Camera lens set

Abstract

The present invention provides a camera lens assembly having only seven lenses, which, from the object side to the image side of the camera lens assembly, include: a first lens having positive focal power; a second lens having negative focal power; a third lens; a fourth lens; a fifth lens having negative focal power; a sixth lens having positive focal power, the object side surface of the sixth lens being concave; and a seventh lens having positive focal power, the image side surface of the seventh lens being concave. The present invention solves the problem in the prior art of camera lens assemblies in which it is difficult to achieve both high image quality and good processing performance. The present invention also solves the problem in the prior art of camera lens assemblies in which it is difficult to achieve both high image quality and good processing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging equipment, and in particular to a camera lens assembly. Background Art

[0002] With advancements in mobile phone lens technology, some traditional shooting scenarios no longer meet the needs of photography enthusiasts. However, to achieve higher-quality, larger-size images, large-format camera lens systems require more aberration correction. This limits the design of the lens, especially the thickness of the front lens, resulting in poor workability. Furthermore, the high pressure applied during assembly increases the risk of lens deformation and breakage. Therefore, designing the thickness of the front lens of a camera lens system to achieve both a large image area and high image quality while also ensuring good workability is a challenging task. Summary of the Invention

[0003] The main purpose of the present invention is to provide a camera lens assembly to solve the problem in the prior art that it is difficult to achieve both high image quality and good processing performance in camera lens assemblies.

[0004] In order to achieve the above-mentioned object, according to one aspect of the present invention, a camera lens group is provided, which has only seven lenses, and includes, from the object side to the image side of the camera lens group: a first lens, the first lens has positive focal power; a second lens, the second lens has negative focal power; a third lens; a fourth lens; a fifth lens, the fifth lens has negative focal power; a sixth lens, the sixth lens has positive focal power, and the object side surface of the sixth lens is concave; a seventh lens, the seventh lens has positive focal power, and the image side surface of the seventh lens is concave; wherein, half of the maximum field of view Semi-FOV of the camera lens group and the effective focal length f of the camera lens group satisfy the following relationship: TAN(Semi-FOV)*f>4mm; and the center thickness CT1 of the first lens on the optical axis of the camera lens group, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy the following relationship: 0.7<(CT1-CT4) / CT7<2.2.

[0005] According to another aspect of the present invention, a camera lens assembly is provided, which has only seven lenses, and includes, from the object side to the image side of the camera lens assembly, a first lens, the first lens having positive focal power; a second lens, the second lens having negative focal power; a third lens; a fourth lens; a fifth lens, the fifth lens having negative focal power, and the object side surface of the fifth lens is concave; a sixth lens, the sixth lens having positive focal power, and the object side surface of the sixth lens is concave; and a seventh lens, the seventh lens having positive focal power; wherein the camera lens assembly The effective focal length f of the group and the entrance pupil diameter EPD of the camera lens group satisfy: f / EPD<2; the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: 1<(R2+R1) / (R2-R1)<4; the center thickness CT1 of the first lens on the optical axis of the camera lens group, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy: 0.7<(CT1-CT4) / CT7<2.2.

[0006] According to another aspect of the present invention, a camera lens group is provided, which has only seven lenses, and includes, from the object side to the image side of the camera lens group: a first lens, the first lens has positive optical focal length; a second lens, the second lens has negative optical focal length; a third lens; a fourth lens; a fifth lens, the fifth lens has negative optical focal length, and the object side surface of the fifth lens is concave; a sixth lens, the sixth lens has positive optical focal length, and the object side surface of the sixth lens is concave; and a seventh lens, the seventh lens has positive optical focal length, and the image side surface of the seventh lens is concave; wherein the center thickness CT6 of the sixth lens on the optical axis of the camera lens group, the center thickness CT7 of the seventh lens on the optical axis, the center thickness CT1 of the first lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis satisfy the following relationship: 1<(CT6+CT7) / (CT1-CT2)<2.

[0007] Furthermore, the effective focal length f of the camera lens group, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy the following conditions: <f / f6+f / f7<1。

[0008] Furthermore, the effective focal length f5 of the fifth lens and the curvature radius R9 of the object side surface of the fifth lens satisfy: <f5 / R9<5。

[0009] Furthermore, the effective focal length f of the camera lens assembly and the curvature radius R7 of the object-side surface of the fourth lens satisfy the following relationship: 0<R7 / f<10.

[0010] Furthermore, the air gap T23 between the second lens and the third lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: 0.6 < (T23 - T12) / T34 < 6; the effective focal length f of the camera lens group and the effective focal length f5 of the fifth lens satisfy: f5 / f < 0.

[0011] Furthermore, the air gap T67 between the sixth lens and the seventh lens on the optical axis and the air gap T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0 < T67 / T56 < 2.

[0012] Furthermore, the on-axis distance SL from the aperture stop of the camera lens group to the imaging plane of the camera lens group and the axial distance TTL from the object side of the first lens to the imaging plane satisfy: 0.5 < SL / TTL < 1.

[0013] Furthermore, the air gap T45 between the fourth lens and the fifth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the central thickness CT4 of the fourth lens on the optical axis satisfy: 1 < T45 / (CT5 - CT4) < 8.

[0014] Furthermore, the axial distance TTL from the object side of the first lens to the imaging plane of the camera lens group and the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses with optical power among the lenses closest to the imaging plane satisfy: 4 < TTL / ∑AT < 8.

[0015] Furthermore, the curvature radius R3 of the object side of the second lens, the curvature radius R4 of the image side of the second lens, and the curvature radius R5 of the object side of the third lens satisfy: 0 < (R3 - R4) / R5 < 2.

[0016] Furthermore, the curvature radius R11 of the object side of the sixth lens and the effective focal length f of the camera lens group satisfy: -8 < R11 / f < 0; the effective focal length f of the camera lens group and the curvature radius R14 of the image side of the seventh lens satisfy: 0 < f / R14 < 8.

[0017] Furthermore, the Abbe number V1 of the first lens, the Abbe number V2 of the second lens, and the Abbe number V3 of the third lens satisfy: 4 < (V1 + V3) / V2 < 6.

[0018] Furthermore, the Abbe number V5 of the fifth lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy: 0 < (V5 + V6) / V7 < 1.

[0019] Furthermore, the maximum value Nmax of the refractive indices of the seven lenses is less than 1.7.

[0020] Furthermore, the axial distance SAG62 between the intersection point of the image side surface of the sixth lens and the optical axis of the camera lens group and the vertex of the effective radius of the image side surface of the sixth lens, the axial distance SAG72 between the intersection point of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, the central thickness CT6 of the sixth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis satisfy: -4 < SAG62 / CT6 + SAG72 / CT7 < -1.

[0021] Furthermore, the effective focal length f of the camera lens group and the curvature radius R11 of the object side surface of the sixth lens satisfy: -8 < R11 / f < 0; the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: R11 / R12 > 0; the curvature radius R13 of the object side surface of the seventh lens and the curvature radius R14 of the image side surface of the seventh lens satisfy: R14 / R13 > 0.

[0022] Furthermore, the Abbe number V6 of the sixth lens and the Abbe number V7 of the seventh lens satisfy: (V7 - V6) / V6 > 0.6.

[0023] Applying the technical solution of the present invention, the camera lens group only has seven lenses, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens in sequence from the object side to the image side of the camera lens group. The first lens has a positive optical power; the second lens has a negative optical power; the fifth lens has a negative optical power; the sixth lens has a positive optical power, and the object side surface of the sixth lens is concave; the seventh lens has a positive optical power, and the image side surface of the seventh lens is concave; wherein, half of the maximum field angle of the camera lens group Semi-FOV and the effective focal length f of the camera lens group satisfy: TAN(Semi-FOV)*f > 4 mm; the central thickness CT1 of the first lens on the optical axis of the camera lens group, the central thickness CT4 of the fourth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis satisfy: 0.7 < (CT1 - CT4) / CT7 < 2.2.

[0024] Through the control of the optical power of each lens, the surface types of the fifth, sixth and seventh lenses, as well as Semi-FOV, f, CT1, CT4, and CT7, the present application achieves the imaging effect of a large image surface. At the same time, by controlling the central thicknesses of the first, fourth and seventh lenses, the contribution of distortion can be controlled within a reasonable range, avoiding the need for后期 software debugging, improving the aberration correction ability of the camera lens group, being beneficial to obtaining more real picture details, improving the optical performance, and also improving the processability of the front-end lens, especially the first lens, enhancing the pressure-bearing capacity of the front-end lens, and avoiding problems such as deformation and fragmentation of the lens during processing and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 A schematic structural diagram of a camera lens assembly according to Example 1 of the present invention is shown;

[0027] Figures 2 to 5 Shown respectively Figure 1 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group;

[0028] Figure 6 A schematic structural diagram of a camera lens assembly according to Example 2 of the present invention is shown;

[0029] Figures 7 to 10 Shown respectively Figure 6 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group;

[0030] Figure 11 A schematic structural diagram of a camera lens assembly according to Example 3 of the present invention is shown;

[0031] Figures 12 to 15 Shown respectively Figure 11 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group;

[0032] Figure 16 A schematic structural diagram of a camera lens assembly according to Example 4 of the present invention is shown;

[0033] Figures 17 to 20 Shown respectively Figure 16 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group;

[0034] Figure 21 A schematic structural diagram of a camera lens assembly according to Example 5 of the present invention is shown;

[0035] Figures 22 to 25 Shown respectively Figure 21 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group;

[0036] Figure 26 A schematic structural diagram of a camera lens assembly according to Example 6 of the present invention is shown;

[0037] Figures 27 to 30 Shown respectively Figure 26The on-axis chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens group.

[0038] The above drawings include the following reference numerals:

[0039] STO, aperture; E1, first lens; S1, object-side surface of the first lens; S2, image-side surface of the first lens; E2, second lens; S3, object-side surface of the second lens; S4, image-side surface of the second lens; E3, third lens; S5, object-side surface of the third lens; S6, image-side surface of the third lens; E4, fourth lens; S7, object-side surface of the fourth lens; S8, image-side surface of the fourth lens; E5, fifth lens; S9, object-side surface of the fifth lens; S10, image-side surface of the fifth lens; E6, sixth lens; S11, object-side surface of the sixth lens; S12, image-side surface of the sixth lens; E7, seventh lens; S13, object-side surface of the seventh lens; S14, image-side surface of the seventh lens; E8, filter; S15, object-side surface of the filter; S16, image-side surface of the filter; S17, imaging surface. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0042] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0043] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0044] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0045] In this article, the paraxial area refers to the area near the optical axis. If the lens surface is convex and the convex surface position is not defined, it means that the lens surface is convex at least in the paraxial area; if the lens surface is concave and the concave surface position is not defined, it means that the lens surface is concave at least in the paraxial area. The surface of each lens close to the object side is called the object side surface of the lens, and the surface of each lens close to the image side is called the image side surface of the lens. The judgment of the surface shape in the paraxial area can be based on the judgment method of common knowledge in this field, and the positive and negative R value (R refers to the curvature radius of the paraxial area, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the convexity. In terms of the object side, when the R value is positive, it is judged to be convex, and when the R value is negative, it is judged to be concave; in terms of the image side, when the R value is positive, it is judged to be concave, and when the R value is negative, it is judged to be convex.

[0046] The main purpose of the present invention is to provide a camera lens assembly to solve the problem in the prior art that it is difficult to achieve both high image quality and good processing performance in camera lens assemblies.

[0047] Example 1

[0048] like Figures 1 to 30 As shown, the camera lens group has only seven lenses, which include the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens in sequence from the object side to the image side of the camera lens group, the first lens has positive focal power; the second lens has negative focal power; the fifth lens has negative focal power; the sixth lens has positive focal power, and the object side surface of the sixth lens is concave; the seventh lens has positive focal power, and the image side surface of the seventh lens is concave; wherein, half of the maximum field of view Semi-FOV of the camera lens group and the effective focal length f of the camera lens group satisfy: TAN(Semi-FOV)*f>4mm; the center thickness CT1 of the first lens on the optical axis of the camera lens group, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy: 0.7<(CT1-CT4) / CT7<2.2.

[0049] The present application achieves an imaging effect of a large image surface by controlling the optical power of each lens, the surface shape of the fifth lens, the sixth lens and the seventh lens, as well as the Semi-FOV, f, CT1, CT4 and CT7. At the same time, the center thickness of the first lens, the fourth lens and the seventh lens is controlled, so that the distortion contribution can be controlled within a reasonable range, avoiding the need for later software debugging, improving the aberration correction capability of the camera lens group, facilitating the acquisition of more realistic image details, improving optical performance, and improving the processability of the front-end lens, especially the first lens, and improving the pressure-bearing capacity of the front-end lens, thereby avoiding the problem of deformation and fragmentation of the lens during the processing and assembly process.

[0050] Preferably, for half of the maximum field angle (Semi-FOV) of the camera lens group and the effective focal length f of the camera lens group, the following condition is satisfied: 5.27 mm ≤ TAN(Semi-FOV) * f ≤ 5.33 mm.

[0051] Preferably, for the central thickness CT1 of the first lens on the optical axis of the camera lens group, the central thickness CT4 of the fourth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis, the following condition is satisfied: 1.03 ≤ (CT1 - CT4) / CT7 ≤ 1.82.

[0052] In this embodiment, for the effective focal length f of the camera lens group, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens, the following condition is satisfied: 0 < f / f6 + f / f7 < 1. By restricting f / f6 + f / f7 within a reasonable range, it can ensure that the light has a small deflection angle from the sixth lens to the seventh lens, avoiding the processing sensitivity caused by steep light rays. Preferably, 0.02 ≤ f / f6 + f / f7 ≤ 0.30.

[0053] In this embodiment, for the effective focal length f5 of the fifth lens and the radius of curvature R9 of the object side surface of the fifth lens, the following condition is satisfied: 0 < f5 / R9 < 5. By restricting f5 / R9 within a reasonable range, it can increase the light diffusion angle, thereby further ensuring the effect of a larger image plane. Preferably, 1.29 ≤ f5 / R9 ≤ 2.22.

[0054] In this embodiment, for the effective focal length f of the camera lens group and the radius of curvature R7 of the object side surface of the fourth lens, the following condition is satisfied: 0 < R7 / f < 10. By restricting R7 / f within a reasonable range, it can avoid the fourth lens from being too curved, reduce the surface optical sensitivity, and is beneficial to the shaping of the fourth lens and the surface stability. Preferably, 0.35 ≤ R7 / f ≤ 6.07.

[0055] In this embodiment, for the air gap T23 between the second lens and the third lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis, the following condition is satisfied: 0.6 < (T23 - T12) / T34 < 6; for the effective focal length f of the camera lens group and the effective focal length f5 of the fifth lens, the following condition is satisfied: f5 / f < 0. By restricting (T23 - T12) / T34 within a reasonable range, the system can obtain sufficient interval space and higher surface freedom, while enhancing the ability of the camera lens group to correct field curvature and astigmatism. Combining the control of the effective focal length of the fifth lens, it can ensure the imaging quality of the camera lens group. Preferably, 1.20 ≤ (T23 - T12) / T34 ≤ 2.96; -3.35 ≤ f5 / f ≤ -2.26.

[0056] In this embodiment, the air gap T67 between the sixth lens and the seventh lens on the optical axis and the air gap T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0 < T67 / T56 < 2. By limiting T67 / T56 within a reasonable range, the field curvature generated by the front-end lenses of the system and the field curvature generated by the rear-end lenses can be balanced, enabling the system to have reasonable field curvature. Preferably, 0.18 ≤ T67 / T56 ≤ 1.35.

[0057] In this embodiment, the on-axis distance SL from the aperture stop of the camera lens group to the imaging plane of the camera lens group and the axial distance TTL from the object side surface of the first lens to the imaging plane satisfy: 0.5 < SL / TTL < 1. By limiting SL / TTL within a reasonable range, off-axis aberrations can be reduced and the imaging quality can be improved. Preferably, 0.89 ≤ SL / TTL ≤ 0.91.

[0058] In this embodiment, the air gap T45 between the fourth lens and the fifth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the central thickness CT4 of the fourth lens on the optical axis satisfy: 1 < T45 / (CT5 - CT4) < 8. By limiting T45 / (CT5 - CT4) within a reasonable range, good processing characteristics of the fourth lens and the fifth lens can be ensured, and a large air gap between the two can be guaranteed, weakening the sensitivity caused by a large difference in the optical power of the fourth lens and the fifth lens. Preferably, 1.42 ≤ T45 / (CT5 - CT4) ≤ 6.87.

[0059] In this embodiment, the axial distance TTL from the object side surface of the first lens to the imaging plane of the camera lens group and the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses with optical power among the lenses closest to the imaging plane satisfy: 4 < TTL / ∑AT < 8. By limiting TTL / ∑AT within a reasonable range, the system has sufficient space for the gaps, and the degree of freedom of change on the lens surface is higher, thereby enabling the camera lens group to obtain stronger correction. Preferably, 5.12 ≤ TTL / ∑AT ≤ 5.91.

[0060] In this embodiment, the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, and the radius of curvature R5 of the object side surface of the third lens satisfy: 0 < (R3 - R4) / R5 < 2. By limiting (R3 - R4) / R5 within a reasonable range, the on-axis aberrations generated by the camera lens group can be effectively balanced. Preferably, 0.57 ≤ (R3 - R4) / R5 ≤ 1.13.

[0061] In this embodiment, the curvature radius R11 of the object side surface of the sixth lens and the effective focal length f of the camera lens group satisfy: -8 < R11 / f < 0; the effective focal length f of the camera lens group and the curvature radius R14 of the image side surface of the seventh lens satisfy: 0 < f / R14 < 8. By limiting R11 / f and f / R14 within a reasonable range, it is beneficial for the camera lens group to better match the chip CRA (chief ray angle), improving the illuminance. As the last two lenses, the sixth lens and the seventh lens have reasonable surface profiles, which can effectively reduce the surface profile sensitivity and at the same time elongate the back focal length, giving higher processing freedom in the module manufacturing process. Preferably, -5.10 ≤ R11 / f ≤ -2.16; 3.27 ≤ f / R14 ≤ 5.33.

[0062] In this embodiment, the central thickness CT6 of the sixth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, the central thickness CT1 of the first lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy: 1 < (CT6 + CT7) / (CT1 - CT2) < 2. By limiting (CT6 + CT7) / (CT1 - CT2) within a reasonable range, good processability of the lenses can be maintained, as well as reasonable arrangement within the system. Preferably, 1.24 ≤ (CT6 + CT7) / (CT1 - CT2) ≤ 1.85.

[0063] In this embodiment, the Abbe number V1 of the first lens, the Abbe number V2 of the second lens, and the Abbe number V3 of the third lens satisfy: 4 < (V1 + V3) / V2 < 6. By limiting (V1 + V3) / V2 within a reasonable range, the large Abbe number differences between the first lens, the third lens and the second lens can balance the lateral chromatic aberration between the lenses, obtaining better imaging quality. Preferably, (V1 + V3) / V2 = 5.50.

[0064] In this embodiment, the Abbe number V5 of the fifth lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy: 0 < (V5 + V6) / V7 < 1. By limiting (V5 + V6) / V7 within a reasonable range, the reasonable Abbe number distribution among the fifth lens, the sixth lens and the seventh lens can balance the lateral chromatic aberration between the lenses, obtaining better imaging quality. Preferably, (V5 + V6) / V7 = 0.85.

[0065] In this embodiment, the maximum refractive index Nmax among the seven lenses is less than 1.7. Controlling the refractive index of the lenses within a certain range can control costs and obtain greater imaging benefits at a lower cost.

[0066] In this embodiment, the axial distance SAG62 between the intersection point of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens, the axial distance SAG72 between the intersection point of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, the central thickness CT6 of the sixth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis satisfy: -4 < SAG62 / CT6 + SAG72 / CT7 < -1. By restricting SAG62 / CT6 + SAG72 / CT7 within a reasonable range, it is possible to avoid excessive bending of the sixth and seventh lenses, reduce the processing difficulty, and at the same time endow the camera lens group with a better ability to balance chromatic aberration and distortion. Preferably, -2.28 ≤ SAG62 / CT6 + SAG72 / CT7 ≤ -1.80.

[0067] In this embodiment, the effective focal length f of the camera lens group and the curvature radius R11 of the object side surface of the sixth lens satisfy: -8 < R11 / f < 0; the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: R11 / R12 > 0; the curvature radius R13 of the object side surface of the seventh lens and the curvature radius R14 of the image side surface of the seventh lens satisfy: R14 / R13 > 0. By controlling the signs of the curvature radii of the object side and the image side of the sixth and seventh lenses to be the same, a greater optical power can be obtained for the lenses, and the light rays can have a smaller deflection angle between the sixth and seventh lenses. Controlling R11 / f within a certain range can reduce the magnitude of optical distortion and ensure good imaging quality. Preferably, -5.10 ≤ R11 / f ≤ -2.16; 1.02 ≤ R11 / R12 ≤ 2.21; 0.89 ≤ R14 / R13 ≤ 0.92.

[0068] In this embodiment, the effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy: f / EPD < 2; the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: 1 < (R2 + R1) / (R2 - R1) < 4. By controlling f / EPD within a reasonable range, the F number of the camera lens group with a large image surface can be made smaller, ensuring a large aperture for the system and good imaging quality in a dark environment. By controlling (R2 + R1) / (R2 - R1) within a reasonable range, the surface shape change difference between the object side and the image side of the first lens can be kept small, obtaining good processability. Preferably, 1.7 ≤ f / EPD ≤ 1.8; 2.01 ≤ (R2 + R1) / (R2 - R1) ≤ 3.10.

[0069] In this embodiment, the Abbe number V6 of the sixth lens element and the Abbe number V7 of the seventh lens element satisfy the following relationship: (V7 - V6) / V6 > 0.6. By limiting (V7 - V6) / V6 to a reasonable range, system chromatic aberration can be effectively corrected, resulting in clearer imaging and improved image quality. Preferably, (V7 - V6) / V6 = 1.16.

[0070] Example 2

[0071] like Figures 1 to 30 As shown, the camera lens group has only seven lenses, which include, from the object side to the image side of the camera lens group: a first lens, the first lens has positive focal power; a second lens, the second lens has negative focal power; a third lens; a fourth lens; a fifth lens, the fifth lens has negative focal power, and the object side surface of the fifth lens is concave; a sixth lens, the sixth lens has positive focal power, and the object side surface of the sixth lens is concave; and a seventh lens, the seventh lens has positive focal power. In particular, the effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy the following relationship: f / EPD<2; the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy the following relationship: 1<(R2+R1) / (R2-R1)<4; the center thickness CT1 of the first lens on the optical axis of the camera lens group, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy the following relationship: 0.7<(CT1-CT4) / CT7<2.2.

[0072] By controlling the optical power of each lens, the surface shapes of the fifth, sixth, and seventh lenses, as well as f, EPD, R2, R1, CT1, CT4, and CT7, the large-image-area camera lens assembly has a low F-number, ensuring a large aperture and good imaging quality even in dark environments. This also minimizes the surface shape differences between the object-side and image-side surfaces of the first lens, resulting in excellent processability. Simultaneously controlling the center thicknesses of the first, fourth, and seventh lenses keeps the distortion contribution within a reasonable range, eliminating the need for post-processing software debugging. This improves the aberration correction capabilities of the camera lens assembly, facilitates capturing more realistic image detail, and enhances optical performance. It also enhances the processability of the front-end lens, particularly the first lens, and its pressure-bearing capacity, preventing lens deformation and breakage during processing and assembly.

[0073] Preferably, the effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy the following relationship: 1.7≤f / EPD≤1.8.

[0074] Preferably, a curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens satisfy the following relationship: 2.01≤(R2+R1) / (R2-R1)≤3.10.

[0075] In this embodiment, the effective focal length f of the camera lens group, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy: 0 < f / f6 + f / f7 < 1. By limiting f / f6 + f / f7 within a reasonable range, it can ensure that the light has a small deflection angle from the sixth lens to the seventh lens, avoiding the processing sensitivity caused by relatively steep light. Preferably, 0.02 ≤ f / f6 + f / f7 ≤ 0.30.

[0076] In this embodiment, the effective focal length f5 of the fifth lens and the curvature radius R9 of the object side surface of the fifth lens satisfy: 0 < f5 / R9 < 5. By limiting f5 / R9 within a reasonable range, it can increase the light diffusion angle, thereby further ensuring the effect of a larger image surface. Preferably, 1.29 ≤ f5 / R9 ≤ 2.22.

[0077] In this embodiment, the effective focal length f of the camera lens group and the curvature radius R7 of the object side surface of the fourth lens satisfy: 0 < R7 / f < 10. By limiting R7 / f within a reasonable range, it can avoid the fourth lens from being too curved, reduce the surface optical sensitivity, and is beneficial to the shaping of the fourth lens and the surface stability. Preferably, 0.35 ≤ R7 / f ≤ 6.07.

[0078] In this embodiment, the air gap T23 between the second lens and the third lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: 0.6 < (T23 - T12) / T34 < 6; the effective focal length f of the camera lens group and the effective focal length f5 of the fifth lens satisfy: f5 / f < 0. By limiting (T23 - T12) / T34 within a reasonable range, the system can obtain sufficient space and higher surface freedom, while improving the ability of the camera lens group to correct field curvature and astigmatism. Combining with the control of the effective focal length of the fifth lens, it can ensure the imaging quality of the camera lens group. Preferably, 1.20 ≤ (T23 - T12) / T34 ≤ 2.96; -3.35 ≤ f5 / f ≤ -2.26.

[0079] In this embodiment, the air gap T67 between the sixth lens and the seventh lens on the optical axis and the air gap T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0 < T67 / T56 < 2. By limiting T67 / T56 within a reasonable range, it can balance the field curvature generated by the front-end lens and the field curvature generated by the rear-end lens of the system, making the system have reasonable field curvature. Preferably, 0.18 ≤ T67 / T56 ≤ 1.35.

[0080] In this embodiment, the axial distance SL from the aperture stop of the camera lens group to the imaging plane of the camera lens group and the axial distance TTL from the object side surface of the first lens to the imaging plane satisfy: 0.5 < SL / TTL < 1. By restricting SL / TTL within a reasonable range, off-axis aberration can be reduced and imaging quality can be improved. Preferably, 0.89 ≤ SL / TTL ≤ 0.91.

[0081] In this embodiment, the air gap T45 on the optical axis between the fourth lens and the fifth lens, the central thickness CT5 on the optical axis of the fifth lens, and the central thickness CT4 on the optical axis of the fourth lens satisfy: 1 < T45 / (CT5 - CT4) < 8. By restricting T45 / (CT5 - CT4) within a reasonable range, good processability characteristics of the fourth lens and the fifth lens can be ensured, and a relatively large air gap between them can be ensured, weakening the sensitivity caused by a large difference in the optical power between the fourth lens and the fifth lens. Preferably, 1.42 ≤ T45 / (CT5 - CT4) ≤ 6.87.

[0082] In this embodiment, the axial distance TTL from the object side surface of the first lens to the imaging plane of the camera lens group and the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses with optical power among the lenses closest to the imaging plane from the first lens satisfy: 4 < TTL / ∑AT < 8. By restricting TTL / ∑AT within a reasonable range, the system has sufficient interval space, and the degree of freedom of change on the lens surface is higher, thereby enabling the camera lens group to obtain stronger correction. Preferably, 5.12 ≤ TTL / ∑AT ≤ 5.91.

[0083] In this embodiment, the curvature radius R3 of the object side surface of the second lens, the curvature radius R4 of the image side surface of the second lens, and the curvature radius R5 of the object side surface of the third lens satisfy: 0 < (R3 - R4) / R5 < 2. By restricting (R3 - R4) / R5 within a reasonable range, the axial aberration generated by the camera lens group can be effectively balanced. Preferably, 0.57 ≤ (R3 - R4) / R5 ≤ 1.13.

[0084] In this embodiment, the curvature radius R11 of the object side of the sixth lens and the effective focal length f of the camera lens group satisfy: -8 < R11 / f < 0; the effective focal length f of the camera lens group and the curvature radius R14 of the image side of the seventh lens satisfy: 0 < f / R14 < 8. By restricting R11 / f and f / R14 within a reasonable range, it is beneficial for the camera lens group to better match the chip CRA (chief ray angle), improving the illuminance. As the last two lenses, the sixth lens and the seventh lens with reasonable surface profiles can effectively reduce the surface profile sensitivity, and at the same time can elongate the back focal length, giving higher processing freedom in the module manufacturing process. Preferably, -5.10 ≤ R11 / f ≤ -2.16; 3.27 ≤ f / R14 ≤ 5.33.

[0085] In this embodiment, the central thickness CT6 of the sixth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, the central thickness CT1 of the first lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy: 1 < (CT6 + CT7) / (CT1 - CT2) < 2. By restricting (CT6 + CT7) / (CT1 - CT2) within a reasonable range, good processability of the lenses can be maintained, as well as a reasonable arrangement within the system. Preferably, 1.24 ≤ (CT6 + CT7) / (CT1 - CT2) ≤ 1.85.

[0086] In this embodiment, the Abbe number V1 of the first lens, the Abbe number V2 of the second lens, and the Abbe number V3 of the third lens satisfy: 4 < (V1 + V3) / V2 < 6. By restricting (V1 + V3) / V2 within a reasonable range, the large Abbe number differences between the first lens, the third lens and the second lens can balance the lateral chromatic aberration between the lenses, obtaining better imaging quality. Preferably, (V1 + V3) / V2 = 5.50.

[0087] In this embodiment, the Abbe number V5 of the fifth lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy: 0 < (V5 + V6) / V7 < 1. By restricting (V5 + V6) / V7 within a reasonable range, the reasonable Abbe number distribution among the fifth lens, the sixth lens and the seventh lens can balance the lateral chromatic aberration between the lenses, obtaining better imaging quality. Preferably, (V5 + V6) / V7 = 0.85.

[0088] In this embodiment, the maximum value Nmax of the refractive indices of the seven lenses is less than 1.7. Controlling the refractive index of the lenses within a certain range can control the cost and obtain greater imaging benefits at a lower cost.

[0089] In this embodiment, the axial distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens, the axial distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, the central thickness CT6 of the sixth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis satisfy: -4 < SAG62 / CT6 + SAG72 / CT7 < -1. By restricting SAG62 / CT6 + SAG72 / CT7 within a reasonable range, it is possible to prevent the sixth and seventh lenses from being overly curved, reduce the processing difficulty, and at the same time endow the camera lens group with a better ability to balance chromatic aberration and distortion. Preferably, -2.28 ≤ SAG62 / CT6 + SAG72 / CT7 ≤ -1.80.

[0090] In this embodiment, the effective focal length f of the camera lens group and the curvature radius R11 of the object side surface of the sixth lens satisfy: -8 < R11 / f < 0; the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: R11 / R12 > 0; the curvature radius R13 of the object side surface of the seventh lens and the curvature radius R14 of the image side surface of the seventh lens satisfy: R14 / R13 > 0. By controlling the signs of the curvature radii of the object side and the image side of the sixth and seventh lenses to be the same, the lens can have a greater optical power, and the light rays can have a smaller deflection angle between the sixth and seventh lenses. Controlling R11 / f within a certain range can reduce the size of optical distortion and ensure better imaging quality. Preferably, -5.10 ≤ R11 / f ≤ -2.16; 1.02 ≤ R11 / R12 ≤ 2.21; 0.89 ≤ R14 / R13 ≤ 0.92.

[0091] In this embodiment, the Abbe number V6 of the sixth lens and the Abbe number V7 of the seventh lens satisfy: (V7 - V6) / V6 > 0.6. By restricting (V7 - V6) / V6 within a reasonable range, the chromatic aberration of the system can be effectively corrected, making the imaging effect clearer and the imaging quality better. Preferably, (V7 - V6) / V6 = 1.16.

[0092] Optionally, the above camera lens group may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0093] The camera lens assembly in this application may use multiple lenses, such as the seven lenses mentioned above. By rationally allocating the optical power, surface shape, center thickness of each lens, and the on-axis distance between each lens, the aperture of the camera lens assembly can be effectively increased, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, making the camera lens assembly more conducive to production and processing and applicable to portable electronic devices such as smartphones. The above-mentioned camera lens assembly also has the advantages of a large aperture and a large field of view. It is ultra-thin and has excellent imaging quality, which can meet the needs of miniaturization of smart electronic products.

[0094] In this application, at least one of the lens surfaces is an aspheric surface. Aspheric lenses are characterized by a continuously varying curvature from the center to the periphery. Unlike spherical lenses, which have a constant curvature from the center to the periphery, aspheric lenses have a more optimized curvature radius, offering advantages in reducing distortion and astigmatism. The use of aspheric lenses minimizes aberrations that occur during imaging, thereby improving image quality.

[0095] However, those skilled in the art will appreciate that the number of lenses comprising the camera lens assembly can be varied to achieve the various results and advantages described herein without departing from the technical solutions claimed herein. For example, while the embodiments describe seven lenses as an example, the camera lens assembly is not limited to seven lenses. If desired, the camera lens assembly can also include other numbers of lenses.

[0096] The following further describes examples of specific surface shapes and parameters of the camera lens assembly applicable to the above-mentioned embodiment with reference to the accompanying drawings.

[0097] It should be noted that any one of the following examples 1 to 6 is applicable to all embodiments of the present application.

[0098] Example 1

[0099] like Figures 1 to 5 As shown, the camera lens group of Example 1 of the present application is described. Figure 1 The figure shows a schematic structural diagram of the camera lens assembly of Example 1.

[0100] like Figure 1 As shown, the camera lens group includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0101] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0102] Table 1 shows the basic structural parameters of the camera lens assembly of Example 1, wherein the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0103] Face number Surface type Radius of curvature thickness Refractive index Abbe number Cone coefficient OBJ spherical surface endless endless STO spherical surface endless -0.9096 S1 Aspheric 2.9982 1.3535 1.55 56.02 0.0001 S2 Aspheric 5.8561 0.0366 -0.0291 S3 Aspheric 5.5842 0.2989 1.67 20.38 -0.0208 S4 Aspheric 3.5477 0.3763 0.0066 S5 Aspheric 3.5835 0.6084 1.55 56.02 0.0017 S6 Aspheric 4.0985 0.1920 -0.0015 S7 Aspheric 3.8859 0.3690 1.55 56.02 -0.0113 S8 Aspheric 6.6182 0.9274 0.1675 S9 Aspheric -8.8184 0.5040 1.66 21.53 -49.3737 S10 Aspheric -28.7201 0.1481 -98.9030 S11 Aspheric -17.9605 0.7696 1.62 25.80 -87.8234 S12 Aspheric -10.7912 0.0720 -24.9273 S13 Aspheric 1.6923 0.5407 1.54 55.71 -9.6040 S14 Aspheric 1.5629 1.1905 -6.1030 S15 spherical surface endless 0.1650 1.52 64.20 S16 spherical surface endless 1.9214

[0104] Table 1

[0105] In Example 1, the object-side surface and the image-side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces. The surface shape of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0106]

[0107] Where x is the distance vector from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; and Ai is the correction coefficient for the i-th order of the aspheric surface. Table 2 below lists the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 that can be used for each aspheric mirror surface S1-S14 in Example 1.

[0108]

[0109]

[0110] Table 2

[0111] Figure 2The axial chromatic aberration curve of the camera lens assembly of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 3 The astigmatism curve of the camera lens set of Example 1 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 4 The distortion curve of the camera lens assembly of Example 1 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 5 The chromatic aberration curve of the camera lens assembly of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens assembly.

[0112] according to Figures 2 to 5 It can be seen that the camera lens set given in Example 1 can achieve good imaging quality.

[0113] Example 2

[0114] like Figures 6 to 10 As shown, the camera lens group of Example 2 of this application is described. Figure 6 The following is a schematic diagram of the structure of the camera lens assembly of Example 2. For the sake of brevity, some descriptions similar to Example 1 will be omitted.

[0115] like Figure 6 As shown, the camera lens group includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0116] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0117] Table 3 shows the basic structural parameters of the camera lens assembly of Example 2, wherein the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0118] Face number Surface type Radius of curvature thickness Refractive index Abbe number Cone coefficient OBJ spherical surface endless endless STO spherical surface endless -0.9013 S1 Aspheric 3.0060 1.3380 1.55 56.02 -0.0007 S2 Aspheric 6.0817 0.0796 -0.0840 S3 Aspheric 5.9426 0.2760 1.67 20.38 -0.1173 S4 Aspheric 3.7280 0.3146 -0.0257 S5 Aspheric 3.6195 0.5836 1.55 56.02 0.0245 S6 Aspheric 4.3765 0.1588 0.0108 S7 Aspheric 4.2136 0.3923 1.55 56.02 -0.0249 S8 Aspheric 6.9617 0.9924 0.2840 S9 Aspheric -15.9807 0.5636 1.66 21.53 -66.7389 S10 Aspheric 89.1539 0.1663 60.4292 S11 Aspheric -41.3279 0.8015 1.62 25.80 48.7946 S12 Aspheric -18.6586 0.0933 -14.5853 S13 Aspheric 2.0290 0.6854 1.54 55.71 -9.6066 S14 Aspheric 1.8473 0.9355 -5.8881 S15 spherical surface endless 0.1650 1.52 64.20 S16 spherical surface endless 1.6909

[0119] Table 3

[0120] Table 4 shows the high-order coefficients of the aspheric mirror surfaces S1-S14 that can be used in Example 2. The surface shape of each aspheric lens can be defined using, but not limited to, formula (1) in Example 1.

[0121]

[0122]

[0123] Table 4

[0124] Figure 7 The axial chromatic aberration curve of the camera lens assembly of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 8 The astigmatism curve of the camera lens set of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 9 The distortion curve of the camera lens assembly of Example 2 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 10 The chromatic aberration curve of the camera lens assembly of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens assembly.

[0125] according to Figures 7 to 10 It can be seen that the camera lens assembly given in Example 2 can achieve good imaging quality.

[0126] Example 3

[0127] like Figures 11 to 15 As shown, the camera lens group of Example 3 of this application is described. Figure 11 The following is a schematic diagram of the structure of the camera lens assembly of Example 3. For the sake of brevity, some descriptions similar to Example 1 will be omitted.

[0128] like Figure 11 As shown, the camera lens group includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0129] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0130] Table 5 shows the basic structural parameters of the camera lens assembly of Example 3, wherein the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0131] Face number Surface type Radius of curvature thickness Refractive index Abbe number Cone coefficient OBJ spherical surface endless endless STO spherical surface endless -0.8896 S1 Aspheric 3.0461 1.3370 1.55 56.02 -0.0041 S2 Aspheric 6.9899 0.1234 -0.0450 S3 Aspheric 6.7955 0.3198 1.67 20.38 -0.3355 S4 Aspheric 4.0264 0.3495 -0.0875 S5 Aspheric 4.1442 0.7648 1.55 56.02 0.0377 S6 Aspheric 10.3728 0.1653 -1.1410 S7 Aspheric 50.0000 0.2200 1.55 56.02 99.0000 S8 Aspheric 28.2738 0.9402 7.5385 S9 Aspheric -16.5729 0.6556 1.66 21.53 -74.0965 S10 Aspheric 140.0123 0.1776 -99.0000 S11 Aspheric -37.0892 0.8566 1.62 25.80 92.2021 S12 Aspheric -20.1524 0.0363 -0.8452 S13 Aspheric 2.0674 0.7366 1.54 55.71 -9.9561 S14 Aspheric 1.8349 0.9313 -6.0473 S15 spherical surface endless 0.1650 1.52 64.20 S16 spherical surface endless 1.6867

[0132] Table 5

[0133] Table 6 shows the high-order coefficients of the aspheric mirror surfaces S1-S14 that can be used in Example 3. The surface shape of each aspheric lens can be defined using, but not limited to, formula (1) in Example 1.

[0134]

[0135]

[0136] Table 6

[0137] Figure 12 The axial chromatic aberration curve of the camera lens assembly of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 13 The astigmatism curve of the camera lens set of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14 The distortion curve of the camera lens set of Example 3 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 15 The magnification chromatic aberration curve of the camera lens assembly of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens assembly.

[0138] according to Figures 12 to 15 It can be seen that the camera lens assembly given in Example 3 can achieve good imaging quality.

[0139] Example 4

[0140] like Figures 16 to 20 As shown, the camera lens group of Example 4 of the present application is described. Figure 16 The structure diagram of the camera lens assembly of Example 4 is shown. For the sake of brevity, some descriptions similar to Example 1 will be omitted.

[0141] like Figure 16 As shown, the camera lens group includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0142] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0143] Table 7 shows the basic structural parameters of the camera lens assembly of Example 4, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0144] Face number Surface type Radius of curvature thickness Refractive index Abbe number Cone coefficient OBJ spherical surface endless endless STO spherical surface endless -0.8726 S1 Aspheric 3.0912 1.4317 1.55 56.02 -0.0204 S2 Aspheric 9.2207 0.1805 0.1552 S3 Aspheric 10.9861 0.3305 1.67 20.38 -0.9711 S4 Aspheric 5.0484 0.3529 -0.3398 S5 Aspheric 5.2504 0.7897 1.55 56.02 0.0801 S6 Aspheric -200.0000 0.0583 99.0000 S7 Aspheric 40.1453 0.3714 1.55 56.02 98.4503 S8 Aspheric 8.5653 0.7880 0.4123 S9 Aspheric -18.9415 0.6245 1.66 21.53 -99.0000 S10 Aspheric 189.5978 0.1622 -99.0000 S11 Aspheric -36.3318 0.8173 1.62 25.80 89.8178 S12 Aspheric -23.0479 0.0300 -50.1433 S13 Aspheric 1.8782 0.7317 1.54 55.71 -9.3629 S14 Aspheric 1.6986 0.8473 -5.4157 S15 spherical surface endless 0.1650 1.52 64.20 S16 spherical surface endless 1.6028

[0145] Table 7

[0146] Table 8 shows the high-order coefficients of the aspheric mirror surfaces S1-S14 that can be used in Example 4. The surface shape of each aspheric lens can be defined using, but not limited to, formula (1) in Example 1.

[0147]

[0148]

[0149] Table 8

[0150] Figure 17 The axial chromatic aberration curve of the camera lens assembly of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 18 The astigmatism curve of the imaging lens set of Example 4 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 19 The distortion curve of the camera lens set of Example 4 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 20 The chromatic aberration curve of the camera lens assembly of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens assembly.

[0151] according to Figures 17 to 20 It can be seen that the camera lens assembly given in Example 4 can achieve good imaging quality.

[0152] Example 5

[0153] like Figures 21 to 25 As shown, the camera lens group of Example 5 of the present application is described. Figure 21 FIG2 shows a schematic structural diagram of the camera lens assembly of Example 5. For the sake of brevity, some descriptions similar to Example 1 will be omitted.

[0154] like Figure 21 As shown, the camera lens group includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0155] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0156] Table 9 shows the basic structural parameters of the camera lens assembly of Example 5, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0157]

[0158]

[0159] Table 9

[0160] Table 10 shows the high-order coefficients of the aspheric mirror surfaces S1-S14 that can be used in Example 5. The surface shape of each aspheric lens can be defined using, but not limited to, formula (1) in Example 1.

[0161]

[0162]

[0163] Table 10

[0164] Figure 22 The axial chromatic aberration curve of the camera lens assembly of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 23 The astigmatism curve of the imaging lens set of Example 5 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 24 The distortion curve of the camera lens set of Example 5 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 25 The chromatic aberration curve of the camera lens assembly of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens assembly.

[0165] according to Figures 22 to 25 It can be seen that the camera lens assembly given in Example 5 can achieve good imaging quality.

[0166] Example 6

[0167] like Figures 26 to 30 As shown, the camera lens group of Example 6 of this application is described. Figure 26 FIG2 shows a schematic structural diagram of the camera lens assembly of Example 6. For the sake of brevity, some descriptions similar to Example 1 will be omitted.

[0168] like Figure 26 As shown, the camera lens group includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0169] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0170] Table 11 shows the basic structural parameters of the camera lens assembly of Example 6, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0171]

[0172]

[0173] Table 11

[0174] Table 12 shows the high-order coefficients of the aspheric mirror surfaces S1-S14 that can be used in Example 6. The surface shape of each aspheric lens can be defined using, but not limited to, formula (1) in Example 1.

[0175]

[0176]

[0177] Table 12

[0178] Figure 27 The axial chromatic aberration curve of the camera lens assembly of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 28 The astigmatism curve of the imaging lens set of Example 6 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 29 The distortion curve of the camera lens set of Example 6 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 30 The chromatic aberration curve of the camera lens assembly of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens assembly.

[0179] according to Figures 27 to 30 It can be seen that the camera lens assembly given in Example 6 can achieve good imaging quality.

[0180] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0181] Conditional / Example 1 2 3 4 5 6 TAN(Semi-FOV)*f 5.30 5.33 5.29 5.30 5.29 5.27 R11 / f -2.16 -5.10 -4.51 -4.64 -3.18 -2.67 f / R14 5.33 4.38 4.49 4.61 4.29 3.27 (R2+R1) / (R2-R1) 3.10 2.95 2.54 2.01 2.90 2.74 f / f6+f / f7 0.30 0.22 0.15 0.18 0.20 0.02 f5 / R9 2.22 1.29 1.36 1.38 1.83 1.99 R7 / f 0.47 0.52 6.07 5.12 0.45 0.35 SL / TTL 0.90 0.90 0.91 0.91 0.89 0.89 (T23-T12) / T34 1.77 1.48 1.37 2.96 1.22 1.20 f5 / f -2.35 -2.55 -2.74 -3.35 -2.26 -2.34 T67 / T56 0.49 0.56 0.20 0.18 1.35 0.52 T45 / (CT5-CT4) 6.87 5.79 2.16 3.11 2.57 1.42 TTL / ∑AT 5.41 5.12 5.28 5.91 5.15 5.79 (R3-R4) / R5 0.57 0.61 0.67 1.13 0.67 0.70 (CT6+CT7) / (CT1-CT2) 1.24 1.40 1.57 1.41 1.36 1.85 (V1+V3) / V2 5.50 5.50 5.50 5.50 5.50 5.50 (V5+V6) / V7 0.85 0.85 0.85 0.85 0.85 0.85 SAG62 / CT6+SAG72 / CT7 -2.28 -2.12 -1.86 -1.80 -2.18 -1.94 R11 / f -2.16 -5.10 -4.51 -4.64 -3.18 -2.67 R11 / R12 1.66 2.21 1.84 1.58 1.95 1.02 R14 / R13 0.92 0.91 0.89 0.90 0.89 0.89 (CT1-CT4) / CT7 1.82 1.38 1.52 1.45 1.23 1.03 (V7-V6) / V6 1.16 1.16 1.16 1.16 1.16 1.16

[0182] Table 13

[0183] Table 14 shows the effective focal lengths f1 to f7 of the lenses of the camera lens groups of Examples 1 to 6, where Fno represents the F number of the camera lens group, that is, f / EPD, and ImgH represents the image height.

[0184]

[0185]

[0186] Table 14

[0187] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the camera lens assembly described above.

[0188] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0189] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0190] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0191] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A camera lens assembly, characterized in that: The camera lens assembly has only seven lenses, which include, from the object side to the image side, the following lenses: a first lens having positive optical power, an object-side surface of the first lens being convex, and an image-side surface of the first lens being concave; a second lens having negative optical power, an object-side surface of the second lens being convex, and an image-side surface of the second lens being concave; a third lens, wherein the object-side surface of the third lens is a convex surface; a fourth lens having an object-side surface that is convex and an image-side surface that is concave; a fifth lens having negative optical power and a concave object-side surface; a sixth lens having positive refractive power, an object-side surface of the sixth lens being concave, and an image-side surface of the sixth lens being convex; a seventh lens having positive refractive power, an object-side surface of the seventh lens being convex, and an image-side surface of the seventh lens being concave; wherein at least one of the third lens and the fourth lens has positive optical power; Half of the maximum field of view angle Semi-FOV of the camera lens group and the effective focal length f of the camera lens group satisfy the following conditions: 5.33mm≥TAN(Semi-FOV)*f>4mm; The center thickness CT1 of the first lens on the optical axis of the camera lens assembly, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy the following: 1.03≤(CT1-CT4) / CT7≤1.

82.

2. The camera lens assembly according to claim 1, wherein: The effective focal length f of the camera lens group, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy the following: 0.02≤f / f6+f / f7≤0.

30.

3. The camera lens assembly according to claim 1, wherein: An effective focal length f5 of the fifth lens and a curvature radius R9 of the object-side surface of the fifth lens satisfy the following relationship: 1.29≤f5 / R9≤2.

22.

4. The camera lens assembly according to claim 1, wherein: The effective focal length f of the camera lens group and the curvature radius R7 of the object side surface of the fourth lens satisfy the following relationship: 0.35≤R7 / f≤6.

07.

5. The camera lens assembly according to claim 1, wherein: The air gap T23 between the second lens and the third lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy the following: 1.20≤(T23-T12) / T34≤2.96; the effective focal length f of the camera lens group and the effective focal length f5 of the fifth lens satisfy the following: -3.35≤f5 / f≤-2.

26.

6. The camera lens assembly according to claim 1, wherein: An air interval T67 between the sixth lens and the seventh lens on the optical axis and an air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy the following: 0.18≤T67 / T56≤1.

35.

7. The camera lens assembly according to claim 1, wherein: An axial distance SL from the aperture of the camera lens group to the imaging plane of the camera lens group and an axial distance TTL from the object side surface of the first lens to the imaging plane satisfy the following relationship: 0.89≤SL / TTL≤0.

91.

8. The camera lens assembly according to claim 1, wherein: An air interval T45 between the fourth lens and the fifth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, and a center thickness CT4 of the fourth lens on the optical axis satisfy the following relationship: 1.42≤T45 / (CT5-CT4)≤6.

87.

9. The camera lens assembly according to claim 1, wherein: An axial distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group and a sum ∑AT of the air spaces on the optical axis between the first lens and any two adjacent lenses having optical focal lengths among the lenses closest to the imaging surface satisfy the following conditions: 5.12≤TTL / ∑AT≤5.

91.

10. The camera lens assembly according to any one of claims 1 to 9, characterized in that: A curvature radius R3 of the object-side surface of the second lens, a curvature radius R4 of the image-side surface of the second lens, and a curvature radius R5 of the object-side surface of the third lens satisfy the following relationship: 0.57≤(R3-R4) / R5≤1.

13.

11. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The curvature radius R11 of the object side surface of the sixth lens and the effective focal length f of the camera lens group satisfy the following relationship: -5.10≤R11 / f≤-2.16; the effective focal length f of the camera lens group and the curvature radius R14 of the image side surface of the seventh lens satisfy the following relationship: 3.27≤f / R14≤5.

33.

12. The camera lens assembly according to any one of claims 1 to 9, wherein: A center thickness CT6 of the sixth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, a center thickness CT1 of the first lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy the following relationship: 1.24≤(CT6+CT7) / (CT1-CT2)≤1.

85.

13. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The Abbe number V1 of the first lens, the Abbe number V2 of the second lens, and the Abbe number V3 of the third lens satisfy the following relationship: 4<(V1+V3) / V2≤5.

5.

14. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The Abbe number V5 of the fifth lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy the following relationship: 0<(V5+V6) / V7≤0.

85.

15. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The maximum refractive index Nmax of the seven lenses is less than 1.

7.

16. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the effective radius vertex of the image side surface of the sixth lens, the on-axis distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis and the effective radius vertex of the image side surface of the seventh lens, the center thickness CT6 of the sixth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy the following: -2.28≤SAG62 / CT6+SAG72 / CT7≤-1.

80.

17. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The effective focal length f of the camera lens group and the curvature radius R11 of the object side surface of the sixth lens satisfy the following relationship: -5.10≤R11 / f≤-2.16; the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy the following relationship: 1.02≤R11 / R12≤2.21; the curvature radius R13 of the object side surface of the seventh lens and the curvature radius R14 of the image side surface of the seventh lens satisfy the following relationship: 0.89≤R14 / R13≤0.

92.

18. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy: 1.7≤f / EPD<2; the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: 2.01≤(R2+R1) / (R2-R1)≤3.

10.

19. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The Abbe number V6 of the sixth lens element and the Abbe number V7 of the seventh lens element satisfy the following: 1.16≥(V7-V6) / V6>0.

6.

20. A camera lens assembly, characterized in that: The camera lens assembly has only seven lenses, which include, from the object side to the image side, the following lenses: a first lens having positive optical power, an object-side surface of the first lens being convex, and an image-side surface of the first lens being concave; a second lens having negative optical power, an object-side surface of the second lens being convex, and an image-side surface of the second lens being concave; a third lens, wherein the object-side surface of the third lens is a convex surface; a fourth lens having an object-side surface that is convex and an image-side surface that is concave; a fifth lens having negative optical power and a concave object-side surface; a sixth lens having positive refractive power, an object-side surface of the sixth lens being concave, and an image-side surface of the sixth lens being convex; a seventh lens having positive refractive power, an object-side surface of the seventh lens being convex, and an image-side surface of the seventh lens being concave; wherein at least one of the third lens and the fourth lens has positive optical power; The effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy the following: 1.7≤f / EPD<2; A curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens satisfy the following relationship: 2.01≤(R2+R1) / (R2-R1)≤3.10; The center thickness CT1 of the first lens on the optical axis of the camera lens assembly, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy the following: 1.03≤(CT1-CT4) / CT7≤1.

82.

21. The camera lens assembly according to claim 20, wherein: The effective focal length f of the camera lens group, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy the following: 0.02≤f / f6+f / f7≤0.

30.

22. The camera lens assembly according to claim 20, wherein: An effective focal length f5 of the fifth lens and a curvature radius R9 of the object-side surface of the fifth lens satisfy the following relationship: 1.29≤f5 / R9≤2.

22.

23. The camera lens assembly according to claim 20, wherein: The effective focal length f of the camera lens group and the curvature radius R7 of the object side surface of the fourth lens satisfy the following relationship: 0.35≤R7 / f≤6.

07.

24. The camera lens assembly according to claim 20, wherein: The air gap T23 between the second lens and the third lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy the following: 1.20≤(T23-T12) / T34≤2.96; the effective focal length f of the camera lens group and the effective focal length f5 of the fifth lens satisfy the following: -3.35≤f5 / f≤-2.

26.

25. The camera lens assembly according to claim 20, wherein: An air interval T67 between the sixth lens and the seventh lens on the optical axis and an air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy the following: 0.18≤T67 / T56≤1.

35.

26. The camera lens assembly according to claim 20, wherein: An axial distance SL from the aperture of the camera lens group to the imaging plane of the camera lens group and an axial distance TTL from the object side surface of the first lens to the imaging plane satisfy the following relationship: 0.89≤SL / TTL≤0.

91.

27. The camera lens assembly according to claim 20, wherein: An air interval T45 between the fourth lens and the fifth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, and a center thickness CT4 of the fourth lens on the optical axis satisfy the following relationship: 1.42≤T45 / (CT5-CT4)≤6.

87.

28. The camera lens assembly according to claim 20, wherein: An axial distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group and a sum ∑AT of the air spaces between the first lens and any two adjacent lenses with optical power among the lenses closest to the imaging surface on the optical axis of the camera lens group satisfy the following conditions: 5.12≤TTL / ∑AT≤5.

91.

29. The camera lens assembly according to any one of claims 20 to 28, wherein: A curvature radius R3 of the object-side surface of the second lens, a curvature radius R4 of the image-side surface of the second lens, and a curvature radius R5 of the object-side surface of the third lens satisfy the following relationship: 0.57≤(R3-R4) / R5≤1.

13.

30. The camera lens assembly according to any one of claims 20 to 28, wherein: The curvature radius R11 of the object side surface of the sixth lens and the effective focal length f of the camera lens group satisfy the following relationship: -5.10≤R11 / f≤-2.16; the effective focal length f of the camera lens group and the curvature radius R14 of the image side surface of the seventh lens satisfy the following relationship: 3.27≤f / R14≤5.

33.

31. The camera lens assembly according to any one of claims 20 to 28, wherein: A center thickness CT6 of the sixth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, a center thickness CT1 of the first lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy the following relationship: 1.24≤(CT6+CT7) / (CT1-CT2)≤1.

85.

32. The camera lens assembly according to any one of claims 20 to 28, wherein: The Abbe number V1 of the first lens, the Abbe number V2 of the second lens, and the Abbe number V3 of the third lens satisfy the following relationship: 4<(V1+V3) / V2≤5.

5.

33. The camera lens assembly according to any one of claims 20 to 28, wherein: The Abbe number V5 of the fifth lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy the following relationship: 0<(V5+V6) / V7≤0.

85.

34. The camera lens assembly according to any one of claims 20 to 28, wherein: The maximum refractive index Nmax of the seven lenses is less than 1.

7.

35. The camera lens assembly according to any one of claims 20 to 28, wherein: The on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the effective radius vertex of the image side surface of the sixth lens, the on-axis distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis and the effective radius vertex of the image side surface of the seventh lens, the center thickness CT6 of the sixth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis satisfy the following: -2.28≤SAG62 / CT6+SAG72 / CT7≤-1.

80.

36. The camera lens assembly according to any one of claims 20 to 28, wherein: The effective focal length f of the camera lens group and the curvature radius R11 of the object side surface of the sixth lens satisfy the following: -5.10≤R11 / f≤-2.16; the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy the following: 1.02≤R11 / R12≤2.21; the curvature radius R13 of the object side surface of the seventh lens and the curvature radius R14 of the image side surface of the seventh lens satisfy the following: 0.89≤R14 / R13≤0.

92.

37. The camera lens assembly according to any one of claims 20 to 28, wherein: The Abbe number V6 of the sixth lens element and the Abbe number V7 of the seventh lens element satisfy the following: 1.16≥(V7-V6) / V6>0.6.

Images