Image capturing lens assembly, image capturing device and electronic device

Abstract

The invention discloses an image capturing lens group which comprises six lens groups. The six lens groups are sequentially a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a sixth lens group from the object side to the image side along an optical path. The first lens group, the second lens group, the third lens group, the fifth lens group and the sixth lens group are each a single lens. The fourth lens group is composed of a single lens or two lenses, and the fourth lens group at least comprises a front lens. The total number of lenses of the image capturing lens group is six to seven. The first lens group image-side surface is concave in a paraxial region. The third lens group has an object-side surface being convex in a paraxial region thereof. The front lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. When specific conditions are met, the image capturing lens group can simultaneously meet the requirements of proper viewing angle, miniaturization and high imaging quality. The invention discloses an image capturing device with the image capturing lens group and an electronic device with the image capturing device.

Description

Technical Field

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

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

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

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

[0005] The present disclosure provides an imaging lens assembly, comprising two lens groups. The two lens groups are sequentially a first lens group and a second lens group along an optical path from the object side to the image side. The two lens groups include six lens groups. The six lens groups are sequentially a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a sixth lens group along an optical path from the object side to the image side. The first lens group includes a first lens group, a second lens group and a third lens group. The second lens group includes a front lens group and a rear lens group. The front lens group includes a fourth lens group. The rear lens group includes a fifth lens group and a sixth lens group.

[0006] Preferably, the first lens group, the second lens group, the third lens group, the fifth lens group and the sixth lens group are each a single lens. Preferably, the fourth lens group is a single lens or a lens group consisting of two lenses. When the fourth lens group is a single lens, the fourth lens group includes a front lens; when the fourth lens group is a lens group consisting of two lenses, the fourth lens group includes a front lens and a rear lens in sequence from the object side to the image side along the optical path.

[0007] Preferably, the total number of lens groups of the imaging lens group is two. Preferably, the total number of lens groups of the imaging lens group is six. Preferably, the total number of lenses of the imaging lens group is six to seven. Preferably, all lenses of the imaging lens group respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. Preferably, there are no other interpolated lenses between the first lens group to the sixth lens group.

[0008] Preferably, the image-side surface of the first lens group is concave near the optical axis. Preferably, the object-side surface of the third lens group is convex near the optical axis. Preferably, the front lens has a negative refractive power. Preferably, the image-side surface of the front lens is concave near the optical axis.

[0009] Let the maximum viewing angle in the imaging lens group be FOV, the distance on the optical axis from the image-side surface of the front lens to the object-side surface of the fifth lens group be Dra2r9, the distance on the optical axis of the first lens group be DG1, the distance on the optical axis of the front lens group be DG2f, the thickness of the front lens on the optical axis be CTa, the thickness of the fifth lens group on the optical axis be CT5, the distance on the optical axis from the object-side surface of the first lens group to the imaging surface be TL, the distance on the optical axis between the first lens group and the second lens group be T12, the entrance pupil diameter of the imaging lens group be EPD, the focal length of the imaging lens group be f, the combined focal length of the first lens group and the second lens group be f12, the combined focal length of the second lens group and the third lens group be f23, and the focal length of the front lens group be fG2f. Preferably, they satisfy the following conditions:

[0010] 10.0 degrees < FOV < 45.0 degrees;

[0011] 0.65 < Dra2r9 / CT5 < 2.10;

[0012] DG1 / DG2f < 1.68;

[0013] 2.40 < TL / EPD < 4.10;

[0014] -1.30 < f / f23 - |f / f12| + f / fG2f < 3.00; and

[0015] 10 × T12 / CTa < 2.50.

[0016] The present disclosure further provides an imaging lens group, which includes two lens groups. The two lens groups are sequentially the first lens group and the second lens group along the optical path from the object side to the image side. The two lens groups include six lens groups. The six lens groups are sequentially the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group along the optical path from the object side to the image side. The first lens group includes the first lens group, the second lens group, and the third lens group. The second lens group includes the front lens group and the rear lens group. The front lens group includes the fourth lens group. The rear lens group includes the fifth lens group and the sixth lens group.

[0017] Preferably, the first lens group, the second lens group, the third lens group, the fifth lens group, and the sixth lens group are each a single-piece lens. Preferably, the fourth lens group is a single-piece lens or a cemented lens composed of two lenses. When the fourth lens group is a single-piece lens, the fourth lens group includes the front lens; when the fourth lens group is a cemented lens composed of two lenses, the fourth lens group sequentially includes the front lens and the rear lens along the optical path from the object side to the image side.

[0018] Preferably, the total number of lens groups in the imaging lens group is two. Preferably, the total number of lens groups in the imaging lens group is six. Preferably, the total number of lens elements in the imaging lens group is six to seven. Preferably, all the lenses in the imaging lens group respectively have an object-side surface facing the object side and an image-side surface facing the image side. Preferably, there are no other interpolated lenses between the first lens group and the sixth lens group.

[0019] Preferably, the image-side surface of the first lens group is concave near the optical axis. Preferably, the object-side surface of the third lens group is convex near the optical axis. Preferably, the front lens has a negative refractive power. Preferably, the image-side surface of the front lens is concave near the optical axis.

[0020] Let the maximum viewing angle in the imaging lens group be FOV, the distance of the first lens group on the optical axis be DG1, the distance of the front lens group on the optical axis be DG2f, the distance from the object-side surface of the first lens group to the imaging surface on the optical axis be TL, the entrance pupil diameter of the imaging lens group be EPD, the radius of curvature of the most object-side surface of the fourth lens group be RU4f, the radius of curvature of the most image-side surface of the fourth lens group be RU4r, the focal length of the second lens group be f2, the focal length of the third lens group be f3, and the focal length of the fifth lens group be f5. It preferably satisfies the following conditions:

[0021] 15.0 degrees < FOV < 42.0 degrees;

[0022] DG1 / DG2f < 1.68;

[0023] 2.40 < TL / EPD < 4.10;

[0024] RU4f / RU4r < 7.50; and

[0025] 1.60 < |f3 + f5| / |f2|.

[0026] The present disclosure further provides an imaging lens group, including two lens groups. The two lens groups are sequentially the first lens group and the second lens group along the optical path from the object side to the image side. The two lens groups include six lens groups. The six lens groups are sequentially the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group along the optical path from the object side to the image side. The first lens group includes the first lens group, the second lens group, and the third lens group. The second lens group includes a front lens group and a rear lens group. The front lens group includes the fourth lens group. The rear lens group includes the fifth lens group and the sixth lens group.

[0027] Preferably, the first lens group, the second lens group, the third lens group, the fifth lens group, and the sixth lens group are each a single-piece lens. Preferably, the fourth lens group is a lens group composed of two lenses, and the fourth lens group sequentially includes a front lens and a rear lens along the optical path from the object side to the image side.

[0028] Preferably, the total number of lens groups of the imaging lens group is two. Preferably, the total number of lens groups of the imaging lens group is six. Preferably, the total number of lens elements of the imaging lens group is seven. Preferably, all the lenses of the imaging lens group respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction. Preferably, there are no other interpolated lenses between the first lens group and the sixth lens group.

[0029] Preferably, the object-side surface of the third lens group is convex near the optical axis. Preferably, the object-side surface of the front lens is concave near the optical axis. Preferably, the sixth lens group has a negative refractive power.

[0030] The maximum viewing angle in the imaging lens group is FOV, the distance on the optical axis from the object-side surface of the front lens to the object-side surface of the fifth lens group is Dra1r9, the distance on the optical axis from the image-side surface of the front lens to the object-side surface of the fifth lens group is Dra2r9, the thickness of the first lens group on the optical axis is CT1, the thickness of the second lens group on the optical axis is CT2, the thickness of the fifth lens group on the optical axis is CT5, and the distance between the front lens and the rear lens on the optical axis is Tab, which preferably satisfies the following conditions:

[0031] 10.0 degrees < FOV < 55.0 degrees;

[0032] 0.50 < Dra2r9 / CT5 < 2.30;

[0033] 3.0 < Dra1r9 / CT1 < 15.0; and

[0034] 1.80 < 0.1×CT2 / Tab.

[0035] The present disclosure provides an imaging device, which includes the aforementioned imaging lens group and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging lens group.

[0036] The present disclosure provides an electronic device, which includes the aforementioned imaging device.

[0037] When FOV satisfies the above conditions, the imaging lens group can have an appropriate field of view to meet the image requirements of the application device.

[0038] When Dra2r9 / CT5 satisfies the above conditions, the distance between the front lens and the fifth lens group and the central thickness of the fifth lens group can be balanced, which helps to maintain the optimal spatial configuration and reduce the sensitivity of the imaging lens group.

[0039] When DG1 / DG2f satisfies the above conditions, it helps to adjust the length ratio relationship between the front section and the middle section of the imaging lens group to avoid excessive total length.

[0040] When TL / EPD meets the above conditions, the imaging lens group can maintain the form of a telephoto imaging system and simultaneously achieve a balance between the total length and the amount of light entering.

[0041] When f / f23-|f / f12|+f / fG2f meets the above conditions, it can effectively share the overall refractive force strength of the imaging lens group, balance the optical path of the telephoto lens system, and improve the imaging quality.

[0042] When 10×T12 / CTa meets the above conditions, the distance between the first lens group and the second lens group and the center thickness of the front lens can be controlled, which helps to coordinate and adjust the optical path of the front section of the imaging lens group while reducing manufacturing tolerances.

[0043] When RU4f / RU4r meets the above conditions, adjusting the range of the central curvature radius of the most image-side surface of the fourth lens group and the central curvature of the most object-side surface of the fourth lens group helps to harmonize the optical path and reduce aberrations.

[0044] When |f3+f5| / |f2| meets the above conditions, it helps to balance the convergence or divergence of the incident light, so as to adjust the optical path of the telephoto lens system and improve the focusing quality of the entire field of view.

[0045] When Dra1r9 / CT1 meets the above conditions, the ratio of the distance between the object side surface of the front lens and the fifth lens group and the center thickness of the first lens group can be adjusted to ensure that the imaging lens group has sufficient distance for the optical path to extend without excessively lengthening the total length of the imaging lens group.

[0046] When 0.1×CT2 / Tab meets the above conditions, it can ensure that the second lens group has a certain center thickness, which helps to enhance the mechanical strength of the second lens group and reduce the sensitivity of the imaging lens group.

[0047] The above description of the contents of the present disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present disclosure, and to provide further explanation of the claims of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of an imaging device according to a first embodiment of the present disclosure is shown.

[0049] Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment.

[0050] Figure 3 A schematic diagram of an imaging device according to a second embodiment of the present disclosure is shown.

[0051] Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment.

[0052] Figure 5 A schematic diagram of an imaging device according to a third embodiment of the present disclosure is shown.

[0053] Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment.

[0054] Figure 7 A schematic diagram of an imaging device according to a fourth embodiment of the present disclosure is shown.

[0055] Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment.

[0056] Fig. 9 A schematic diagram of an imaging device according to a fifth embodiment of the present disclosure is shown.

[0057] Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment.

[0058] Fig.11 A schematic diagram of an imaging device according to a sixth embodiment of the present disclosure is shown.

[0059] Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment.

[0060] Fig.13 A schematic diagram of an imaging device according to a seventh embodiment of the present disclosure is shown.

[0061] Fig.14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment.

[0062] Fig.15 A schematic diagram of an imaging device according to an eighth embodiment of the present disclosure is shown.

[0063] Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment.

[0064] Fig.17 A schematic diagram of an imaging device according to a ninth embodiment of the present disclosure is shown.

[0065] Fig.18 From left to right are the spherical aberration, astigmatism and distortion curves of the ninth embodiment.

[0066] Fig.19 A schematic diagram of an imaging device according to a tenth embodiment of the present disclosure is shown.

[0067] Fig. 20 From left to right are the spherical aberration, astigmatism and distortion curves of the tenth embodiment.

[0068] Fig.21 A schematic diagram of an imaging device according to an eleventh embodiment of the present disclosure is shown.

[0069] Fig. 22 From left to right are the spherical aberration, astigmatism and distortion curves of the eleventh embodiment.

[0070] Fig.23 A three-dimensional schematic diagram of an imaging device according to a twelfth embodiment of the present disclosure is shown.

[0071] Fig.24 A three-dimensional schematic diagram of one side of an electronic device according to a thirteenth embodiment of the present disclosure is shown.

[0072] Fig.25 Draw Fig.24 A three-dimensional schematic diagram of the other side of the electronic device.

[0073] Fig.26 A three-dimensional schematic diagram of one side of an electronic device according to a fourteenth embodiment of the present disclosure is shown.

[0074] Fig. 27 Draw Fig.26 A three-dimensional schematic diagram of the other side of the electronic device.

[0075] Fig.28 Draw Fig.26 A system block diagram of an electronic device.

[0076] Fig.29 A three-dimensional schematic diagram of one side of an electronic device according to a fifteenth embodiment of the present disclosure is shown.

[0077] Fig.30 A three-dimensional schematic diagram of one side of an electronic device according to a sixteenth embodiment of the present disclosure is shown.

[0078] Fig.31 A three-dimensional schematic diagram of an electronic device according to a seventeenth embodiment of the present disclosure is shown.

[0079] Fig.32 Draw Fig.31 A schematic side view of an electronic device.

[0080] Fig.33 Draw Fig.31 A top view schematic diagram of an electronic device.

[0081] Fig.34 A schematic diagram of an electronic device according to an eighteenth embodiment of the present disclosure is shown.

[0082] Fig.35 A schematic diagram illustrating inflection points on a lens surface according to a ninth embodiment of the present disclosure is shown.

[0083] Fig.36 A schematic diagram illustrating parameters DG1, DG2, DG2f, Dra1r9, Dra2r9, and CTa in the first embodiment of the present disclosure is shown.

[0084] Fig.37 FIG. 4 is a schematic diagram showing parameters DG1 , DG2 , DG2f , Dra1r9 , Dra2r9 , and CTa in a ninth embodiment of the present disclosure.

[0085] Fig.38 FIG. 4 is a schematic diagram showing parameters ETa, ET5, Y1R1, Y2R1, and Y6R2 in the first embodiment of the present disclosure.

[0086] Fig.39 A schematic diagram showing a configuration relationship of an optical path turning element in an imaging lens assembly according to the present disclosure is shown.

[0087] Fig.40 A schematic diagram showing another configuration relationship of an optical path turning element in an imaging lens assembly according to the present disclosure is shown.

[0088] Fig.41 A schematic diagram showing a configuration relationship of two optical path turning elements in an imaging lens assembly according to the present disclosure is shown.

[0089]

Explanation of symbols

[0090] 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g , 100h, 100i, 100j, 100k, 100m, 100n, 100p, 100q, 100r, 100s, 601, 701: imaging device

[0091] 101: Imaging Lens

[0092] 102: Driving device

[0093] 103: Electronic photosensitive element

[0094] 104: Image stabilization module

[0095] 200, 300, 400, 500, 600, 700: Electronic device

[0096] 201, 304: Display module

[0097] 301, 401, 501: Flash module

[0098] 302: Focus assist module

[0099] 303: Image Signal Processor

[0100] 305: Image software processor

[0101] 306: Subject

[0102] P: Inflection point

[0103] OA1: First optical axis

[0104] OA2: Second optical axis

[0105] OA3: Third optical axis

[0106] LF: Light path turning element

[0107] LF1: First optical path turning element

[0108] LF2: Second optical path turning element

[0109] LG: Lens Group

[0110] ST: Aperture

[0111] S1, S2: aperture

[0112] E1: First lens group

[0113] E2: Second lens group

[0114] E3: The third lens group

[0115] E4: The fourth lens group

[0116] E5: The fifth lens group

[0117] E6: Sixth lens group

[0118] E7: Filter element

[0119] Ea: Front lens

[0120] Eb: rear lens

[0121] G1: First mirror group

[0122] G2: Second mirror group

[0123] G2f: Front mirror group

[0124] G2r: Rear mirror group

[0125] IMG: Imaging surface

[0126] IS: Electronic photosensitive element

[0127] CTa: Thickness of the front lens on the optical axis

[0128] DG1: The distance of the first mirror group on the optical axis

[0129] DG2: The distance of the second mirror group on the optical axis

[0130] DG2f: Distance between the front mirror group and the optical axis

[0131] Dra1r9: The distance from the object side surface of the front lens to the object side surface of the fifth lens group on the optical axis

[0132] Dra2r9: The distance on the optical axis from the image-side surface of the front lens to the object-side surface of the fifth lens group

[0133] ET5: The distance parallel to the optical axis between the maximum effective radius position of the object side surface of the fifth lens group and the maximum effective radius position of the image side surface of the fifth lens group

[0134] ETa: The distance parallel to the optical axis between the maximum effective radius position of the front lens object side surface and the maximum effective radius position of the front lens image side surface

[0135] Y1R1: Maximum effective radius of the object side surface of the first lens group

[0136] Y2R1: Maximum effective radius of the object side surface of the second lens group

[0137] Y6R2: Maximum effective radius of the image-side surface of the sixth lens group DETAILED DESCRIPTION

[0138] The imaging lens assembly includes two lens groups. The two lens groups are sequentially the first lens group and the second lens group from the object side to the image side along the optical path. The two lens groups include six lens groups. The six lens groups are sequentially the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group and the sixth lens group along the optical path from the object side to the image side. The first lens group includes the first lens group, the second lens group and the third lens group. The second lens group includes the front lens group and the rear lens group. The front lens group includes the fourth lens group. The rear lens group includes the fifth lens group and the sixth lens group.

[0139] The first lens group, the second lens group, the third lens group, the fifth lens group and the sixth lens group are each a single lens. In this case, the first lens group, the second lens group, the third lens group, the fifth lens group and the sixth lens group can also be understood as the first lens, the second lens, the third lens, the fifth lens and the sixth lens, respectively. The fourth lens group can be a single lens, or can be a lens group composed of two lenses or a cemented lens. When the fourth lens group is a single lens, it can be understood that the fourth lens group includes a front lens; thereby, it helps to reduce manufacturing tolerances and production costs. When the fourth lens group is a lens group composed of two lenses, it can be understood that the fourth lens group includes a front lens and a rear lens in sequence along the optical path from the object side to the image side; thereby, more variables can be provided to control the optical path to increase the degree of freedom in design. When the fourth lens group is a cemented lens composed of two lenses, it can be understood that the fourth lens group includes a front lens and a rear lens that are cemented to each other in sequence from the object side to the image side along the optical path; thereby, the refractive index difference between the lenses can be reduced by bonding, which can effectively reduce the reflection generated when the light is refracted, and avoid the occurrence of ghosting and other phenomena. In some cases, the front lens can also be understood as the most object-side lens of the fourth lens group, and the rear lens can also be understood as the most image-side lens of the fourth lens group.

[0140] The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group can be six to seven. Among them, the total number of lenses of the imaging lens group can be seven. All lenses of the imaging lens group respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. There are no other interpolated lenses between the first lens group to the sixth lens group.

[0141] The image-side surface of the first lens group can be concave near the optical axis, thereby facilitating light collection and preventing light from diverging.

[0142] The object side surface of the third lens group is convex near the optical axis, which helps to focus the light, effectively control the direction of the light path, and correct aberrations.

[0143] The front lens may have negative refractive power, thereby effectively balancing the lens refractive power configuration and achieving a balance between image size and volume distribution. The object side surface of the front lens may be concave near the optical axis, thereby helping to increase the image surface and correct spherical aberration and coma. The image side surface of the front lens may be concave near the optical axis, thereby adjusting the surface shape of the image side surface of the fourth lens group's most object side lens (front lens) to cooperate with subsequent lenses to reduce the size of aberrations.

[0144] The rear lens is disposed between the front lens and the fifth lens group. The rear lens may have positive refractive power; thereby, it can cooperate with the most object-side lens (front lens) of the fourth lens group to correct the aberration of the imaging lens group. The object-side surface of the rear lens may be convex near the optical axis; thereby, the surface shape of the object-side surface of the rear lens can be adjusted, which helps to converge light to compress the volume.

[0145] The sixth lens group may have a negative refractive power. Thereby, it helps to correct distortion and reduce the length of the back focal length.

[0146] The imaging lens group disclosed according to the present disclosure may further include a diaphragm. The diaphragm may be disposed on the object side of the second lens group. Thereby, the diaphragm position can be controlled to limit the incident angle of incident light, which helps to improve the imaging quality.

[0147] In the imaging lens group disclosed according to the present disclosure, at least one lens in the first lens group may have at least one of its object-side surface and its image-side surface being a spherical surface; thereby, in combination with the selection of glass material, it helps to avoid image distortion caused by temperature effects. Among them, at least three lenses in the imaging lens group may each have at least one of its object-side surface and its image-side surface being a spherical surface; thereby, manufacturability can be effectively improved, and glass material can be used in combination, which helps to reduce the influence brought by temperature effects.

[0148] In the imaging lens group disclosed according to the present disclosure, at least one lens may be made of glass material. Thereby, temperature effects can be effectively improved, and the degree to which the image quality is affected by the environment can be reduced.

[0149] In the imaging lens group disclosed according to the present disclosure, there may be no relative movement between the lenses. Thereby, good imaging quality can be ensured, and the difficulty in structural design and assembly can be reduced.

[0150] In the imaging lens group disclosed according to the present disclosure, at least one lens may have at least one inflection point on at least one of its object-side surface and its image-side surface; thereby, the surface shape design around the lens can be adjusted to facilitate the correction of field curvature. Please refer to Fig.35 , which is a schematic diagram showing the inflection point P on the lens surface in the ninth embodiment according to the present disclosure. Fig.35 The inflection points on the surfaces of the second, fifth, and sixth lens groups in the ninth embodiment according to the present disclosure are shown as an exemplary illustration. However, in other embodiments of the present disclosure, each lens surface may have one or more inflection points.

[0151] The maximum viewing angle of the imaging lens group is FOV, which satisfies the following conditions: 10.0 degrees < FOV < 55.0 degrees. Thereby, the imaging lens group can have an appropriate viewing range to meet the image requirements of the application device. Among them, the following conditions may also be satisfied: 10.0 degrees < FOV < 45.0 degrees. Among them, the following conditions may also be satisfied: 15.0 degrees < FOV < 42.0 degrees. Among them, the following conditions may also be satisfied: 25.0 degrees < FOV < 42.0 degrees. Among them, the following conditions may also be satisfied: 29.8 degrees ≤ FOV ≤ 37.0 degrees.

[0152] The distance from the image-side surface of the front lens to the object-side surface of the fifth lens group on the optical axis is Dra2r9, and the thickness of the fifth lens group on the optical axis is CT5, which can satisfy the following conditions: 0.50 < Dra2r9 / CT5 < 2.30. Thereby, the distance between the front lens and the fifth lens group and the central thickness of the fifth lens group can be balanced, which helps to maintain the optimal spatial configuration and reduce the sensitivity of the imaging lens group. Among them, the following conditions can also be satisfied: 0.65 < Dra2r9 / CT5 < 2.10. Among them, the following conditions can also be satisfied: 0.70 < Dra2r9 / CT5 < 2.00. Among them, the following conditions can also be satisfied: 0.81 ≤ Dra2r9 / CT5 ≤ 1.81. Among them, the following conditions can also be satisfied: 0.98 ≤ Dra2r9 / CT5 ≤ 1.91. Please refer to Fig.36 , which is a schematic diagram showing the parameter Dra2r9 in the first embodiment of the present disclosure. Please refer to Fig.37 , which is a schematic diagram showing the parameter Dra2r9 in the ninth embodiment of the present disclosure.

[0153] The distance of the first lens group on the optical axis is DG1, and the distance of the front lens group on the optical axis is DG2f, which can satisfy the following conditions: DG1 / DG2f < 1.80. Thereby, it helps to adjust the length ratio relationship between the front section and the middle section of the imaging lens group to avoid too long total length. Among them, the following conditions can also be satisfied: DG1 / DG2f < 1.68. Among them, the following conditions can also be satisfied: 0.50 < DG1 / DG2f < 1.60. Among them, the following conditions can also be satisfied: 0.60 ≤ DG1 / DG2f ≤ 1.44. Please refer to Fig.36 , which is a schematic diagram showing the parameters DG1 and DG2f in the first embodiment of the present disclosure. Please refer to Fig.37 , which is a schematic diagram showing the parameters DG1 and DG2f in the ninth embodiment of the present disclosure.

[0154] The distance from the object-side surface of the first lens group to the imaging surface on the optical axis is TL, and the entrance pupil diameter of the imaging lens group is EPD, which can satisfy the following conditions: 1.50 < TL / EPD < 4.10. Thereby, the imaging lens group can maintain the form of a telephoto imaging system and at the same time balance the total length and the light entrance amount. Among them, the following conditions can also be satisfied: 2.40 < TL / EPD < 4.10. Among them, the following conditions can also be satisfied: 2.50 < TL / EPD < 3.95. Among them, the following conditions can also be satisfied: 2.71 ≤ TL / EPD ≤ 3.73.

[0155] The focal length of the imaging lens group is f, the combined focal length of the first lens group and the second lens group is f12, the combined focal length of the second lens group and the third lens group is f23, and the focal length of the front lens group is fG2f, which can satisfy the following conditions: -1.50 < f / f23 - |f / f12| + f / fG2f < 3.50. Thereby, the refractive power intensity of the entire imaging lens group can be effectively shared, the optical path of the telephoto lens system can be balanced, and the imaging quality can be improved. Among them, the following conditions can also be satisfied: -1.30 < f / f23 - |f / f12| + f / fG2f < 3.00. Among them, the following conditions can also be satisfied: -1.00 < f / f23 - |f / f12| + f / fG2f < 2.70. Among them, the following conditions can also be satisfied: -0.81 ≤ f / f23 - |f / f12| + f / fG2f ≤ 2.28.

[0156] The distance between the first lens group and the second lens group on the optical axis is T12, and the thickness of the front lens on the optical axis is CTa, which can satisfy the following conditions: 10×T12 / CTa < 2.50. Thereby, the distance between the first lens group and the second lens group and the center thickness of the front lens can be controlled, which helps to adjust the optical path of the front section of the imaging lens group and reduce manufacturing tolerances at the same time. Among them, the following conditions can also be satisfied: 10×T12 / CTa < 2.20. Among them, the following conditions can also be satisfied: 0.06 ≤ 10×T12 / CTa ≤ 1.31. Please refer to Fig.36 , which is a schematic diagram showing the parameter CTa in the first embodiment according to the present disclosure. Please refer to Fig.37 , which is a schematic diagram showing the parameter CTa in the ninth embodiment according to the present disclosure.

[0157] The radius of curvature of the object-side surface of the fourth lens group is RU4f, and the radius of curvature of the image-side surface of the fourth lens group is RU4r, which can satisfy the following conditions: RU4f / RU4r < 7.50. By adjusting the range of the center radius of curvature of the image-side surface of the fourth lens group and the center curvature of the object-side surface of the fourth lens group, it helps to reconcile the optical path and reduce aberration. Among them, the following conditions can also be satisfied: RU4f / RU4r < 5.50. Among them, the following conditions can also be satisfied: RU4f / RU4r < 3.50. Among them, the following conditions can also be satisfied: -2.91 ≤ RU4f / RU4r ≤ 1.98.

[0158] The focal length of the second lens group is f2, the focal length of the third lens group is f3, and the focal length of the fifth lens group is f5, which can satisfy the following conditions: 1.60 < |f3 + f5| / |f2|. Thereby, it helps to balance the convergence or divergence of incident light to adjust the optical path of the telephoto lens system and improve the light-gathering quality of the entire field of view. Among them, the following conditions can also be satisfied: 2.00 < |f3 + f5| / |f2|. Among them, the following conditions can also be satisfied: 1.75 ≤ |f3 + f5| / |f2| ≤ 48.28.

[0159] The distance from the object side surface of the front lens to the object side surface of the fifth lens group on the optical axis is Dra1r9, and the thickness of the first lens group on the optical axis is CT1, which can satisfy the following conditions: 3.0 < Dra1r9 / CT1 < 15.0. Thus, the ratio of the distance between the object side surface of the front lens and the fifth lens group and the central thickness of the first lens group can be adjusted to ensure that the imaging lens group has sufficient distance for the optical path to extend without overly lengthening the total length of the imaging lens group. Among them, the following conditions can also be satisfied: 3.0 < Dra1r9 / CT1 < 12.0. Among them, the following conditions can also be satisfied: 3.38 ≤ Dra1r9 / CT1 ≤ 9.51. Please refer to Fig.36 which is a schematic diagram showing the parameter Dra1r9 in the first embodiment of the present disclosure. Please refer to Fig.37 which is a schematic diagram showing the parameter Dra1r9 in the ninth embodiment of the present disclosure.

[0160] The thickness of the second lens group on the optical axis is CT2, and the interval distance between the front lens and the rear lens on the optical axis is Tab, which can satisfy the following conditions: 1.80 < 0.1×CT2 / Tab. Thus, it can be ensured that the second lens group has a certain central thickness, which helps to strengthen the mechanical strength of the second lens group and at the same time reduces the sensitivity of the imaging lens group. Among them, the following conditions can also be satisfied: 2.00 < 0.1×CT2 / Tab. Among them, the following conditions can also be satisfied: 3.24 ≤ 0.1×CT2 / Tab ≤ 65.72.

[0161] The focal length of the imaging lens group is f, and the focal length of the first lens group is fG1, which can satisfy the following conditions: 0.10 < f / fG1 < 1.60. Thus, the refractive power of the front section of the imaging lens group can be controlled, which helps to form a telephoto lens structure for the optical path. Among them, the following conditions can also be satisfied: 0.10 < f / fG1 < 1.40.

[0162] The radius of curvature of the image side surface of the first lens group is R2, and the radius of curvature of the image side surface of the front lens is Ra2, which can satisfy the following conditions: 0.80 < |R2 / Ra2| < 15.00. Thus, the surface shapes of the image side surface of the first lens group and the image side surface of the front lens can be adjusted, which helps to improve the light condensing quality of the imaging light. Among them, the following conditions can also be satisfied: 0.80 < |R2 / Ra2| < 8.50.

[0163] The radius of curvature of the image-side surface of the second lens group is R4, and the radius of curvature of the image-side surface of the third lens group is R6. Taking the focal length of the imaging lens group as f, the following conditions can be satisfied: 2.50 < |R4| / f + |R6| / f. By controlling the radius of curvature of the image-side surface of the second lens group and the radius of curvature of the image-side surface of the third lens group, spherical aberration and coma can be improved, and the image quality can be enhanced. Among them, the following conditions can also be satisfied: 2.80 < |R4| / f + |R6| / f.

[0164] The interval distance between the fifth lens group and the sixth lens group on the optical axis is T56, the distance from the object-side surface of the first lens group to the imaging surface on the optical axis is TL, and the thickness of the sixth lens group on the optical axis is CT6. Taking the maximum imaging height of the imaging lens group (which can be half of the total diagonal length of the effective sensing area of the electronic photosensitive element) as ImgH, the following conditions can be satisfied: 3.30 < T56 / CT6 + TL / ImgH < 10.50. Thereby, it helps to shorten the back focal length and avoid the overall length of the imaging lens group from being too long.

[0165] The Abbe number of the first lens group is V1, the Abbe number of the second lens group is V2, and the Abbe number of the front lens is Va. The following conditions can be satisfied: 1.00 < (V1 + V2) / Va < 3.80. Thereby, the distribution of lens materials can be adjusted and the chromatic aberration generated by the imaging lens group can be corrected, preventing the occurrence of image overlap and helping to improve the imaging quality. Among them, the following conditions can also be satisfied: 1.95 < (V1 + V2) / Va < 3.80.

[0166] The radius of curvature of the object-side surface of the second lens group is R3, and the radius of curvature of the image-side surface of the front lens is Ra2. The following conditions can be satisfied: 0.60 < |R3 / Ra2| < 20.00. By controlling the surface shapes of the object-side surface of the second lens group and the image-side surface of the front lens, the peripheral light path direction can be controlled, effectively converging light and increasing the image brightness. Among them, the following conditions can also be satisfied: 0.80 < |R3 / Ra2| < 15.00.

[0167] Taking the focal length of the imaging lens group as f, the combined focal length of the first lens group and the second lens group as f12, and the combined focal length of the second lens group and the third lens group as f23, the following conditions can be satisfied: 0.00 < f / f12 + f / f23. Thereby, the light path direction at the front end of the imaging lens group can be regulated, which helps to adjust the viewing angle and correct the aberration. Among them, the following conditions can also be satisfied: 0.05 < f / f12 + f / f23 < 3.50.

[0168] The distance parallel to the optical axis between the position of the maximum effective radius of the object side surface of the front lens and the position of the maximum effective radius of the image side surface of the front lens is ETa, and the distance parallel to the optical axis between the position of the maximum effective radius of the object side surface of the fifth lens group and the position of the maximum effective radius of the image side surface of the fifth lens group is ET5, which can satisfy the following conditions: 0.80 < ETa / ET5 < 3.50. Thereby, it can cooperate with the central field of view optical path, effectively control the edge optical path direction, correct astigmatism and reduce distortion at the same time. Among them, the following conditions can also be satisfied: 0.80 < ETa / ET5 < 3.10. Please refer to Fig.38 , which is a schematic diagram showing the parameters ETa and ET5 in the first embodiment of the present disclosure.

[0169] The maximum effective radius of the object side surface of the first lens group is Y1R1, and the maximum effective radius of the image side surface of the sixth lens group is Y6R2, which can satisfy the following conditions: 0.50 < Y6R2 / Y1R1 < 1.60. Thereby, it helps to standardize the imaging size and reduce the angle of light incident on the imaging surface, effectively improving the relative illuminance of the image periphery. Please refer to Fig.38 , which is a schematic diagram showing the parameters Y1R1 and Y6R2 in the first embodiment of the present disclosure.

[0170] The maximum absolute value of the distortion aberration of the imaging lens group on the imaging surface within the maximum field of view is |Dist|max, which can satisfy the following conditions: |Dist|max < 5.00%. Thereby, the imaging lens group can be controlled within a low distortion range, effectively improving the image quality. Among them, the following conditions can also be satisfied: |Dist|max < 3.50%.

[0171] The distance of the first lens group on the optical axis is DG1, and the distance of the second lens group on the optical axis is DG2, which can satisfy the following conditions: 0.20 < DG1 / DG2 < 0.65. Thereby, it helps to adjust the length ratio between the lens groups to achieve a balance relationship among the overall field of view, image height and total length of the imaging lens group. Among them, the following conditions can also be satisfied: 0.20 < DG1 / DG2 < 0.60. Please refer to Fig.36 , which is a schematic diagram showing the parameters DG1 and DG2 in the first embodiment of the present disclosure. Please refer to Fig.37 , which is a schematic diagram showing the parameters DG1 and DG2 in the ninth embodiment of the present disclosure.

[0172] The radius of curvature of the object side surface of the first lens group is R1, and the radius of curvature of the image side surface of the first lens group is R2, which can satisfy the following conditions: 0.25 < |R1 / R2|. Thereby, the surface shape and refractive power of the first lens group can be adjusted, and then the initial traveling direction of the optical path can be adjusted to avoid generating too much aberration. Among them, the following conditions can also be satisfied: 0.45 < |R1 / R2|.

[0173] The maximum imaging height of the imaging lens group is ImgH, the distance from the aperture to the image-side surface of the sixth lens group on the optical axis is SD, and the distance from the object-side surface of the first lens group to the imaging surface on the optical axis is TL. The following conditions can be satisfied: 4.30 < 10×(ImgH / SD + ImgH / TL) < 8.90. Thus, the position of the aperture and the total length of the imaging lens group can be assisted and limited by the size of the imaging surface, which helps to achieve a balance between image brightness and overall volume.

[0174] The focal length of the imaging lens group is f, the focal length of the first lens group is fG1, and the focal length of the second lens group is fG2. The following conditions can be satisfied: 0.25 < |f / fG1| + |f / fG2|. Thus, it can be ensured that the imaging lens group has a certain refractive power, which helps to converge light rays and shorten the total length. Among them, the following conditions can also be satisfied: 0.40 < |f / fG1| + |f / fG2| < 2.65.

[0175] The spacing distance between the front lens and the rear lens on the optical axis is Tab. The following conditions can be satisfied: 0.001 mm < Tab < 0.020 mm. Thus, it can be ensured that the bonding surface between the two lenses maintains a more suitable spacing, avoiding the bonding glue from not being evenly dispersed to the periphery of the lens, and allowing a certain manufacturing tolerance to improve the production qualification rate.

[0176] The focal length of the imaging lens group is f, the focal length of the first lens group is f1, and the focal length of the second lens group is f2. The following conditions can be satisfied: -0.70 < f / f1 + f / f2 < 1.15. Thus, it can be avoided that the refractive power of the front section of the imaging lens group is too strong, which helps to adjust in cooperation with the spatial configuration of the middle section of the imaging lens group and reduce the generation of aberrations. Among them, the following conditions can also be satisfied: -0.60 < f / f1 + f / f2 < 1.00.

[0177] The radius of curvature of the object-side surface of the first lens group is R1, the radius of curvature of the object-side surface of the fifth lens group is R9, and the radius of curvature of the image-side surface of the sixth lens group is R12. The focal length of the imaging lens group is f. The following conditions can be satisfied: |R1| / f + |R9| / f + |R12| / f < 25.0. Thus, the surface shapes of the object-side surface of the first lens group, the object-side surface of the fifth lens group, and the image-side surface of the sixth lens group can be designed to effectively improve the image curvature and correct the spherical aberration. Among them, the following conditions can also be satisfied: |R1| / f + |R9| / f + |R12| / f < 20.0.

[0178] The curvature radius of the image side surface of the front lens is Ra2, the curvature radius of the object side surface of the rear lens is Rb1, and the focal length of the imaging lens group is f, which can meet the following conditions: |Ra2| / f+|Rb1| / f<3.30. In this way, the curvature degree of the central curvature radius of the image side surface of the front lens group and the object side surface of the rear lens can be limited, which helps to correct the astigmatism of the imaging lens group and reduce the stray light in the optical lens. Among them, the following conditions can also be met: 0.45|Ra2| / f+|Rb1| / f<3.30.

[0179] The distance from the aperture to the object side surface of the fifth lens group on the optical axis is Dsr9, and the distance from the aperture to the image side surface of the fifth lens group on the optical axis is Dsr10, which can meet the following condition: Dsr9 / Dsr10<0.98. In this way, the aperture position can be standardized to ensure that the imaging lens group has sufficient light intake and improve the image illumination.

[0180] The maximum imaging height of the imaging lens group is ImgH, the maximum effective radius of the object side surface of the first lens group is Y1R1, and the maximum effective radius of the object side surface of the second lens group is Y2R1, which can meet the following conditions: 0.65<2×ImgH / (Y1R1+Y2R1)<2.00. In this way, the optical effective radius height of the first lens group and the second lens group can be designed to help increase the imaging surface and improve the imaging quality. Among them, the following conditions can also be met: 0.65<2×ImgH / (Y1R1+Y2R1)<1.70. Please refer to Fig.38 , is a schematic diagram illustrating the parameter Y2R1 according to the first embodiment of the present disclosure.

[0181] The various technical features of the imaging lens assembly disclosed in the present disclosure can be configured in combination to achieve corresponding effects.

[0182] In the imaging lens group disclosed in the present disclosure, the material of the lens can be glass or plastic. If the material of the lens is glass, the freedom of the configuration of the refractive power of the imaging lens group can be increased, and the influence of the external environmental temperature change on the imaging can be reduced, and the glass lens can be made by grinding or molding. If the lens material is plastic, the production cost can be effectively reduced. In addition, a spherical surface (SPH) or an aspherical surface (ASP) can be set on the mirror surface, wherein the spherical lens can reduce the manufacturing difficulty, and if the aspherical surface is set on the mirror surface, more control variables can be obtained to reduce aberrations, reduce the number of lenses, and effectively reduce the total length of the imaging lens group disclosed in the present disclosure. Furthermore, the aspherical surface can be made by plastic injection molding or molding glass lenses.

[0183] In the imaging lens assembly disclosed in the present disclosure, if the lens surface is an aspherical surface, it means that the entire or a part of the optically effective area of ​​the lens surface is an aspherical surface.

[0184] In the imaging lens assembly disclosed in the present disclosure, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects to change the lens's transmittance for light in a specific wavelength band, thereby reducing stray light and color deviation. For example, the additive can have the function of filtering out light in the 600-nanometer to 800-nanometer wavelength band in the system to help reduce excess red light or infrared light; or it can filter out light in the 350-nanometer to 450-nanometer wavelength band to reduce excess blue light or ultraviolet light. Therefore, the additive can prevent light in a specific wavelength band from interfering with imaging. In addition, the additive can be evenly mixed in a plastic material and made into a lens using injection molding technology. In addition, the additive can also be configured as a coating on the surface of the lens to provide the above-mentioned effects.

[0185] In the imaging lens set disclosed in the present disclosure, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface may be located at the near optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface may be located at the near optical axis of the lens surface. If the refractive power or focal length of the lens does not define its regional position, it means that the refractive power or focal length of the lens may be the refractive power or focal length of the lens at the near optical axis.

[0186] In the imaging lens assembly disclosed in the present invention, the inflection point of the lens surface refers to the intersection point where the curvature of the lens surface changes from positive to negative.

[0187] In the imaging lens assembly disclosed in the present disclosure, the imaging surface of the imaging lens assembly can be a plane or a curved surface with any curvature, especially a curved surface with a concave surface facing the object side, depending on the corresponding electronic photosensitive element.

[0188] In the imaging lens assembly disclosed in the present disclosure, one or more imaging correction elements (field flattening elements, etc.) can be selectively arranged between the lens closest to the imaging surface on the imaging optical path and the imaging surface to achieve the effect of correcting the image (image bending, etc.). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, surface 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 arrange a thin plano-concave element with a concave surface toward the object side close to the imaging surface.

[0189] In the imaging lens assembly disclosed in 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 between the object and the imaging surface on the imaging optical path, wherein the prism surface or the reflector surface can be a plane, a spherical surface, an aspherical surface or a free-form surface, etc., to provide a more flexible spatial configuration of the imaging lens assembly, so that the electronic device is not restricted by the total optical length of the imaging lens assembly. For further explanation, please refer to Fig.39 and Fig.40 ,in Fig.39 is a schematic diagram showing a configuration relationship of an optical path turning element in an imaging lens assembly according to the present disclosure, and Fig.40 FIG. 2 is a schematic diagram showing another configuration relationship of an optical path turning element in an imaging lens assembly according to the present disclosure. Fig.39 and Fig.40 As shown, the imaging lens group can be along the optical path from the object (not shown) to the imaging surface IMG, and has a first optical axis OA1, an optical path turning element LF and a second optical axis OA2 in sequence, wherein the optical path turning element LF can be as shown Fig.39 As shown, it is arranged between the object and the lens group LG of the imaging lens group, or as shown Fig.40 The figure shows the lens group LG disposed between the imaging lens group and the imaging surface IMG. Fig.41 , is a schematic diagram illustrating a configuration relationship of two optical path turning elements in an imaging lens assembly according to the present disclosure, such as Fig.41 As shown, the imaging lens group can also be arranged along the optical path from the object (not shown) to the imaging surface IMG, and has a first optical axis OA1, a first optical path turning element LF1, a second optical axis OA2, a second optical path turning element LF2 and a third optical axis OA3 in sequence, wherein the first optical path turning element LF1 is arranged between the object and the lens group LG of the imaging lens group, the second optical path turning element LF2 is arranged between the lens group LG of the imaging lens group and the imaging surface IMG, and the traveling direction of the light on the first optical axis OA1 can be as follows: Fig.41 The direction shown is the same as the direction of the light traveling along the third optical axis OA3. The imaging lens assembly can also be selectively configured with more than three optical path turning elements, and the present disclosure is not limited to the type, quantity and position of the optical path turning elements disclosed in the drawings.

[0190] In the imaging lens assembly disclosed in the present disclosure, at least one aperture may be provided, which may be located before the first lens assembly, between each lens, or after the last lens assembly. The aperture may be a glare stop or a field stop, etc., which may be used to reduce stray light and help improve image quality.

[0191] In the imaging lens assembly disclosed in the present disclosure, the aperture can be configured as a front aperture or a center aperture. The front aperture means that the aperture is set between the object and the first lens assembly, and the center aperture means that the aperture is set between the first lens assembly and the imaging plane. If the aperture is a front aperture, the exit pupil can be at a longer distance from the imaging plane, making it have a telecentric effect and increasing the efficiency of the CCD or CMOS of the electronic photosensitive element in receiving the image; if it is a center aperture, it helps to expand the field of view of the imaging lens assembly.

[0192] 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.

[0193] The present disclosure may appropriately set one or more optical elements to limit the form of light passing through the imaging lens group. The optical element may be a filter, a polarizer, etc., but the present disclosure is not limited thereto. In addition, the optical element may be a single-piece element, a composite component, or presented in the form of a film, etc., but the present disclosure is not limited thereto. The optical element may be placed at the object end, the image end, or between the lenses of the imaging lens group to control the passage of a specific form of light, thereby meeting the application requirements.

[0194] The imaging lens assembly disclosed in the present disclosure may include at least one optical lens, optical element or carrier, at least one surface of which has a low-reflection layer, and the low-reflection layer can effectively reduce the stray light generated by the reflection of light at the interface. The low-reflection layer can be arranged on the non-effective area of ​​the object side surface or the image side surface of the optical lens, or the connecting surface between the object side surface and the image side surface; the optical element can be a shading element, an annular spacer element, a lens barrel element, a flat glass (Cover glass), a blue glass (Blue glass), a filter element (Filter, Color filter), an optical path turning element (reflection element), a prism or a mirror, etc.; the carrier can be a lens assembly lens mount, a micro lens (Micro lens) arranged on a photosensitive element, the periphery of a photosensitive element substrate, or a glass sheet used to protect a photosensitive element, etc.

[0195] In the imaging lens assembly disclosed in the present invention, the object side and the image side are determined according to the direction of the optical axis, and the data on the optical axis are calculated along the optical axis. If the optical axis is turned through an optical path turning element, the data on the optical axis is also calculated along the optical axis.

[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 to Figure 2 ,in Figure 1 A schematic diagram of an imaging device according to a first embodiment of the present disclosure is shown. Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment. Figure 1 It can be seen that the imaging device 1 includes an imaging lens group (not labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, a fifth lens group E5, a sixth lens group E6, a filter element (Filter) E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0199] The first lens group E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0200] The second lens group E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0201] The third lens group E3 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0202] The front lens Ea has negative refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are spherical.

[0203] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0204] The fifth lens group E5 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0205] The sixth lens group E6 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are aspherical.

[0206] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0207] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:

[0208]

[0209] 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;

[0210] Y: the vertical distance between the point on the aspheric curve and the optical axis;

[0211] R: radius of curvature;

[0212] k: cone coefficient; and

[0213] Ai: i-th order aspheric coefficient.

[0214] In the imaging lens group of the first embodiment, the focal length of the imaging lens group is f, the aperture value (F-number) of the imaging lens group is Fno, and half of the maximum viewing angle in the imaging lens group is HFOV, and its values ​​are as follows: f=17.78 millimeters (mm), Fno=2.50, HFOV=15.9 degrees (deg.).

[0215] The maximum viewing angle in the imaging lens group is FOV, which satisfies the following condition: FOV=31.8 degrees.

[0216] The distance on the optical axis from the image-side surface of the front lens Ea to the object-side surface of the fifth lens group E5 is Dra2r9, and the thickness of the fifth lens group E5 on the optical axis is CT5, which satisfies the following condition: Dra2r9 / CT5=1.22.

[0217] The distance between the first lens group G1 on the optical axis is DG1, and the distance between the front lens group G2f on the optical axis is DG2f, which satisfies the following condition: DG1 / DG2f=0.60. In this embodiment, DG1 can also be understood as the distance between the object side surface of the first lens group E1 and the image side surface of the third lens group E3 on the optical axis. In this embodiment, DG2f can also be understood as the distance between the fourth lens group E4 on the optical axis.

[0218] The distance between the object side surface of the first lens group E1 and the imaging surface IMG on the optical axis is TL, and the entrance pupil diameter of the imaging lens group is EPD, which satisfies the following condition: TL / EPD=3.47.

[0219] The focal length of the imaging lens group is f, the combined focal length of the first lens group E1 and the second lens group E2 is f12, the combined focal length of the second lens group E2 and the third lens group E3 is f23, and the focal length of the front lens group G2f is fG2f, which satisfies the following condition: f / f23-|f / f12|+f / fG2f=0.50. In this embodiment, fG2f can also be understood as the focal length of the fourth lens group E4.

[0220] The distance between the first lens group E1 and the second lens group E2 on the optical axis is T12, and the thickness of the front lens Ea on the optical axis is CTa, which satisfies the following condition: 10×T12 / CTa=0.25. In this embodiment, the distance between two adjacent lenses (lens groups) on the optical axis refers to the distance between two adjacent mirror surfaces of the two adjacent lenses (lens groups) on the optical axis.

[0221] The focal length of the imaging lens group is f, and the focal length of the first lens group G1 is fG1, which satisfies the following condition: f / fG1=1.02.

[0222] The curvature radius of the image-side surface of the first lens group E1 is R2, and the curvature radius of the image-side surface of the front lens Ea is Ra2, which satisfy the following condition: |R2 / Ra2|=4.05.

[0223] The curvature radius of the image side surface of the second lens group E2 is R4, the curvature radius of the image side surface of the third lens group E3 is R6, and the focal length of the imaging lens group is f, which satisfies the following condition: |R4| / f+|R6| / f=5.17.

[0224] The interval between the fifth lens group E5 and the sixth lens group E6 on the optical axis is T56, the distance between the object side surface of the first lens group E1 and the imaging surface IMG on the optical axis is TL, the thickness of the sixth lens group E6 on the optical axis is CT6, and the maximum imaging height of the imaging lens group is ImgH, which satisfies the following condition: T56 / CT6+TL / ImgH=5.03.

[0225] The Abbe number of the first lens group E1 is V1, the Abbe number of the second lens group E2 is V2, and the Abbe number of the front lens Ea is Va, which satisfies the following condition: (V1+V2) / Va=3.29.

[0226] The curvature radius of the object-side surface of the second lens group E2 is R3, and the curvature radius of the image-side surface of the front lens Ea is Ra2, which satisfy the following condition: |R3 / Ra2|=2.24.

[0227] The focal length of the imaging lens group is f, the combined focal length of the first lens group E1 and the second lens group E2 is f12, and the combined focal length of the second lens group E2 and the third lens group E3 is f23, which satisfies the following condition: f / f12+f / f23=1.72.

[0228] The distance between the maximum effective radius position of the object side surface of the front lens Ea and the maximum effective radius position of the image side surface of the front lens Ea parallel to the optical axis is ETa, and the distance between the maximum effective radius position of the object side surface of the fifth lens group E5 and the maximum effective radius position of the image side surface of the fifth lens group E5 parallel to the optical axis is ET5, which satisfies the following condition: ETa / ET5=1.13.

[0229] The maximum effective radius of the object side surface of the first lens group E1 is Y1R1, and the maximum effective radius of the image side surface of the sixth lens group E6 is Y6R2, which satisfies the following condition: Y6R2 / Y1R1=0.90.

[0230] The maximum absolute value of the distortion aberration of the imaging lens assembly on the imaging surface IMG within the maximum field of view is |Dist|max, which satisfies the following condition: |Dist|max=2.17%.

[0231] The curvature radius of the most object side surface of the fourth lens group E4 is RU4f, and the curvature radius of the most image side surface of the fourth lens group E4 is RU4r, which satisfies the following condition: RU4f / RU4r=1.07. In this embodiment, the most object side surface of the fourth lens group E4 is the object side surface of the front lens Ea, and the most image side surface of the fourth lens group E4 is the image side surface of the rear lens Eb.

[0232] The focal length of the second lens group E2 is f2, the focal length of the third lens group E3 is f3, and the focal length of the fifth lens group E5 is f5, which satisfies the following condition: |f3+f5| / |f2|=6.81.

[0233] The distance between the first lens group G1 and the second lens group G2 on the optical axis is DG1 and DG2, which satisfy the following condition: DG1 / DG2=0.27. In this embodiment, DG2 can also be understood as the distance between the object side surface of the front lens Ea and the image side surface of the sixth lens group E6 on the optical axis.

[0234] The curvature radius of the object-side surface of the first lens group E1 is R1, and the curvature radius of the image-side surface of the first lens group E1 is R2, which satisfy the following condition: |R1 / R2|=0.65.

[0235] The maximum imaging height of the imaging lens group is ImgH, the distance from the aperture ST to the image-side surface of the sixth lens group E6 on the optical axis is SD, and the distance from the object-side surface of the first lens group E1 to the imaging plane IMG on the optical axis is TL, which satisfies the following condition: 10×(ImgH / SD+ImgH / TL)=5.2.

[0236] The focal length of the imaging lens group is f, the focal length of the first lens group G1 is fG1, and the focal length of the second lens group G2 is fG2, which satisfies the following condition: |f / fG1|+|f / fG2|=1.10.

[0237] The distance between the front lens Ea and the rear lens Eb on the optical axis is Tab, which satisfies the following condition: Tab = 0.050 mm. In this embodiment, Tab can also be understood as the distance between the bonding surfaces of the fourth lens group E4 on the optical axis.

[0238] The distance on the optical axis from the object side surface of the front lens Ea to the object side surface of the fifth lens group E5 is Dra1r9, and the thickness of the first lens group E1 on the optical axis is CT1, which satisfies the following condition: Dra1r9 / CT1=8.72.

[0239] The thickness of the second lens group E2 on the optical axis is CT2, and the distance between the front lens Ea and the rear lens Eb on the optical axis is Tab, which satisfies the following condition: 0.1×CT2 / Tab=3.24.

[0240] The focal length of the imaging lens group is f, the focal length of the first lens group E1 is f1, and the focal length of the second lens group E2 is f2, which satisfies the following condition: f / f1+f / f2=1.05.

[0241] The curvature radius of the object side surface of the first lens group E1 is R1, the curvature radius of the object side surface of the fifth lens group E5 is R9, the curvature radius of the image side surface of the sixth lens group E6 is R12, and the focal length of the imaging lens group is f, which satisfies the following condition: |R1| / f+|R9| / f+|R12| / f=3.06.

[0242] The curvature radius of the image-side surface of the front lens Ea is Ra2, the curvature radius of the object-side surface of the rear lens Eb is Rb1, and the focal length of the imaging lens group is f, which satisfies the following condition: |Ra2| / f+|Rb1| / f=0.67.

[0243] The distance from the aperture ST to the object-side surface of the fifth lens group E5 on the optical axis is Dsr9, and the distance from the aperture ST to the image-side surface of the fifth lens group E5 on the optical axis is Dsr10, which satisfies the following condition: Dsr9 / Dsr10=0.68.

[0244] The maximum imaging height of the imaging lens group is ImgH, the maximum effective radius of the object side surface of the first lens group E1 is Y1R1, and the maximum effective radius of the object side surface of the second lens group E2 is Y2R1, which satisfies the following condition: 2×ImgH / (Y1R1+Y2R1)=1.01.

[0245] Please refer to Table 1A and Table 1B below.

[0246]

[0247]

[0248] Table 1A Figure 1 The first embodiment has detailed structural data, wherein the units of the radius of curvature, thickness and focal length are in millimeters (mm), and surfaces 0 to 18 represent the surfaces from the object side to the image side in sequence. Table 1B shows the aspheric surface data of the first embodiment, wherein k is the cone coefficient in the aspheric curve equation, and A4 to A20 represent the 4th to 20th 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.

[0249] <Second Embodiment>

[0250] Please refer to Figure 3 to Figure 4 ,in Figure 3 A schematic diagram of an imaging device according to a second embodiment of the present disclosure is shown. Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Figure 3 It can be seen that the imaging device 2 includes an imaging lens group (not separately labeled) and an electronic photosensitive element IS. The imaging lens group includes an aperture ST, a first lens group E1, a second lens group E2, a third lens group E3, a fourth lens group E4, a stop S1, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0251] The first lens group E1 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0252] The second lens group E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0253] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0254] The front lens Ea has negative refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are spherical.

[0255] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0256] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0257] The sixth lens group E6 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has an inflection point.

[0258] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0259] Please refer to Table 2A and Table 2B below.

[0260]

[0261]

[0262] In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in Table 2C are the same as those in the first embodiment and are not repeated here.

[0263]

[0264] <Third Embodiment>

[0265] Please refer to Figures 5 and 6 ,in Figure 5 A schematic diagram of an imaging device according to a third embodiment of the present disclosure is shown. Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment. Figure 5It can be seen that the imaging device 3 includes an imaging lens group (not labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, a stop S1, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

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

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

[0268] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0269] The front lens Ea has negative refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are spherical.

[0270] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is concave at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0271] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, and its object-side surface has an inflection point.

[0272] The sixth lens group E6 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, both surfaces are aspherical, its object-side surface has one inflection point, and its image-side surface has two inflection points.

[0273] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0274] Please refer to Table 3A and Table 3B below.

[0275]

[0276]

[0277]

[0278] In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in Table 3C are the same as those in the first embodiment and are not repeated here.

[0279]

[0280] <Fourth Embodiment>

[0281] Please refer to Figures 7 and 8 ,in Figure 7 A schematic diagram of an imaging device according to a fourth embodiment of the present disclosure is shown. Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment. Figure 7It can be seen that the imaging device 4 includes an imaging lens group (not separately labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, a fifth lens group E5, a stop S1, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. The first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. The electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two.

[0282] The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0283] The first lens group E1 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0284] The second lens group E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are spherical, and its object-side surface is bonded to the image-side surface of the first lens group E1.

[0285] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are aspherical.

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

[0287] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0288] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, both surfaces are aspherical, and its object-side surface has an inflection point.

[0289] The sixth lens group E6 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0290] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0291] Please refer to Table 4A and Table 4B below.

[0292]

[0293]

[0294]

[0295] In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in Table 4C are the same as those in the first embodiment and are not repeated here.

[0296]

[0297]

[0298] <Fifth Embodiment>

[0299] Please refer to Figures 9 and 10 ,in Fig. 9 A schematic diagram of an imaging device according to a fifth embodiment of the present disclosure is shown. Fig.10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment. Fig. 9It can be seen that the imaging device 5 includes an imaging lens group (not separately labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, a stop S1, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0300] The first lens group E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0301] The second lens group E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is flat near the optical axis, and its object-side surface is spherical.

[0302] The third lens group E3 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0303] The front lens Ea has negative refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are spherical.

[0304] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0305] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0306] The sixth lens group E6 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0307] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0308] Please refer to the following Table 5A. Since the lens surfaces of this embodiment are all spherical, there is no Table 5B listing the aspherical coefficients.

[0309]

[0310]

[0311] The definitions described in Table 5C are the same as those in the first embodiment and are not elaborated here.

[0312]

[0313] <Sixth Embodiment>

[0314] Please refer to Figure 11 to Figure 12 ,in Fig.11 A schematic diagram of an imaging device according to a sixth embodiment of the present disclosure is shown. Fig.12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment. Fig.11 It can be seen that the imaging device 6 includes an imaging lens group (not separately labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, an aperture ST, a third lens group E3, a fourth lens group E4, a stop S1, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0315] The first lens group E1 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0316] The second lens group E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0317] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0318] The front lens Ea has negative refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are spherical.

[0319] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0320] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0321] The sixth lens group E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has an inflection point, and its image-side surface has an inflection point.

[0322] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0323] Please refer to Table 6A and Table 6B below.

[0324]

[0325]

[0326]

[0327] In the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in Table 6C are the same as those in the first embodiment and are not repeated here.

[0328]

[0329]

[0330] <Seventh Embodiment>

[0331] Please refer to Figure 13 to Figure 14 ,in Fig.13 FIG. 1 is a schematic diagram of an imaging device according to a seventh embodiment of the present disclosure. Fig.14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment. Fig.13 It can be seen that the imaging device 7 includes an imaging lens group (not separately labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, a stop S1, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0332] The first lens group E1 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0333] The second lens group E2 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0334] The third lens group E3 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0335] The front lens Ea has negative refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are spherical.

[0336] The rear lens Eb has positive refractive power and is made of glass. Its object side surface is convex at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0337] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0338] The sixth lens group E6 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0339] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0340] Please refer to Table 7A below. Since all lens surfaces in this embodiment are spherical, Table 7B which lists aspherical coefficients is not included.

[0341]

[0342]

[0343] The definitions described in Table 7C are the same as those in the first embodiment and are not elaborated here.

[0344]

[0345] <Eighth Embodiment>

[0346] Please refer to Figure 15 to Figure 16 ,in Fig.15 FIG. 1 is a schematic diagram of an imaging device according to an eighth embodiment of the present disclosure. Fig.16 From left to right are the spherical aberration, astigmatism and distortion curves of the eighth embodiment. Fig.15It can be seen that the imaging device 8 includes an imaging lens group (not separately labeled) and an electronic photosensitive element IS. The imaging lens group includes a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, a stop S1, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fifth lens group E5, and the sixth lens group E6 are each a single lens, and the fourth lens group E4 is a cemented lens composed of two lenses. The fourth lens group E4 includes a front lens Ea and a rear lens Eb in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea and the rear lens Eb of the fourth lens group E4 belong to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. Among them, the electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is seven. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0347] The first lens group E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0348] The second lens group E2 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0349] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0350] The front lens Ea has positive refractive power and is made of glass. Its object-side surface is concave at the near optical axis, its image-side surface is convex at the near optical axis, and both surfaces are spherical.

[0351] The rear lens Eb has negative refractive power and is made of glass. Its object side surface is concave at the near optical axis, and its image side surface is convex at the near optical axis. Both surfaces are spherical, and its object side surface is bonded to the image side surface of the front lens Ea.

[0352] The fifth lens group E5 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both surfaces are spherical.

[0353] The sixth lens group E6 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0354] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0355] Please refer to the following Table 8A. Since the lens surfaces of this embodiment are all spherical, there is no Table 8B listing the aspherical coefficients.

[0356]

[0357]

[0358] The definitions described in Table 8C are the same as those in the first embodiment and are not elaborated here.

[0359]

[0360] <Ninth Embodiment>

[0361] Please refer to Figure 17 to Figure 18 ,in Fig.17 FIG. 1 is a schematic diagram of an imaging device 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 includes an imaging lens group (not labeled) and an electronic photosensitive element IS. The imaging lens group includes an aperture S1, a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, an aperture S2, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fourth lens group E4, the fifth lens group E5, and the sixth lens group E6 are each a single lens. The fourth lens group E4 includes a front lens Ea. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea of the fourth lens group E4 belongs to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. The electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is six. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0362] The first lens group E1 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis, its image side surface is concave near the optical axis, and both surfaces are aspherical.

[0363] The second lens group E2 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis. Both surfaces are aspherical. Its object side surface has an inflection point, and its image side surface has an inflection point.

[0364] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0365] The front lens Ea has negative refractive power and is made of plastic. Its object-side surface is convex at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are aspherical.

[0366] The fifth lens group E5 has positive refractive power and is made of plastic. Its object side surface is concave near the optical axis, and its image side surface is convex near the optical axis. Both surfaces are aspherical, and its image side surface has an inflection point.

[0367] The sixth lens group E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has an inflection point, and its image-side surface has an inflection point.

[0368] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0369] Please refer to Table 9A and Table 9B below.

[0370]

[0371]

[0372]

[0373] 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 described in Table 9C are the same as those in the first embodiment and are not repeated here.

[0374]

[0375] <Tenth Embodiment>

[0376] Please refer to Figure 19 to Figure 20 ,in Fig.19FIG. 1 is a schematic diagram of an imaging device 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 imaging device 10 includes an imaging lens group (not labeled) and an electronic photosensitive element IS. The imaging lens group includes an aperture S1, a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, an aperture S2, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fourth lens group E4, the fifth lens group E5, and the sixth lens group E6 are each a single lens. The fourth lens group E4 includes a front lens Ea. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea of the fourth lens group E4 belongs to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. The electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is six. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0377] The first lens group E1 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis, its image side surface is concave near the optical axis, and both surfaces are aspherical.

[0378] The second lens group E2 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis. Both surfaces are aspherical. Its object side surface has an inflection point, and its image side surface has an inflection point.

[0379] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0380] The front lens Ea has negative refractive power and is made of plastic. Its object-side surface is convex at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are aspherical.

[0381] The fifth lens group E5 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are aspherical.

[0382] The sixth lens group E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has an inflection point, and its image-side surface has an inflection point.

[0383] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0384] Please refer to Table 10A and Table 10B below.

[0385]

[0386]

[0387]

[0388] 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 described in Table 10C are the same as those in the first embodiment and are not repeated here.

[0389]

[0390]

[0391] <Eleventh Embodiment>

[0392] Please refer to Figure 21 to Figure 22 ,in Fig.21 FIG. 1 is a schematic diagram of an imaging device according to an eleventh embodiment of the present disclosure. Fig. 22 From left to right are the spherical aberration, astigmatism and distortion curves of the eleventh embodiment. Fig.21It can be seen that the imaging device 11 includes an imaging lens group (not labeled) and an electronic photosensitive element IS. The imaging lens group includes an aperture S1, a first lens group E1, a second lens group E2, a third lens group E3, an aperture ST, a fourth lens group E4, an aperture S2, a fifth lens group E5, a sixth lens group E6, a filter element E7 and an imaging surface IMG in order from the object side to the image side along the optical path. Among them, the first lens group E1, the second lens group E2, the third lens group E3, the fourth lens group E4, the fifth lens group E5, and the sixth lens group E6 are each a single lens. The fourth lens group E4 includes a front lens Ea. Among them, the first lens group E1, the second lens group E2 and the third lens group E3 belong to the first lens group G1, the front lens Ea of the fourth lens group E4 belongs to the front lens group G2f of the second lens group G2, and the fifth lens group E5 and the sixth lens group E6 belong to the rear lens group G2r of the second lens group G2. The electronic photosensitive element IS is arranged on the imaging surface IMG. The imaging lens group includes two lens groups (G1, G2), and the two lens groups include six lens groups (E1, E2, E3, E4, E5, E6). The total number of lens groups of the imaging lens group is two. The total number of lens groups of the imaging lens group is six. The total number of lenses of the imaging lens group is six. There are no other interpolated lenses between the lenses, and the lenses do not move relative to each other.

[0393] The first lens group E1 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis, its image side surface is concave near the optical axis, and both surfaces are aspherical.

[0394] The second lens group E2 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis, and its image side surface is concave near the optical axis. Both surfaces are aspherical. Its object side surface has an inflection point, and its image side surface has an inflection point.

[0395] The third lens group E3 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and both surfaces are spherical.

[0396] The front lens Ea has negative refractive power and is made of plastic. Its object-side surface is convex at the near optical axis, its image-side surface is concave at the near optical axis, and both surfaces are aspherical.

[0397] The fifth lens group 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 convex near the optical axis. Both surfaces are aspherical, and its image side surface has an inflection point.

[0398] The sixth lens group E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has an inflection point, and its image-side surface has an inflection point.

[0399] The filter element E7 is made of glass and is disposed between the sixth lens group E6 and the imaging surface IMG, and does not affect the focal length of the imaging lens group.

[0400] Please refer to Table 11A and Table 11B below.

[0401]

[0402]

[0403]

[0404] In the eleventh embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions described in Table 11C are the same as those in the first embodiment and are not repeated here.

[0405]

[0406]

[0407] <Twelfth Embodiment>

[0408] Please refer to Fig.23 , is a three-dimensional schematic diagram of an imaging device according to the twelfth embodiment of the present disclosure. In this embodiment, the imaging device 100 is a camera module. The imaging device 100 includes an imaging lens 101, a driving device 102, an electronic photosensitive element 103, and an image stabilization module 104. The imaging lens 101 includes the imaging lens group of the first embodiment described above, a lens barrel (not separately labeled) for carrying the imaging lens group, and a support device (Holder Member, not separately labeled). The imaging lens 101 can also be changed to configure the imaging lens group of the other embodiments described above, and the present disclosure is not limited to this. The imaging device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, and finally forms an image on the electronic photosensitive element 103 and can be output as image data.

[0409] The driving device 102 may have an auto-focus function, and its driving method may use a driving system such as a voice coil motor (VCM), a micro electro-mechanical system (MEMS), a piezoelectric system (Piezoelectric), and a shape memory alloy (Shape Memory Alloy). The driving device 102 allows the imaging lens 101 to obtain a better imaging position, and can provide a clear image of the subject at different object distances. In addition, the imaging device 100 is equipped with an electronic photosensitive element 103 (such as CMOS, CCD) with good sensitivity and low noise, which is arranged on the imaging surface of the imaging lens group, which can truly present the good imaging quality of the imaging lens group.

[0410] The image stabilization module 104 is, for example, an accelerometer, a gyroscope, or a Hall Effect Sensor. The driving device 102 can be used in conjunction with the image stabilization module 104 to serve as an optical image stabilization (OIS) device, which can compensate for the blurry image caused by shaking at the moment of shooting by adjusting the changes in different axes of the imaging lens 101, or use the image compensation technology in the imaging software to provide an electronic image stabilization (EIS) function, thereby further improving the image quality of dynamic and low-light scene shooting.

[0411] <Thirteenth Embodiment>

[0412] Please refer to Figure 24 to Figure 25 ,in Fig.24 A three-dimensional schematic diagram of one side of an electronic device according to a thirteenth embodiment of the present disclosure is shown, and Fig.25 Draw Fig.24 A three-dimensional schematic diagram of the other side of the electronic device.

[0413] In this embodiment, the electronic device 200 is a smart phone. The electronic device 200 includes the imaging device 100, the imaging device 100a, the imaging device 100b, the imaging device 100c and the display module 201 of the twelfth embodiment. Fig.24 As shown, the imaging device 100, the imaging device 100a and the imaging device 100b are all disposed on the same side of the electronic device 200 and are all single-focus. Fig.25As shown, the image capturing device 100c and the display module 201 are both disposed on the other side of the electronic device 200. The image capturing device 100c can be used as a front lens to provide a selfie function, but the present disclosure is not limited thereto. Moreover, the image capturing device 100a, the image capturing device 100b and the image capturing device 100c can all include the image capturing lens group disclosed herein and can all have a structural configuration similar to that of the image capturing device 100. Specifically, the image capturing device 100a, the image capturing device 100b and the image capturing device 100c can each include an imaging lens, a driving device, an electronic photosensitive element and an image stabilization module. Among them, the imaging lenses of the image capturing device 100a, the image capturing device 100b and the image capturing device 100c can each include, for example, an optical lens group of the image capturing lens group disclosed herein, a lens barrel for carrying the optical lens group and a supporting device.

[0414] The imaging device 100 is a telephoto imaging device, the imaging device 100a is a wide-angle imaging device, the imaging device 100b is an ultra-wide-angle imaging device, and the imaging device 100c is a wide-angle imaging device. The imaging devices 100, 100a, and 100b of this embodiment have different viewing angles, so that the electronic device 200 can provide different magnifications to achieve an optical zoom shooting effect. In addition, Fig.25 As shown, the opening of the image capturing device 100c can be non-circular, and the lens barrel or lens in the image capturing device 100c can be cut at the outer diameter to have a cut edge to match the non-circular opening. In this way, the single-axis length of the image capturing device 100c can be further reduced, so as to reduce the volume of the lens, increase the area ratio of the display module 201 relative to the electronic device 200, and reduce the thickness of the electronic device 200, further achieving module miniaturization. The above-mentioned electronic device 200 is taken as an example including a plurality of image capturing devices 100, 100a, 100b, and 100c, but the number and configuration of the image capturing devices are not intended to limit the present disclosure.

[0415] <Fourteenth Embodiment>

[0416] Please refer to Figure 26 to Figure 28 ,in Fig.26 A three-dimensional schematic diagram of one side of an electronic device according to a fourteenth embodiment of the present disclosure is shown. Fig. 27 Draw Fig.26 A three-dimensional schematic diagram of the other side of the electronic device, and Fig.28 Draw Fig.26 A system block diagram of an electronic device.

[0417] In this embodiment, the electronic device 300 is a smart phone. The electronic device 300 includes the imaging device 100, the imaging device 100d, the imaging device 100e, the imaging device 100f, the imaging device 100g, the flash module 301, the focus auxiliary module 302, the image signal processor 303 (Image Signal Processor), the display module 304 and the image software processor 305 of the twelfth embodiment. The imaging device 100 and the imaging device 100d are both configured on the same side of the electronic device 300. The focus auxiliary module 302 can adopt a laser ranging or a time of flight (ToF) module, but the present disclosure is not limited thereto. The imaging device 100e, the imaging device 100f, the imaging device 100g and the display module 304 are all disposed on the other side of the electronic device 300, and the display module 304 can be a user interface, so that the imaging device 100e, the imaging device 100f and the imaging device 100g can be used as a front lens to provide a Selfie function, but the present disclosure is not limited thereto. In addition, the imaging device 100d, the imaging device 100e, the imaging device 100f and the imaging device 100g can all include the imaging lens group of the present disclosure and can all have a similar structural configuration to the imaging device 100. In detail, the imaging device 100d, the imaging device 100e, the imaging device 100f and the imaging device 100g can each include an imaging lens, a driving device, an electronic photosensitive element and an image stabilization module. The imaging lenses of the imaging devices 100d, 100e, 100f and 100g may each include an optical lens assembly such as the imaging lens assembly disclosed herein, a lens barrel for carrying the optical lens assembly and a supporting device.

[0418] The imaging device 100 is a telephoto imaging device, the imaging device 100d is a wide-angle imaging device, the imaging device 100e is a wide-angle imaging device, the imaging device 100f is an ultra-wide-angle imaging device, and the imaging device 100g is a time-of-flight ranging imaging device. The imaging device 100 and the imaging device 100d of this embodiment have different viewing angles, so that the electronic device 300 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 100g can obtain depth information of the image. The above-mentioned electronic device 300 is taken as an example including a plurality of imaging devices 100, 100d, 100e, 100f, and 100g, but the number and configuration of the imaging devices are not intended to limit the present disclosure.

[0419] When the user shoots the subject 306, the electronic device 300 uses the imaging device 100 or the imaging device 100d to focus and capture the image, activates the flash module 301 for fill light, and uses the object distance information of the subject 306 provided by the focus auxiliary module 302 for rapid focus, and the image signal processor 303 performs image optimization processing to further improve the image quality produced by the imaging lens group. The focus auxiliary module 302 can use an infrared or laser focus auxiliary system to achieve rapid focus. In addition, the electronic device 300 can also use the imaging device 100e, the imaging device 100f or the imaging device 100g to shoot. The display module 304 can use a touch screen to cooperate with the diverse functions of the image software processor 305 to shoot and process the image (or a physical shooting button can be used for shooting). The image processed by the image software processor 305 can be displayed on the display module 304.

[0420] <Fifteenth Embodiment>

[0421] Please refer to Fig.29 , is a three-dimensional schematic diagram illustrating one side of an electronic device according to the fifteenth embodiment of the present disclosure.

[0422] In the present embodiment, the electronic device 400 is a smart phone. The electronic device 400 includes the imaging device 100, the imaging device 100h, the imaging device 100i, the flash module 401, the focus auxiliary module, the image signal processor, the display module and the image software processor (not shown) of the twelfth embodiment. The imaging device 100, the imaging device 100h and the imaging device 100i are all arranged on the same side of the electronic device 400, and the display module is arranged on the other side of the electronic device 400. Moreover, the imaging device 100h and the imaging device 100i can both include the imaging lens assembly disclosed in the present invention and can both have a similar structural configuration as the imaging device 100, which will not be described in detail here.

[0423] The imaging device 100 is a telephoto imaging device, the imaging device 100h is a wide-angle imaging device, and the imaging device 100i is an ultra-wide-angle imaging device. The imaging devices 100, 100h, and 100i of the present embodiment have different viewing angles, so that the electronic device 400 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 100 is a telephoto imaging device with an optical path turning element configuration, so that the total length of the imaging device 100 is not limited by the thickness of the electronic device 400. The optical path turning element configuration of the imaging device 100 may, for example, have a configuration similar to Figure 39 to Figure 41 The structure of Figure 39 to Figure 41The electronic device 400 is described above as including a plurality of imaging devices 100, 100h, 100i, but the number and configuration of the imaging devices are not intended to limit the present disclosure. When a user photographs a subject, the electronic device 400 uses the imaging device 100, the imaging device 100h, or the imaging device 100i to focus light and capture an image, activates the flash module 401 for fill light, and performs subsequent processing in a manner similar to the aforementioned embodiment, which is not described here.

[0424] <Sixteenth Embodiment>

[0425] Please refer to Fig.30 , is a three-dimensional schematic diagram illustrating one side of an electronic device according to the sixteenth embodiment of the present disclosure.

[0426] In the present embodiment, the electronic device 500 is a smart phone. The electronic device 500 comprises the imaging device 100, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, the imaging device 100r, the imaging device 100s, the flash module 501, the focus assist module, the image signal processor, the display module and the image software processor (not shown) of the twelfth embodiment. The imaging device 100, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, the imaging device 100r and the imaging device 100s are all disposed on the same side of the electronic device 500, and the display module is disposed on the other side of the electronic device 500. Furthermore, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, the imaging device 100r and the imaging device 100s may all include the imaging lens assembly disclosed herein and may all have a structural configuration similar to that of the imaging device 100, which will not be described in detail herein.

[0427] The imaging device 100 is a telephoto imaging device, the imaging device 100j is a telephoto imaging device, the imaging device 100k is a wide-angle imaging device, the imaging device 100m is a wide-angle imaging device, the imaging device 100n is an ultra-wide-angle imaging device, the imaging device 100p is an ultra-wide-angle imaging device, the imaging device 100q is a telephoto imaging device, the imaging device 100r is a telephoto imaging device, and the imaging device 100s is a time-of-flight ranging imaging device. The imaging devices 100, 100j, 100k, 100m, 100n, 100p, 100q and 100r of this embodiment have different viewing angles, so that the electronic device 500 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 100 and the imaging device 100j may be telephoto imaging devices with an optical path deflection element. The optical path deflection element configuration of the imaging device 100 and the imaging device 100j may have a similar configuration. Figure 39 to Figure 41 The structure of Figure 39 to Figure 41 The description thereof will not be repeated here. In addition, the imaging device 100s can obtain depth information of the image. The above-mentioned electronic device 500 is taken as an example including a plurality of imaging devices 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r, and 100s, but the number and configuration of the imaging devices are not intended to limit the present disclosure. When the user photographs the subject, the electronic device 500 utilizes the imaging device 100, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, the imaging device 100r, or the imaging device 100s to focus light and capture an image, activates the flash module 501 for fill light, and performs subsequent processing in a manner similar to the aforementioned embodiment, which will not be repeated here.

[0428] <Seventeenth Embodiment>

[0429] Please refer to Figure 31 to Figure 33 ,in Fig.31 FIG. 1 is a three-dimensional schematic diagram of an electronic device according to a seventeenth embodiment of the present disclosure. Fig.32 Draw Fig.31 A schematic side view of an electronic device, and Fig.33 Draw Fig.31 A top view schematic diagram of an electronic device.

[0430] In this embodiment, the electronic device 600 is a mobile vehicle, such as a car. The electronic device 600 includes a plurality of imaging devices 601, and these imaging devices 601, for example, respectively include imaging lens groups disclosed herein, which can be applied to a panoramic driving assistance system, a driving recorder, and a reverse imaging device. The imaging device 601 can be a telephoto imaging device.

[0431] like Figure 31 to Figure 33 As shown, the image capturing device 601 can be set at the front, rear, side, rear mirror and interior of the car, etc., to capture images around the car, which helps to identify the road conditions outside the car, so as to realize the automatic assisted driving function. In addition, the images can be combined into a panoramic picture through the image software processor to provide the driver with images of the blind spots, so that the driver can control the situation around the car body, which is convenient for driving and parking.

[0432] like Fig.32 As shown, the image capturing device 601 can be disposed under the left and right rearview mirrors, respectively, to capture image information within the left and right lanes. Fig.33 As shown, the imaging device 601 can also be disposed, for example, below the left and right rearview mirrors and inside the front and rear windshields, so as to help the driver obtain information about the external space outside the cockpit, provide more viewing angles to reduce blind spots, and improve driving safety. The configuration of the imaging device in the figure is only an example, and the number, position, and image capture direction of the imaging device can be adjusted according to actual needs.

[0433] <Eighteenth Embodiment>

[0434] Please refer to Fig.34 , is a schematic diagram illustrating an electronic device according to the eighteenth embodiment of the present disclosure.

[0435] In this embodiment, the electronic device 700 is a lightweight unmanned aerial vehicle, such as a drone. The electronic device 700 includes an imaging device 701. The imaging device 701 includes the imaging lens assembly in the first embodiment. The imaging device 701 may be a telephoto imaging device. Similar to the imaging device 100, the imaging device 701 may further include a lens barrel, a supporting device, or a combination thereof. The electronic device 700 uses the imaging device 701 to perform functions such as shooting. Preferably, the electronic device may further include a control unit, a display unit, a storage unit, a random access memory (RAM), or a combination thereof.

[0436] The imaging device disclosed herein is not limited to applications in smart phones, cameras, mobile vehicles, or unmanned aerial vehicles. The imaging device can be applied to mobile focus systems as required, and has the characteristics of excellent aberration correction and good imaging quality. For example, the imaging device can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, driving recorders, reversing imaging devices, multi-lens devices, identification systems, somatosensory game consoles, and wearable devices. The aforementioned electronic devices are merely examples of actual applications of the present disclosure, and do not limit the scope of application of the imaging device disclosed herein.

[0437] Although the present disclosure is disclosed as above with the aforementioned preferred embodiments, it is not intended to limit the present disclosure. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of patent protection of the present disclosure shall be determined by the claims attached to this specification.

Claims

1. An imaging lens assembly, characterized in that: It includes two mirror groups. The two mirror groups are, in order from the object side to the image side along the optical path, the first mirror group and the second mirror group. The two mirror groups include six lens groups. The six lens groups are, in order from the object side to the image side along the optical path, the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group. The first mirror group includes the first lens group, the second lens group, and the third lens group. The second mirror group includes a front mirror group and a rear mirror group. The front mirror group includes the fourth lens group. The rear mirror group includes the fifth lens group and the sixth lens group; Among them, the first lens group, the second lens group, the third lens group, the fifth lens group, and the sixth lens group are each a single-piece lens; Among them, the fourth lens group is a single-piece lens or a lens group composed of two lenses; when the fourth lens group is a single-piece lens, the fourth lens group includes a front lens; when the fourth lens group is a lens group composed of two lenses combined, the fourth lens group includes a front lens and a rear lens in order from the object side to the image side along the optical path; Among them, the total number of mirror groups of the imaging lens group is two, the total number of lens groups of the imaging lens group is six, the total number of lens pieces of the imaging lens group is six to seven, all the lenses of the imaging lens group respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction, and there are no other interpolated lenses between the first lens group and the sixth lens group; Among them, the image-side surface of the first lens group is concave near the optical axis, the object-side surface of the third lens group is convex near the optical axis, the front lens has a negative refractive power, and the image-side surface of the front lens is concave near the optical axis; Among them, the maximum viewing angle in the imaging lens group is FOV, the distance on the optical axis from the image-side surface of the front lens to the object-side surface of the fifth lens group is Dra2r9, the distance on the optical axis of the first mirror group is DG1, the distance on the optical axis of the front mirror group is DG2f, the thickness of the front lens on the optical axis is CTa, the thickness of the fifth lens group on the optical axis is CT5, the distance on the optical axis from the object-side surface of the first lens group to an imaging surface is TL, the distance on the optical axis between the first lens group and the second lens group is T12, the entrance pupil diameter of the imaging lens group is EPD, the focal length of the imaging lens group is f, the combined focal length of the first lens group and the second lens group is f12, the combined focal length of the second lens group and the third lens group is f23, the focal length of the front mirror group is fG2f, and it satisfies the following conditions: 10.0 degrees < FOV < 45.0 degrees; 0.65 < Dra2r9 / CT5 < 2.10; DG1 / DG2f < 1.68; 2.40 < TL / EPD < 4.10; -1.30 < f / f23 - |f / f12| + f / fG2f < 3.00; and 10 × T12 / CTa < 2.

50.

2. The imaging lens assembly according to claim 1, characterized in that: It further includes a diaphragm. The diaphragm is disposed on the object side of the second mirror group, and at least one of the object-side surface and the image-side surface of at least one lens in the first mirror group is spherical.

3. The imaging lens assembly according to claim 1, characterized in that: The focal length of the imaging lens group is f, the focal length of the first lens group is fG1, the radius of curvature of the image-side surface of the first lens group is R2, and the radius of curvature of the image-side surface of the front lens is Ra2, which satisfy the following conditions: 0.10 < f / fG1 < 1.60; and 0.80 < |R2 / Ra2| < 15.

00.

4. The imaging lens assembly according to claim 1, characterized in that: The radius of curvature of the image-side surface of the second lens group is R4, the radius of curvature of the image-side surface of the third lens group is R6, the focal length of the imaging lens group is f, the distance between the fifth lens group and the sixth lens group on the optical axis is T56, the distance from the object-side surface of the first lens group to the imaging surface on the optical axis is TL, the thickness of the sixth lens group on the optical axis is CT6, and the maximum imaging height of the imaging lens group is ImgH, which satisfy the following conditions: 2.50 < |R4| / f + |R6| / f; and 3.30 < T56 / CT6 + TL / ImgH < 10.

50.

5. The imaging lens assembly according to claim 1, characterized in that: The Abbe number of the first lens group is V1, the Abbe number of the second lens group is V2, and the Abbe number of the front lens is Va, which satisfy the following conditions: 1.00 < (V1 + V2) / Va < 3.

80.

6. The imaging lens assembly according to claim 1, characterized in that: The radius of curvature of the object-side surface of the second lens group is R3, the radius of curvature of the image-side surface of the front lens is Ra2, the focal length of the imaging lens group is f, the combined focal length of the first lens group and the second lens group is f12, and the combined focal length of the second lens group and the third lens group is f23, which satisfy the following conditions: 0.60 < |R3 / Ra2| < 20.00; and 0.00 < f / f12 + f / f23.

7. The imaging lens assembly according to claim 1, characterized in that: The fourth lens group is a lens group composed of two lenses combined, and the sixth lens group has a negative refractive power.

8. The imaging lens assembly according to claim 7, characterized in that: The rear lens has a positive refractive power, and at least one lens in the imaging lens group is made of glass material.

9. The imaging lens assembly according to claim 1, characterized in that: The distance parallel to the optical axis between the position of the maximum effective radius of the object-side surface of the front lens and the position of the maximum effective radius of the image-side surface of the front lens is ETa, the distance parallel to the optical axis between the position of the maximum effective radius of the object-side surface of the fifth lens group and the position of the maximum effective radius of the image-side surface of the fifth lens group is ET5, the maximum effective radius of the object-side surface of the first lens group is Y1R1, the maximum effective radius of the image-side surface of the sixth lens group is Y6R2, and the maximum absolute value of the distortion aberration of the imaging lens group on the imaging surface within the maximum field of view is |Dist|max, which satisfy the following conditions: 0.80 < ETa / ET5 < 3.50; 0.50 < Y6R2 / Y1R1 < 1.60; and |Dist|max < 5.00%.

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

11. An electronic device, characterized in that: Comprising: The imaging device according to claim 10.

12. An imaging lens assembly, characterized in that: It includes two mirror groups, which are the first mirror group and the second mirror group in sequence from the object side to the image side along the optical path. The two mirror groups include six lens groups, which are the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group in sequence from the object side to the image side along the optical path. The first mirror group includes the first lens group, the second lens group, and the third lens group. The second mirror group includes a front mirror group and a rear mirror group. The front mirror group includes the fourth lens group, and the rear mirror group includes the fifth lens group and the sixth lens group; Among them, the first lens group, the second lens group, the third lens group, the fifth lens group, and the sixth lens group are each a single-piece lens; Among them, the fourth lens group is a single-piece lens or a cemented lens composed of two lenses; when the fourth lens group is a single-piece lens, the fourth lens group includes a front lens; when the fourth lens group is a cemented lens composed of two lenses, the fourth lens group includes a front lens and a rear lens in sequence from the object side to the image side along the optical path; Among them, the total number of mirror groups of the imaging lens group is two, the total number of lens groups of the imaging lens group is six, the total number of lens pieces of the imaging lens group is six to seven, all the lenses of the imaging lens group respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction, and there is no other interpolated lens between the first lens group and the sixth lens group; Among them, the image-side surface of the first lens group is concave near the optical axis, the object-side surface of the third lens group is convex near the optical axis, the front lens has a negative refractive power, and the image-side surface of the front lens is concave near the optical axis; Among them, the maximum viewing angle in the imaging lens group is FOV, the distance of the first mirror group on the optical axis is DG1, the distance of the front mirror group on the optical axis is DG2f, the distance from the object-side surface of the first lens group to an imaging surface on the optical axis is TL, the entrance pupil diameter of the imaging lens group is EPD, the radius of curvature of the most object-side surface of the fourth lens group is RU4f, the radius of curvature of the most image-side surface of the fourth lens group is RU4r, the focal length of the second lens group is f2, the focal length of the third lens group is f3, the focal length of the fifth lens group is f5, and they satisfy the following conditions: 15.0 degrees < FOV < 42.0 degrees; DG1 / DG2f < 1.68; 2.40 < TL / EPD < 4.10; RU4f / RU4r < 7.50; and 1.60 < |f3 + f5| / |f2|.

13. The imaging lens assembly according to claim 12, characterized in that: At least one of the object-side surface and the image-side surface of at least one lens in the first mirror group is a spherical surface; Among them, the maximum viewing angle in the imaging lens group is FOV, and it satisfies the following conditions: 25.0 degrees < FOV < 42.0 degrees.

14. The imaging lens assembly according to claim 12, characterized in that: The distance of the first mirror group on the optical axis is DG1, the distance of the second mirror group on the optical axis is DG2, the Abbe number of the first lens group is V1, the Abbe number of the second lens group is V2, and the Abbe number of the front lens is Va, and they satisfy the following conditions: 0.20 < DG1 / DG2 < 0.65; and 1.00 < (V1 + V2) / Va < 3.80。 15. The imaging lens assembly according to claim 12, characterized in that: The distance between the fifth lens group and the sixth lens group on the optical axis is T56, the distance from the object side surface of the first lens group to the imaging surface on the optical axis is TL, the thickness of the sixth lens group on the optical axis is CT6, the maximum imaging height of the imaging lens group is ImgH, the radius of curvature of the object side surface of the first lens group is R1, and the radius of curvature of the image side surface of the first lens group is R2, which satisfy the following conditions: 3.30 < T56 / CT6 + TL / ImgH < 10.50; and 0.25 < |R1 / R2|.

16. The imaging lens assembly according to claim 12, characterized in that: The focal length of the imaging lens group is f, the combined focal length of the first lens group and the second lens group is f12, the combined focal length of the second lens group and the third lens group is f23, and the focal length of the front lens group is fG2f, which satisfy the following conditions: -1.50 < f / f23 - |f / f12| + f / fG2f < 3.

50.

17. The imaging lens assembly according to claim 12, characterized in that: It further includes a diaphragm. Wherein, the maximum imaging height of the imaging lens group is ImgH, the distance from the diaphragm to the image side surface of the sixth lens group on the optical axis is SD, and the distance from the object side surface of the first lens group to the imaging surface on the optical axis is TL, which satisfy the following conditions: 4.30 < 10×(ImgH / SD + ImgH / TL) < 8.

90.

18. The imaging lens assembly according to claim 12, characterized in that: The focal length of the imaging lens group is f, the focal length of the first lens group is fG1, the focal length of the second lens group is fG2, the distance from the image side surface of the front lens to the object side surface of the fifth lens group on the optical axis is Dra2r9, and the thickness of the fifth lens group on the optical axis is CT5, which satisfy the following conditions: 0.25 < |f / fG1| + |f / fG2|; and 0.65 < Dra2r9 / CT5 < 2.

10.

19. The imaging lens assembly according to claim 12, characterized in that: The fourth lens group is a cemented lens composed of two lenses, and the rear lens has positive refractive power; Wherein, the distance between the front lens and the rear lens on the optical axis is Tab, which satisfy the following conditions: 0.001 mm < Tab < 0.020 mm.

20. The imaging lens assembly according to claim 12, characterized in that: The maximum viewing angle of the imaging lens group is FOV, the distance on the optical axis from the image side surface of the front lens to the object side surface of the fifth lens group is Dra2r9, the distance of the first lens group on the optical axis is DG1, the distance of the front lens group on the optical axis is DG2f, the thickness of the front lens on the optical axis is CTa, the thickness of the fifth lens group on the optical axis is CT5, the distance on the optical axis from the object side surface of the first lens group to the imaging plane is TL, the spacing between the first lens group and the second lens group on the optical axis is T12, The entrance pupil diameter of the imaging lens group is EPD, the focal length of the imaging lens group is f, the focal length of the second lens group is f2, the focal length of the third lens group is f3, the focal length of the fifth lens group is f5, the combined focal length of the first lens group and the second lens group is f12, the combined focal length of the second lens group and the third lens group is f23, the focal length of the front lens group is fG2f, the radius of curvature of the most object side surface of the fourth lens group is RU4f, and the radius of curvature of the most image side surface of the fourth lens group is RU4r, which satisfies the following conditions: 29.8 degrees ≤ FOV ≤ 37.0 degrees; 0.81≤Dra2r9 / CT5≤1.81; 0.60≤DG1 / DG2f≤1.44; 2.71≤TL / EPD≤3.73; -0.81≤f / f23-|f / f12|+f / fG2f≤2.28; 0.06≤10×T12 / CTa≤1.31; -2.91≤RU4f / RU4r≤1.98; as well as 1.75≤|f3+f5| / |f2|≤48.

28.

21. An imaging lens assembly, characterized in that: The invention comprises two lens groups, wherein the two lens groups are sequentially a first lens group and a second lens group along an optical path from an object side to an image side, the two lens groups comprise six lens groups, wherein the six lens groups are sequentially a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a sixth lens group along an optical path from the object side to the image side, the first lens group comprises the first lens group, the second lens group and the third lens group, the second lens group comprises a front lens group and a rear lens group, the front lens group comprises the fourth lens group, and the rear lens group comprises the fifth lens group and the sixth lens group; Wherein, each of the first lens group, the second lens group, the third lens group, the fifth lens group and the sixth lens group is a single lens, the fourth lens group is a lens group consisting of two lenses, and the fourth lens group includes a front lens and a rear lens in sequence from the object side to the image side along the optical path; The total number of lens groups of the imaging lens group is two, the total number of lens groups of the imaging lens group is six, the total number of lenses of the imaging lens group is seven, all lenses of the imaging lens group respectively have an object side surface facing the object side direction and an image side surface facing the image side direction, and there are no other interpolated lenses between the first lens group to the sixth lens group; The object side surface of the third lens group is convex at the near optical axis, the object side surface of the front lens is concave at the near optical axis, and the sixth lens group has negative refractive power; Among them, the maximum viewing angle in the imaging lens group is FOV, the distance on the optical axis from the object side surface of the front lens to the object side surface of the fifth lens group is Dra1r9, the distance on the optical axis from the image side surface of the front lens to the object side surface of the fifth lens group is Dra2r9, the thickness of the first lens group on the optical axis is CT1, the thickness of the second lens group on the optical axis is CT2, the thickness of the fifth lens group on the optical axis is CT5, and the distance between the front lens and the rear lens on the optical axis is Tab, which satisfy the following conditions: 10.0 degrees < FOV < 55.0 degrees; 0.50 < Dra2r9 / CT5 < 2.30; 3.0 < Dra1r9 / CT1 < 15.0; and 1.80 < 0.1×CT2 / Tab.

22. The imaging lens assembly according to claim 21, characterized in that: At least one of the object side surface and the image side surface of at least one lens in the first lens group is a spherical surface, at least one lens in the imaging lens group is made of glass material, and there is no relative movement between the lenses of the imaging lens group.

23. The imaging lens assembly according to claim 21, characterized in that: The focal length of the imaging lens group is f, the focal length of the first lens group is f1, the focal length of the second lens group is f2, the radius of curvature of the object side surface of the first lens group is R1, the radius of curvature of the object side surface of the fifth lens group is R9, and the radius of curvature of the image side surface of the sixth lens group is R12, which satisfy the following conditions: -0.70 < f / f1 + f / f2 < 1.15; and |R1| / f + |R9| / f + |R12| / f < 25.

0.

24. The imaging lens assembly according to claim 21, characterized in that: The distance of the first lens group on the optical axis is DG1, the distance of the front lens group on the optical axis is DG2f, the radius of curvature of the image side surface of the front lens is Ra2, the radius of curvature of the object side surface of the rear lens is Rb1, and the focal length of the imaging lens group is f, which satisfy the following conditions: DG1 / DG2f < 1.80; and |Ra2| / f + |Rb1| / f < 3.

30.

25. The imaging lens assembly according to claim 21, characterized in that: The distance on the optical axis from the object side surface of the first lens group to an imaging plane is TL, and the entrance pupil diameter of the imaging lens group is EPD, which satisfy the following conditions: 1.50 < TL / EPD < 4.

10.

26. The imaging lens assembly according to claim 21, characterized in that: It further includes a diaphragm. Among them, the distance between the fifth lens group and the sixth lens group on the optical axis is T56, the distance on the optical axis from the object side surface of the first lens group to an imaging plane is TL, the thickness of the sixth lens group on the optical axis is CT6, the maximum imaging height of the imaging lens group is ImgH, the distance on the optical axis from the diaphragm to the object side surface of the fifth lens group is Dsr9, and the distance on the optical axis from the diaphragm to the image side surface of the fifth lens group is Dsr10, which satisfy the following conditions: 3.30 < T56 / CT6 + TL / ImgH < 10.50; and Dsr9 / Dsr10 < 0.

98.

27. The imaging lens assembly according to claim 21, characterized in that: The rear lens has positive refractive power, and the object side surface of the rear lens is convex near the optical axis.

28. The imaging lens assembly according to claim 21, characterized in that: At least three lenses in the imaging lens group have at least one of their object side surfaces and image side surfaces as spherical surfaces; The maximum imaging height of the imaging lens group is ImgH, the maximum effective radius of the object side surface of the first lens group is Y1R1, and the maximum effective radius of the object side surface of the second lens group is Y2R1, which meets the following conditions: 0.65<2×ImgH / (Y1R1+Y2R1)<2.

00.

29. The imaging lens assembly according to claim 21, characterized in that: The maximum viewing angle of the imaging lens group is FOV, the distance between the object side surface of the front lens and the object side surface of the fifth lens group on the optical axis is Dra1r9, the distance between the image side surface of the front lens and the object side surface of the fifth lens group on the optical axis is Dra2r9, the thickness of the first lens group on the optical axis is CT1, the thickness of the second lens group on the optical axis is CT2, the thickness of the fifth lens group on the optical axis is CT5, and the spacing distance between the front lens and the rear lens on the optical axis is Tab, which satisfies the following conditions: 29.8 degrees ≤ FOV ≤ 37.0 degrees; 0.98≤Dra2r9 / CT5≤1.91; 3.38≤Dra1r9 / CT1≤9.51; as well as 3.24≤0.1×CT2 / Tab≤65.72.

Images