Images