Camera lens

Abstract

The present application discloses a camera lens, which sequentially includes, from the object side to the image side along the optical axis: a diaphragm; a first lens with positive optical power, whose object side is convex and image side is concave; a second lens with negative optical power, whose object side is convex and image side is concave; a third lens with positive optical power; a fourth lens, whose object side is concave; a fifth lens with positive optical power, whose object side is convex and image side is concave; a sixth lens with negative optical power, whose image side is concave; wherein, the aperture value FNO of the camera lens satisfies: FNO < 1.7; and the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the camera lens satisfy: 2 < (f5 - f6) / f < 3.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and specifically, to a camera lens. Background Art

[0002] With the popular development of, for example, portable intelligent wearable electronic devices towards the intelligent direction, camera lenses have become an indispensable part of electronic devices. Portable intelligent wearable electronic devices can be applied to complex and changeable environments. For example, when the electronic device takes pictures in a dark environment, due to the weak external light, the imaging quality is usually poor.

[0003] Therefore, when the electronic device equipped with a camera lens is in a dark environment, how to make the camera lens adapt to the shooting environment in the dark environment and meet the requirements such as a large aperture and high imaging quality is one of the technical problems that need to be solved urgently by those skilled in the art. Summary of the Invention

[0004] On the one hand, the present application provides a camera lens, which sequentially includes, along the optical axis from the object side to the image side: a diaphragm; a first lens with a positive optical power, the object side surface of which is convex and the image side surface of which is concave; a second lens with a negative optical power, the object side surface of which is convex and the image side surface of which is concave; a third lens with a positive optical power; a fourth lens, the object side surface of which is concave; a fifth lens with a positive optical power, the object side surface of which is convex and the image side surface of which is concave; a sixth lens with a negative optical power, the image side surface of which is concave; wherein, the aperture value FNO of the camera lens satisfies: FNO < 1.7; and the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the camera lens satisfy: 2 < (f5 - f6) / f < 3.

[0005] In some embodiments, the object distance U of the camera lens satisfies: 50mm < U < 200mm. In some embodiments, the effective focal length f1 of the first lens satisfies: 0.7 < (f1 - f6) / (f5 - f6) ≤ 1.

[0006] In some embodiments, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: -2 < (f1 + f2) / f12 < 0.

[0007] In some embodiments, the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first 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: 0.9 < (R1 + R2) / (R3 + R4) < 1.2.

[0008] In some embodiments, the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, and the effective focal length f2 of the second lens satisfy: -1 < (R3 + R4) / f2 < -0.5.

[0009] In some embodiments, the central thickness CT3 of the third lens on the optical axis and the central thickness CT1 of the first lens on the optical axis satisfy: 0.4 < CT3 / CT1 < 1.

[0010] In some embodiments, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.8 < CT5 / CT6 < 1.2.

[0011] In some embodiments, the sum ∑CT of the central thicknesses of each of the first lens to the sixth lens on the optical axis, the sum ∑AT of the spacing distances between adjacent two of the first lens to the sixth lens on the optical axis, and the sum ∑ET of the edge thicknesses of each of the first lens to the sixth lens satisfy: 0.8 < (∑CT - ∑AT) / ∑ET ≤ 1.

[0012] In some embodiments, the distance SAG61 on the optical axis from the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, the distance SAG62 on the optical axis from 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, the distance SAG51 on the optical axis from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and the distance SAG52 on the optical axis from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens satisfy: -1 < (SAG61 - SAG62) / (SAG51 - SAG52) < 0.6.

[0013] In some embodiments, the distance SAG11 on the optical axis from the intersection of the object side surface of the first lens and the optical axis to the effective radius vertex of the object side surface of the first lens and the distance SAG12 on the optical axis from the intersection of the image side surface of the first lens and the optical axis to the effective radius vertex of the image side surface of the first lens satisfy: 1 < (SAG11 + SAG12) / (SAG11 - SAG12) < 1.2.

[0014] In some embodiments, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the imaging lens, half of the maximum field of view Semi-FOV of the imaging lens, and the distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface satisfy: 2 < ImgH × tan(Semi-FOV) / BFL < 3.

[0015] In some embodiments, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the camera lens satisfy: 2.4 < TTL × FNO / ImgH < 2.8.

[0016] In some embodiments, the maximum value AT of the spacing distances on the optical axis between two adjacent lenses among the first lens to the sixth lens MAX and the minimum value AT of the spacing distances on the optical axis between two adjacent lenses among the first lens to the sixth lens MIN satisfy: 3 < AT MAX / AT MIN < 5.

[0017] In some embodiments, the sum ∑CT of the central thicknesses on the optical axis of each of the lenses from the first lens to the sixth lens, the maximum value CT of the central thicknesses on the optical axis of each of the lenses from the first lens to the sixth lens MAX and the minimum value CT of the central thicknesses on the optical axis of each of the lenses from the first lens to the sixth lens MIN satisfy: 0.3 < (CT MAX + CT MIN ) / ∑CT < 0.5.

[0018] In some embodiments, the distance BFL from the image side surface of the sixth lens to the imaging surface of the camera lens on the optical axis and the sum ∑AT of the spacing distances on the optical axis between two adjacent lenses among the first lens to the sixth lens satisfy: 0.7 < BFL / ∑AT < 0.9.

[0019] On the other hand, the present application provides a camera lens, which sequentially includes, from the object side to the image side along the optical axis: a diaphragm; a first lens with positive optical power, whose object side surface is convex and image side surface is concave; a second lens with negative optical power, whose object side surface is convex and image side surface is concave; a third lens with negative optical power; a fourth lens, whose object side surface is concave; a fifth lens with positive optical power, whose object side surface is convex and image side surface is concave; a sixth lens with negative optical power, whose image side surface is concave; wherein, the aperture value FNO of the camera lens satisfies: FNO < 1.7; and the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the camera lens satisfy: 2.5 < (f5 - f6) / ImgH < 3.5.

[0020] In some embodiments, the object distance U of the camera lens satisfies: 50 mm < U < 200 mm.

[0021] In some embodiments, the effective focal length f1 of the first lens satisfies: 0.7 < (f1 - f6) / (f5 - f6) ≤ 1.

[0022] In some embodiments, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: -2 < (f1 + f2) / f12 < 0.

[0023] In some embodiments, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, the radius of curvature R3 of the object side surface of the second lens, and the radius of curvature R4 of the image side surface of the second lens satisfy: 0.9 < (R1 + R2) / (R3 + R4) < 1.2.

[0024] In some embodiments, the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, and the effective focal length f2 of the second lens satisfy: -1 < (R3 + R4) / f2 < -0.5.

[0025] In some embodiments, the central thickness CT3 of the third lens on the optical axis and the central thickness CT1 of the first lens on the optical axis satisfy: 0.4 < CT3 / CT1 < 1.

[0026] In some embodiments, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.8 < CT5 / CT6 < 1.2.

[0027] In some embodiments, the distance SAG61 on the optical axis from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens, the distance SAG62 on the optical axis from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens, the distance SAG51 on the optical axis from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens, and the distance SAG52 on the optical axis from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens satisfy: -1 < (SAG61 - SAG62) / (SAG51 - SAG52) < 0.6.

[0028] In some embodiments, the distance SAG11 on the optical axis from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens and the distance SAG12 on the optical axis from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens satisfy: 1 < (SAG11 + SAG12) / (SAG11 - SAG12) < 1.2.

[0029] In some embodiments, the half of the maximum field of view of the camera lens, Semi-FOV, and the distance BFL from the image side of the sixth lens to the imaging surface on the optical axis satisfy: 2 < ImgH × tan(Semi-FOV) / BFL < 3.

[0030] In some embodiments, the distance TTL from the object side of the first lens to the imaging surface on the optical axis satisfies: 2.4 < TTL × FNO / ImgH < 2.8.

[0031] In some embodiments, the maximum value AT of the axial spacing between two adjacent lenses among the first lens to the sixth lens MAX and the minimum value AT of the axial spacing between two adjacent lenses among the first lens to the sixth lens MIN satisfy: 3 < AT MAX / AT MIN < 5.

[0032] In some embodiments, the sum ∑CT of the central thicknesses of each lens among the first lens to the sixth lens on the optical axis, the maximum value CT of the central thicknesses of each lens among the first lens to the sixth lens on the optical axis MAX and the minimum value CT of the central thicknesses of each lens among the first lens to the sixth lens on the optical axis MIN satisfy: 0.3 < (CT MAX + CT MIN ) / ∑CT < 0.5.

[0033] In some embodiments, the distance BFL from the image side of the sixth lens to the imaging surface on the optical axis and the sum ∑AT of the axial spacings between two adjacent lenses among the first lens to the sixth lens satisfy: 0.7 < BFL / ∑AT < 0.9.

[0034] In some embodiments, the sum ∑CT of the central thicknesses of each lens among the first lens to the sixth lens on the optical axis, the sum ∑AT of the axial spacings between two adjacent lenses among the first lens to the sixth lens on the optical axis, and the sum ∑ET of the edge thicknesses of each lens among the first lens to the sixth lens on the optical axis satisfy: 0.8 < (∑CT - ∑AT) / ∑ET ≤ 1.

[0035] This application adopts a six-lens camera lens architecture. By reasonably distributing the optical power and surface shape of each lens, that is, by making the second lens have a negative optical power, it is beneficial to diverge the converging light from the first lens, and at the same time compensate for the chromatic aberration and spherical aberration caused by the first lens. By making the first lens have a meniscus shape with a convex object side, it is beneficial to receive and converge the light from the object side into the camera lens. By making the second lens have a meniscus shape with a convex object side, it is beneficial to smoothly transition the incident light from the first lens to the second lens while receiving the converging light refracted by the first lens, which is beneficial to reducing aberration and improving the imaging quality. By making the camera lens satisfy FNO < 1.7, it can ensure that the camera lens has a large aperture, and can enhance the light flux entering the camera lens from the object side, achieve clear imaging, and at the same time is beneficial to improving the imaging ability of the camera lens in a dark environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects, and advantages of this application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0037] Figure 1 FIG. shows a schematic structural diagram of a camera lens according to Embodiment 1 of this application;

[0038] Figures 2A to 2D FIGS. respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 1;

[0039] Figure 3 FIG. shows a schematic structural diagram of a camera lens according to Embodiment 2 of this application;

[0040] Figures 4A to 4D FIGS. respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 2;

[0041] Figure 5 FIG. shows a schematic structural diagram of a camera lens according to Embodiment 3 of this application;

[0042] Figures 6A to 6D FIGS. respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 3;

[0043] Figure 7 FIG. shows a schematic structural diagram of a camera lens according to Embodiment 4 of this application;

[0044] Figures 8A to 8D FIGS. respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 4;

[0045] Figure 9Shows a schematic structural diagram of a camera lens according to Embodiment 5 of the present application;

[0046] Figures 10A to 10D Respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 5;

[0047] Figure 11 Shows a schematic structural diagram of a camera lens according to Embodiment 6 of the present application;

[0048] Figures 12A to 12D Respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 6;

[0049] Figure 13 Shows a schematic structural diagram of a camera lens according to Embodiment 7 of the present application; and

[0050] Figures 14A to 14D Respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 7. Detailed implementation manners

[0051] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0052] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0053] In the accompanying drawings, for the sake of convenience of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only for illustration and are not drawn to an exact scale.

[0054] In this article, the paraxial region refers to the region 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 region; 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 region. The surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0055] It should also be understood that the terms "comprising", "including", "having", "containing" and / or "including having", when used in this specification, denote the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features rather than an individual element in the list. In addition, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application". Also, the term "exemplary" is intended to refer to an example or illustration.

[0056] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0057] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0058] The features, principles and other aspects of the present application will be described in detail below.

[0059] The camera lens according to an exemplary embodiment of the present application may include six lenses having optical powers, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. These six lenses are arranged in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the sixth lens.

[0060] In an exemplary embodiment, the first lens may have a positive optical power, its object side may be convex, and its image side may be concave; the second lens may have a negative optical power, its object side may be convex, and its image side may be concave; the third lens may have a positive optical power; the fourth lens may have a positive or negative optical power, and its object side may be concave; the fifth lens may have a positive optical power, its object side may be convex, and its image side may be concave; the sixth lens may have a negative optical power, and its image side may be concave. By making the second lens have a negative optical power, it is beneficial to diverge the converging light from the first lens, and at the same time compensate for the chromatic aberration and spherical aberration caused by the first lens. By making the first lens have a meniscus shape with a convex object side, it is beneficial to receive the converging light from the object side and enter it into the imaging lens. By making the second lens have a meniscus shape with a convex object side, it is beneficial to smoothly transition the incident light from the first lens to the second lens while receiving the converging light refracted from the first lens, which is beneficial to reducing aberration and improving imaging quality.

[0061] In an exemplary embodiment, the imaging lens according to the present application may satisfy: FNO < 1.7, where FNO is the aperture value of the imaging lens. The imaging lens satisfying FNO < 1.7 can ensure that the imaging lens has a large aperture, and can enhance the light flux entering the imaging lens from the object side, thereby achieving clear imaging, and at the same time being beneficial to improving the imaging ability of the imaging lens in a dark environment.

[0062] In an exemplary embodiment, the imaging lens according to the present application may satisfy: 2 < (f5 - f6) / f < 3, where f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, and f is the total effective focal length of the imaging lens. The imaging lens satisfying 2 < (f5 - f6) / f < 3 can achieve the distribution of the large optical power of, for example, the first lens at the rear part of the imaging lens, and at the same time, the fifth lens and the sixth lens can compensate and correct most of the aberrations of the entire imaging lens, ensuring the excellent final imaging quality of the imaging lens. More specifically, f5, f6, and f may further satisfy: 2.2 < (f5 - f6) / f < 2.8.

[0063] In an exemplary embodiment, the imaging lens according to the present application may satisfy: 50 mm < U < 200 mm, where U is the object distance of the imaging lens. The imaging lens satisfying 50 mm < U < 200 mm, that is, when using the imaging lens to photograph an object with an object distance in the range of 50 mm to 200 mm, can achieve better imaging ability, so that the imaging lens has the optical imaging ability of a small object distance. When the imaging lens is assembled on a smart wearable electronic device, the smart wearable electronic device can further achieve the ability to photograph complex and changing environments. Optionally, the imaging lens can also photograph a distant object (i.e., an object distance of infinity). More specifically, U may further satisfy: 70 mm < U < 170 mm.

[0064] In an exemplary embodiment, the camera lens according to the present application may satisfy: 2 < ImgH × tan(Semi - FOV) / BFL < 3, where ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the camera lens, Semi - FOV is half of the maximum field of view angle of the camera lens, and BFL is the distance from the image side of the sixth lens to the imaging surface of the camera lens on the optical axis. The camera lens satisfying 2 < ImgH × tan(Semi - FOV) / BFL < 3 is beneficial for the camera lens to still have sufficient back focal length (BFL) and the advantage of a large image surface under the premise of size limitation. More specifically, ImgH, Semi - FOV, and BFL may further satisfy: 2.1 < ImgH × tan(Semi - FOV) / BFL < 2.7.

[0065] In an exemplary embodiment, the camera lens according to the present application may satisfy: 2.4 < TTL × FNO / ImgH < 2.8, where TTL is the distance from the object side of the first lens to the imaging surface of the camera lens on the optical axis, FNO is the aperture value of the camera lens, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the camera lens. The camera lens satisfying 2.4 < TTL × FNO / ImgH < 2.8 is beneficial for miniaturizing the camera lens while maintaining a large aperture, thereby reducing the occupied volume after being assembled in an electronic device to meet the miniaturization requirements of, for example, smart wearable electronic devices. More specifically, TTL, FNO, and ImgH may further satisfy: 2.45 < TTL × FNO / ImgH < 2.7.

[0066] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.7 < (f1 - f6) / (f5 - f6) ≤ 1, where f1 is the effective focal length of the first lens, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens. The camera lens satisfying 0.7 < (f1 - f6) / (f5 - f6) ≤ 1 can reasonably distribute the optical powers of the respective lenses of the camera lens, avoid the excessive concentration of the positive optical power of the entire camera lens, and be able to compensate and correct most of the aberrations of the entire camera lens.

[0067] In an exemplary embodiment, the camera lens according to the present application may satisfy: - 2 < (f1 + f2) / f12 < 0, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f12 is the combined focal length of the first lens and the second lens. The camera lens satisfying - 2 < (f1 + f2) / f12 < 0 is beneficial for the refracted light rays in the front part of the camera lens to be relatively gentle, reducing the generation of combined aberrations. More specifically, f1, f2, and f12 may further satisfy: - 2 < (f1 + f2) / f12 < - 0.5.

[0068] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.9 < (R1 + R2) / (R3 + R4) < 1.2, where R1 is the curvature radius of the object side of the first lens, R2 is the curvature radius of the image side of the first lens, R3 is the curvature radius of the object side of the second lens, and R4 is the curvature radius of the image side of the second lens. The camera lens satisfying 0.9 < (R1 + R2) / (R3 + R4) < 1.2 can enable the second lens to compensate for most of the spherical aberration and part of the chromatic aberration caused by the first lens, which is beneficial to reducing the total aberration contribution of the first lens and the second lens to the camera lens. More specifically, R1, R2, R3, and R4 may further satisfy: 0.9 < (R1 + R2) / (R3 + R4) < 1.15.

[0069] In an exemplary embodiment, the camera lens according to the present application may satisfy: -1 < (R3 + R4) / f2 < -0.5, where R3 is the curvature radius of the object side of the second lens, and R4 is the curvature radius of the image side of the second lens. The camera lens satisfying -1 < (R3 + R4) / f2 < -0.5, combined with the second lens having a negative optical power, enables most of the various aberrations generated by the object side of the second lens to be compensated by the image side of the second lens, reducing the contribution of the second lens to the total aberration of the camera lens. More specifically, R3, R4, and f2 may further satisfy: -0.9 < (R3 + R4) / f2 < -0.5.

[0070] In an exemplary embodiment, the camera lens according to the present application may satisfy: 3 < AT MAX / AT MIN < 5, where AT MAX is the maximum value of the axial distances between two adjacent lenses among the first lens to the sixth lens, and AT MIN is the minimum value of the axial distances between two adjacent lenses among the first lens to the sixth lens. The camera lens satisfying 3 < AT MAX / AT MIN < 5 is beneficial to reasonably distribute the spatial distribution of the axial distances between adjacent lenses, making the arrangement of the camera lens compact. More specifically, AT MAX and AT MIN may further satisfy: 3.2 < AT MAX / AT MIN < 4.8.

[0071] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.3 < (CT MAX + CT MIN ) / ∑CT < 0.5, where ∑CT is the sum of the central thicknesses of each lens among the first lens to the sixth lens on the optical axis, and CTMAX is the maximum value of the central thicknesses of the first to sixth lenses on the optical axis, CT MIN is the minimum value of the central thicknesses of the first to sixth lenses on the optical axis. The imaging lens satisfies 0.3 < (CT MAX + CT MIN ) / ∑CT < 0.5, which is conducive to controlling the relative thicknesses of the respective lenses to be relatively uniform without being abrupt, avoiding the generation of large aberrations due to the excessive or too small thickness of a certain lens, and at the same time making the thickness distribution of the respective lenses uniform in the limited space of the imaging lens. More specifically, CT MAX , CT MIN and ∑CT further satisfy: 0.35 < (CT MAX + CT MIN ) / ∑CT < 0.45.

[0072] In an exemplary embodiment, the imaging lens according to the present application satisfies: 0.4 < CT3 / CT1 < 1, where CT3 is the central thickness of the third lens on the optical axis, and CT1 is the central thickness of the first lens on the optical axis. The imaging lens satisfies 0.4 < CT3 / CT1 < 1. By matching, for example, a first lens having a large optical power and a meniscus shape, it is conducive to keeping the central thickness of the third lens from being too thin and conducive to keeping the third lens within a suitable processability range. More specifically, CT3 and CT1 further satisfy: 0.4 < CT3 / CT1 < 0.9.

[0073] In an exemplary embodiment, the imaging lens according to the present application satisfies: 0.8 < CT5 / CT6 < 1.2, where CT5 is the central thickness of the fifth lens on the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis. The imaging lens satisfies 0.8 < CT5 / CT6 < 1.2, which is conducive to keeping the thicknesses of the fifth and sixth lenses relatively uniform and conducive to playing a role in compensating for some low-order astigmatism superposition while reasonably distributing the axial thickness space.

[0074] In an exemplary embodiment, the imaging lens according to the present application satisfies: 0.7 < BFL / ∑AT < 0.9, where BFL is the distance on the optical axis from the image side of the sixth lens to the imaging surface of the imaging lens, and ∑AT is the sum of the distances between adjacent two lenses among the first to sixth lenses on the optical axis. The imaging lens satisfies 0.7 < BFL / ∑AT < 0.9, which can ensure that the back focal length (BFL) is within a relatively large range on the premise of a compact structure of the imaging lens, thus being conducive to the later process assembly of the imaging lens.

[0075] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.8 < (∑CT - ∑AT) / ∑ET ≤ 1, where ∑CT is the sum of the central thicknesses of each of the first lens to the sixth lens on the optical axis, ∑AT is the sum of the spacing distances between two adjacent lenses among the first lens to the sixth lens on the optical axis, and ∑ET is the sum of the edge thicknesses of each of the first lens to the sixth lens. The camera lens satisfying 0.8 < (∑CT - ∑AT) / ∑ET ≤ 1 is beneficial for controlling the spacing distance between any two adjacent lenses from being too large, thereby making the overall camera lens compact, shortening the total length (TTL) of the camera lens, and at the same time being beneficial for keeping the thicknesses of each lens within a reasonable range and relatively uniform, which is beneficial for the molding and subsequent assembly of each lens.

[0076] In an exemplary embodiment, the camera lens according to the present application may satisfy: -1 < (SAG61 - SAG62) / (SAG51 - SAG52) < 0.6, where SAG61 is the distance on the optical axis from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens, SAG62 is the distance on the optical axis from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens, SAG51 is the distance on the optical axis from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens, and SAG52 is the distance on the optical axis from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens. The camera lens satisfying -1 < (SAG61 - SAG62) / (SAG51 - SAG52) < 0.6 is beneficial for keeping the structural bearing position spacing outside the effective radius between the fifth lens and the sixth lens within a reasonable range, which is beneficial for the assembly stability of the fifth lens and the sixth lens. More specifically, SAG61, SAG62, SAG51, and SAG52 may further satisfy: -0.8 < (SAG61 - SAG62) / (SAG51 - SAG52) < 0.55.

[0077] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1 < (SAG11 + SAG12) / (SAG11 - SAG12) < 1.2, where SAG11 is the distance from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens on the optical axis, and SAG12 is the distance from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis. When the camera lens satisfies 1 < (SAG11 + SAG12) / (SAG11 - SAG12) < 1.2, by matching the first lens with a meniscus shape having a convex object side surface, it is possible to ensure that the ratio of the central thickness to the edge thickness of the first lens is within the processable range, and at the same time, sufficient space can be reserved at the front end of the lens barrel for structural support, avoiding the compression of the space of the camera lens due to the need for lens barrel support.

[0078] In an exemplary embodiment, the camera lens according to the present application may satisfy: 2.5 < (f5 - f6) / ImgH < 3.5, where f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the camera lens. When the camera lens satisfies 2.5 < (f5 - f6) / ImgH < 3.5, it is possible to ensure a reasonable distribution of the positive and negative optical powers of the entire camera lens in the optical axis space, which is beneficial to the mutual compensation and correction of aberrations, ensuring the imaging quality, and at the same time facilitating the realization of the characteristics of a large aperture and a large image surface of the camera lens. More specifically, f5, f6, and ImgH may further satisfy: 2.7 < (f5 - f6) / ImgH < 3.4.

[0079] In an embodiment of the present application, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one of the lens surfaces from the object side surface of the first lens to the image side surface of the sixth lens is an aspherical lens surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberrations that occur during imaging as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical lens surface. Optionally, both the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are aspherical lens surfaces.

[0080] In an exemplary embodiment, the camera lens according to the present application further includes a diaphragm. For example, the diaphragm is disposed between the object side and the object surface of the first lens. Optionally, the 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.

[0081] The present application provides a camera lens with a large aperture, high-quality imaging, and excellent imaging ability in a dark environment. The camera lens according to the above-described embodiment of the present application may employ multiple lenses, such as the six lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the on-axis spacing between each lens, etc., the incident light can be effectively converged, the optical total length of the imaging system can be reduced, and the processability of the imaging system can be improved, making the camera lens more conducive to production and processing.

[0082] However, those skilled in the art should understand that without departing from the technical solution claimed in the present application, the number of lenses constituting the camera lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiment, the camera lens is not limited to including six lenses. If necessary, the camera lens may further include other numbers of lenses.

[0083] The following further describes specific embodiments of the camera lens applicable to the above-described embodiments with reference to the accompanying drawings.

[0084] Example 1

[0085] The following refers to Figures 1 to 2D Describe the camera lens according to Embodiment 1 of the present application. Figure 1 A schematic structural diagram of the camera lens according to Embodiment 1 of the present application is shown.

[0086] As Figure 1 shown, the camera lens sequentially includes a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0087] The first lens E1 has a positive focal power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a negative focal power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive focal power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a negative focal power, its object side S7 is concave, and its image side S8 is convex. The fifth lens E5 has a positive focal power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative focal power, its object side S11 is convex, and its image side S12 is concave. The filter E7 has an object side S13 and an image side S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0088] Table 1 shows the basic parameter table of the imaging lens of Example 1, where the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm).

[0089]

[0090] Table 1

[0091] In Example 1, the object side S1 of the first lens to the image side S12 of the sixth lens are all aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0092]

[0093] Among them, x is the distance sag from the vertex of the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Tables 2-1 and 2-2 below give the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 that can be used for the aspherical mirror surfaces S1-S12 in Example 1.

[0094] Surface number A4 A6 A8 A10 A12 A14 A16 S1 -1.4839E-03 6.3937E-03 -1.1328E-02 6.3087E-03 1.1183E-02 -2.3362E-02 1.7331E-02 S2 -7.2701E-02 4.1796E-02 5.5491E-02 -2.2518E-01 3.6820E-01 -3.6306E-01 2.1576E-01 S3 -1.4730E-01 1.0840E-01 -4.6080E-03 -1.0849E-02 -9.9877E-02 2.0841E-01 -1.8132E-01 S4 -8.2859E-02 3.1355E-03 5.6598E-01 -2.3578E+00 6.0425E+00 -9.7766E+00 9.6764E+00 S5 -5.3770E-02 -1.1420E-01 5.2252E-01 -2.3254E+00 6.1089E+00 -9.9606E+00 9.7876E+00 S6 -1.8216E-02 -2.1511E-01 7.7164E-01 -2.0876E+00 3.5333E+00 -3.8298E+00 2.6124E+00 S7 -7.2053E-03 -1.6127E-01 4.9916E-01 -6.6285E-01 1.8173E-01 7.4072E-01 -1.1438E+00 S8 -2.3371E-01 -9.0171E-02 9.2866E-01 -2.0963E+00 3.1006E+00 -3.4631E+00 3.0979E+00 S9 -1.9464E-01 1.0902E-01 -2.6157E-01 8.2780E-01 -1.7052E+00 2.2604E+00 -2.0377E+00 S10 8.5004E-03 5.5666E-02 -4.0305E-01 9.1619E-01 -1.2691E+00 1.1882E+00 -7.8523E-01 S11 -4.0776E-01 4.0843E-01 -5.3676E-01 6.6207E-01 -5.7697E-01 3.3886E-01 -1.3692E-01 S12 -4.0954E-01 4.0800E-01 -4.2157E-01 3.6415E-01 -2.3802E-01 1.1493E-01 -4.1092E-02

[0095] Table 2-1

[0096] Surface number A18 A20 A22 A24 A26 A28 A30 S1 -5.9414E-03 6.9393E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -7.0907E-02 9.8797E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 7.8978E-02 -1.3901E-02 0.0000E+00 0.0000E+0 0.0000E+00 .0000E+00 0.0000E+00 S4 -5.3329E+00 1.2615E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -5.2998E+00 1.2201E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.0194E+00 1.7325E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 7.8906E-01 -2.9789E-01 5.9916E-02 -5.0608E-03 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.2043E+00 1.1993E+00 -4.7860E-01 1.3429E-01 -2.4979E-02 2.7598E-03 -1.3696E-04 S9 1.2930E+00 -5.8487E-01 1.8751E-01 -4.1558E-02 6.0433E-03 -5.1781E-04 1.9786E-05 S10 3.7402E-01 -1.2907E-01 3.1987E-02 -5.5461E-03 6.3826E-04 -4.3755E-05 1.3508E-06 S11 3.8977E-02 -7.9163E-03 1.1449E-03 -1.1556E-04 7.7560E-06 -3.1179E-07 5.6901E-09 S12 1.0913E-02 -2.1435E-03 3.0667E-04 -3.1009E-05 2.0964E-06 -8.4885E-08 1.5547E-09

[0097] Table 2-2

[0098] Figure 2A Shows the axial chromatic aberration curve of the imaging lens of Example 1, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the imaging lens. Figure 2BThe chromatic aberration of magnification curve of the imaging lens of Embodiment 1 is shown, which represents the deviation of different image heights of light rays on the imaging surface via the imaging lens. Figure 2C The astigmatism curve of the imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2D The distortion curve of the imaging lens of Embodiment 1 is shown, which represents the distortion magnitude values corresponding to different field angles. According to Figures 2A to 2D it can be known that the imaging lens given in Embodiment 1 can achieve good imaging quality.

[0099] Example 2

[0100] The following is a reference to Figures 3 to 4D the imaging lens according to Embodiment 2 of the present application is described. Figure 3 The structural schematic diagram of the imaging lens according to Embodiment 2 of the present application is shown.

[0101] As Figure 3 shown, the imaging lens sequentially includes a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0102] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a negative optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a convex surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a concave surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object sequentially passes through each surface S1 to S14 and finally forms an image on the imaging surface S15.

[0103] Table 3 shows the basic parameter table of the imaging lens of Embodiment 2, where the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm). Tables 4-1 and 4-2 show the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 2, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0104]

[0105] Table 3

[0106] Surface number A4 A6 A8 A10 A12 A14 A16 S1 -1.9428E-03 1.2159E-02 -3.9745E-02 8.2426E-02 -1.0913E-01 9.2360E-02 -4.9202E-02 S2 -7.5819E-02 5.3339E-02 2.3731E-02 -1.5402E-01 2.5766E-01 -2.5086E-01 1.4460E-01 S3 -1.4915E-01 1.1038E-01 8.6468E-03 -4.8727E-02 -6.7498E-02 2.2467E-01 -2.3303E-01 S4 -8.3612E-02 7.0986E-03 5.4973E-01 -2.2774E+00 5.7882E+00 -9.3227E+00 9.2175E+00 S5 -5.5776E-02 -8.8491E-02 3.8048E-01 -1.8800E+00 5.2549E+00 -8.9528E+00 9.0851E+00 S6 -1.5842E-02 -2.2439E-01 7.9402E-01 -2.1299E+00 3.5773E+00 -3.8421E+00 2.5966E+00 S7 -6.1183E-03 -1.4898E-01 3.7682E-01 -1.9214E-01 -8.8624E-01 2.2892E+00 -2.6024E+00 S8 -2.3088E-01 -1.1755E-01 1.0673E+00 -2.5716E+00 4.2113E+00 -5.2651E+00 5.1602E+00 S9 -1.9103E-01 7.9470E-02 -1.2169E-01 4.5111E-01 -1.0538E+00 1.4929E+00 -1.4020E+00 S10 4.8742E-03 7.0687E-02 -4.2492E-01 9.3173E-01 -1.2715E+00 1.1835E+00 -7.8143E-01 S11 -4.1083E-01 4.1524E-01 -5.2781E-01 6.2114E-01 -5.2124E-01 2.9638E-01 -1.1603E-01 S12 -3.9944E-01 3.7534E-01 -3.5032E-01 2.7148E-01 -1.6135E-01 7.1981E-02 -2.4169E-02

[0107] Table 4-1

[0108]

[0109]

[0110] Table 4-2

[0111] Figure 4A shows the axial chromatic aberration curve of the camera lens of Embodiment 2, which represents the deviation of the focusing points of light rays with different wavelengths after passing through the camera lens. Figure 4B shows the lateral chromatic aberration curve of the camera lens of Embodiment 2, which represents the deviation of different image heights of light rays on the imaging surface after passing through the camera lens. Figure 4C shows the astigmatism curve of the camera lens of Embodiment 2, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 4D shows the distortion curve of the camera lens of Embodiment 2, which represents the distortion magnitude values corresponding to different field angles. According to Figures 4A to 4D it can be seen that the camera lens given in Embodiment 2 can achieve good imaging quality.

[0112] Example 3

[0113] The following refers to Figures 5 to 6D describes the camera lens according to Embodiment 3 of the present application. Figure 5 shows a schematic structural diagram of the camera lens according to Embodiment 3 of the present application.

[0114] As Figure 5 shown, the camera lens sequentially includes a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0115] The first lens E1 has a positive optical power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a negative optical power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a positive optical power, its object surface S5 is convex, and its image surface S6 is convex. The fourth lens E4 has a negative optical power, its object surface S7 is concave, and its image surface S8 is concave. The fifth lens E5 has a positive optical power, its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a negative optical power, its object surface S11 is convex, and its image surface S12 is concave. The filter E7 has an object surface S13 and an image surface S14. Light from the object sequentially passes through each surface S1 to S14 and finally forms an image on the imaging surface S15.

[0116] Table 5 shows the basic parameter table of the camera lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm). Tables 6-1 and 6-2 show the higher-order term coefficients of each aspherical mirror surface that can be used in Embodiment 3, where each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0117]

[0118] Table 5

[0119] Surface number A4 A6 A8 A10 A12 A14 A16 S1 3.7575E-03 -3.0373E-02 1.2289E-01 -2.8504E-01 4.0351E-01 -3.5325E-01 1.8518E-01 S2 -5.5940E-02 -1.8660E-02 2.2196E-01 -6.0015E-01 9.3550E-01 -8.9909E-01 5.1813E-01 S3 -1.4272E-01 6.6259E-02 4.3883E-02 5.1114E-02 -3.5175E-01 5.5901E-01 -4.3944E-01 S4 -1.0280E-01 1.9990E-01 -8.8639E-01 3.5571E+00 -8.3209E+00 1.1724E+01 -9.7688E+00 S5 -3.4153E-02 -1.7441E-01 7.6592E-01 -3.0727E+00 7.5662E+00 -1.1735E+01 1.1089E+01 S6 -1.2231E-02 -4.7670E-02 -8.8863E-03 2.4032E-02 -1.2512E-01 2.3791E-01 -1.8208E-01 S7 -7.5314E-02 1.8218E-01 -4.2877E-01 8.9806E-01 -1.4912E+00 1.8424E+00 -1.5237E+00 S8 -3.4845E-01 5.5807E-01 -9.4013E-01 1.2347E+00 -9.3685E-01 5.4760E-02 7.8547E-01 S9 -2.3196E-01 3.4162E-01 -5.3241E-01 4.7708E-01 -1.7289E-01 -1.3002E-01 2.3548E-01 S10 -2.6065E-02 1.1315E-01 -2.1534E-01 1.5122E-01 -2.1791E-02 -4.0084E-02 2.9815E-02 S11 -3.8384E-01 2.7079E-01 -1.6325E-01 7.9636E-02 -2.7371E-02 9.4838E-05 7.2594E-03 S12 -3.7132E-01 3.0889E-01 -2.4827E-01 1.6967E-01 -9.4551E-02 4.1755E-02 -1.4348E-02

[0120] Table 6-1

[0121] Surface number A18 A20 A22 A24 A26 A28 A30 S1 -5.3008E-02 6.2294E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.6377E-01 2.1761E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.7774E-01 -2.9357E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 4.4120E+00 -8.1900E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -5.8173E+00 1.2988E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 5.6745E-02 -4.4624E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 7.9506E-01 -2.5054E-01 4.3966E-02 -3.4106E-03 0.0000E+00 0.0000E+00 0.0000E+00 S8 -9.9742E-01 6.7731E-01 -2.9116E-01 8.1568E-02 -1.4496E-02 1.4889E-03 -6.7464E-05 S9 -1.7342E-01 7.8400E-02 -2.3335E-02 4.5865E-03 -5.7320E-04 4.1265E-05 -1.3022E-06 S10 -6.4787E-03 -2.3192E-03 1.9987E-03 -6.2654E-04 1.0674E-04 -9.7867E-06 3.7975E-07 S11 -4.7517E-03 1.6487E-03 -3.5619E-04 4.9459E-05 -4.3106E-06 2.1533E-07 -4.7149E-09 S12 3.7855E-03 -7.5489E-04 1.1124E-04 -1.1692E-05 8.2625E-07 -3.5082E-08 6.7460E-10

[0122] Table 6-2

[0123] Figure 6A shows the axial chromatic aberration curve of the camera lens of Embodiment 3, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the camera lens. Figure 6B shows the lateral chromatic aberration curve of the camera lens of Embodiment 3, which represents the deviation of different image heights of light rays on the imaging surface after passing through the camera lens. Figure 6C shows the astigmatism curve of the camera lens of Embodiment 3, which represents the curvature of the meridional image plane and the sagittal image plane. Figure 6D shows the distortion curve of the camera lens of Embodiment 3, which represents the distortion magnitude values corresponding to different field angles. According to Figures 6A to 6D it can be seen that the camera lens given in Embodiment 3 can achieve good imaging quality.

[0124] Example 4

[0125] The following refers to Figures 7 to 8D and describes the camera lens according to Embodiment 4 of the present application. Figure 7 shows the structural schematic diagram of the camera lens according to Embodiment 4 of the present application.

[0126] As Figure 7 shown, the camera lens sequentially includes a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0127] The first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a negative optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a negative optical power, its object side S7 is concave, and its image side S8 is convex. The fifth lens E5 has a positive optical power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative optical power, its object side S11 is convex, and its image side S12 is concave. The filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0128] Table 7 shows the basic parameter table of the imaging lens of Embodiment 4. Among them, the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm). Tables 8-1 and 8-2 show the higher-order term coefficients of the aspherical mirrors that can be used in Embodiment 4. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0129]

[0130] Table 7

[0131] Surface number A4 A6 A8 A10 A12 A14 A16 S1 1.6152E-03 -1.4226E-02 6.3301E-02 -1.5340E-01 2.2355E-01 -1.9969E-01 1.0578E-01 S2 -5.8622E-02 -9.8092E-03 1.9326E-01 -5.3059E-01 8.2065E-01 -7.7717E-01 4.3836E-01 S3 -1.3529E-01 6.4943E-02 2.4888E-02 8.0859E-02 -3.8126E-01 5.8847E-01 -4.6708E-01 S4 -8.5946E-02 9.5553E-02 -2.1430E-01 8.1985E-01 -1.5680E+00 1.4391E+00 -3.0002E-01 S5 -2.8218E-02 -2.3984E-01 1.2047E+00 -4.7936E+00 1.1723E+01 -1.8022E+01 1.6865E+01 S6 -8.0219E-03 -1.8328E-01 6.1757E-01 -1.7731E+00 3.1124E+00 -3.4695E+00 2.4364E+00 S7 -9.0711E-03 -1.6029E-01 7.2056E-01 -1.8422E+00 3.1489E+00 -3.8124E+00 3.4476E+00 S8 -2.7309E-01 1.1988E-01 6.0971E-01 -2.5123E+00 5.6495E+00 -8.5966E+00 9.3565E+00 S9 -2.2299E-01 1.8828E-01 -1.3822E-01 -6.9753E-02 1.9573E-01 -5.2226E-02 -1.8642E-01 S10 -1.2534E-02 7.1979E-02 -2.2859E-01 3.5345E-01 -4.4295E-01 4.5927E-01 -3.6565E-01 S11 -3.7756E-01 2.6314E-01 -1.1195E-01 -2.0098E-02 8.3023E-02 -7.8177E-02 4.4210E-02 S12 -3.8475E-01 3.3562E-01 -2.7675E-01 1.9203E-01 -1.0788E-01 4.7904E-02 -1.6545E-02

[0132] Table 8-1

[0133]

[0134]

[0135] Table 8-2

[0136] Figure 8A Shows the axial chromatic aberration curve of the imaging lens of Embodiment 4, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the imaging lens. Figure 8B Shows the lateral chromatic aberration curve of the imaging lens of Embodiment 4, which represents the deviation of different image heights of light rays on the imaging surface after passing through the imaging lens. Figure 8C Shows the astigmatism curve of the imaging lens of Embodiment 4, which represents the meridional image surface curvature and the sagittal image surface curvature. Figure 8D Shows the distortion curve of the imaging lens of Embodiment 4, which represents the distortion magnitude values corresponding to different field angles. According to Figures 8A to 8D It can be seen that the imaging lens given in Embodiment 4 can achieve good imaging quality.

[0137] Example 5

[0138] The following refers to Figures 9 to 10DDescribes a camera lens according to Embodiment 5 of the present application. Figure 9 Shows a schematic structural diagram of the camera lens according to Embodiment 5 of the present application.

[0139] As Figure 9 Shown, the camera lens sequentially includes a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0140] The first lens E1 has a positive optical power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a negative optical power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a positive optical power, its object surface S5 is concave, and its image surface S6 is convex. The fourth lens E4 has a negative optical power, its object surface S7 is concave, and its image surface S8 is concave. The fifth lens E5 has a positive optical power, its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a negative optical power, its object surface S11 is convex, and its image surface S12 is concave. The filter E7 has an object surface S13 and an image surface S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0141] Table 9 shows the basic parameter table of the camera lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm). Tables 10-1 and 10-2 show the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 5, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0142]

[0143] Table 9

[0144] Surface number A4 A6 A8 A10 A12 A14 A16 S1 2.1236E-03 -1.9875E-02 9.4921E-02 -2.4408E-01 3.7380E-01 -3.4815E-01 1.9203E-01 S2 -6.0512E-02 -1.5985E-02 2.0277E-01 -5.2722E-01 8.0254E-01 -7.6170E-01 4.3654E-01 S3 -1.3554E-01 6.3867E-02 -2.1391E-02 2.6842E-01 -7.1307E-01 9.1098E-01 -6.3897E-01 S4 -8.2326E-02 1.0262E-01 -3.5871E-01 1.6202E+00 -3.9525E+00 5.6961E+00 -4.8190E+00 S5 -3.8633E-02 -2.5565E-01 1.1245E+00 -3.9939E+00 8.9605E+00 -1.2841E+01 1.1367E+01 S6 -7.3907E-03 -1.1385E-01 1.7195E-01 -2.7993E-01 2.5971E-01 -6.2083E-02 -6.1372E-02 S7 -2.9811E-02 1.2939E-02 -5.9184E-02 4.5831E-01 -1.5397E+00 2.9708E+00 -3.4387E+00 S8 -3.0893E-01 3.7433E-01 -5.0014E-01 6.6806E-01 -7.6207E-01 7.5056E-01 -5.7829E-01 S9 -2.2494E-01 2.6884E-01 -3.3118E-01 1.0795E-01 2.9491E-01 -5.3988E-01 4.8368E-01 S10 -2.3619E-02 1.0443E-01 -1.8622E-01 6.8874E-02 1.1829E-01 -1.8933E-01 1.3617E-01 S11 -3.7613E-01 2.4384E-01 -7.7830E-02 -7.1262E-02 1.4019E-01 -1.2404E-01 7.0597E-02 S12 -3.6165E-01 2.9131E-01 -2.1697E-01 1.3235E-01 -6.4691E-02 2.5189E-02 -7.7992E-03

[0145] Table 10-1

[0146] Surface number A18 A20 A22 A24 A26 A28 A30 S1 -5.7454E-02 7.0489E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.3799E-01 1.8425E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 2.3736E-01 -3.6343E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 2.2030E+00 -4.1078E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -5.6433E+00 1.1991E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 4.1187E-02 -6.4913E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 2.4524E+00 -1.0667E+00 2.6148E-01 -2.7859E-02 0.0000E+00 0.0000E+00 0.0000E+00 S8 3.2076E-01 -1.2473E-01 3.3833E-02 -6.3516E-03 8.0111E-04 -6.2177E-05 2.2619E-06 S9 -2.7505E-01 1.0434E-01 -2.6261E-02 4.2002E-03 -3.8467E-04 1.5069E-05 3.9432E-08 S10 -5.9160E-02 1.6099E-02 -2.5322E-03 1.4037E-04 2.1807E-05 -4.2552E-06 2.1941E-07 S11 -2.7449E-02 7.4094E-03 -1.3869E-03 1.7665E-04 -1.4619E-05 7.0936E-07 -1.5326E-08 S12 1.9079E-03 -3.6261E-04 5.2078E-05 -5.4250E-06 3.8462E-07 -1.6525E-08 3.2346E-10

[0147] Table 10-2

[0148] Figure 10A Shows the axial chromatic aberration curve of the camera lens of Embodiment 5, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the camera lens. Figure 10B Shows the lateral chromatic aberration curve of the camera lens of Embodiment 5, which represents the deviation of different image heights of light rays on the imaging surface after passing through the camera lens. Figure 10C Shows the astigmatism curve of the camera lens of Embodiment 5, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10DThe distortion curve of the camera lens according to Embodiment 5 is shown, which represents the distortion magnitude values corresponding to different field angles of view. According to Figures 10A to 10D it can be known that the camera lens given in Embodiment 5 can achieve good imaging quality.

[0149] Example 6

[0150] The following will refer to Figures 11 to 12D and describe the camera lens according to Embodiment 6 of the present application. Figure 11 The structural schematic diagram of the camera lens according to Embodiment 6 of the present application is shown.

[0151] As Figure 11 shown, the camera lens sequentially includes a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0152] The first lens E1 has a positive focal power, its object surface S1 is a convex surface, and its image surface S2 is a concave surface. The second lens E2 has a negative focal power, its object surface S3 is a convex surface, and its image surface S4 is a concave surface. The third lens E3 has a positive focal power, its object surface S5 is a convex surface, and its image surface S6 is a convex surface. The fourth lens E4 has a negative focal power, its object surface S7 is a concave surface, and its image surface S8 is a convex surface. The fifth lens E5 has a positive focal power, its object surface S9 is a convex surface, and its image surface S10 is a concave surface. The sixth lens E6 has a negative focal power, its object surface S11 is a convex surface, and its image surface S12 is a concave surface. The filter E7 has an object surface S13 and an image surface S14. The light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0153] Table 11 shows the basic parameter table of the camera lens according to Embodiment 6, where the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm). Tables 12-1 and 12-2 show the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 6, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0154]

[0155] Table 11

[0156] Surface number A4 A6 A8 A10 A12 A14 A16 S1 5.6233E-03 -4.4417E-02 1.6957E-01 -3.8101E-01 5.2666E-01 -4.5440E-01 2.3675E-01 S2 -8.0849E-02 2.3168E-02 1.9933E-01 -6.0387E-01 9.4443E-01 -9.0106E-01 5.1817E-01 S3 -1.7215E-01 1.1160E-01 2.1301E-01 -6.1368E-01 7.8648E-01 -6.0471E-01 2.8545E-01 S4 -1.2684E-01 3.1952E-01 -1.3181E+00 5.2695E+00 -1.2838E+01 1.8958E+01 -1.6646E+01 S5 -5.1732E-02 -8.7401E-02 4.0043E-01 -1.6085E+00 3.9883E+00 -6.2199E+00 5.8332E+00 S6 -6.9855E-02 8.4561E-02 -3.1363E-01 6.1403E-01 -7.9062E-01 6.2808E-01 -2.9255E-01 S7 -1.1638E-01 2.7330E-01 -5.7081E-01 9.9820E-01 -1.1285E+00 8.2019E-01 -3.7555E-01 S8 -2.9389E-01 3.2311E-01 -2.7992E-01 1.8348E-01 -2.2225E-02 -4.7877E-02 2.9357E-02 S9 -1.2071E-01 1.0988E-02 2.2586E-01 -7.4494E-01 1.2861E+00 -1.4343E+00 1.1059E+00 S10 1.1570E-03 -2.1007E-02 4.4861E-02 -1.8952E-01 3.3063E-01 -3.3736E-01 2.2934E-01 S11 -3.9292E-01 3.0090E-01 -2.3433E-01 2.0155E-01 -1.7858E-01 1.2511E-01 -6.1424E-02 S12 -4.0762E-01 3.6008E-01 -3.0008E-01 2.0982E-01 -1.1854E-01 5.2427E-02 -1.7761E-02

[0157] Table 12-1

[0158]

[0159]

[0160] Table 12-2

[0161] Figure 12A Shows the axial chromatic aberration curve of the camera lens of Embodiment 6, which represents the deviation of the focusing points of light rays of different wavelengths after passing through the camera lens. Figure 12B Shows the lateral chromatic aberration curve of the camera lens of Embodiment 6, which represents the deviation of different image heights of light rays on the imaging surface after passing through the camera lens. Figure 12C Shows the astigmatism curve of the camera lens of Embodiment 6, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 12D Shows the distortion curve of the camera lens of Embodiment 6, which represents the distortion magnitude values corresponding to different field angles. According to Figures 12A to 12D It can be seen that the camera lens given in Embodiment 6 can achieve good imaging quality.

[0162] Example 7

[0163] The following refers to Figures 13 to 14D Describes a camera lens according to Embodiment 7 of the present application. Figure 13 Shows a schematic structural diagram of the camera lens according to Embodiment 7 of the present application.

[0164] As Figure 13 Shown, the camera lens sequentially includes a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15 from the object side to the image side.

[0165] The first lens E1 has a positive optical power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has a negative optical power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has a positive optical power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has a positive optical power, its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has a negative optical power, its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through each surface S1 to S14 and finally forms an image on the imaging surface S15.

[0166] Table 13 shows the basic parameter table of the camera lens of Embodiment 7, where the units of the radius of curvature, thickness / distance, focal length, and effective radius are all millimeters (mm). Tables 14-1 and 14-2 show the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 7, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0167]

[0168] Table 13

[0169]

[0170]

[0171] Table 14-1

[0172] Surface number A18 A20 A22 A24 A26 A28 A30 S1 -6.6973E-02 7.9235E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.5426E-01 2.0379E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.0066E-01 1.3106E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 8.4987E+00 -1.7042E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.8129E+00 -2.7575E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -4.1150E-02 7.5398E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 8.6203E-02 -8.7619E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -1.6879E-02 1.1372E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -2.0013E+00 8.7090E-01 -2.6220E-01 5.2751E-02 -6.6570E-03 4.6406E-04 -1.2943E-05 S10 5.5217E-02 -2.7993E-02 9.5826E-03 -2.2101E-03 3.2717E-04 -2.7950E-05 1.0446E-06 S11 -4.6372E-02 1.0047E-02 -1.5091E-03 1.5421E-04 -1.0231E-05 3.9739E-07 -6.8598E-09 S12 -6.8225E-03 1.2923E-03 -1.7140E-04 1.5460E-05 -8.9377E-07 2.9351E-08 -4.0338E-10

[0173] Table 14-2

[0174] Figure 14A The axial chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the camera lens. Figure 14B The lateral chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of different image heights of light rays on the imaging surface after passing through the camera lens. Figure 14C The astigmatism curve of the camera lens of Example 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14D The distortion curve of the camera lens of Example 7 is shown, which represents the distortion magnitude values corresponding to different field angles. According to Figures 14A to 14D It can be seen that the camera lens given in Example 7 can achieve good imaging quality.

[0175] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 15 and Table 16.

[0176] Example parameters 1 2 3 4 5 6 7 f (mm) 4.39 4.34 4.24 4.32 4.30 4.26 4.31 Semi-FOV (°) 36.64 36.67 37.43 37.47 37.47 37.45 37.46 TTL (mm) 5.31 5.27 5.30 5.30 5.30 5.30 5.30 ImgH (mm) 3.41 3.37 3.48 3.48 3.48 3.48 3.48 FNO 1.68 1.67 1.64 1.67 1.66 1.65 1.67

[0177] Table 15

[0178]

[0179]

[0180] Table 16

[0181] The present application also provides an imaging device, the electronic photosensitive element of which may be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS). The imaging device may be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the camera lens described above.

[0182] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, a technical solution formed by mutually replacing the above features with technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A camera lens, characterized in that, It sequentially includes, from the object side to the image side along the optical axis: A diaphragm; A first lens with positive optical power, whose object side is convex and image side is concave; A second lens with negative optical power, whose object side is convex and image side is concave; A third lens with positive optical power; A fourth lens, whose object side is concave; A fifth lens with positive optical power, whose object side is convex and image side is concave; A sixth lens with negative optical power, whose image side is concave; Wherein, the aperture value FNO of the camera lens satisfies: 1.64 ≤ FNO < 1.7; and The effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the camera lens satisfy: 2.38 ≤ (f5 - f6) / f < 2.8; The radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R3 of the object side of the second lens, and the radius of curvature R4 of the image side of the second lens satisfy: 0.9 < (R1 + R2) / (R3 + R4) < 1.15; The number of lenses with optical power in the camera lens is six.

2. The camera lens according to claim 1, wherein, The object distance U of the camera lens satisfies: 80 mm ≤ U ≤ 150 mm.

3. The camera lens according to claim 1, wherein, The effective focal length f1 of the first lens satisfies: 0.7 < (f1 - f6) / (f5 - f6) ≤ 1.

4. The imaging lens according to claim 1, wherein, The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: -2 < (f1 + f2) / f12 ≤ -1.

00.

5. The imaging lens according to claim 1, wherein, The radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens, and the effective focal length f2 of the second lens satisfy: -0.77 ≤ (R3 + R4) / f2 < -0.

5.

6. The imaging lens according to claim 1, wherein The central thickness CT3 of the third lens on the optical axis and the central thickness CT1 of the first lens on the optical axis satisfy: 0.4 < CT3 / CT1 < 0.

9.

7. The imaging lens according to claim 1, wherein, The central thickness CT5 of the fifth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.87 ≤ CT5 / CT6 < 1.

2.

8. The imaging lens according to claim 1, wherein, The distance SAG61 on the optical axis from the intersection of the object side of the sixth lens and the optical axis to the vertex of the effective radius of the object side of the sixth lens, the distance SAG62 on the optical axis from the intersection of the image side of the sixth lens and the optical axis to the vertex of the effective radius of the image side of the sixth lens, the distance SAG51 on the optical axis from the intersection of the object side of the fifth lens and the optical axis to the vertex of the effective radius of the object side of the fifth lens, and the distance SAG52 on the optical axis from the intersection of the image side of the fifth lens and the optical axis to the vertex of the effective radius of the image side of the fifth lens satisfy: -0.72 ≤ (SAG61 - SAG62) / (SAG51 - SAG52) < 0.

55.

9. The imaging lens according to claim 1, wherein, The distance SAG11 from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens on the optical axis and the distance SAG12 from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis satisfy: 1.10 ≤ (SAG11 + SAG12) / (SAG11 - SAG12) < 1.

2.

10. The imaging lens according to any one of claims 1 to 9, wherein, Half of the diagonal length ImgH of the effective pixel area on the imaging surface of the imaging lens, half of the maximum field of view angle Semi-FOV of the imaging lens, and the distance BFL from the image side surface of the sixth lens to the imaging surface on the optical axis satisfy: 2.20 ≤ ImgH × tan(Semi-FOV) / BFL ≤ 2.

50.

11. The imaging lens according to any one of claims 1 to 9, wherein, The distance TTL from the object side surface of the first lens to the imaging surface of the imaging lens on the optical axis and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the imaging lens satisfy: 2.45 < TTL × FNO / ImgH ≤ 2.

61.

12. The imaging lens according to any one of claims 1 to 9, wherein, The maximum value AT of the axial spacing between two adjacent lenses among the first lens to the sixth lens MAX and the minimum value AT of the axial spacing between two adjacent lenses among the first lens to the sixth lens MIN satisfy: 3.37 ≤ AT MAX / AT MIN ≤ 4.54。 13. The imaging lens according to any one of claims 1 to 9, wherein, The sum ∑CT of the central thicknesses of each of the first lens to the sixth lens on the optical axis, the maximum value CT of the central thicknesses of each of the first lens to the sixth lens on the optical axis MAX and the minimum value CT of the central thicknesses of each of the first lens to the sixth lens on the optical axis MIN Satisfy: 0.35 < (CT MAX + CT MIN ) / ∑CT < 0.

45.

14. The imaging lens according to any one of claims 1 to 9, wherein, The distance BFL from the image side surface of the sixth lens to the imaging surface of the imaging lens on the optical axis and the sum ∑AT of the spacing distances on the optical axis between two adjacent lenses from the first lens to the sixth lens satisfy: 0.77 ≤ BFL / ∑AT < 0.

9.

15. The imaging lens according to any one of claims 1 to 9, wherein, The sum ∑CT of the central thicknesses on the optical axis of each lens from the first lens to the sixth lens, the sum ∑AT of the spacing distances on the optical axis between two adjacent lenses from the first lens to the sixth lens, and the sum ∑ET of the edge thicknesses of each lens from the first lens to the sixth lens satisfy: 0.88 ≤ (∑CT - ∑AT) / ∑ET ≤ 1.

16. An imaging lens, characterized in that, In order from the object side to the image side along the optical axis, it includes: A diaphragm; A first lens with positive refractive power, whose object side surface is convex and image side surface is concave; A second lens with negative refractive power, whose object side surface is convex and image side surface is concave; A third lens with positive refractive power; A fourth lens, whose object side surface is concave; A fifth lens with positive refractive power, whose object side surface is convex and image side surface is concave; A sixth lens with negative refractive power, whose image side surface is concave; Wherein, the aperture value FNO of the imaging lens satisfies: 1.64 ≤ FNO < 1.7; and The effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the imaging lens satisfy: 2.94 ≤ (f5 - f6) / ImgH < 3.4; The effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the imaging lens satisfy: 2.38 ≤ (f5 - f6) / f < 2.8; The radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, the radius of curvature R3 of the object side surface of the second lens, and the radius of curvature R4 of the image side surface of the second lens satisfy: 0.9 < (R1 + R2) / (R3 + R4) < 1.15; The number of lenses with optical power in the camera lens is six.

17. The imaging lens according to claim 16, wherein, The object distance U of the camera lens satisfies: 80 mm ≤ U ≤ 150 mm.

18. The imaging lens according to claim 16, wherein, The effective focal length f1 of the first lens satisfies: 0.7 < (f1 - f6) / (f5 - f6) ≤ 1.

19. The imaging lens according to claim 16, wherein, The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the combined focal length f12 of the first lens and the second lens satisfy: -2 < (f1 + f2) / f12 ≤ -1.

00.

20. The imaging lens according to claim 16, wherein, The radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens, and the effective focal length f2 of the second lens satisfy: -0.77 ≤ (R3 + R4) / f2 < -0.

5.

21. The imaging lens according to claim 16, wherein, The central thickness CT3 of the third lens on the optical axis and the central thickness CT1 of the first lens on the optical axis satisfy: 0.4 < CT3 / CT1 < 0.

9.

22. The imaging lens according to claim 16, wherein, The central thickness CT5 of the fifth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.87 ≤ CT5 / CT6 < 1.

2.

23. The imaging lens according to claim 16, wherein, The distance SAG61 on the optical axis from the intersection of the object side of the sixth lens and the optical axis to the vertex of the effective radius of the object side of the sixth lens, the distance SAG62 on the optical axis from the intersection of the image side of the sixth lens and the optical axis to the vertex of the effective radius of the image side of the sixth lens, the distance SAG51 on the optical axis from the intersection of the object side of the fifth lens and the optical axis to the vertex of the effective radius of the object side of the fifth lens, and the distance SAG52 on the optical axis from the intersection of the image side of the fifth lens and the optical axis to the vertex of the effective radius of the image side of the fifth lens satisfy: -0.72 ≤ (SAG61 - SAG62) / (SAG51 - SAG52) < 0.

55.

24. The imaging lens according to claim 16, wherein, The distance SAG11 on the optical axis from the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens and the distance SAG12 on the optical axis from the intersection of the image side of the first lens and the optical axis to the vertex of the effective radius of the image side of the first lens satisfy: 1.10 ≤ (SAG11 + SAG12) / (SAG11 - SAG12) < 1.

2.

25. The imaging lens according to any one of claims 16 to 24, wherein, Half of the maximum field of view Semi-FOV of the camera lens and the distance BFL on the optical axis from the image side of the sixth lens to the imaging surface satisfy: 2.20 ≤ ImgH × tan(Semi-FOV) / BFL ≤ 2.

50.

26. The imaging lens according to any one of claims 16 to 24, wherein, The distance TTL on the optical axis from the object side of the first lens to the imaging surface satisfies: 2.45 < TTL × FNO / ImgH ≤ 2.

61.

27. The imaging lens according to any one of claims 16 to 24, wherein, The maximum value ATMAX of the spacing distance on the optical axis between two adjacent lenses among the first lens to the sixth lens and the minimum value ATMIN of the spacing distance on the optical axis between two adjacent lenses among the first lens to the sixth lens satisfy: 3.37 ≤ AT MAX / AT MIN ≤ 4.54。 28. The imaging lens according to any one of claims 16 to 24, wherein, The sum ∑CT of the central thicknesses of each of the first to sixth lenses on the optical axis, the maximum value CTMAX of the central thicknesses of each of the first to sixth lenses on the optical axis, and the minimum value CTMIN of the central thicknesses of each of the first to sixth lenses on the optical axis satisfy: 0.35 < (CTMAX + CTMIN) / ∑CT < 0.

45.

29. The imaging lens according to any one of claims 16 to 24, wherein, The distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface and the sum ∑AT of the spacing distances on the optical axis between two adjacent lenses among the first to sixth lenses satisfy: 0.77 ≤ BFL / ∑AT < 0.

9.

30. The imaging lens according to any one of claims 16 to 24, wherein, The sum ∑CT of the central thicknesses of each of the first to sixth lenses on the optical axis, the sum ∑AT of the spacing distances on the optical axis between two adjacent lenses among the first to sixth lenses, and the sum ∑ET of the edge thicknesses of each of the first to sixth lenses satisfy: 0.88 ≤ (∑CT - ∑AT) / ∑ET ≤ 1.

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