Camera lens

Abstract

The present invention provides a camera lens. The camera lens only has seven lenses, and the seven lenses include: a first lens with a positive optical power; a second lens with a negative optical power; a third lens with a positive optical power, and the image side of the third lens is convex; a fourth lens with a negative optical power; a fifth lens with a negative optical power; a sixth lens with a positive optical power; a seventh lens with a negative optical power, and the image side of the seventh lens is concave; at least four meniscus lenses with convex object sides are included among the first lens to the seventh lens; wherein, half of the diagonal length of the effective pixel area on the imaging surface of the camera lens ImgH, the aperture value fno of the camera lens, and the effective radius DT11 of the object side of the first lens satisfy: 6.5 < ImgH * fno / DT11 < 7.5. The present invention solves the problem that a large image surface and a large aperture cannot be兼顾 in the prior art camera lens. It should be noted that the word "兼顾" in the original text may be a misspelling. It is guessed that it may be "兼顾", which means "take both into account" in English. If this is not what you want, please provide more accurate information.

Description

Technical Field

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

[0002] With the development of mobile phone chips, users' requirements for mobile phone camera lenses are also increasing. They demand high pixels and a large image area. Generally speaking, the larger the pixels, the larger the image area, which makes traditional camera lenses increasingly bulky, making them difficult to match with lightweight electronic products such as mobile phones, thus limiting the promotion and application of camera lenses. However, when reducing the size of camera lenses, it is difficult to maintain the characteristics of a large image area, and it is also difficult to maintain good imaging capabilities in poor lighting conditions, which compresses the image quality of camera lenses and fails to meet users' camera needs. In addition, the increase in the number of lenses in a camera lens greatly increases the difficulty of controlling light, resulting in large and difficult to balance aberrations. It requires the surface shape and optical power of each lens to be coordinated, and the processing and molding requirements of the lenses are also high.

[0003] That is to say, the existing camera lens has the problem that it cannot take into account both a large image surface and a large aperture. Summary of the Invention

[0004] The main purpose of the present invention is to provide a camera lens to solve the problem in the prior art that a large image surface and a large aperture cannot be taken into account at the same time.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a camera lens, which has only seven lenses, and the seven lenses include: a first lens, the first lens has positive focal power; a second lens, the second lens has negative focal power; a third lens, the third lens has positive focal power, and the image side surface of the third lens is convex; a fourth lens, the fourth lens has negative focal power; a fifth lens, the fifth lens has negative focal power; a sixth lens, the sixth lens has positive focal power; a seventh lens, the seventh lens has negative focal power, and the image side surface of the seventh lens is concave; the first lens to the seventh lens include at least four meniscus lenses with convex object side surfaces; wherein, half the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens, the aperture value fno of the camera lens, and the effective radius DT11 of the object side surface of the first lens satisfy the following conditions: 6.5 <ImgH*fno / DT11<7.5。

[0006] Furthermore, half the diagonal length of the effective pixel area on the imaging plane of the camera lens ImgH, the aperture value fno of the camera lens, and the effective radius DT11 of the object side surface of the first lens satisfy the following relationship: 6.73≤ImgH*fno / DT11≤7.39.

[0007] Furthermore, the on-axis distance TTL from the object side of the first lens to the imaging surface, the maximum half field angle Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy the following conditions: <TTL*TAN(Semi-FOV) / (f-f1)<11。

[0008] Furthermore, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the maximum half field of view Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy the following relationship: 8.70≤TTL*TAN(Semi-FOV) / (f-f1)≤10.08.

[0009] Furthermore, the entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 1 <EPD / (f56-f6)<3。

[0010] Furthermore, the entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following relationship: 1.71≤EPD / (f56-f6)≤2.82.

[0011] Furthermore, the camera lens also includes an aperture, which is located between the second lens and the third lens, and the on-axis distance TD from the object side of the first lens to the image side of the seventh lens, the on-axis distance SD from the aperture to the image side of the seventh lens, and the sum of the edge thicknesses ∑ET of the first lens to the seventh lens satisfy: 1.4<∑ET / (TD-SD)<2.

[0012] Furthermore, the camera lens also includes an aperture, which is located between the second lens and the third lens, and the on-axis distance TD from the object side surface of the first lens to the image side surface of the seventh lens, the on-axis distance SD from the aperture to the image side surface of the seventh lens, and the sum of the edge thicknesses ∑ET of the first lens to the seventh lens satisfy the following conditions: 1.49≤∑ET / (TD-SD)≤1.76.

[0013] Furthermore, an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, an edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following relationship: 0.4<(ET1+ET3+ET5) / (ET2+ET4+ET6+ET7)<0.6.

[0014] Furthermore, an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, an edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following relationship: 0.46≤(ET1+ET3+ET5) / (ET2+ET4+ET6+ET7)≤0.55.

[0015] Furthermore, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy: 0<(SAG62-SAG61) / (SAG62+SAG61)<0.2.

[0016] Furthermore, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following conditions: 0.03≤(SAG62-SAG61) / (SAG62+SAG61)≤0.17.

[0017] Furthermore, the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the second lens, the on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, and the on-axis distance SAG32 between the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens satisfy the following: -1.5<(SAG21+SAG22) / (SAG31+SAG32)<-0.5.

[0018] Furthermore, the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the second lens, the on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, and the on-axis distance SAG32 between the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens satisfy the following: -1.12≤(SAG21+SAG22) / (SAG31+SAG32)≤-0.89.

[0019] Furthermore, the effective focal length f2 of the second lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy the following relationship: -2 <f2 / (R3-R4)<-1.5。

[0020] Furthermore, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens satisfy the following relationship: -1.96≤f2 / (R3-R4)≤-1.64.

[0021] Furthermore, the curvature radius R1 of the object side surface of the first lens, the curvature radius R4 of the image side surface of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy the following relationship: 1.5 <f12 / (R4-R1)<2。

[0022] Furthermore, a curvature radius R1 of the object-side surface of the first lens, a curvature radius R4 of the image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens satisfy the following relationship: 1.54≤f12 / (R4-R1)≤1.83.

[0023] Furthermore, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy the following relationship: 1.2<(R11+R12) / (R12-R11)<1.3.

[0024] Furthermore, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy the following relationship: 1.22≤(R11+R12) / (R12-R11)≤1.25.

[0025] Furthermore, the sum of the air intervals ΣAT between any two adjacent lenses on the optical axis from the first lens to the seventh lens and the sum of the edge thicknesses ΣET of the first lens to the seventh lens satisfy the following relationship: 0.8<ΣAT / ΣET<1.1.

[0026] Furthermore, the sum of the air intervals ΣAT between any two adjacent lenses on the optical axis among the first to seventh lenses and the sum of the edge thicknesses ΣET of the first to seventh lenses satisfy the following relationship: 0.88≤ΣAT / ΣET≤1.03.

[0027] Furthermore, the sum of the air intervals ∑AT between any two adjacent lenses on the optical axis among the first to seventh lenses, the on-axis distance T45 between the image side surface of the fourth lens and the object side surface of the fifth lens, and the on-axis distance T67 between the image side surface of the sixth lens and the object side surface of the seventh lens satisfy the following relationship: 0.5<(T45+T67) / ∑AT<0.6.

[0028] Furthermore, the sum of the air intervals ∑AT between any two adjacent lenses on the optical axis among the first to seventh lenses, the on-axis distance T45 between the image-side surface of the fourth lens and the object-side surface of the fifth lens, and the on-axis distance T67 between the image-side surface of the sixth lens and the object-side surface of the seventh lens satisfy the following: 0.55≤(T45+T67) / ∑AT≤0.57.

[0029] Furthermore, the sum of the center thicknesses of the first to seventh lenses on the optical axis ∑CT, the sum of the air intervals between any two adjacent lenses on the optical axis ∑AT, and the on-axis distance BFL from the image side surface to the imaging plane of the seventh lens satisfy the following conditions: 0.9 <BFL / (∑CT-∑AT)<1.3。

[0030] Furthermore, the sum ∑CT of the center thicknesses of the first to seventh lenses on the optical axis, the sum ∑AT of the air intervals between any two adjacent lenses on the optical axis, and the on-axis distance BFL between the image-side surface and the imaging plane of the seventh lens satisfy the following conditions: 1.00≤BFL / (∑CT-∑AT)≤1.21.

[0031] Furthermore, the effective radius DT21 of the object side surface of the second lens and the effective radius DT31 of the object side surface of the third lens satisfy: 1 <DT21 / DT31<1.2。

[0032] Furthermore, an effective radius DT21 of the object-side surface of the second lens and an effective radius DT31 of the object-side surface of the third lens satisfy the relationship: 1.09≤DT21 / DT31≤1.13.

[0033] Furthermore, the effective radius DT32 of the image side surface of the third lens, the effective radius DT42 of the image side surface of the fourth lens, and the effective radius DT52 of the image side surface of the fifth lens satisfy the following relationship: 2.5<(DT52-DT42) / (DT42-DT32)<4.

[0034] Furthermore, the effective radius DT32 of the image side surface of the third lens, the effective radius DT42 of the image side surface of the fourth lens, and the effective radius DT52 of the image side surface of the fifth lens satisfy the following relationship: 2.78≤(DT52-DT42) / (DT42-DT32)≤3.92.

[0035] Furthermore, the effective radius DT12 of the image side of the first lens, the effective radius DT72 of the image side of the seventh lens, half the diagonal length of the effective pixel area on the imaging surface ImgH and the maximum half field angle Semi-FOV of the camera lens meet the following conditions: 1.5 <ImgH*TAN(Semi-FOV) / (DT72-DT12)<2。

[0036] Furthermore, the effective radius DT12 of the image side surface of the first lens, the effective radius DT72 of the image side surface of the seventh lens, half the diagonal length of the effective pixel area on the imaging plane ImgH, and the maximum half field of view Semi-FOV of the camera lens satisfy the following relationship: 1.78≤ImgH*TAN(Semi-FOV) / (DT72-DT12)≤1.96.

[0037] According to another aspect of the present invention, a camera lens is provided, which has only seven lenses, and the seven lenses include: a first lens, the first lens has positive focal power; a second lens, the second lens has negative focal power; a third lens, the third lens has positive focal power, and the image side surface of the third lens is convex; a fourth lens, the fourth lens has negative focal power; a fifth lens, the fifth lens has negative focal power; a sixth lens, the sixth lens has positive focal power; a seventh lens, the seventh lens has negative focal power, and the image side surface of the seventh lens is concave; the first to seventh lenses include at least four meniscus lenses with convex object side surfaces; wherein the effective radius DT12 of the image side surface of the first lens, the effective radius DT72 of the image side surface of the seventh lens, half the diagonal length of the effective pixel area on the imaging surface ImgH and the maximum half field of view Semi-FOV of the camera lens satisfy the following relationship: 1.5 <ImgH*TAN(Semi-FOV) / (DT72-DT12)<2。

[0038] Furthermore, the effective radius DT12 of the image side surface of the first lens, the effective radius DT72 of the image side surface of the seventh lens, half the diagonal length of the effective pixel area on the imaging plane ImgH, and the maximum half field of view Semi-FOV of the camera lens satisfy the following relationship: 1.78≤ImgH*TAN(Semi-FOV) / (DT72-DT12)≤1.96.

[0039] Furthermore, the on-axis distance TTL from the object side of the first lens to the imaging surface, the maximum half field angle Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy the following conditions: <TTL*TAN(Semi-FOV) / (f-f1)<11。

[0040] Furthermore, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the maximum half field of view Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy the following relationship: 8.70≤TTL*TAN(Semi-FOV) / (f-f1)≤10.08.

[0041] Furthermore, the entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 1 <EPD / (f56-f6)<3。

[0042] Furthermore, the entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following relationship: 1.71≤EPD / (f56-f6)≤2.82.

[0043] Furthermore, the camera lens also includes an aperture, which is located between the second lens and the third lens, and the on-axis distance TD from the object side of the first lens to the image side of the seventh lens, the on-axis distance SD from the aperture to the image side of the seventh lens, and the sum of the edge thicknesses ∑ET of the first lens to the seventh lens satisfy: 1.4<∑ET / (TD-SD)<2.

[0044] Furthermore, the camera lens also includes an aperture, which is located between the second lens and the third lens, and the on-axis distance TD from the object side surface of the first lens to the image side surface of the seventh lens, the on-axis distance SD from the aperture to the image side surface of the seventh lens, and the sum of the edge thicknesses ∑ET of the first lens to the seventh lens satisfy the following conditions: 1.49≤∑ET / (TD-SD)≤1.76.

[0045] Furthermore, an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, an edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following relationship: 0.4<(ET1+ET3+ET5) / (ET2+ET4+ET6+ET7)<0.6.

[0046] Furthermore, an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, an edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following relationship: 0.46≤(ET1+ET3+ET5) / (ET2+ET4+ET6+ET7)≤0.55.

[0047] Furthermore, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy: 0<(SAG62-SAG61) / (SAG62+SAG61)<0.2.

[0048] Furthermore, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following conditions: 0.03≤(SAG62-SAG61) / (SAG62+SAG61)≤0.17.

[0049] Furthermore, the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the second lens, the on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, and the on-axis distance SAG32 between the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens satisfy the following: -1.5<(SAG21+SAG22) / (SAG31+SAG32)<-0.5.

[0050] Furthermore, the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the second lens, the on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, and the on-axis distance SAG32 between the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens satisfy the following: -1.12≤(SAG21+SAG22) / (SAG31+SAG32)≤-0.89.

[0051] Furthermore, the effective focal length f2 of the second lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy the following relationship: -2 <f2 / (R3-R4)<-1.5。

[0052] Furthermore, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens satisfy the following relationship: -1.96≤f2 / (R3-R4)≤-1.64.

[0053] Furthermore, the curvature radius R1 of the object side surface of the first lens, the curvature radius R4 of the image side surface of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy the following relationship: 1.5 <f12 / (R4-R1)<2。

[0054] Furthermore, a curvature radius R1 of the object-side surface of the first lens, a curvature radius R4 of the image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens satisfy the following relationship: 1.54≤f12 / (R4-R1)≤1.83.

[0055] Furthermore, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy the following relationship: 1.2<(R11+R12) / (R12-R11)<1.3.

[0056] Furthermore, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy the following relationship: 1.22≤(R11+R12) / (R12-R11)≤1.25.

[0057] Furthermore, the sum of the air intervals ΣAT between any two adjacent lenses on the optical axis from the first lens to the seventh lens and the sum of the edge thicknesses ΣET of the first lens to the seventh lens satisfy the following relationship: 0.8<ΣAT / ΣET<1.1.

[0058] Furthermore, the sum of the air intervals ΣAT between any two adjacent lenses on the optical axis among the first to seventh lenses and the sum of the edge thicknesses ΣET of the first to seventh lenses satisfy the following relationship: 0.88≤ΣAT / ΣET≤1.03.

[0059] Furthermore, the sum of the air intervals ∑AT between any two adjacent lenses on the optical axis among the first to seventh lenses, the on-axis distance T45 between the image side surface of the fourth lens and the object side surface of the fifth lens, and the on-axis distance T67 between the image side surface of the sixth lens and the object side surface of the seventh lens satisfy the following relationship: 0.5<(T45+T67) / ∑AT<0.6.

[0060] Furthermore, the sum of the air intervals ∑AT between any two adjacent lenses on the optical axis among the first to seventh lenses, the on-axis distance T45 between the image-side surface of the fourth lens and the object-side surface of the fifth lens, and the on-axis distance T67 between the image-side surface of the sixth lens and the object-side surface of the seventh lens satisfy the following: 0.55≤(T45+T67) / ∑AT≤0.57.

[0061] Furthermore, the sum of the center thicknesses of the first to seventh lenses on the optical axis ∑CT, the sum of the air intervals between any two adjacent lenses on the optical axis ∑AT, and the on-axis distance BFL from the image side surface to the imaging plane of the seventh lens satisfy the following conditions: 0.9 <BFL / (∑CT-∑AT)<1.3。

[0062] Furthermore, the sum ∑CT of the center thicknesses of the first to seventh lenses on the optical axis, the sum ∑AT of the air intervals between any two adjacent lenses on the optical axis, and the on-axis distance BFL between the image-side surface and the imaging plane of the seventh lens satisfy the following conditions: 1.00≤BFL / (∑CT-∑AT)≤1.21.

[0063] Furthermore, the effective radius DT21 of the object side surface of the second lens and the effective radius DT31 of the object side surface of the third lens satisfy: 1 <DT21 / DT31<1.2。

[0064] Furthermore, an effective radius DT21 of the object-side surface of the second lens and an effective radius DT31 of the object-side surface of the third lens satisfy the relationship: 1.09≤DT21 / DT31≤1.13.

[0065] Furthermore, the effective radius DT32 of the image side surface of the third lens, the effective radius DT42 of the image side surface of the fourth lens, and the effective radius DT52 of the image side surface of the fifth lens satisfy the following relationship: 2.5<(DT52-DT42) / (DT42-DT32)<4.

[0066] Furthermore, the effective radius DT32 of the image side surface of the third lens, the effective radius DT42 of the image side surface of the fourth lens, and the effective radius DT52 of the image side surface of the fifth lens satisfy the following relationship: 2.78≤(DT52-DT42) / (DT42-DT32)≤3.92.

[0067] According to the technical solution of the present invention, the camera lens has only seven lenses, which include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has positive focal power; the second lens has negative focal power; the third lens has positive focal power, and the image side surface of the third lens is convex; the fourth lens has negative focal power; the fifth lens has negative focal power; the sixth lens has positive focal power; the seventh lens has negative focal power, and the image side surface of the seventh lens is concave; the first lens to the seventh lens include at least four meniscus lenses with convex object side surfaces; wherein, half the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens, the aperture value fno of the camera lens, and the effective radius DT11 of the object side surface of the first lens satisfy the following conditions: 6.5 <ImgH*fno / DT11<7.5。

[0068] By rationally allocating the optical power of each lens, it is beneficial to correct the aberrations generated by the camera lens and improve the imaging quality of the camera lens. The first lens with positive optical power and the second lens with negative optical power have a good converging effect on light. In addition, the camera lens is equipped with a third lens with positive optical power and a convex image side surface, and a fourth lens with negative optical power, forming a double Gauss structure, which can effectively perform aberration elimination. At the same time, the camera lens is equipped with a fifth lens with negative optical power to increase the focal length and reduce the size of the camera lens. Combined with the sixth lens with positive optical power and the seventh lens with negative optical power and a concave image side surface, balanced correction of aberrations in the camera lens is achieved, improving image quality while meeting the camera function. The first to seventh lenses contain at least four meniscus lenses with convex object side surfaces, which can effectively improve the sensitivity of the camera lens. By controlling ImgH*fno / DT11 within a reasonable range, the camera lens can have a larger aperture while maintaining the large image surface characteristic of the camera lens, thereby improving the imaging capability of the camera lens in dark environments, broadening the scope of use of the camera lens, and improving the imaging quality of the camera lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] 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:

[0070] Figure 1 A schematic structural diagram of a camera lens according to Example 1 of the present invention is shown;

[0071] Figures 2 to 5 Shown respectively Figure 1 The axial chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve and distortion curve of the camera lens;

[0072] Figure 6 A schematic structural diagram of a camera lens according to Example 2 of the present invention is shown;

[0073] Figures 7 to 10 Shown respectively Figure 6 The axial chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve and distortion curve of the camera lens;

[0074] Figure 11 A schematic structural diagram of a camera lens according to Example 3 of the present invention is shown;

[0075] Figures 12 to 15 Shown respectively Figure 11 The axial chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve and distortion curve of the camera lens;

[0076] Figure 16Schematic diagram showing the structure of a camera lens according to Example 4 of the present invention;

[0077] Figures 17 to 20 Shown respectively Figure 16 The axial chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve and distortion curve of the camera lens;

[0078] Figure 21 A schematic structural diagram of a camera lens according to Example 5 of the present invention is shown;

[0079] Figures 22 to 25 Shown respectively Figure 21 The axial chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve and distortion curve of the camera lens in.

[0080] The above drawings include the following reference numerals:

[0081] 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

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] In this article, the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface 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 position of the concave surface 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 ordinary knowledge in this field, and the positive and negative R value (R refers to the radius of curvature 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. For 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; for 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.

[0088] In order to solve the problem in the prior art that a camera lens cannot have both a large image surface and a large aperture, the present invention provides a camera lens.

[0089] Example 1

[0090] like Figures 1 to 25 As shown, the camera lens has only seven lenses, which include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has positive focal power; the second lens has negative focal power; the third lens has positive focal power, and the image side surface of the third lens is convex; the fourth lens has negative focal power; the fifth lens has negative focal power; the sixth lens has positive focal power; the seventh lens has negative focal power, and the image side surface of the seventh lens is concave; the first lens to the seventh lens include at least four meniscus lenses with convex object side surfaces; wherein, half the diagonal length of the effective pixel area on the imaging surface of the camera lens ImgH, the aperture value fno of the camera lens, and the effective radius DT11 of the object side surface of the first lens satisfy the following conditions: 6.5 <ImgH*fno / DT11<7.5。

[0091] By reasonably distributing the optical power of each lens, it is beneficial to correct the aberration generated by the camera lens and improve the imaging quality of the camera lens. The first lens with positive optical power and the second lens with negative optical power have a good converging effect on light. In addition, the camera lens is equipped with a third lens with positive optical power and a convex image side, and a fourth lens with negative optical power, forming a double-Gauss structure, which can effectively perform apochromatism correction. At the same time, the camera lens is equipped with a fifth lens with negative optical power to increase the focal length and reduce the size of the camera lens. Combining a sixth lens with positive optical power and a seventh lens with negative optical power and a concave image side realizes the balanced correction of aberration in the camera lens, and improves the image quality on the basis of meeting the camera function. At least four meniscus lenses with convex object sides in the first lens to the seventh lens can effectively improve the sensitivity of the photographic lens. By controlling ImgH*fno / DT11 within a reasonable range, while maintaining the characteristic of a large image plane of the camera lens, the camera lens has a larger aperture, improves the imaging ability of the camera lens in a dark environment, broadens the use range of the camera lens, and improves the imaging quality of the camera lens.

[0092] Preferably, half of the diagonal length of the effective pixel area on the imaging surface of the camera lens ImgH, the aperture value fno of the camera lens, and the effective radius DT11 of the object side of the first lens satisfy: 6.73 ≤ ImgH*fno / DT11 ≤ 7.39.

[0093] In this embodiment, the on-axis distance TTL from the object side of the first lens to the imaging surface, the maximum half-field angle Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy: 8 < TTL*TAN(Semi-FOV) / (f - f1) < 11. By controlling TTL*TAN(Semi-FOV) / (f - f1) within a reasonable range, the camera lens can have a wider shooting angle as much as possible while maintaining a smaller TTL, thereby improving the optical performance of the camera lens, and at the same time being beneficial to the miniaturization and thinness of the camera lens. Preferably, 8.70 ≤ TTL*TAN(Semi-FOV) / (f - f1) ≤ 10.08.

[0094] In this embodiment, the entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth and sixth lenses satisfy: 1 < EPD / (f56 - f6) < 3. By restricting EPD / (f56 - f6) within a reasonable range, the light transmission of the camera lens can be effectively increased, with a high relative illumination, and the imaging quality of the camera lens in a relatively dark environment can be improved well. At the same time, by restricting the effective focal length f6 of the sixth lens and the combined focal length f56 of the fifth and sixth lenses, the deflection of the light path can be better restricted, and the generation of aberrations can be reduced. Preferably, 1.71 ≤ EPD / (f56 - f6) ≤ 2.82.

[0095] In this embodiment, the camera lens further includes an aperture, which is located between the second lens and the third lens. The axial distance TD from the object side surface of the first lens to the image side surface of the seventh lens, the axial distance SD from the aperture to the image side surface of the seventh lens, and the sum ∑ET of the edge thicknesses of the first lens to the seventh lens satisfy: 1.4 < ∑ET / (TD - SD) < 2. By restricting ∑ET / (TD - SD) within a reasonable range, the edge thicknesses and center thicknesses of each lens can be effectively controlled, thereby reducing the sensitivity of each lens and the processing risk of each lens, and enabling the camera lens to have better imaging quality. Preferably, 1.49 ≤ ∑ET / (TD - SD) ≤ 1.76.

[0096] In this embodiment, the edge thickness ET1 of the first lens, the edge thickness ET2 of the second lens, the edge thickness ET3 of the third lens, the edge thickness ET4 of the fourth lens, the edge thickness ET5 of the fifth lens, the edge thickness ET6 of the sixth lens, and the edge thickness ET7 of the seventh lens satisfy: 0.4 < (ET1 + ET3 + ET5) / (ET2 + ET4 + ET6 + ET7) < 0.6. By restricting (ET1 + ET3 + ET5) / (ET2 + ET4 + ET6 + ET7) within a reasonable range, the edge thicknesses of each lens of the camera lens can be reasonably distributed, the longitudinal spherical aberration and the ghost image of the edge image plane of the camera lens can be improved, and in addition, the sensitivity of each lens can be reduced, and the structural stability of the camera lens can be enhanced. Preferably, 0.46 ≤ (ET1 + ET3 + ET5) / (ET2 + ET4 + ET6 + ET7) ≤ 0.55.

[0097] In this embodiment, the axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens and the effective radius vertex of the object side surface of the sixth lens, and the axial 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 satisfy: 0 < (SAG62 - SAG61) / (SAG62 + SAG61) < 0.2. By restricting (SAG62 - SAG61) / (SAG62 + SAG61) within a reasonable range, it helps to improve the spherical aberration of the middle field of view and the coma of the edge field of view, enabling the camera lens to have better aberration correction ability. Preferably, 0.03 ≤ (SAG62 - SAG61) / (SAG62 + SAG61) ≤ 0.17.

[0098] In this embodiment, the axial distance SAG21 between the intersection of the object side surface of the second lens and the optical axis of the camera lens and the effective radius vertex of the object side surface of the second lens, the axial distance SAG22 between the intersection of the image side surface of the second lens and the optical axis and the effective radius vertex of the image side surface of the second lens, the axial distance SAG31 between the intersection of the object side surface of the third lens and the optical axis and the effective radius vertex of the object side surface of the third lens, and the axial distance SAG32 between the intersection of the image side surface of the third lens and the optical axis and the effective radius vertex of the image side surface of the third lens satisfy: -1.5 < (SAG21 + SAG22) / (SAG31 + SAG32) < -0.5. By restricting (SAG21 + SAG22) / (SAG31 + SAG32) within a reasonable range, it is possible to improve the imaging quality of the camera lens through the cooperation of the first lens, the second lens and the third lens, and at the same time, it can increase the effective focal length of the camera lens. Preferably, -1.12 ≤ (SAG21 + SAG22) / (SAG31 + SAG32) ≤ -0.89.

[0099] In this embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -2 < f2 / (R3 - R4) < -1.5. By restricting f2 / (R3 - R4) within a reasonable range, the camera lens can have better chromatic aberration correction ability. In addition, it reduces the sensitivity of the second lens, effectively avoiding a series of processing problems caused by poor processability of the second lens, and improving the yield rate of the camera lens. Preferably, -1.96 ≤ f2 / (R3 - R4) ≤ -1.64.

[0100] In this embodiment, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R4 of the image side surface of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: 1.5 < f12 / (R4 - R1) < 2. By restricting f12 / (R4 - R1) within a reasonable range, it helps to compress the TTL, which is beneficial to the thinning and lightening of the camera lens. In addition, it can increase the viewing angle of the camera lens structure, improve the angular magnification ratio, present clearer details of the photographed object, and improve the imaging quality of the camera lens. Preferably, 1.54 ≤ f12 / (R4 - R1) ≤ 1.83.

[0101] In this embodiment, the radius of curvature R11 of the object side surface of the sixth lens and the radius of curvature R12 of the image side surface of the sixth lens satisfy: 1.2 < (R11 + R12) / (R12 - R11) < 1.3. By restricting (R11 + R12) / (R12 - R11) within a reasonable range, it is beneficial to the processing and forming of the sixth lens. In addition, such a setting makes the bending degrees of the object side surface and the image side surface of the sixth lens not too large, which helps to compress the axial distance from the object side surface of the sixth lens to the imaging surface of the camera lens, is beneficial to correcting the aberration of the camera lens, helps to achieve the balance of various aberrations, and improves the imaging quality of the camera lens. Preferably, 1.22 ≤ (R11 + R12) / (R12 - R11) ≤ 1.25.

[0102] In this embodiment, the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses among the first lens to the seventh lens and the sum ∑ET of the edge thicknesses of the first lens to the seventh lens satisfy: 0.8 < ∑AT / ∑ET < 1.1. By restricting ∑AT / ∑ET within a reasonable range, it is beneficial to the miniaturization of the camera lens, reduces the risk of ghost images in photography, and can effectively reduce the chromatic aberration of the camera lens, improving the imaging quality of the camera lens. Preferably, 0.88 ≤ ∑AT / ∑ET ≤ 1.03.

[0103] In this embodiment, the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses among the first lens to the seventh lens, the axial distance T45 from the image side surface of the fourth lens to the object side surface of the fifth lens, and the axial distance T67 from the image side surface of the sixth lens to the object side surface of the seventh lens satisfy: 0.5 < (T45 + T67) / ∑AT < 0.6. By restricting (T45 + T67) / ∑AT within a reasonable range, not only can the camera lens better balance the chromatic aberration and effectively control the distortion amount of the camera lens, but also it can effectively reduce the risk of ghost images between the fourth lens and the fifth lens and between the sixth lens and the seventh lens, enabling the camera lens to have better imaging quality. Preferably, 0.55 ≤ (T45 + T67) / ∑AT ≤ 0.57.

[0104] In this embodiment, the sum ∑CT of the central thicknesses of each lens from the first lens to the seventh lens on the optical axis, the sum ∑AT of the air gaps between any two adjacent lenses from the first lens to the seventh lens on the optical axis, and the on-axis distance BFL from the image side of the seventh lens to the imaging surface satisfy: 0.9 < BFL / (∑CT - ∑AT) < 1.3. By restricting BFL / (∑CT - ∑AT) within a reasonable range, the thickness ratios of each lens can be reasonably allocated, enabling the camera lens to have better aberration correction ability. Additionally, it is beneficial to maintain a smaller TTL, which is conducive to the miniaturization and thinning of the camera lens. At the same time, it can avoid the processing difficulty caused by an overly short back focal length of the camera lens. Preferably, 1.00 ≤ BFL / (∑CT - ∑AT) ≤ 1.21.

[0105] In this embodiment, the effective radius DT21 of the object side of the second lens and the effective radius DT31 of the object side of the third lens satisfy: 1 < DT21 / DT31 < 1.2. By restricting DT21 / DT31 within a reasonable range, the chief ray angle of the camera lens can be adjusted, effectively improving the relative luminance of the camera lens, enhancing the image plane clarity, and ensuring the imaging quality of the camera lens. Preferably, 1.09 ≤ DT21 / DT31 ≤ 1.13.

[0106] In this embodiment, the effective radius DT32 of the image side of the third lens, the effective radius DT42 of the image side of the fourth lens, and the effective radius DT52 of the image side of the fifth lens satisfy: 2.5 < (DT52 - DT42) / (DT42 - DT32) < 4. By restricting (DT52 - DT42) / (DT42 - DT32) within a reasonable range, the light transmission amount of the camera lens can be effectively increased, enhancing the relative illuminance of the camera lens, especially in the peripheral field of view, such that the camera lens still has good imaging quality in a dim light environment. Preferably, 2.78 ≤ (DT52 - DT42) / (DT42 - DT32) ≤ 3.92.

[0107] In this embodiment, the following relationship is satisfied among the effective radius DT12 of the image side of the first lens, the effective radius DT72 of the image side of the seventh lens, half of the diagonal length ImgH of the effective pixel region on the imaging surface, and the maximum semi-field angle Semi-FOV of the camera lens: 1.5 < ImgH * TAN(Semi-FOV) / (DT72 - DT12) < 2. By restricting ImgH * TAN(Semi-FOV) / (DT72 - DT12) within a reasonable range, it helps to increase the height of the imaging surface of the camera lens, increase the effective focal length of the camera lens, and enable the camera lens to better balance the aberration of the middle field of view. Additionally, it helps to improve the processability of the first lens and the seventh lens, making the camera lens more practical. Preferably, 1.78 ≤ ImgH * TAN(Semi-FOV) / (DT72 - DT12) ≤ 1.96.

[0108] Embodiment 2

[0109] As Figures 1 to 25 shown, the camera lens has only seven lenses, which include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has a positive optical power; the second lens has a negative optical power; the third lens has a positive optical power, and the image side of the third lens is convex; the fourth lens has a negative optical power; the fifth lens has a negative optical power; the sixth lens has a positive optical power; the seventh lens has a negative optical power, and the image side of the seventh lens is concave; among the first lens to the seventh lens, there are at least four meniscus lenses with convex object sides; where the following relationship is satisfied among the effective radius DT12 of the image side of the first lens, the effective radius DT72 of the image side of the seventh lens, half of the diagonal length ImgH of the effective pixel region on the imaging surface, and the maximum semi-field angle Semi-FOV of the camera lens: 1.5 < ImgH * TAN(Semi-FOV) / (DT72 - DT12) < 2.

[0110] By reasonably distributing the optical power of each lens, it is beneficial to correct the aberration generated by the camera lens and improve the imaging quality of the camera lens. The first lens with positive optical power and the second lens with negative optical power have a good converging effect on light. In addition, the camera lens is equipped with a third lens with positive optical power and a convex image side, and a fourth lens with negative optical power, forming a double-Gauss structure, which can effectively perform apochromatism correction. At the same time, the camera lens is equipped with a fifth lens with negative optical power to increase the focal length and reduce the size of the camera lens. Combining the sixth lens with positive optical power and the seventh lens with negative optical power and a concave image side, the balanced correction of aberration in the camera lens is achieved, and the image quality is improved on the basis of meeting the camera function. At least four meniscus lenses with convex object sides among the first lens to the seventh lens can effectively improve the sensitivity of the photographic lens. By restricting ImgH*TAN(Semi-FOV) / (DT72-DT12) within a reasonable range, it helps to increase the height of the imaging surface of the camera lens, and increase the effective focal length of the camera lens, while enabling the camera lens to better balance the aberration of the middle field of view. In addition, it helps to improve the processability of the first lens and the seventh lens, making the camera lens more practical.

[0111] Preferably, the following relationship is satisfied among the effective radius DT12 of the image side of the first lens, the effective radius DT72 of the image side of the seventh lens, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the maximum semi-field angle Semi-FOV of the camera lens: 1.78 ≤ ImgH*TAN(Semi-FOV) / (DT72-DT12) ≤ 1.96.

[0112] In this embodiment, the following relationship is satisfied among the on-axis distance TTL from the object side of the first lens to the imaging surface, the maximum semi-field angle Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens: 8 < TTL*TAN(Semi-FOV) / (f - f1) < 11. By controlling TTL*TAN(Semi-FOV) / (f - f1) within a reasonable range, the camera lens can have a wider shooting angle as much as possible while maintaining a smaller TTL, thereby improving the optical performance of the camera lens, and at the same time being beneficial to the miniaturization and thinness of the camera lens. Preferably, 8.70 ≤ TTL*TAN(Semi-FOV) / (f - f1) ≤ 10.08.

[0113] In this embodiment, the entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth and sixth lenses satisfy: 1 < EPD / (f56 - f6) < 3. By restricting EPD / (f56 - f6) within a reasonable range, the light transmission amount of the camera lens can be effectively increased, and a high relative illumination can be obtained, which can well improve the imaging quality of the camera lens in a relatively dark environment. At the same time, by restricting the effective focal length f6 of the sixth lens and the combined focal length f56 of the fifth and sixth lenses, the deflection of the light path can be better restricted, and the generation of aberration can be reduced. Preferably, 1.71 ≤ EPD / (f56 - f6) ≤ 2.82.

[0114] In this embodiment, the camera lens further includes an aperture, and the aperture is located between the second lens and the third lens. The on-axis distance TD from the object side surface of the first lens to the image side surface of the seventh lens, the on-axis distance SD from the aperture to the image side surface of the seventh lens, and the sum ∑ET of the edge thicknesses of the first lens to the seventh lens satisfy: 1.4 < ∑ET / (TD - SD) < 2. By restricting ∑ET / (TD - SD) within a reasonable range, the edge thicknesses and center thicknesses of each lens can be effectively controlled, thereby reducing the sensitivity of each lens and the processing risk of each lens, and enabling the camera lens to have better imaging quality. Preferably, 1.49 ≤ ∑ET / (TD - SD) ≤ 1.76.

[0115] In this embodiment, the edge thickness ET1 of the first lens, the edge thickness ET2 of the second lens, the edge thickness ET3 of the third lens, the edge thickness ET4 of the fourth lens, the edge thickness ET5 of the fifth lens, the edge thickness ET6 of the sixth lens, and the edge thickness ET7 of the seventh lens satisfy: 0.4 < (ET1 + ET3 + ET5) / (ET2 + ET4 + ET6 + ET7) < 0.6. By restricting (ET1 + ET3 + ET5) / (ET2 + ET4 + ET6 + ET7) within a reasonable range, the edge thicknesses of each lens of the camera lens can be reasonably distributed, the longitudinal spherical aberration and the ghost image on the edge image plane of the camera lens can be improved, and in addition, the sensitivity of each lens can be reduced, and the structural stability of the camera lens can be enhanced. Preferably, 0.46 ≤ (ET1 + ET3 + ET5) / (ET2 + ET4 + ET6 + ET7) ≤ 0.55.

[0116] In this embodiment, the axial distance SAG61 between the intersection point of the object side surface of the sixth lens and the optical axis of the camera lens and the vertex of the effective radius of the object side surface of the sixth lens, and 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 satisfy: 0 < (SAG62 - SAG61) / (SAG62 + SAG61) < 0.2. By restricting (SAG62 - SAG61) / (SAG62 + SAG61) within a reasonable range, it helps to improve the spherical aberration of the middle field of view and the coma of the edge field of view, enabling the camera lens to have better aberration correction ability. Preferably, 0.03 ≤ (SAG62 - SAG61) / (SAG62 + SAG61) ≤ 0.17.

[0117] In this embodiment, the axial distance SAG21 between the intersection point of the object side surface of the second lens and the optical axis of the camera lens and the vertex of the effective radius of the object side surface of the second lens, the axial distance SAG22 between the intersection point of the image side surface of the second lens and the optical axis and the vertex of the effective radius of the image side surface of the second lens, the axial distance SAG31 between the intersection point of the object side surface of the third lens and the optical axis and the vertex of the effective radius of the object side surface of the third lens, and the axial distance SAG32 between the intersection point of the image side surface of the third lens and the optical axis and the vertex of the effective radius of the image side surface of the third lens satisfy: -1.5 < (SAG21 + SAG22) / (SAG31 + SAG32) < -0.5. By restricting (SAG21 + SAG22) / (SAG31 + SAG32) within a reasonable range, it is possible to improve the imaging quality of the camera lens through the cooperation of the first lens, the second lens, and the third lens, and at the same time, it can increase the effective focal length of the camera lens. Preferably, -1.12 ≤ (SAG21 + SAG22) / (SAG31 + SAG32) ≤ -0.89.

[0118] In this embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -2 < f2 / (R3 - R4) < -1.5. By restricting f2 / (R3 - R4) within a reasonable range, the camera lens can have better chromatic aberration correction ability. In addition, it reduces the sensitivity of the second lens, effectively avoiding a series of processing problems caused by poor processability of the second lens, and improving the yield of the camera lens. Preferably, -1.96 ≤ f / (R3 - R4) ≤ -1.64.

[0119] In this embodiment, the curvature radius R1 of the object side surface of the first lens, the curvature radius R4 of the image side surface of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: 1.5 < f12 / (R4 - R1) < 2. By restricting f12 / (R4 - R1) within a reasonable range, it helps to compress the TTL, which is beneficial to the thinning and lightening of the camera lens. In addition, it can increase the field angle of the camera lens structure, improve the angular magnification, present clearer details of the photographed object, and improve the imaging quality of the camera lens. Preferably, 1.54 ≤ f12 / (R4 - R1) ≤ 1.83.

[0120] In this embodiment, 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: 1.2 < (R11 + R12) / (R12 - R11) < 1.3. By restricting (R11 + R12) / (R12 - R11) within a reasonable range, it is beneficial to the processing and forming of the sixth lens. In addition, such a setting makes the bending degrees of the object side surface and the image side surface of the sixth lens not too large, which helps to compress the on-axis distance from the object side surface of the sixth lens to the imaging surface of the camera lens, is beneficial to correcting the aberration of the camera lens, helps to achieve the balance of various aberrations, and improves the imaging quality of the camera lens. Preferably, 1.22 ≤ (R11 + R12) / (R12 - R11) ≤ 1.25.

[0121] In this embodiment, the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses among the first lens to the seventh lens and the sum ∑ET of the edge thicknesses of the first lens to the seventh lens satisfy: 0.8 < ∑AT / ∑ET < 1.1. By restricting ∑AT / ∑ET within a reasonable range, it is beneficial to the miniaturization of the camera lens, reduces the ghost image risk during imaging, and can effectively reduce the chromatic aberration of the camera lens, improving the imaging quality of the camera lens. Preferably, 0.88 ≤ ∑AT / ∑ET ≤ 1.03.

[0122] In this embodiment, the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses among the first lens to the seventh lens, the on-axis distance T45 from the image side surface of the fourth lens to the object side surface of the fifth lens, and the on-axis distance T67 from the image side surface of the sixth lens to the object side surface of the seventh lens satisfy: 0.5 < (T45 + T67) / ∑AT < 0.6. By restricting (T45 + T67) / ∑AT within a reasonable range, not only can the camera lens better balance the chromatic aberration and effectively control the distortion amount of the camera lens, but also it can effectively reduce the ghost image risk between the fourth lens and the fifth lens and between the sixth lens and the seventh lens, enabling the camera lens to have better imaging quality. Preferably, 0.55 ≤ (T45 + T67) / ∑AT ≤ 0.57.

[0123] In this embodiment, the sum ∑CT of the central thicknesses of each lens among the first lens to the seventh lens on the optical axis, the sum ∑AT of the axial air gaps between any two adjacent lenses among the first lens to the seventh lens on the optical axis, and the axial distance BFL from the image side of the seventh lens to the imaging surface satisfy: 0.9 < BFL / (∑CT - ∑AT) < 1.3. By restricting BFL / (∑CT - ∑AT) within a reasonable range, the thickness ratios of each lens can be reasonably allocated, enabling the camera lens to have better aberration correction ability. Additionally, it is beneficial to maintain a smaller TTL, which is conducive to the miniaturization, thinning, and lightening of the camera lens. At the same time, it can avoid the processing difficulty caused by an overly short back focal length of the camera lens. Preferably, 1.00 ≤ BFL / (∑CT - ∑AT) ≤ 1.21.

[0124] In this embodiment, the effective radius DT21 of the object side of the second lens and the effective radius DT31 of the object side of the third lens satisfy: 1 < DT21 / DT31 < 1.2. By restricting DT21 / DT31 within a reasonable range, the principal ray angle of the camera lens can be adjusted, effectively improving the relative luminance of the camera lens, enhancing the image plane clarity, and ensuring the imaging quality of the camera lens. Preferably, 1.09 ≤ DT21 / DT31 ≤ 1.13.

[0125] In this embodiment, the effective radius DT32 of the image side of the third lens, the effective radius DT42 of the image side of the fourth lens, and the effective radius DT52 of the image side of the fifth lens satisfy: 2.5 < (DT52 - DT42) / (DT42 - DT32) < 4. By restricting (DT52 - DT42) / (DT42 - DT32) within a reasonable range, the light transmission amount of the camera lens can be effectively increased, the relative illuminance of the camera lens can be enhanced, especially the relative illuminance of the edge field of view can be enhanced, enabling the camera lens to still have good imaging quality in a relatively dark environment. Preferably, 2.78 ≤ (DT52 - DT42) / (DT42 - DT32) ≤ 3.92.

[0126] Optionally, the above camera lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0127] The camera lens in this application can adopt multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the optical power, surface shape, central thickness of each lens, and the axial distance between each lens, etc., the aperture of the camera lens 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 more conducive to production and processing and applicable to portable electronic devices such as smartphones. The above camera lens also has the advantages of a large aperture, a large image plane, and good imaging quality, and can meet the requirements of miniaturization of intelligent electronic products.

[0128] 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.

[0129] Since the aspheric surface is a structure obtained by rotating the curved surface in the meridian plane around the optical axis, it has rotational symmetry. In an ideal optical system, it can well correct the aberrations in the meridian and sagittal planes. At the same time, its unique lens model can provide sufficient space for subsequent related adjustments, making the related structure and assembly process more flexible without excessively reducing the image quality.

[0130] However, those skilled in the art will appreciate that the number of lenses comprising the imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe an imaging lens using seven lenses as an example, the imaging lens is not limited to including seven lenses. If desired, the imaging lens may include other numbers of lenses.

[0131] The following further describes examples of specific surface shapes and parameters of the camera lens applicable to the above-mentioned embodiment with reference to the accompanying drawings.

[0132] It should be noted that any one of the following examples 1 to 5 is applicable to all embodiments of the present application.

[0133] Example 1

[0134] like Figures 1 to 5 As shown, the camera lens of Example 1 of the present application is described. Figure 1 A schematic diagram showing the structure of a camera lens of Example 1 is shown.

[0135] like Figure 1 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, 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.

[0136] 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 concave 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 convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E6 has negative focal power, with its object-side surface S13 being concave 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.

[0137] In this example, the total effective focal length f of the camera lens is 6.51 mm, the maximum half field of view Semi-FOV of the camera lens is 44.48°, the total length TTL of the camera lens is 7.41 mm, the image height ImgH of the camera lens is 6.50 mm, and the aperture number Fno of the camera lens is 1.91.

[0138] Table 1 shows the basic structural parameters of the camera lens of Example 1, wherein the units of curvature radius, thickness / distance, focal length and effective radius are all millimeters (mm).

[0139]

[0140] Table 1

[0141] 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:

[0142]

[0143] 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.

[0144] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.1790E-02 -3.6646E-02 1.6901E-01 -4.5364E-01 7.9426E-01 -9.5318E-01 8.0764E-01 S2 -8.0118E-03 -4.5779E-02 2.4755E-01 -7.1538E-01 1.3366E+00 -1.7143E+00 1.5574E+00 S3 -5.8156E-03 -3.5444E-02 2.6216E-01 -8.9314E-01 1.9250E+00 -2.8173E+00 2.8976E+00 S4 1.0417E-02 -1.2088E-01 9.6163E-01 -4.3244E+00 1.2611E+01 -2.5207E+01 3.5645E+01 S5 2.1226E-03 -1.7996E-01 1.0969E+00 -4.2074E+00 1.0730E+01 -1.8996E+01 2.3962E+01 S6 -2.8935E-02 3.3953E-02 -5.0198E-02 -2.4039E-01 1.4573E+00 -3.7293E+00 5.7832E+00 S7 -4.6535E-02 -5.3919E-03 6.1251E-02 -2.1259E-03 -6.7515E-01 2.2093E+00 -3.7631E+00 S8 -4.0739E-02 3.1250E-02 -6.8993E-02 1.2918E-01 -1.7444E-01 1.5328E-01 -7.8972E-02 S9 -7.5306E-02 4.6448E-02 -1.9905E-02 -1.9916E-02 5.5348E-02 -6.4825E-02 4.8509E-02 S10 -1.1262E-01 5.1363E-02 -1.6704E-02 -1.4525E-02 3.1031E-02 -2.7056E-02 1.4523E-02 S11 -2.8610E-02 9.9763E-03 -1.4588E-02 1.0645E-02 -5.0444E-03 1.6003E-03 -3.4553E-04 S12 2.5537E-02 -4.0409E-04 -1.0775E-02 7.9872E-03 -3.4307E-03 9.9906E-04 -2.0564E-04 S13 -8.1698E-02 3.3353E-02 -1.2445E-02 4.8205E-03 -1.3882E-03 2.6815E-04 -3.5220E-05 S14 -8.9705E-02 3.4455E-02 -1.1800E-02 3.2355E-03 -6.6830E-04 1.0184E-04 -1.1409E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 -4.9065E-01 2.1443E-01 -6.6808E-02 1.4467E-02 -2.0678E-03 1.7529E-04 -6.6714E-06 S2 -1.0179E+00 4.8021E-01 -1.6198E-01 3.8075E-02 -5.9217E-03 5.4741E-04 -2.2764E-05 S3 -2.1294E+00 1.1221E+00 -4.1977E-01 1.0856E-01 -1.8396E-02 1.8304E-03 -8.0632E-05 S4 -3.6253E+01 2.6627E+01 -1.3999E+01 5.1370E+00 -1.2494E+00 1.8095E-01 -1.1809E-02 S5 -2.1825E+01 1.4382E+01 -6.7885E+00 2.2362E+00 -4.8788E-01 6.3319E-02 -3.6980E-03 S6 -5.9640E+00 4.2329E+00 -2.0809E+00 6.9688E-01 -1.5178E-01 1.9379E-02 -1.1001E-03 S7 4.0657E+00 -2.9639E+00 1.4833E+00 -5.0393E-01 1.1130E-01 -1.4434E-02 8.3500E-04 S8 1.3960E-02 1.0126E-02 -8.6052E-03 3.1225E-03 -6.3670E-04 7.0956E-05 -3.3791E-06 S9 -2.5159E-02 9.2509E-03 -2.4043E-03 4.3112E-04 -5.0622E-05 3.4949E-06 -1.0738E-07 S10 -5.2231E-03 1.2943E-03 -2.2164E-04 2.5760E-05 -1.9382E-06 8.5073E-08 -1.6514E-09 S11 5.1854E-05 -5.4842E-06 4.0893E-07 -2.1121E-08 7.2172E-10 -1.4725E-11 1.3621E-13 S12 3.0344E-05 -3.2122E-06 2.4132E-07 -1.2537E-08 4.2773E-10 -8.6160E-12 7.7612E-14 S13 3.2237E-06 -2.0839E-07 9.4973E-09 -2.9908E-10 6.2014E-12 -7.6256E-14 4.2159E-16 S14 9.3886E-07 -5.6426E-08 2.4415E-09 -7.3907E-11 1.4832E-12 -1.7707E-14 9.5086E-17

[0145] Table 2

[0146] Figure 2 The axial chromatic aberration curve of the camera lens of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens. Figure 3 The chromatic aberration curve of the camera lens 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. Figure 4 The astigmatism curve of the imaging lens of Example 1 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 5 The distortion curve of the camera lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0147] according to Figures 2 to 5 It can be seen that the camera lens given in Example 1 can achieve good imaging quality.

[0148] Example 2

[0149] like Figures 6 to 10 As shown, the camera lens of Example 2 of the present application is described. In this example and the following examples, for the sake of brevity, some descriptions similar to Example 1 will be omitted. Figure 6 A schematic diagram of the camera lens structure of Example 2 is shown.

[0150] like Figure 6 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, 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.

[0151] 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 concave and its image-side surface S6 being convex. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E6 has negative focal power, with its object-side surface S13 being concave 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.

[0152] In this example, the total effective focal length f of the camera lens is 6.46 mm, the maximum half field of view Semi-FOV of the camera lens is 44.43°, the total length TTL of the camera lens is 7.43 mm, the image height ImgH of the camera lens is 6.50 mm, and the aperture number Fno of the camera lens is 1.91.

[0153] Table 3 shows the basic structural parameters of the camera lens of Example 2, wherein the units of curvature radius, thickness / distance, focal length and effective radius are all millimeters (mm).

[0154]

[0155]

[0156] Table 3

[0157] Table 4 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 2, wherein each aspheric surface shape can be defined by formula (1) given in Example 1 above.

[0158] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.0208E-02 -2.8903E-02 1.4836E-01 -4.2041E-01 7.5961E-01 -9.2803E-01 7.9386E-01 S2 -5.0524E-03 -6.3356E-02 3.0413E-01 -8.5131E-01 1.5874E+00 -2.0610E+00 1.9088E+00 S3 -2.1980E-03 -5.9721E-02 3.3058E-01 -1.0087E+00 2.0562E+00 -2.9274E+00 2.9732E+00 S4 1.4468E-02 -1.5914E-01 1.1312E+00 -4.8015E+00 1.3584E+01 -2.6770E+01 3.7677E+01 S5 -6.0103E-03 -1.3695E-01 8.9845E-01 -3.7753E+00 1.0677E+01 -2.1065E+01 2.9620E+01 S6 -3.2010E-02 -1.1103E-03 1.6825E-01 -1.0419E+00 3.4248E+00 -7.1410E+00 1.0100E+01 S7 -5.9331E-02 1.1743E-01 -5.2376E-01 1.6303E+00 -3.6100E+00 5.7811E+00 -6.7808E+00 S8 -3.4276E-02 1.3351E-02 -8.1640E-03 -2.1919E-02 6.9569E-02 -1.0687E-01 1.0892E-01 S9 -6.9454E-02 5.6451E-02 -6.0986E-02 4.7526E-02 -1.3260E-02 -1.6074E-02 2.2709E-02 S10 -1.0390E-01 5.1409E-02 -2.8202E-02 6.2175E-03 9.4377E-03 -1.1812E-02 6.9426E-03 S11 -2.7838E-02 5.4481E-03 -6.0251E-03 3.1837E-03 -1.1146E-03 2.3393E-04 -1.8447E-05 S12 2.1461E-02 -1.3606E-03 -4.7007E-03 2.7773E-03 -1.0142E-03 2.7163E-04 -5.3856E-05 S13 -8.4544E-02 3.1744E-02 -8.1969E-03 2.2501E-03 -5.7668E-04 1.0915E-04 -1.4383E-05 S14 -9.0785E-02 3.3683E-02 -1.0404E-02 2.5031E-03 -4.5162E-04 5.9766E-05 -5.7483E-06 Face number A18 A20 A22 A24 A26 A28 A30 S1 -4.8445E-01 2.1205E-01 -6.6064E-02 1.4295E-02 -2.0411E-03 1.7286E-04 -6.5723E-06 S2 -1.2762E+00 6.1674E-01 -2.1324E-01 5.1390E-02 -8.1947E-03 7.7671E-04 -3.3117E-05 S3 -2.1749E+00 1.1452E+00 -4.2888E-01 1.1111E-01 -1.8865E-02 1.8807E-03 -8.3007E-05 S4 -3.8349E+01 2.8269E+01 -1.4939E+01 5.5135E+00 -1.3489E+00 1.9651E-01 -1.2900E-02 S5 -2.9992E+01 2.1869E+01 -1.1352E+01 4.0815E+00 -9.6305E-01 1.3367E-01 -8.2348E-03 S6 -1.0001E+01 7.0152E+00 -3.4712E+00 1.1850E+00 -2.6557E-01 3.5155E-02 -2.0824E-03 S7 5.8549E+00 -3.7092E+00 1.7007E+00 -5.4847E-01 1.1788E-01 -1.5143E-02 8.7903E-04 S8 -7.9319E-02 4.2046E-02 -1.6104E-02 4.3347E-03 -7.7623E-04 8.2901E-05 -3.9920E-06 S9 -1.4619E-02 5.9002E-03 -1.5917E-03 2.8744E-04 -3.3376E-05 2.2514E-06 -6.6999E-08 S10 -2.5466E-03 6.2469E-04 -1.0433E-04 1.1732E-05 -8.5112E-07 3.5999E-08 -6.7474E-10 S11 -3.2585E-06 1.1086E-06 -1.4814E-07 1.1402E-08 -5.2725E-10 1.3681E-11 -1.5383E-13 S12 7.7966E-06 -8.1282E-07 6.0043E-08 -3.0593E-09 1.0219E-10 -2.0137E-12 1.7750E-14 S13 1.3275E-06 -8.6639E-08 3.9909E-09 -1.2719E-10 2.6731E-12 -3.3371E-14 1.8759E-16 S14 4.0006E-07 -2.0000E-08 7.0664E-10 -1.7084E-11 2.6588E-13 -2.3559E-15 8.7193E-18

[0159] Table 4

[0160] Figure 7 The axial chromatic aberration curve of the camera lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens. Figure 8 The chromatic aberration curve of the camera lens 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. Figure 9 The astigmatism curve of the imaging lens of Example 2 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 10 The distortion curve of the camera lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0161] according to Figures 7 to 10 It can be seen that the camera lens provided in Example 2 can achieve good imaging quality.

[0162] Example 3

[0163] like Figures 11 to 15 As shown, the camera lens of Example 3 of this application is described. Figure 11 A schematic diagram of the camera lens structure of Example 3 is shown.

[0164] like Figure 11As shown, the camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, 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.

[0165] 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 concave and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E6 has negative focal power, with its object-side surface S13 being concave 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.

[0166] In this example, the total effective focal length f of the camera lens is 6.48 mm, the maximum half field of view Semi-FOV of the camera lens is 44.40°, the total length TTL of the camera lens is 7.43 mm, the image height ImgH of the camera lens is 6.50 mm, and the aperture number Fno of the camera lens is 1.91.

[0167] Table 5 shows the basic structural parameters of the camera lens of Example 3, wherein the units of curvature radius, thickness / distance, focal length and effective radius are all millimeters (mm).

[0168]

[0169]

[0170] Table 5

[0171] Table 6 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 3, wherein each aspheric surface shape can be defined by formula (1) given in Example 1 above.

[0172] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.0378E-02 -2.9398E-02 1.4681E-01 -4.0863E-01 7.2818E-01 -8.7942E-01 7.4468E-01 S2 -5.3572E-03 -5.6778E-02 2.7404E-01 -7.6024E-01 1.3974E+00 -1.7836E+00 1.6213E+00 S3 -3.1136E-03 -5.5831E-02 3.1555E-01 -9.6774E-01 1.9781E+00 -2.8178E+00 2.8582E+00 S4 1.4426E-02 -1.6426E-01 1.1190E+00 -4.6025E+00 1.2719E+01 -2.4604E+01 3.4087E+01 S5 -1.0662E-02 -1.1194E-01 8.3323E-01 -3.7584E+00 1.1073E+01 -2.2395E+01 3.1994E+01 S6 -2.5524E-02 -3.8095E-02 3.0307E-01 -1.4063E+00 4.2162E+00 -8.5689E+00 1.2141E+01 S7 -4.8441E-02 5.4382E-02 -2.9572E-01 1.0728E+00 -2.6538E+00 4.5938E+00 -5.6858E+00 S8 -3.1109E-02 -3.7316E-03 3.3406E-02 -8.8863E-02 1.4511E-01 -1.6755E-01 1.4362E-01 S9 -6.6276E-02 3.8470E-02 -2.9823E-03 -6.3895E-02 1.2723E-01 -1.3812E-01 9.7720E-02 S10 -1.0600E-01 5.4436E-02 -2.9882E-02 4.4832E-03 1.3772E-02 -1.6001E-02 9.3693E-03 S11 -2.7257E-02 3.1140E-03 -3.0139E-03 9.8821E-04 -6.0511E-05 -1.1612E-04 6.3647E-05 S12 2.2034E-02 -2.4267E-03 -3.9248E-03 2.4791E-03 -9.4366E-04 2.6142E-04 -5.3191E-05 S13 -8.4050E-02 3.1362E-02 -8.2147E-03 2.3409E-03 -6.1503E-04 1.1772E-04 -1.5613E-05 S14 -8.9567E-02 3.2246E-02 -9.5024E-03 2.1471E-03 -3.5646E-04 4.2126E-05 -3.4472E-06 Face number A18 A20 A22 A24 A26 A28 A30 S1 -4.5025E-01 1.9537E-01 -6.0356E-02 1.2952E-02 -1.8343E-03 1.5407E-04 -5.8100E-06 S2 -1.0630E+00 5.0361E-01 -1.7065E-01 4.0304E-02 -6.2980E-03 5.8497E-04 -2.4442E-05 S3 -2.0850E+00 1.0938E+00 -4.0793E-01 1.0522E-01 -1.7783E-02 1.7647E-03 -7.7537E-05 S4 -3.4205E+01 2.4879E+01 -1.2977E+01 4.7285E+00 -1.1421E+00 1.6427E-01 -1.0647E-02 S5 -3.2753E+01 2.4085E+01 -1.2592E+01 4.5582E+00 -1.0831E+00 1.5149E-01 -9.4165E-03 S6 -1.2188E+01 8.7142E+00 -4.4047E+00 1.5372E+00 -3.5222E-01 4.7660E-02 -2.8851E-03 S7 5.0886E+00 -3.2968E+00 1.5302E+00 -4.9577E-01 1.0644E-01 -1.3606E-02 7.8381E-04 S8 -9.3247E-02 4.5844E-02 -1.6759E-02 4.3937E-03 -7.7664E-04 8.2544E-05 -3.9736E-06 S9 -4.7667E-02 1.6357E-02 -3.9444E-03 6.5415E-04 -7.0966E-05 4.5279E-06 -1.2865E-07 S10 -3.4727E-03 8.6533E-04 -1.4720E-04 1.6888E-05 -1.2513E-06 5.4101E-08 -1.0374E-09 S11 -1.7001E-05 2.7546E-06 -2.8806E-07 1.9646E-08 -8.4754E-10 2.1066E-11 -2.3045E-13 S12 7.8529E-06 -8.3143E-07 6.2212E-08 -3.2056E-09 1.0817E-10 -2.1516E-12 1.9130E-14 S13 1.4489E-06 -9.5103E-08 4.4087E-09 -1.4150E-10 2.9967E-12 -3.7715E-14 2.1380E-16 S14 1.8661E-07 -5.8757E-09 4.4880E-11 4.3566E-12 -1.9104E-13 3.4061E-15 -2.3858E-17

[0173] Table 6

[0174] Figure 12The axial chromatic aberration curve of the camera lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens. Figure 13 The chromatic aberration curve of the camera lens 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. Figure 14 The astigmatism curve of the imaging lens of Example 3 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 15 The distortion curve of the camera lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0175] according to Figures 12 to 15 It can be seen that the camera lens given in Example 3 can achieve good imaging quality.

[0176] Example 4

[0177] like Figures 16 to 20 As shown, the camera lens of Example 4 of the present application is described. Figure 16 A schematic diagram showing the structure of a camera lens of Example 4 is shown.

[0178] like Figure 16 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, 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.

[0179] 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 concave and its image-side surface S6 being convex. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E6 has negative focal power, with its object-side surface S13 being concave 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.

[0180] In this example, the total effective focal length f of the camera lens is 5.99 mm, the maximum half field of view angle Semi-FOV of the camera lens is 44.32°, the total length TTL of the camera lens is 6.94 mm, the image height ImgH of the camera lens is 6.05 mm, and the aperture number Fno of the camera lens is 1.95.

[0181] Table 7 shows the basic structural parameters of the camera lens of Example 4, wherein the units of curvature radius, thickness / distance, focal length and effective radius are all millimeters (mm).

[0182]

[0183]

[0184] Table 7

[0185] Table 8 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 4, where the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0186] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.3813E-02 -4.6021E-02 2.5532E-01 -8.1169E-01 1.6675E+00 -2.3308E+00 2.2883E+00 S2 -8.4524E-03 -7.8071E-02 4.6468E-01 -1.5381E+00 3.3352E+00 -4.9977E+00 5.3229E+00 S3 -5.2645E-03 -7.5872E-02 5.2616E-01 -1.9029E+00 4.5355E+00 -7.5026E+00 8.8265E+00 S4 1.6647E-02 -2.3405E-01 1.9185E+00 -9.3194E+00 3.0200E+01 -6.8292E+01 1.1049E+02 S5 -1.7181E-02 -9.5101E-02 8.4284E-01 -4.5822E+00 1.6316E+01 -3.9803E+01 6.8343E+01 S6 -3.4566E-02 -5.6937E-02 5.4943E-01 -2.8038E+00 9.1910E+00 -2.0531E+01 3.2219E+01 S7 -6.6513E-02 1.1449E-01 -6.7337E-01 2.7196E+00 -7.5418E+00 1.4671E+01 -2.0443E+01 S8 -4.0394E-02 8.5029E-03 2.3235E-02 -1.2828E-01 2.9601E-01 -4.3603E-01 4.4992E-01 S9 -7.6834E-02 3.7415E-02 1.9682E-02 -1.2270E-01 2.2853E-01 -2.6151E-01 2.0316E-01 S10 -1.2327E-01 5.6040E-02 -1.7318E-02 -1.5568E-02 3.5019E-02 -3.2934E-02 1.9217E-02 S11 -3.2853E-02 1.3782E-03 -1.5346E-03 3.7943E-04 -5.9320E-05 -7.1859E-05 6.9388E-05 S12 2.9226E-02 -9.4532E-03 1.5350E-04 6.8578E-04 -5.1391E-04 2.5213E-04 -7.9309E-05 S13 -9.8825E-02 4.1385E-02 -1.2190E-02 3.9412E-03 -1.1760E-03 2.5468E-04 -3.8100E-05 S14 -1.0570E-01 4.3262E-02 -1.4753E-02 3.9365E-03 -7.9270E-04 1.1798E-04 -1.2872E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.6053E+00 8.0849E-01 -2.8995E-01 7.2237E-02 -1.1877E-02 1.1582E-03 -5.0707E-05 S2 -4.0862E+00 2.2661E+00 -8.9890E-01 2.4854E-01 -4.5470E-02 4.9445E-03 -2.4187E-04 S3 -7.4687E+00 4.5469E+00 -1.9687E+00 5.8968E-01 -1.1576E-01 1.3342E-02 -6.8086E-04 S4 -1.2947E+02 1.1000E+02 -6.7037E+01 2.8543E+01 -8.0574E+00 1.3544E+00 -1.0258E-01 S5 -8.3738E+01 7.3364E+01 -4.5467E+01 1.9390E+01 -5.3859E+00 8.7135E-01 -6.1690E-02 S6 -3.6081E+01 2.8945E+01 -1.6489E+01 6.5065E+00 -1.6891E+00 2.5924E-01 -1.7804E-02 S7 2.0651E+01 -1.5156E+01 8.0042E+00 -2.9665E+00 7.3291E-01 -1.0850E-01 7.2871E-03 S8 -3.3845E-01 1.8845E-01 -7.7311E-02 2.2769E-02 -4.5529E-03 5.5239E-04 -3.0617E-05 S9 -1.1094E-01 4.3057E-02 -1.1814E-02 2.2370E-03 -2.7762E-04 2.0279E-05 -6.5978E-07 S10 -7.5135E-03 2.0164E-03 -3.7202E-04 4.6316E-05 -3.7121E-06 1.7259E-07 -3.5294E-09 S11 -2.5664E-05 5.2667E-06 -6.6755E-07 5.3843E-08 -2.7063E-09 7.7611E-11 -9.7298E-13 S12 1.6354E-05 -2.2700E-06 2.1423E-07 -1.3592E-08 5.5598E-10 -1.3267E-11 1.4045E-13 S13 3.9779E-06 -2.9310E-07 1.5218E-08 -5.4595E-10 1.2899E-11 -1.8083E-13 1.1404E-15 S14 1.0263E-06 -5.9496E-08 2.4757E-09 -7.2004E-11 1.3894E-12 -1.5984E-14 8.2996E-17

[0187] Table 8

[0188] Figure 17 The axial chromatic aberration curve of the camera lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens. Figure 18 The chromatic aberration curve of the camera lens 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. Figure 19 The astigmatism curve of the imaging lens of Example 4 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 20 The distortion curve of the camera lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0189] according to Figures 17 to 20 It can be seen that the camera lens given in Example 4 can achieve good imaging quality.

[0190] Example 5

[0191] like Figures 21 to 25 As shown, the camera lens of Example 5 of the present application is described. Figure 21 A schematic diagram showing the structure of a camera lens of Example 5 is shown.

[0192] like Figure 21 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, 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.

[0193] 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 concave and its image-side surface S6 being convex. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E6 has negative 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.

[0194] In this example, the total effective focal length f of the camera lens is 6.58 mm, the maximum half field of view Semi-FOV of the camera lens is 43.83°, the total length TTL of the camera lens is 7.59 mm, the image height ImgH of the camera lens is 6.50 mm, and the aperture number Fno of the camera lens is 2.00.

[0195] Table 9 shows the basic structural parameters of the camera lens of Example 5, where the units of curvature radius, thickness / distance, focal length and effective radius are all millimeters (mm).

[0196]

[0197]

[0198] Table 9

[0199] Table 10 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 5, where the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0200] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.1159E-02 -3.3128E-02 1.6152E-01 -4.4393E-01 7.8722E-01 -9.5147E-01 8.0950E-01 S2 -1.6182E-03 -5.9070E-02 2.6144E-01 -6.8283E-01 1.1936E+00 -1.4605E+00 1.2798E+00 S3 2.3207E-03 -6.9986E-02 3.5950E-01 -1.0713E+00 2.1514E+00 -3.0359E+00 3.0703E+00 S4 1.6560E-02 -1.8202E-01 1.3322E+00 -5.8899E+00 1.7365E+01 -3.5644E+01 5.2241E+01 S5 -1.0252E-02 -8.6001E-02 5.9881E-01 -2.6364E+00 7.6613E+00 -1.5331E+01 2.1680E+01 S6 -2.5535E-02 -1.6989E-02 1.9462E-01 -9.8323E-01 2.9831E+00 -5.9481E+00 8.1537E+00 S7 -5.1653E-02 5.5558E-02 -2.7726E-01 9.9623E-01 -2.4867E+00 4.3525E+00 -5.4354E+00 S8 -3.6621E-02 1.6030E-02 -2.4735E-02 2.6842E-02 -1.1380E-02 -2.0770E-02 4.7012E-02 S9 -6.3332E-02 2.1920E-02 3.9086E-02 -1.2430E-01 1.8184E-01 -1.6988E-01 1.0900E-01 S10 -9.9913E-02 2.4320E-02 3.3198E-02 -7.2644E-02 7.5250E-02 -4.9534E-02 2.2188E-02 S11 -2.8085E-02 3.1183E-03 -2.4534E-03 1.0934E-03 -2.6713E-04 -3.9283E-05 4.8832E-05 S12 2.2745E-02 -9.5441E-03 3.3276E-03 -1.2005E-03 2.5046E-04 -9.6112E-06 -8.4614E-06 S13 -7.5107E-02 2.4750E-02 -6.3421E-03 2.1455E-03 -6.3314E-04 1.2610E-04 -1.6859E-05 S14 -8.6508E-02 3.1772E-02 -1.0148E-02 2.5197E-03 -4.6206E-04 6.1612E-05 -5.9767E-06 Face number A18 A20 A22 A24 A26 A28 A30 S1 -4.9296E-01 2.1576E-01 -6.7287E-02 1.4581E-02 -2.0855E-03 1.7691E-04 -6.7374E-06 S2 -8.1160E-01 3.7258E-01 -1.2245E-01 2.8057E-02 -4.2540E-03 3.8337E-04 -1.5542E-05 S3 -2.2435E+00 1.1825E+00 -4.4386E-01 1.1533E-01 -1.9641E-02 1.9641E-03 -8.6960E-05 S4 -5.5367E+01 4.2504E+01 -2.3393E+01 8.9926E+00 -2.2916E+00 3.4774E-01 -2.3778E-02 S5 -2.1952E+01 1.5945E+01 -8.2188E+00 2.9252E+00 -6.8081E-01 9.2747E-02 -5.5664E-03 S6 -7.8673E+00 5.3883E+00 -2.6046E+00 8.6835E-01 -1.8993E-01 2.4520E-02 -1.4155E-03 S7 4.8968E+00 -3.1883E+00 1.4855E+00 -4.8269E-01 1.0382E-01 -1.3274E-02 7.6333E-04 S8 -4.8377E-02 3.1106E-02 -1.3318E-02 3.8102E-03 -7.0194E-04 7.5498E-05 -3.6113E-06 S9 -4.9421E-02 1.5978E-02 -3.6596E-03 5.7950E-04 -6.0253E-05 3.6954E-06 -1.0119E-07 S10 -6.9402E-03 1.5281E-03 -2.3542E-04 2.4806E-05 -1.7009E-06 6.8293E-08 -1.2164E-09 S11 -1.5299E-05 2.6414E-06 -2.8524E-07 1.9837E-08 -8.6792E-10 2.1831E-11 -2.4154E-13 S12 2.4051E-06 -3.4172E-07 3.0112E-08 -1.7128E-09 6.1458E-11 -1.2691E-12 1.1519E-14 S13 1.5581E-06 -1.0133E-07 4.6430E-09 -1.4708E-10 3.0720E-12 -3.8113E-14 2.1297E-16 S14 4.2311E-07 -2.1826E-08 8.1167E-10 -2.1207E-11 3.6968E-13 -3.8637E-15 1.8323E-17

[0201] Table 10

[0202] Figure 22 The axial chromatic aberration curve of the camera lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens. Figure 23 The chromatic aberration curve of the camera lens 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. Figure 24The astigmatism curve of the imaging lens of Example 5 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 25 The distortion curve of the camera lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0203] according to Figures 22 to 25 It can be seen that the camera lens given in Example 5 can achieve good imaging quality.

[0204] In summary, Examples 1 to 5 respectively satisfy the relationships shown in Table 11.

[0205] Conditional / Example 1 2 3 4 5 ImgH*fno / DT11 6.73 7.04 6.97 7.17 7.39 TTL*TAN(Semi-FOV) / (f-f1) 8.70 9.73 9.68 10.08 8.97 EPD / (f56-f6) 2.82 1.71 1.80 1.79 2.28 ∑ET / (TD-SD) 1.49 1.61 1.60 1.73 1.76 (ET1+ET3+ET5) / (ET2+ET4+ET6+ET7) 0.50 0.55 0.52 0.49 0.46 (SAG62-SAG61) / (SAG62+SAG61) 0.15 0.17 0.16 0.15 0.03 (SAG21+SAG22) / (SAG31+SAG32) -1.00 -0.89 -1.12 -0.91 -0.90 f2 / (R3-R4) -1.64 -1.96 -1.70 -1.84 -1.95 f12 / (R4-R1) 1.72 1.54 1.83 1.64 1.80 (R11+R12) / (R12-R11) 1.23 1.22 1.24 1.24 1.25 ∑AT / ∑ET 1.03 0.95 0.97 0.91 0.88 (T45+T67) / ∑AT 0.56 0.56 0.56 0.57 0.55 BFL / (∑CT-∑AT) 1.21 1.07 1.15 1.06 1.00 DT21 / DT31 1.11 1.12 1.13 1.11 1.09 (DT52-DT42) / (DT42-DT32) 2.78 3.92 3.89 3.47 3.57 ImgH*TAN(Semi-FOV) / (DT72-DT12) 1.96 1.89 1.91 1.79 1.78

[0206] Table 11

[0207] Table 12 shows the effective focal length f of the camera lenses of Examples 1 to 5, and the effective focal lengths f1 to f7 of each lens.

[0208] Parameters / Examples 1 2 3 4 5 f(mm) 6.51 6.46 6.48 5.99 6.58 f1(mm) 5.68 5.71 5.73 5.32 5.77 f2(mm) -17.09 -18.97 -16.77 -16.83 -17.61 f3(mm) 50.43 61.94 38.75 46.86 43.48 f4(mm) -52.59 -121.09 -71.52 -74.95 -54.99 f5(mm) -47.83 -31.62 -32.67 -31.39 -42.94 f6(mm) 7.04 7.06 7.04 6.58 7.21 f7(mm) -5.02 -4.96 -5.00 -4.63 -4.89 Semi-FOV(°) 44.48 44.43 44.40 44.32 43.83 TTL(mm) 7.41 7.43 7.43 6.94 7.59 ImgH(mm) 6.50 6.50 6.50 6.05 6.50 Fno 1.91 1.91 1.91 1.95 2.00

[0209] Table 12

[0210] 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 described above.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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, characterized in that: The camera lens has only seven lenses, and the seven lenses include: 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 having positive refractive power and a convex image-side surface; a fourth lens having negative optical power; a fifth lens having negative optical power, wherein the object-side surface of the fifth lens is convex, and the image-side surface of the fifth lens is concave; a sixth lens having positive refractive power, an object-side surface of the sixth lens being convex, and an image-side surface of the sixth lens being concave; a seventh lens element having negative optical power and a concave image-side surface; The first to seventh lenses include at least four meniscus lenses with convex object-side surfaces; The half of the diagonal length of the effective pixel area on the imaging surface of the camera lens ImgH, the aperture value fno of the camera lens, and the effective radius DT11 of the object side of the first lens satisfy the following conditions: 6.5 <ImgH*fno / DT11<7.5; The on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the second lens, the on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, and the on-axis distance SAG32 between the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens satisfy the following: -1.12≤(SAG21+SAG22) / (SAG31+SAG32)≤-0.

89.

2. The imaging lens according to claim 1, wherein: The half of the diagonal length of the effective pixel area on the imaging surface of the camera lens ImgH, the aperture value fno of the camera lens, and the effective radius DT11 of the object side surface of the first lens satisfy the following: 6.73≤ImgH*fno / DT11≤7.

39.

3. The camera lens according to claim 1, wherein: The on-axis distance TTL from the object side of the first lens to the imaging surface, the maximum half field angle Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy the following conditions: <TTL*TAN(Semi-FOV) / (f-f1)<11。 4. The imaging lens according to claim 3, wherein: The on-axis distance TTL from the object side of the first lens to the imaging plane, the maximum half field of view Semi-FOV of the camera lens, the effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy the following: 8.70≤TTL*TAN(Semi-FOV) / (f-f1)≤10.

08.

5. The imaging lens according to claim 1, wherein: The entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 1 <EPD / (f56-f6)<3。 6. The imaging lens according to claim 5, wherein: The entrance pupil diameter EPD of the camera lens, the effective focal length f6 of the sixth lens, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following: 1.71≤EPD / (f56-f6)≤2.

82.

7. The imaging lens according to claim 1, wherein: The camera lens also includes an aperture, which is located between the second lens and the third lens. The on-axis distance TD from the object side of the first lens to the image side of the seventh lens, the on-axis distance SD from the aperture to the image side of the seventh lens, and the sum of the edge thicknesses ∑ET from the first lens to the seventh lens satisfy the following conditions: 1.4<∑ET / (TD-SD)<2.

8. The imaging lens according to claim 7, wherein: The camera lens also includes an aperture, which is located between the second lens and the third lens. The on-axis distance TD from the object side of the first lens to the image side of the seventh lens, the on-axis distance SD from the aperture to the image side of the seventh lens, and the sum of the edge thicknesses ∑ET from the first lens to the seventh lens satisfy the following conditions: 1.49≤∑ET / (TD-SD)≤1.

76.

9. The imaging lens according to claim 1, wherein: An edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, an edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following: 0.4<(ET1+ET3+ET5) / (ET2+ET4+ET6+ET7)<0.

6.

10. The imaging lens according to claim 9, wherein: An edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, an edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following: 0.46≤(ET1+ET3+ET5) / (ET2+ET4+ET6+ET7)≤0.

55.

11. The imaging lens according to claim 1, wherein: The on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following conditions: 0<(SAG62-SAG61) / (SAG62+SAG61)<0.

2.

12. The imaging lens according to claim 11, wherein: The on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis of the camera lens to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following conditions: 0.03≤(SAG62-SAG61) / (SAG62+SAG61)≤0.

17.

13. The imaging lens according to any one of claims 1 to 12, wherein: The effective focal length f2 of the second lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: <f2 / (R3-R4)<-1.5。 14. The imaging lens according to claim 13, wherein: The effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens satisfy the following relationship: -1.96≤f2 / (R3-R4)≤-1.

64.

15. The imaging lens according to any one of claims 1 to 12, wherein: The curvature radius R1 of the object side surface of the first lens, the curvature radius R4 of the image side surface of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: 1.5 <f12 / (R4-R1)<2。 16. The imaging lens according to claim 15, wherein: The curvature radius R1 of the object-side surface of the first lens, the curvature radius R4 of the image-side surface of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy the following relationship: 1.54≤f12 / (R4-R1)≤1.

83.

17. The imaging lens according to any one of claims 1 to 12, wherein: A curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy the following relationship: 1.2<(R11+R12) / (R12-R11)<1.

3.

18. The imaging lens according to claim 17, wherein: A curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy the following relationship: 1.22≤(R11+R12) / (R12-R11)≤1.

25.

19. The imaging lens according to any one of claims 1 to 12, wherein: The sum of the air intervals ΣAT between any two adjacent lenses from the first lens to the seventh lens on the optical axis and the sum of the edge thicknesses ΣET of the first lens to the seventh lens satisfy the following: 0.8<ΣAT / ΣET<1.

1.

20. The imaging lens according to claim 19, wherein: The sum of the air intervals ΣAT between any two adjacent lenses from the first lens to the seventh lens on the optical axis and the sum of the edge thicknesses ΣET of the first lens to the seventh lens satisfy the following: 0.88≤ΣAT / ΣET≤1.

03.

21. The imaging lens according to any one of claims 1 to 12, wherein: The sum of the air intervals ∑AT on the optical axis between any two adjacent lenses from the first lens to the seventh lens, the on-axis distance T45 from the image side surface of the fourth lens to the object side surface of the fifth lens, and the on-axis distance T67 from the image side surface of the sixth lens to the object side surface of the seventh lens satisfy the following: 0.5<(T45+T67) / ∑AT<0.

6.

22. The imaging lens according to claim 21, wherein: The sum of the air intervals ∑AT on the optical axis between any two adjacent lenses from the first lens to the seventh lens, the on-axis distance T45 from the image side surface of the fourth lens to the object side surface of the fifth lens, and the on-axis distance T67 from the image side surface of the sixth lens to the object side surface of the seventh lens satisfy the following: 0.55≤(T45+T67) / ∑AT≤0.

57.

23. The imaging lens according to any one of claims 1 to 12, wherein: The sum of the center thicknesses ΣCT of the first lens to the seventh lens on the optical axis, the sum of the air intervals ΣAT of any two adjacent lenses on the optical axis from the first lens to the seventh lens, and the on-axis distance BFL from the image side surface to the imaging plane of the seventh lens satisfy the following conditions: 0.9 <BFL / (∑CT-∑AT)<1.3。 24. The imaging lens according to claim 23, wherein: The sum ΣCT of the center thicknesses of the lenses from the first to the seventh lenses on the optical axis, the sum ΣAT of the air intervals between any two adjacent lenses from the first to the seventh lenses on the optical axis, and the on-axis distance BFL from the image-side surface of the seventh lens to the imaging plane satisfy the following conditions: 1.00≤BFL / (ΣCT-ΣAT)≤1.

21.

25. The imaging lens according to any one of claims 1 to 12, wherein: The effective radius DT21 of the object side of the second lens and the effective radius DT31 of the object side of the third lens satisfy: 1 <DT21 / DT31<1.2。 26. The imaging lens according to claim 25, wherein: An effective radius DT21 of the object-side surface of the second lens and an effective radius DT31 of the object-side surface of the third lens satisfy the following: 1.09≤DT21 / DT31≤1.

13.

27. The imaging lens according to any one of claims 1 to 12, wherein: An effective radius DT32 of the image side surface of the third lens, an effective radius DT42 of the image side surface of the fourth lens, and an effective radius DT52 of the image side surface of the fifth lens satisfy the following: 2.5<(DT52-DT42) / (DT42-DT32)<4.

28. The imaging lens according to claim 27, wherein: An effective radius DT32 of the image side surface of the third lens, an effective radius DT42 of the image side surface of the fourth lens, and an effective radius DT52 of the image side surface of the fifth lens satisfy the following: 2.78≤(DT52-DT42) / (DT42-DT32)≤3.

92.

29. The imaging lens according to any one of claims 1 to 12, wherein: The effective radius DT12 of the image side of the first lens, the effective radius DT72 of the image side of the seventh lens, half the diagonal length of the effective pixel area on the imaging surface ImgH and the maximum half field of view Semi-FOV of the camera lens satisfy the following relationship: 1.5 <ImgH*TAN(Semi-FOV) / (DT72-DT12)<2。 30. The imaging lens according to claim 29, wherein: The effective radius DT12 of the image side surface of the first lens, the effective radius DT72 of the image side surface of the seventh lens, half the diagonal length of the effective pixel area on the imaging plane ImgH and the maximum half field of view Semi-FOV of the camera lens satisfy the following: 1.78≤ImgH*TAN(Semi-FOV) / (DT72-DT12)≤1.96.

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