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 having a focal power; a second lens having a positive focal power, with its object side surface being convex and its image side surface being convex; a third lens having a negative focal power, with its image side surface being concave; a fourth lens having a focal power; a fifth lens having a focal power, with its image side surface being convex; a sixth lens having a negative focal power, with its image side surface being concave; wherein, the combined focal length f12 of the first lens and the second lens and half of the maximum field of view Semi-FOV of the camera lens satisfy 1.00 mm < f12 / tan(Semi-FOV) < 4.50 mm; and the maximum field of view FOV of the camera lens satisfies 91.0° < FOV.

Description

Technical Field

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

[0002] In recent years, the manufacturing technology and functions of portable electronic devices have been developing rapidly. Currently, compared with traditional cameras, the advantages of the camera lens group on mobile phones are becoming more and more obvious. A camera lens group is usually provided on portable devices such as mobile phones so that the mobile phone has a camera function.

[0003] In a camera lens group, an image sensor of the Charge-coupled Device (CCD) type or an image sensor of the Complementary Metal Oxide Semiconductor (CMOS) type is usually provided, and a camera lens is provided. The camera lens can converge the light on the object side, and the imaging light travels along the optical path of the camera lens and irradiates onto the image sensor. Then, the image sensor converts the optical signal into an electrical signal to form image data. In order to comprehensively improve the quality of mobile phone photography for users, the mainstream camera lens group usually adopts the form of an ultra-thin large image plane lens, a telephoto lens, and then a wide-angle lens combined.

[0004] In order to meet the miniaturization requirements and imaging requirements, a camera lens that can balance miniaturization, wide angle, and good imaging quality is needed. Summary of the Invention

[0005] This application provides a camera lens applicable to portable electronic products, which can at least solve or partially solve the above-mentioned at least one disadvantage in the prior art.

[0006] In a first aspect of this application, a camera lens is provided, which sequentially includes, along the optical axis from the object side to the image side: a diaphragm; a first lens with a focal power; a second lens with a positive focal power, whose object side surface is convex and image side surface is convex; a third lens with a negative focal power, whose image side surface is concave; a fourth lens with a focal power; a fifth lens with a focal power, whose image side surface is convex; a sixth lens with a negative focal power, whose image side surface is concave; wherein, the combined focal length f12 of the first lens and the second lens and half of the maximum field of view Semi-FOV of the camera lens satisfy 1.00 mm < f12 / tan(Semi-FOV) < 4.50 mm; and the maximum field of view FOV of the camera lens satisfies 91.0° < FOV.

[0007] In one embodiment, at least one of the object side surface of the first lens to the image side surface of the sixth lens has an aspherical mirror surface.

[0008] In one embodiment, 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 region on the imaging surface may satisfy TTL / ImgH ≤ 1.61.

[0009] In one embodiment, the total effective focal length f of the imaging lens and the effective focal length f5 of the fifth lens may satisfy 0.50 < f / f5 < 3.00.

[0010] In one embodiment, the radius of curvature R6 of the image side surface of the third lens and the radius of curvature R12 of the image side surface of the sixth lens may satisfy 2.00 < (R6 + R12) / (R6 - R12) < 4.50.

[0011] In one embodiment, the effective focal length f2 of the second lens and the optical back focal length BFL of the imaging lens may satisfy 1.00 < f2 / BFL < 3.00.

[0012] In one embodiment, the effective focal length f3 of the third lens and the radius of curvature R10 of the image side surface of the fifth lens may satisfy 2.00 < f3 / R10 < 11.00.

[0013] In one embodiment, the combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f56 of the fifth lens and the sixth lens may satisfy 1.50 < (f45 + f56) / (f56 - f45) < 6.50.

[0014] In one embodiment, the central thickness CT2 of the second lens on the optical axis and the spacing distance T23 between the second lens and the third lens on the optical axis may satisfy 14.00 < CT2 / T23 < 29.00.

[0015] In one embodiment, the axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens may satisfy 1.00 < (SAG51 + SAG52) / (SAG52 - SAG51) < 2.50.

[0016] In one embodiment, the maximum effective radius DT62 of the image side surface of the sixth lens and the maximum effective radius DT11 of the object side surface of the first lens may satisfy 2.00 < DT62 / DT11 < 6.00.

[0017] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the imaging lens may satisfy 4.10 mm ≤ ImgH.

[0018] The second aspect of 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 a focal power; a second lens with a positive focal power, whose object side is convex and image side is convex; a third lens with a negative focal power, whose image side is concave; a fourth lens with a focal power; a fifth lens with a focal power, whose image side is convex; a sixth lens with a negative focal power, whose image side is concave; wherein, the effective focal length f2 of the second lens and the back focal length BFL of the camera lens satisfy 1.00 < f2 / BFL < 3.00; and the maximum field of view FOV of the camera lens satisfies 91.0° < FOV.

[0019] In one embodiment, the distance TTL from the object side 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 area on the imaging surface satisfy TTL / ImgH ≤ 1.61.

[0020] In one embodiment, the total effective focal length f of the camera lens and the effective focal length f5 of the fifth lens satisfy 0.50 < f / f5 < 3.00.

[0021] In one embodiment, the radius of curvature R6 of the image side of the third lens and the radius of curvature R12 of the image side of the sixth lens satisfy 2.00 < (R6 + R12) / (R6 - R12) < 4.50.

[0022] In one embodiment, the combined focal length f12 of the first lens and the second lens and half of the maximum field of view Semi-FOV of the camera lens group satisfy 1.00mm < f12 / tan(Semi-FOV) < 4.50mm.

[0023] In one embodiment, the effective focal length f3 of the third lens and the radius of curvature R10 of the image side of the fifth lens satisfy 2.00 < f3 / R10 < 11.00.

[0024] In one embodiment, the combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy 1.50 < (f45 + f56) / (f56 - f45) < 6.50.

[0025] In one embodiment, the central thickness CT2 of the second lens on the optical axis and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy 14.00 < CT2 / T23 < 29.00.

[0026] In one embodiment, the axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens may satisfy 1.00 < (SAG51 + SAG52) / (SAG52 - SAG51) < 2.50.

[0027] In one embodiment, the maximum effective radius DT62 of the image side surface of the sixth lens and the maximum effective radius DT11 of the object side surface of the first lens may satisfy 2.00 < DT62 / DT11 < 6.00.

[0028] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the imaging lens may satisfy 4.10 mm ≤ ImgH.

[0029] This application uses six lenses. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial distance between each lens, etc., the above-mentioned imaging lens has at least one beneficial effect such as miniaturization, wide angle, and good imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In conjunction with the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objects, and advantages of this application will become more apparent. In the drawings:

[0031] Figure 1 Shows a schematic structural diagram of an imaging lens according to Embodiment 1 of this application; Figures 2A to 2D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the imaging lens of Embodiment 1;

[0032] Figure 3 Shows a schematic structural diagram of an imaging lens according to Embodiment 2 of this application; Figures 4A to 4D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the imaging lens of Embodiment 2;

[0033] Figure 5 Shows a schematic structural diagram of an imaging lens according to Embodiment 3 of this application; Figures 6A to 6D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the imaging lens of Embodiment 3;

[0034] Figure 7 Shows a schematic structural diagram of an imaging lens according to Embodiment 4 of this application; Figures 8A to 8D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the imaging lens of Embodiment 4;

[0035] Figure 9 Shows a schematic structural diagram of a camera lens according to Embodiment 5 of the present application; Figures 10A to 10D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the camera lens of Embodiment 5;

[0036] Figure 11 Shows a schematic structural diagram of a camera lens according to Embodiment 6 of the present application; Figures 12A to 12D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the camera lens of Embodiment 6. Detailed implementation manners

[0037] 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.

[0038] 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.

[0039] In the drawings, for the sake of clarity, the thickness, dimensions, and shape of the lenses 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 examples and are not drawn to an exact scale.

[0040] In this document, 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 being 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.

[0041] It should also be understood that the terms "comprise", "comprising", "have", "including" and / or "including", 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.

[0042] Unless otherwise defined, all terms used herein (including technical and scientific terms) 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.

[0043] 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 conjunction with the embodiments.

[0044] The features, principles and other aspects of the present application will be described in detail below.

[0045] The camera lens according to an exemplary embodiment of the present application may include, for example, six lenses having optical power, 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 order from the object side to the image side along the optical axis. An air gap may be provided between any two adjacent lenses among the first lens to the sixth lens.

[0046] In an exemplary embodiment, the above camera lens may further include at least one aperture stop. The aperture stop may be disposed at an appropriate position as needed, for example, between the object side and the first lens. 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.

[0047] In an exemplary embodiment, the first lens has a positive or negative optical power; the second lens has a positive optical power, its object side may be convex, and its image side may be convex; the third lens may have a negative optical power, and its image side is concave; the fourth lens has a positive or negative optical power; the fifth lens has a positive or negative optical power, and its image side is convex; the sixth lens may have a negative optical power, and its image side is concave. The second lens with a positive optical power is beneficial for enabling the camera lens to support a larger field of view angle and enabling light to be better converged on the image side of the second lens. The third lens with a negative optical power can enable the camera lens to support a larger image plane, that is, a higher imaging plane can be obtained at the same field of view angle, and the imaging is clearer. The fourth lens with an optical power is beneficial for enabling the central light rays to be better converged on its image side and diverging the peripheral light rays, thereby enabling the camera lens to support a larger image plane.

[0048] The camera lens provided by the present application has the characteristics of a large viewing angle and a long depth of field, which can easily give the photographer a sense of distant view, and is beneficial to enhancing the appeal of the picture, making the photographer feel immersive.

[0049] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 1.00mm < f12 / tan(Semi-FOV) < 4.50mm, where f12 is the combined focal length of the first lens and the second lens, and Semi-FOV is half of the maximum field of view angle of the camera lens. By controlling this conditional formula, it is beneficial to increase the advantages of the wide-angle lens and enable it to have a wider imaging range. More specifically, f12 and Semi-FOV can satisfy 1.20mm < f12 / tan(Semi-FOV) < 4.10mm.

[0050] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula TTL / ImgH ≤ 1.61, where TTL is the distance from the object side of the first lens to the imaging plane of the camera lens on the optical axis, and ImgH is half of the diagonal length of the effective pixel region on the imaging plane. By controlling the ratio of the overall optical length to the image height, the overall size of the camera lens can be effectively shortened, which can better match various increasingly thinner electronic devices. The smaller-sized camera lens can be applied to more electronic devices and is beneficial to the miniaturization of electronic devices. It can also enable the camera lens to have better imaging quality, and the camera lens can have a wider imaging range at the same size. In addition, it is beneficial to increase the depth of field of the camera lens and make the camera lens have a stronger sense of distant view. More specifically, TTL and ImgH can satisfy 1.30 < TTL / ImgH ≤ 1.61.

[0051] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 0.50 < f / f5 < 3.00, where f is the total effective focal length of the camera lens, and f5 is the effective focal length of the fifth lens. By controlling the ratio of the total effective focal length to the effective focal length of the fifth lens within this range, it is possible to avoid the difficult shaping of the fifth lens caused by the fifth lens assuming too much light converging function, and at the same time avoid the poor imaging effect that may be caused by the too short depth of field of the camera lens. More specifically, f and f5 can satisfy 0.90 < f / f5 < 2.60.

[0052] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 2.00 < (R6 + R12) / (R6 - R12) < 4.50, where R6 is the radius of curvature of the image side of the third lens, and R12 is the radius of curvature of the image side of the sixth lens. By making the radius of curvature of the image side of the third lens and the radius of curvature of the image side of the sixth lens satisfy this formula, it is possible to avoid the processing difficulties caused by the excessive bending of the third lens and the sixth lens respectively, and at the same time enable the camera lens to have a better ability to balance chromatic aberration and distortion. More specifically, R6 and R12 satisfy 2.05 < (R6 + R12) / (R6 - R12) < 4.10.

[0053] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 1.00 < f2 / BFL < 3.00, where f2 is the effective focal length of the second lens, and BFL is the optical back focal length of the camera lens. By controlling the ratio of the effective focal length of the second lens to the optical back focal length to satisfy this range, the structural distribution of the camera lens can be made more reasonable, and the central light can be made more convergent to improve clarity. In addition, the image plane supported by the marginal light is larger, effectively exerting the advantages of a wide-angle lens. More specifically, f2 and BFL can satisfy 1.70 < f2 / BFL < 2.90.

[0054] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 2.00 < f3 / R10 < 11.00, where f3 is the effective focal length of the third lens, and R10 is the radius of curvature of the image side of the fifth lens. By controlling this conditional formula, it is beneficial to avoid too small a value of R10, thereby avoiding the processing difficulty problem of the fifth lens. At the same time, it also avoids too large a value of R10, thereby avoiding the problem of poor imaging quality caused by the camera lens being unable to support a larger field of view. More specifically, f3 and R10 can satisfy 2.80 < f3 / R10 < 10.30.

[0055] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 1.50 < (f45 + f56) / (f56 - f45) < 6.50, where f45 is the combined focal length of the fourth lens and the fifth lens, and f56 is the combined focal length of the fifth lens and the sixth lens. By controlling this conditional formula, it is beneficial to reasonably distribute the optical power of each lens, thereby facilitating the reduction of the processing difficulty of the lens, reducing the influence of processing errors on the imaging quality, and giving full play to the efficacy of each lens. More specifically, f45 and f56 can satisfy 1.90 < (f45 + f56) / (f56 - f45) < 6.15.

[0056] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 14.00 < CT2 / T23 < 29.00, where CT2 is the central thickness of the second lens on the optical axis, and T23 is the axial distance between the second lens and the third lens on the optical axis. By controlling the ratio of the central thickness of the second lens to its image-side air gap, it is beneficial to avoid the generation of ghost images between the second lens and the third lens, and enable the camera lens to have better spherical aberration correction and distortion correction functions.

[0057] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 1.00 < (SAG51 + SAG52) / (SAG52 - SAG51) < 2.50, where SAG51 is the axial distance between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, and SAG52 is the axial distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens. By controlling the ratio of the sag heights of the two mirror surfaces of the fifth lens, it is beneficial to avoid the fifth lens from being too curved, reduce its processing difficulty, while making the assembly of the camera lens more stable and reducing the assembly deformation of the camera lens. More specifically, SAG51 and SAG52 can satisfy 1.10 < (SAG51 + SAG52) / (SAG52 - SAG51) < 2.10.

[0058] In an exemplary embodiment, the camera lens of the present application can satisfy the conditional formula 2.00 < DT62 / DT11 < 6.00, where DT62 is the maximum effective radius of the image side surface of the sixth lens, and DT11 is the maximum effective radius of the object side surface of the first lens. By controlling the ratio of the aperture of the sixth lens to the aperture of the first lens within this range, it is beneficial to avoid the camera lens from being too large in size due to the too large aperture of the sixth lens, while making the assembly of the camera lens more stable. More specifically, DT62 and DT11 can satisfy 2.50 < DT62 / DT11 < 5.40.

[0059] In an exemplary embodiment, the camera lens of the present application can meet the conditional formula 91.0° < FOV, where FOV is the maximum field of view angle of the camera lens. The camera lens provided by the present application has a large field of view angle. The camera lens can accept a large angle range of images and can avoid the problem that the standard lens cannot capture the whole picture due to geographical restrictions in normal photography. When the camera lens is used, the scene range observed from a certain viewpoint is much larger than that seen by the human eye at the same viewpoint, and the depth of field is long, which can show a quite large clear range and bring a better photographing experience.

[0060] In an exemplary embodiment, the camera lens of the present application can meet the conditional formula 4.10mm ≤ ImgH, where ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the camera lens. The camera lens provided by the present application has a large image surface. A larger imaging surface is beneficial to improving the shooting quality and making the image clearer. More specifically, ImgH satisfies 4.10mm ≤ ImgH ≤ 4.30mm.

[0061] The camera lens according to the above embodiment of the present application can adopt multiple lenses, such as the six lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., the volume of the imaging system can be effectively reduced, the sensitivity 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 and applicable to portable electronic products. At the same time, the camera lens of the present application also has excellent optical properties such as a large image surface, a large viewing angle, high resolution, and good shooting effects.

[0062] 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 object side surface of the first lens to the image side surface of the sixth lens is an aspherical lens surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with 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 aberration that appears 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.

[0063] However, those skilled in the art should understand that, without departing from the technical solutions claimed in this application, the number of lenses constituting the imaging 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 embodiments, the imaging lens is not limited to including six lenses. If necessary, the imaging lens may also include other numbers of lenses.

[0064] Specific embodiments of the imaging lens applicable to the above embodiments will be further described below with reference to the accompanying drawings.

[0065] Example 1

[0066] The following will refer to Figures 1 to 2D Describe the imaging lens according to Embodiment 1 of this application. Figure 1 A schematic structural diagram of the imaging lens according to Embodiment 1 of this application is shown.

[0067] As Figure 1 shown, the imaging lens sequentially includes, from the object side to the image side along the optical axis: 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, and a filter E7.

[0068] The first lens E1 has a negative optical power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has a positive optical power, its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has a negative optical power, its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has a positive optical power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has a positive optical power, its object side surface S9 is convex, and its image side surface S10 is convex. 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. The imaging lens has an imaging surface S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0069] Table 1 shows the basic parameter table of the imaging lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0070]

[0071]

[0072] Table 1

[0073] In Embodiment 1, the value of the total effective focal length f of the camera lens is 4.12 mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.60 mm, and the value of the aperture number Fno is 1.88.

[0074] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0075]

[0076] where x is the sagitta, the distance from the vertex of the aspherical surface 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. Table 2 below gives the higher-order term coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0077] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.6199E-02 7.1312E-02 -2.2479E-01 6.0028E-01 -1.1139E+00 1.3316E+00 -9.7336E-01 3.9459E-01 -6.7903E-02 S2 -1.2774E-01 1.0619E-01 -1.5408E-01 1.9666E-01 -1.8540E-01 1.3496E-01 -6.9035E-02 2.1049E-02 -2.8399E-03 S3 -7.5395E-02 5.8508E-02 -1.0037E-01 1.1098E-01 -7.2708E-02 3.0443E-02 -7.3741E-03 7.3569E-04 1.2039E-05 S4 1.8247E-01 -5.1644E-01 8.9416E-01 -1.0586E+00 8.5469E-01 -4.5876E-01 1.5599E-01 -3.0345E-02 2.5820E-03 S5 1.4466E-01 -4.9182E-01 7.7918E-01 -8.3415E-01 6.1596E-01 -3.0379E-01 9.4763E-02 -1.6832E-02 1.2931E-03 S6 -1.2534E-02 -3.2285E-02 3.5881E-02 -1.9099E-02 5.4554E-03 -4.7509E-04 -1.9638E-04 6.6051E-05 -6.4504E-06 S7 -5.4640E-02 5.1234E-02 -4.2807E-02 2.6052E-02 -1.1587E-02 3.5619E-03 -7.0315E-04 8.3003E-05 -4.7473E-06 S8 -5.2059E-02 2.1216E-02 -1.1121E-02 5.0522E-04 2.7865E-03 -1.8872E-03 6.1383E-04 -1.0384E-04 7.3764E-06 S9 -7.8349E-03 1.7260E-02 -2.3156E-02 1.8756E-02 -9.8636E-03 3.2507E-03 -6.5346E-04 7.4229E-05 -3.6997E-06 S10 1.4033E-01 -9.6530E-02 5.4651E-02 -2.1301E-02 5.8006E-03 -1.1866E-03 1.8664E-04 -1.9440E-05 9.2469E-07 S11 5.4391E-02 -1.2510E-01 9.1230E-02 -4.0310E-02 1.1293E-02 -1.9947E-03 2.1376E-04 -1.2586E-05 3.0940E-07 S12 -1.5062E-01 4.9222E-02 -1.2253E-02 2.1511E-03 -2.5991E-04 2.1095E-05 -1.1001E-06 3.3349E-08 -4.4670E-10

[0078] Table 2

[0079] Figure 2A shows the axial chromatic aberration curve of the camera lens of Embodiment 1, which represents the deviation of the convergence focal points of light rays with different wavelengths after passing through the system. Figure 2B shows the astigmatism curve of the camera lens of Embodiment 1, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C shows the distortion curve of the camera lens of Embodiment 1, which represents the distortion magnitude values corresponding to different image heights. Figure 2D shows the lateral chromatic aberration curve of the camera lens of Embodiment 1, which represents the deviation of different image heights on the imaging surface after light rays pass through the system. According to Figures 2A to 2D it can be seen that the camera lens given in Embodiment 1 can achieve good imaging quality.

[0080] Example 2

[0081] The following refers to Figures 3 to 4D to describe the camera lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 3 shows a schematic structural diagram of the camera lens according to Embodiment 2 of the present application.

[0082] As shown Figure 3 in the figure, the camera lens sequentially includes, from the object side to the image side along the optical axis: 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, and a filter E7.

[0083] 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 positive optical power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has a negative optical power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a negative optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a positive optical power, its object side S9 is concave, and its image side S10 is convex. The sixth lens E6 has a negative optical power, its object side S11 is concave, and its image side S12 is concave. The filter E7 has an object side S13 and an image side S14. The camera lens has an imaging surface S15, and light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0084] In Embodiment 2, the value of the total effective focal length f of the camera lens is 3.83 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 5.79 mm, and the value of the f-number Fno is 2.35.

[0085] Table 3 shows the basic parameter table of the camera lens of Embodiment 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 4 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 2, and each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

[0086]

[0087] Table 3

[0088] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -7.4924E-02 4.0305E-02 -3.3108E-01 1.6188E+00 -4.6007E+00 7.9301E+00 -7.8903E+00 4.0439E+00 -7.7450E-01 S2 -1.0774E-01 6.6961E-02 -2.6468E-01 1.0665E+00 -1.9932E+00 1.7929E+00 -1.4117E-01 -8.7588E-01 4.2909E-01 S3 -7.5333E-02 -9.0227E-03 -1.9485E-02 1.7261E-01 -3.0379E-01 3.3058E-01 -2.4925E-01 1.3806E-01 -3.8882E-02 S4 -3.2952E-02 -1.8090E-01 4.2357E-01 -7.2774E-01 1.0059E+00 -1.0740E+00 7.5363E-01 -2.7406E-01 1.7846E-02 S5 -7.6768E-02 -9.5599E-02 1.7179E-01 -2.4169E-01 3.8388E-01 -4.7777E-01 3.5740E-01 -1.4072E-01 2.2493E-02 S6 -9.9436E-02 7.0550E-02 -2.0434E-01 3.7430E-01 -4.0056E-01 2.5931E-01 -9.9355E-02 2.0053E-02 -1.2781E-03 S7 -2.3534E-01 3.6506E-01 -8.0798E-01 1.4037E+00 -1.5979E+00 1.1582E+00 -5.1158E-01 1.2547E-01 -1.3145E-02 S8 -3.1690E-01 8.9919E-01 -3.2771E+00 9.3333E+00 -1.9639E+01 3.0344E+01 -3.4524E+01 2.8983E+01 -1.7887E+01 S9 -2.0469E-01 9.3552E-01 -2.9804E+00 6.5467E+00 -1.0104E+01 1.1070E+01 -8.6920E+00 4.9168E+00 -1.9988E+00 S10 5.3651E-01 -7.8323E-01 8.6829E-01 -8.4857E-01 9.8353E-01 -1.2031E+00 1.1551E+00 -7.8431E-01 3.7127E-01 S11 5.8008E-01 -1.1325E+00 1.4579E+00 -1.3233E+00 8.6133E-01 -4.0760E-01 1.4174E-01 -3.6390E-02 6.8767E-03 S12 -2.0977E-01 1.1642E-01 -5.6127E-02 2.0523E-02 -5.5160E-03 1.0909E-03 -1.6016E-04 1.7584E-05 -1.4466E-06

[0089] Table 4

[0090] Figure 4A shows the axial chromatic aberration curve of the camera lens of Embodiment 2, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the system. Figure 4B shows the astigmatism curve of the camera lens of Embodiment 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C shows the distortion curve of the camera lens of Embodiment 2, which represents the distortion magnitude values corresponding to different image heights. Figure 4D shows the lateral chromatic aberration curve of the camera lens of Embodiment 2, which represents the deviation of different image heights on the imaging surface after the light rays pass through the system. According toFigures 4A to 4D It can be seen that the camera lens given in Embodiment 2 can achieve good imaging quality.

[0091] Example 3

[0092] The following refers to Figures 5 to 6D A camera lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of the camera lens according to Embodiment 3 of the present application is shown.

[0093] As Figure 5 shown, the camera lens sequentially includes, from the object side to the image side along the optical axis: 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, and a filter E7.

[0094] 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 positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The third lens E3 has a negative optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a concave surface, and its image side surface S10 is a convex 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 camera lens has an imaging surface S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0095] In Embodiment 3, the value of the total effective focal length f of the camera lens is 3.77 mm, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.79 mm, and the value of the aperture number Fno is 2.18.

[0096] Table 5 shows the basic parameter table of the camera lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0097]

[0098] Table 5

[0099] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -8.8676E-02 3.9644E-03 -7.9707E-02 2.7444E-01 -3.5543E-01 -1.7185E-01 1.1701E+00 -1.3456E+00 5.1691E-01 S2 -1.3490E-01 2.3389E-02 -8.2445E-03 -6.3499E-02 1.1094E+00 -3.3707E+00 4.8565E+00 -3.4721E+00 9.9150E-01 S3 -7.3490E-02 -1.2847E-02 -2.2935E-04 2.0685E-01 -4.0856E-01 3.8929E-01 -1.8180E-01 2.7313E-02 5.1685E-03 S4 7.0982E-03 -8.8363E-02 1.1298E-02 1.4711E-01 -2.2715E-01 1.0789E-01 5.2042E-02 -7.5728E-02 2.5475E-02 S5 -1.1953E-01 1.2207E-01 -4.6224E-01 9.8963E-01 -1.3310E+00 1.1466E+00 -6.0888E-01 1.8220E-01 -2.3608E-02 S6 -1.6435E-01 2.1369E-01 -4.4652E-01 6.6617E-01 -6.6930E-01 4.4200E-01 -1.8169E-01 4.1091E-02 -3.3654E-03 S7 -1.3147E-01 -2.1520E-02 2.3341E-01 -4.5892E-01 5.3806E-01 -3.9408E-01 1.7678E-01 -4.3868E-02 4.5262E-03 S8 -7.9413E-02 -2.1628E-01 7.9449E-01 -1.6221E+00 2.1023E+00 -1.5782E+00 2.1121E-01 9.8638E-01 -1.2695E+00 S9 1.5820E-01 -4.3109E-01 7.9345E-01 -9.1416E-01 5.3293E-01 1.3627E-01 -5.9400E-01 6.1228E-01 -3.7777E-01 S10 -3.6501E-02 5.6980E-02 5.8383E-02 -3.7612E-01 8.5162E-01 -1.1841E+00 1.1060E+00 -7.1643E-01 3.2547E-01 S11 -2.4543E-01 1.2406E-01 3.0558E-02 -1.2188E-01 1.1350E-01 -6.2593E-02 2.3351E-02 -6.1611E-03 1.1662E-03 S12 -3.6978E-01 2.7748E-01 -1.6959E-01 7.7475E-02 -2.6163E-02 6.5573E-03 -1.2253E-03 1.7079E-04 -1.7644E-05

[0100] Table 6

[0101] Figure 6AThe axial chromatic aberration curve of the imaging lens of Embodiment 3 is shown, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the system. Figure 6B The astigmatism curve of the imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the imaging lens of Embodiment 3 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 6D The longitudinal chromatic aberration curve of the imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the system. According to Figures 6A to 6D it can be seen that the imaging lens given in Embodiment 3 can achieve good imaging quality.

[0102] Example 4

[0103] The following refers to Figures 7 to 8D and describes an imaging lens according to Embodiment 4 of the present application. Figure 7 The structural schematic diagram of the imaging lens according to Embodiment 4 of the present application is shown.

[0104] As Figure 7 shown, the imaging lens sequentially includes, from the object side to the image side along the optical axis: 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, and a filter E7.

[0105] The first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface. The second lens E2 has a positive optical power, its object side S3 is a convex surface, and its image side S4 is a convex surface. The third lens E3 has a negative optical power, its object side S5 is a convex surface, and its image side S6 is a concave surface. The fourth lens E4 has a positive optical power, its object side S7 is a concave surface, and its image side S8 is a convex surface. The fifth lens E5 has a positive optical power, its object side S9 is a concave surface, and its image side S10 is a convex surface. The sixth lens E6 has a negative optical power, its object side S11 is a convex surface, and its image side S12 is a concave surface. The filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging plane S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging plane S15.

[0106] In Embodiment 4, the value of the total effective focal length f of the imaging lens is 3.18 mm, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging plane S15 is 5.59 mm, and the value of the f-number Fno is 2.40.

[0107] Table 7 shows the basic parameter table of the camera lens of Example 4, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 8 shows the higher-order term coefficients of each aspherical mirror surface that can be used in Example 4, where each aspherical surface type can be defined by formula (1) given in the above Example 1.

[0108]

[0109]

[0110] Table 7

[0111] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.2182E-01 1.6751E-01 -2.2294E+00 1.5720E+01 -7.1480E+01 2.1351E+02 -4.0339E+02 4.3551E+02 -2.0352E+02 S2 -1.2705E-01 -6.1822E-01 5.0964E+00 -2.7801E+01 9.6612E+01 -2.0867E+02 2.7258E+02 -1.9697E+02 6.0570E+01 S3 -5.5339E-02 -1.1165E-01 -4.5523E-01 2.9600E+00 -8.0328E+00 1.3394E+01 -1.3666E+01 7.8489E+00 -1.9033E+00 S4 3.9683E-01 -2.1894E+00 6.6509E+00 -1.3814E+01 1.9466E+01 -1.8306E+01 1.1329E+01 -4.6401E+00 1.2760E+00 S5 2.1550E-01 -1.7873E+00 5.2530E+00 -1.0928E+01 1.5513E+01 -1.4496E+01 8.4499E+00 -2.7582E+00 3.8262E-01 S6 -9.6311E-02 -1.2456E-01 2.3514E-01 -2.7171E-01 2.5678E-01 -1.8263E-01 8.4735E-02 -2.2387E-02 2.6148E-03 S7 5.3791E-03 -5.9291E-01 1.4515E+00 -1.8959E+00 1.6131E+00 -9.0490E-01 3.1988E-01 -6.4302E-02 5.5823E-03 S8 5.4520E-01 -2.1848E+00 4.9652E+00 -8.0822E+00 9.7678E+00 -8.9291E+00 6.2875E+00 -3.4775E+00 1.5311E+00 S9 7.6027E-01 -2.0569E+00 3.9491E+00 -5.3876E+00 5.0274E+00 -2.8856E+00 5.5650E-01 5.9847E-01 -6.3484E-01 S10 -1.7267E-02 5.2404E-03 6.3014E-02 -1.3982E-01 1.7940E-01 -1.6826E-01 1.2271E-01 -6.8352E-02 2.8016E-02 S11 -2.4199E-01 3.5646E-02 1.3022E-01 -1.9793E-01 1.5545E-01 -7.9389E-02 2.8196E-02 -7.1549E-03 1.3075E-03 S12 -4.1690E-01 2.9342E-01 -1.7672E-01 8.0495E-02 -2.7020E-02 6.6844E-03 -1.2241E-03 1.6614E-04 -1.6626E-05

[0112] Table 8

[0113] Figure 8A shows the axial chromatic aberration curve of the camera lens of Example 4, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the system. Figure 8B shows the astigmatism curve of the camera lens of Example 4, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C shows the distortion curve of the camera lens of Example 4, which represents the distortion magnitude values corresponding to different image heights. Figure 8D shows the lateral chromatic aberration curve of the camera lens of Example 4, which represents the deviation of different image heights on the imaging plane after the light rays pass through the system. According to Figures 8A to 8D it can be known that the camera lens given in Example 4 can achieve good imaging quality.

[0114] Example 5

[0115] The following refers to Figures 9 to 10D describes the 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.

[0116] As Figure 9 shown, the camera lens sequentially includes, from the object side to the image side along the optical axis: 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, and a filter E7.

[0117] 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 positive focal power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has a negative focal power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive focal power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a positive focal power, its object side S9 is concave, and its image side S10 is convex. 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. The imaging lens has an imaging surface S15, and light from an object sequentially passes through each surface S1 to S14 and finally forms an image on the imaging surface S15.

[0118] In Example 5, the value of the total effective focal length f of the imaging lens is 4.12 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 6.57 mm, and the value of the f-number Fno is 1.52.

[0119] Table 9 shows the basic parameter table of the imaging lens of Example 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 10 shows the high-order term coefficients that can be used for each aspherical mirror surface in Example 5, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0120]

[0121] Table 9

[0122] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.3462E-02 1.8801E-02 -5.6519E-02 9.5002E-02 -1.0701E-01 7.8890E-02 -3.6577E-02 9.7179E-03 -1.1260E-03 S2 -4.9719E-02 8.9107E-03 -3.0018E-02 7.3345E-02 -1.0423E-01 9.0024E-02 -4.5927E-02 1.2859E-02 -1.5239E-03 S3 -3.6044E-02 3.4320E-03 7.9922E-03 -3.1140E-02 5.0959E-02 -4.2154E-02 1.9103E-02 -4.4761E-03 4.2209E-04 S4 9.8377E-02 -2.6415E-01 3.5723E-01 -3.2349E-01 1.9812E-01 -8.0408E-02 2.0423E-02 -2.8709E-03 1.5995E-04 S5 4.3292E-02 -1.3124E-01 1.0347E-01 -4.0879E-02 -1.2434E-03 8.8900E-03 -3.9117E-03 7.6702E-04 -6.0371E-05 S6 -6.9123E-02 9.3023E-02 -1.4961E-01 1.4398E-01 -8.7577E-02 3.3902E-02 -8.0726E-03 1.0647E-03 -5.5638E-05 S7 -5.3468E-02 2.4483E-02 1.5944E-05 -1.4602E-02 1.3507E-02 -6.3137E-03 1.6573E-03 -2.2903E-04 1.2870E-05 S8 -3.9770E-02 -3.7795E-02 8.3372E-02 -5.7824E-02 -5.2260E-02 1.5684E-01 -1.7150E-01 1.1331E-01 -4.9762E-02 S9 5.2711E-02 8.0795E-03 -2.0125E-01 5.2979E-01 -8.1071E-01 8.3505E-01 -6.0738E-01 3.1787E-01 -1.2005E-01 S10 -4.0234E-02 1.5050E-01 -2.4212E-01 2.6600E-01 -2.1316E-01 1.2613E-01 -5.4908E-02 1.7470E-02 -4.0200E-03 S11 -1.5210E-01 1.2734E-01 -1.1307E-01 7.8543E-02 -4.1253E-02 1.6433E-02 -4.9644E-03 1.1289E-03 -1.9047E-04 S12 -2.2237E-01 1.4076E-01 -8.0843E-02 3.6084E-02 -1.2017E-02 2.9642E-03 -5.4191E-04 7.3363E-05 -7.3090E-06

[0123] Table 10

[0124] Figure 10A Shows the axial chromatic aberration curve of the imaging lens of Example 5, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the system. Figure 10B Shows the astigmatism curve of the imaging lens of Example 5, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C Shows the distortion curve of the imaging lens of Example 5, which represents the distortion magnitude values corresponding to different image heights. Figure 10D Shows the lateral chromatic aberration curve of the imaging lens of Example 5, which represents the deviation of different image heights on the imaging surface after the light rays pass through the system. According to Figures 10A to 10D It can be seen that the imaging lens given in Example 5 can achieve good imaging quality.

[0125] Example 6

[0126] The following refers to Figures 11 to 12DDescribes a camera lens according to Embodiment 6 of the present application. Figure 11 Shows a schematic structural diagram of a camera lens according to Embodiment 6 of the present application.

[0127] As Figure 11 Shown, the camera lens sequentially includes, from the object side to the image side along the optical axis: 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, and a filter E7.

[0128] The first lens E1 has a positive focal power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a positive focal power, its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has a negative focal power, its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has a negative focal power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has a positive focal power, its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has a negative focal 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. The camera lens has an imaging surface S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0129] In Embodiment 6, the value of the total effective focal length f of the camera lens is 4.05 mm, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.09 mm, and the value of the f-number Fno is 2.24.

[0130] Table 11 shows the basic parameter table of the camera lens of Embodiment 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 12 shows the high-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 6, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0131]

[0132] Table 11

[0133]

[0134]

[0135] Table 12

[0136] Figure 12A Shows the axial chromatic aberration curve of the camera lens of Embodiment 6, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the system. Figure 12B Shows the astigmatism curve of the camera lens of Embodiment 6, which represents the meridional image plane curvature and the sagittal image plane curvature.Figure 12C The distortion curve of the imaging lens of Example 6 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 12D The longitudinal chromatic aberration curve of the imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the system. According to Figures 12A to 12D it can be seen that the imaging lens given in Example 6 can achieve good imaging quality.

[0137] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0138] Conditional / Example 1 2 3 4 5 6 f12 / tan(Semi - FOV)(mm) 3.02 3.01 2.87 1.23 4.08 3.05 TTL / ImgH 1.61 1.38 1.38 1.33 1.56 1.45 f / f5 1.76 2.53 1.09 0.82 1.00 2.16 (R6 + R12) / (R6 - R12) 2.54 3.90 2.89 2.09 2.51 4.04 f2 / BFL 1.74 2.46 2.20 1.68 2.84 2.38 f3 / R10 2.81 10.20 5.25 4.53 3.76 7.49 (f45 + f56) / (f56 - f45) 2.04 1.91 6.10 3.97 3.92 1.97 CT2 / T23 14.39 19.76 22.13 21.50 28.88 25.09 (SAG51 + SAG52) / (SAG52 - SAG51) 1.16 1.89 2.01 1.35 1.80 1.70 DT62 / DT11 3.10 4.32 4.16 5.33 2.59 3.97 FOV(°) 96.6 97.9 99.3 134.4 91.5 96.2 ImgH(mm) 4.10 4.20 4.20 4.20 4.20 4.20

[0139] Table 13

[0140] This application also provides an imaging device, which is provided with an electronic photosensitive element for imaging. The electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can 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 imaging lens described above.

[0141] 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 protection involved in the present application is not limited to the technical solutions 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 concept of the present application. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. 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 a positive focal power, whose object side is convex and image side is concave; A second lens with a positive focal power, whose object side is convex and image side is convex; A third lens with a negative focal power, whose object side is convex and image side is concave; A fourth lens with a focal power; A fifth lens with a positive focal power, whose object side is concave and image side is convex; A sixth lens with a negative focal power, whose image side is concave; Among them, the number of lenses with focal power in the imaging lens is six; The focal powers of the first lens and the fourth lens are opposite, or the focal powers of the first lens and the fourth lens are both positive; The combined focal length f12 of the first lens and the second lens and half of the maximum field of view Semi-FOV of the imaging lens satisfy 1.20 mm < f12 / tan(Semi-FOV) < 4.10 mm; The radius of curvature R6 of the image side of the third lens and the radius of curvature R12 of the image side of the sixth lens satisfy 2.05 < (R6 + R12) / (R6 - R12) ≤ 3.90; The central thickness CT2 of the second lens on the optical axis and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy 19.76 ≤ CT2 / T23 ≤ 28.88; and The maximum field of view FOV of the imaging lens satisfies 91.5° ≤ FOV ≤ 134.4°.

2. The camera lens according to claim 1, characterized in that The distance TTL on the optical axis from the object side of the first lens to the imaging surface of the imaging lens and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy 1.30 < TTL / ImgH ≤ 1.

56.

3. The camera lens according to claim 1, characterized in that, The total effective focal length f of the imaging lens and the effective focal length f5 of the fifth lens satisfy 0.82 ≤ f / f5 ≤ 2.

53.

4. The camera lens according to claim 1, wherein The effective focal length f2 of the second lens and the optical back focal length BFL of the imaging lens satisfy 1.68 ≤ f2 / BFL ≤ 2.

84.

5. The camera lens according to claim 1, characterized in that, The effective focal length f3 of the third lens and the radius of curvature R10 of the image side of the fifth lens satisfy 3.76 ≤ f3 / R10 ≤ 10.

20.

6. The camera lens according to claim 1, wherein The combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy 1.90 < (f45 + f56) / (f56 - f45) ≤ 6.

10.

7. The camera lens according to claim 1, characterized in that The axial distance SAG51 between the intersection of the object side of the fifth lens and the optical axis and the vertex of the effective radius of the object side of the fifth lens and the axial distance SAG52 between the intersection of the image side of the fifth lens and the optical axis and the vertex of the effective radius of the image side of the fifth lens satisfy 1.35 ≤ (SAG51 + SAG52) / (SAG52 - SAG51) ≤ 2.

01.

8. The camera lens according to claim 1, characterized in that, The maximum effective radius DT62 of the image side of the sixth lens and the maximum effective radius DT11 of the object side of the first lens satisfy 2.59 ≤ DT62 / DT11 ≤ 5.

33.

9. The camera lens according to any one of claims 1 to 8, characterized in that, Half of the diagonal length of the effective pixel area on the imaging surface of the camera lens, ImgH, satisfies 4.10 mm ≤ ImgH ≤ 4.20 mm.

Images