Camera lens

Abstract

The application discloses a camera lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence from the object side to the image side along the optical axis. The first lens has negative refractive power; the second lens has positive refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; the third lens has positive refractive power, the object side surface is a convex surface; the fourth lens has negative refractive power, the image side surface is a concave surface; the fifth lens has positive refractive power; the sixth lens has negative refractive power, at least one of the object side surface and the image side surface has an inflection point, the sum of the central thicknesses of the first lens to the sixth lens on the optical axis ∑CT, 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 7 < ∑CT × (R3 + R4) < 11; and the curvature radius R5 of the object side surface of the third lens and the curvature radius R8 of the image side surface of the fourth lens satisfy |R5 - R8| / |R5 + R8| < 1.

Description

[0001] Divisional Application Declaration

[0002] This application is a divisional application of the application for Chinese Patent Application No. 201810560630.2 filed on May 25, 2018, entitled “Camera Lens”, and claims the priority benefit of the filing date. TECHNICAL FIELD

[0003] The present application relates to a camera lens, and more particularly, to a camera lens including six lenses. BACKGROUND

[0004] With the diversified development of smart phones, consumers have increasingly high requirements for the photographing function carried by smart phones, and the photographing function of most high-end phones on the market is also increasingly powerful. In order to meet the market demand, the camera lens of the phone not only needs to have characteristics such as high pixels, high resolution, and high relative brightness, but also needs to have a large field of view angle, and at the same time, should have a small size to meet the development demand of ultra-thin smart products. SUMMARY

[0005] The present application provides a camera lens that can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art.

[0006] The present application provides a camera lens, which includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens can have a negative refractive power; the second lens can have a positive refractive power, the object side surface of which can be convex, and the image side surface of which can be concave; the third lens can have a positive refractive power, the object side surface of which can be convex; the fourth lens can have a negative refractive power, the image side surface of which can be concave; the fifth lens can have a positive refractive power; the sixth lens can have a negative refractive power, at least one of the object side surface and the image side surface of which can have an inflection point, the sum of the center thicknesses of the first lens to the sixth lens on the optical axis ∑CT, 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 7 < ∑CT × (R3 + R4) < 11; and the curvature radius R5 of the object side surface of the third lens and the curvature radius R8 of the image side surface of the fourth lens satisfy |R5 - R8| / |R5 + R8| < 1.

[0007] In an embodiment, the interval distance T45 of the fourth lens and the fifth lens on the optical axis and the combined focal length f45 of the fourth lens and the fifth lens satisfy 0 < T45 / f45 × 10 < 0.5.

[0008] In an embodiment, the total effective focal length f of the camera lens and the center thickness CT3 of the third lens on the optical axis satisfy 3 < f / CT3 < 5.

[0009] In one embodiment, a maximum effective radius DT12 of the image side surface of the first lens satisfies 1 < DT12 / SAG12 < 3.

[0010] In one embodiment, an on-axis distance SAG52 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 satisfies |SAG52| / CT5 < 1.

[0011] In one embodiment, a central thickness CT3 of the third lens on the optical axis satisfies 0 < CT3 / CT6 < 3.

[0012] In one embodiment, a half of the diagonal length of the effective pixel area on the imaging surface of the camera lens ImgH satisfies 1 < ImgH / DT52 < 4.

[0013] In one embodiment, a half of the maximum half field of view HFOV of the camera lens satisfies HFOV ≥ 55°.

[0014] In one embodiment, a distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis satisfies 1.6 < TTL / ImgH < 2.

[0015] In one embodiment, a total effective focal length f of the camera lens, a combined focal length f34 of the third lens and the fourth lens, and a combined focal length f56 of the fifth lens and the sixth lens satisfy |f / f34| + |f / f56| < 2.

[0016] In one embodiment, a total effective focal length f of the camera lens and a combined focal length f123 of the first lens, the second lens and the third lens satisfy f / f123 < 2.5.

[0017] The camera lens with six lenses has at least one of the following advantages: thin, large field of view, high imaging quality, and low sensitivity. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, when read in conjunction with the accompanying drawings. In the drawings:

[0019] FIG. 1 A structure schematic diagram of a camera lens according to Embodiment 1 of the present application is shown;

[0020] FIG. 2A to FIG. 2DThe on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 1 are shown respectively;

[0021] FIG. 3 The structural schematic diagram of the camera lens according to embodiment 2 of the application is shown;

[0022] FIG. 4A to FIG. 4D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 2 are shown respectively;

[0023] FIG. 5 The structural schematic diagram of the camera lens according to embodiment 3 of the application is shown;

[0024] FIG. 6A to FIG. 6D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 3 are shown respectively;

[0025] FIG. 7 The structural schematic diagram of the camera lens according to embodiment 4 of the application is shown;

[0026] FIG. 8A to FIG. 8D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 4 are shown respectively;

[0027] FIG. 9 The structural schematic diagram of the camera lens according to embodiment 5 of the application is shown;

[0028] FIG. 10A to FIG. 10D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 5 are shown respectively;

[0029] FIG. 11 The structural schematic diagram of the camera lens according to embodiment 6 of the application is shown;

[0030] FIG. 12A to FIG. 12D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 6 are shown respectively;

[0031] FIG. 13 The structural schematic diagram of the camera lens according to embodiment 7 of the application is shown;

[0032] FIG. 14A to FIG. 14D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the relative aperture chromatic aberration curve of the camera lens of embodiment 7 are shown respectively. DETAILED DESCRIPTION

[0033] For a better understanding of the present application, various aspects of the present application will be presented in more detail by referring to the attached drawings. It should be understood that these detailed descriptions are merely descriptive of exemplary embodiments of the present application and are not intended in any way to limit the scope of the present application. Throughout the specification, like drawing reference numerals refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0034] It should be noted that the terms first, second, third, etc. are used herein only to distinguish one feature from another, and do not denote any limitation on the features. Thus, the first lens discussed below can also be referred to as a second lens or a third lens without departing from the teachings of the present application.

[0035] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0036] Herein, the paraxial region refers to a region near the optical axis. If a 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 a 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. In each lens, the surface closer to the object side is referred to as the object side surface of the lens, and the surface closer to the image side is referred to as the image side surface of the lens.

[0037] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", when used in this specification, specify the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. Furthermore, when describing the embodiments of the present application, the use of "may" means that one or more embodiments of the present application. Also, the word "exemplary" is intended to mean an example or an illustration.

[0038] 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 will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an overly literal or overly formal sense unless expressly so defined herein.

[0039] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0040] The features, principles and other aspects of the present application will be described in detail below.

[0041] The camera lens according to the exemplary embodiments of the present application can include, for example, six lenses with refractive powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The six lenses are arranged in order from an object side to an image side along an optical axis, and each adjacent lenses have an air gap therebetween.

[0042] In the exemplary embodiments, the first lens can have a negative refractive power; the second lens can have a positive refractive power, the object side surface of which can be a convex surface, and the image side surface of which can be a concave surface; the third lens can have a positive refractive power, the object side surface of which can be a convex surface; the fourth lens can have a negative refractive power, the image side surface of which can be a concave surface; the fifth lens can have a positive refractive power; and the sixth lens can have a negative refractive power, at least one of the object side surface and the image side surface of which has at least one inflection point.

[0043] In the exemplary embodiments, the image side surface of the third lens can be a convex surface.

[0044] In the exemplary embodiments, the image side surface of the fifth lens can be a convex surface.

[0045] In the exemplary embodiments, the camera lens of the present application can satisfy a condition formula HFOV≥55°, wherein HFOV is half of the maximum field of view angle of the camera lens. More specifically, HFOV can further satisfy 58.1°≤HFOV≤58.6°. By optimizing the camera lens, the maximum field of view angle of the system is greater than 110 degrees to achieve the wide-angle characteristics of the system.

[0046] In the exemplary embodiments, the camera lens of the present application can satisfy a condition formula 3<f / CT3<5, wherein f is the total effective focal length of the camera lens, and CT3 is the center thickness of the third lens on the optical axis. More specifically, f and CT3 can further satisfy 3<f / CT3<4, for example, 3.23≤f / CT3≤3.97. By restricting the ratio of the total effective focal length of the camera lens and the center thickness of the third lens on the optical axis, the machining characteristics of the third lens and the spherical aberration contribution rate of the third lens can be reasonably ensured, so that the system has good imaging performance on the axis.

[0047] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 7 < ∑CT x (R3 + R4) < 11, where ∑CT is the sum of the center thicknesses of the first to sixth lenses on the optical axis, R3 is the radius of curvature of the object side surface of the second lens, and R4 is the radius of curvature of the image side surface of the second lens. More specifically, ∑CT, R3 and R4 can further satisfy 7.63 ≤ ∑CT x (R3 + R4) ≤ 10.68. By restricting the ratio of the sum of the center thicknesses of the first to sixth lenses on the optical axis to the sum of the radii of curvature of the object side surface and the image side surface of the second lens, the contribution of the second lens to the astigmatism of the camera lens can be reasonably controlled.

[0048] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1.6 < TTL / ImgH < 2, where TTL is the on-axis distance from the object side surface of the first lens to the imaging surface of the camera lens, and ImgH is half the diagonal length of the effective pixel area on the imaging surface of the camera lens. More specifically, TTL and ImgH can further satisfy 1.7 < TTL / ImgH < 1.9, for example 1.77 ≤ TTL / ImgH ≤ 1.79. By controlling the ratio of the total optical length of the camera lens to the image height, the camera lens can be made thin and high-pixel.

[0049] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula |f / f34| + |f / f56| < 2, where f is the total effective focal length of the camera lens, f34 is the combined focal length of the third and fourth lenses, and f56 is the combined focal length of the fifth and sixth lenses. More specifically, f, f34 and f56 can further satisfy |f / f34| + |f / f56| < 1.5, for example 1.24 ≤ |f / f34| + |f / f56| ≤ 1.37. By restricting f34 and f56 within a certain range, the optical power of the system can be reasonably distributed, so that the system has good imaging quality and effectively reduces the sensitivity of the system.

[0050] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1 < DT12 / SAG12 < 3, where DT12 is the maximum effective radius of the image side surface of the first lens, and SAG12 is the on-axis distance 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. More specifically, DT12 and SAG12 can further satisfy 1.8 < DT12 / SAG12 < 2.6, for example 1.96 ≤ DT12 / SAG12 ≤ 2.44. Satisfying the condition formula 1 < DT12 / SAG12 < 3 can reasonably control the chief ray incidence angle on the image side surface of the first lens, so that the camera lens has a higher matching degree with the chip in terms of the chief ray incidence angle.

[0051] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula f / f123<2.5, wherein f is the total effective focal length of the camera lens, and f123 is the combined focal length of the first lens, the second lens and the third lens. More specifically, f and f123 can further satisfy 1

[0052] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula |SAG52| / CT5<1, wherein SAG52 is the on-axis distance from the intersection of the fifth lens image side surface and the optical axis to the effective radius vertex of the fifth lens image side surface, and CT5 is the central thickness of the fifth lens on the optical axis. More specifically, SAG52 and CT5 can further satisfy 0.3<|SAG52| / CT5<0.7, for example, 0.33≤|SAG52| / CT5≤0.63. Satisfying the condition formula |SAG52| / CT5<1 can effectively reduce the deflection angle on the edge of the fifth lens from the object side surface to the image side surface, so that the fifth lens has good processing characteristics.

[0053] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 0<CT3 / CT6<3, wherein CT3 is the central thickness of the third lens on the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis. More specifically, CT3 and CT6 can further satisfy 0.7<CT3 / CT6<2.5, for example, 0.88≤CT3 / CT6≤2.28. The lens center thickness affects the system focal power, and by controlling the ratio of CT3 to CT6, the distortion contribution of each field of view of the system can be controlled within a reasonable range, thereby improving the imaging quality of the system.

[0054] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula |R5-R8| / |R5+R8|<1, wherein R5 is the curvature radius of the object side surface of the third lens, and R8 is the curvature radius of the image side surface of the fourth lens. More specifically, R5 and R8 can further satisfy 0<|R5-R8| / |R5+R8|<0.5, for example, 0.03≤|R5-R8| / |R5+R8|≤0.34. By constraining the ratio of the difference between the curvature radii of the object side surface of the third lens and the image side surface of the fourth lens to the sum of the curvature radii of the object side surface of the third lens and the image side surface of the fourth lens within a certain range, the coma of the system can be reduced, so that the system has good imaging quality.

[0055] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1 < ImgH / DT52 < 4, wherein ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the camera lens, and DT52 is the maximum effective radius of the image side surface of the fifth lens. More specifically, ImgH and DT52 can further satisfy 2.1 < ImgH / DT52 < 2.8, for example, 2.25 ≤ ImgH / DT52 ≤ 2.65. By constraining the ratio of the system image height to the effective radius of the image side surface of the fifth lens within a certain range, the aberration of the edge field of view can be effectively reduced, and the imaging quality of the edge field of view is improved.

[0056] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 0 < T45 / f45 x 10 < 0.5, wherein T45 is the interval distance on the optical axis between the fourth lens and the fifth lens, and f45 is the combined focal length of the fourth lens and the fifth lens. More specifically, T45 and f45 can further satisfy 0.14 ≤ T45 / f45 x 10 ≤ 0.37. By constraining the ratio of the combined focal length of the fourth lens and the fifth lens to the air gap between the fourth lens and the fifth lens within a certain range, the optical power can be reasonably distributed, and the system has good imaging quality.

[0057] In exemplary embodiments, the above-mentioned camera lens can further include at least one diaphragm to improve the imaging quality of the lens. Optionally, the diaphragm can be arranged between the second lens and the third lens.

[0058] Optionally, the above-mentioned camera lens can further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive elements on the imaging plane.

[0059] The camera lens according to the above-mentioned embodiments of the present application can adopt multiple lenses, for example, six lenses as described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and axial interval between lenses, etc., the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the camera lens is more conducive to production and processing and can be applied to portable electronic products such as smartphones. At the same time, the camera lens configured as described above can have the beneficial effects of being ultra-thin, having a large field of view, having high imaging quality, having low sensitivity, etc.

[0060] In embodiments of the present application, at least one of the lens surfaces of each lens is a non-spherical lens surface. The characteristic of a non-spherical lens is that the curvature continuously changes from the center of the lens to the periphery of the lens. Unlike a spherical lens which has a constant curvature from the center of the lens to the periphery of the lens, a non-spherical lens has better curvature radius characteristics, has the advantages of improving distortion aberration and improving astigmatism aberration. After using a non-spherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality.

[0061] However, those skilled in the art will understand that the number of lenses constituting the camera lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although six lenses are described as an example in the embodiments, the camera lens is not limited to including six lenses. If desired, the camera lens may also include other numbers of lenses.

[0062] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the camera lens applicable to the above-described embodiments.

[0063] Example 1

[0064] The following is for reference FIG. 1 to FIG. 2D The camera lens according to Embodiment 1 of this application is described. FIG. 1 A schematic diagram of the structure of a camera lens according to Embodiment 1 of this application is shown.

[0065] like FIG. 1 As shown, the camera lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0066] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave, and at least one of the object-side surface S11 and image-side surface S12 of the sixth lens E6 has a point of inflection. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0067] Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the camera lens in Example 1, wherein the units for radius of curvature and thickness are millimeters (mm).

[0068]

[0069] Table 1

[0070] As shown in Table 1, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. In this embodiment, the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0071]

[0072] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient (given in Table 1); Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A12 that can be used for each aspherical mirror S1-S12 in Example 1. 10 A 12 A 14 A 16 A 18 and A 20 .

[0073] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.6722E-01 -4.3604E-01 4.6589E-01 -3.4827E-01 1.6723E-01 -4.8026E-02 5.7815E-03 0.0000E+00 0.0000E+00 S2 5.0595E-01 -4.5232E-01 7.9386E-01 -2.0812E+00 4.8699E+00 -5.7621E+00 2.3492E+00 0.0000E+00 0.0000E+00 S3 -3.1479E-02 1.3377E-01 -1.2255E+00 4.4613E+00 -8.1360E+00 7.4180E+00 -2.6288E+00 0.0000E+00 0.0000E+00 S4 3.5308E-02 2.7881E-01 -2.2306E+00 1.4586E+01 -4.0689E+01 4.9143E+01 -4.2352E+00 0.0000E+00 0.0000E+00 S5 1.1999E-02 -6.5388E-01 8.7212E+00 -7.9315E+01 4.5343E+02 -1.6727E+03 3.8479E+03 -5.0028E+03 2.7931E+03 S6 -2.3562E-01 -1.0619E+00 1.5193E+01 -1.0108E+02 4.0909E+02 -1.0483E+03 1.6473E+03 -1.4426E+03 5.3721E+02 S7 -5.3178E-01 -1.0583E+00 1.4986E+01 -7.6343E+01 2.3957E+02 -4.8418E+02 6.0977E+02 -4.3274E+02 1.3176E+02 S8 -1.5593E-01 -1.6055E+00 9.9119E+00 -3.1187E+01 6.2622E+01 -8.1216E+01 6.5551E+01 -2.9911E+01 5.8969E+00 S9 1.8523E-01 -1.5927E+00 5.7147E+00 -1.2878E+01 1.9231E+01 -1.8200E+01 1.0078E+01 -2.7793E+00 2.3477E-01 S10 -1.6917E-01 7.0442E-01 -1.4592E+00 2.0969E+00 -1.8142E+00 7.2179E-01 1.1682E-01 -1.9676E-01 4.5728E-02 S11 -3.0276E-01 -7.1933E-02 6.1830E-01 -1.1090E+00 1.1111E+00 -6.9417E-01 2.6614E-01 -5.6422E-02 5.0108E-03 S12 -2.7347E-01 2.6900E-01 -2.0117E-01 1.0531E-01 -3.7822E-02 8.9966E-03 -1.3411E-03 1.1234E-04 -3.9868E-06

[0074] Table 2

[0075] Table 3 gives the total effective focal length f of the camera lens in Example 1, the effective focal lengths f1 to f6 of each lens, half the diagonal length of the effective pixel area on the imaging surface S15 ImgH, and the total optical length TTL of the camera lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15).

[0076]

[0077]

[0078] Table 3

[0079] The camera lens in Example 1 satisfies the following relationship:

[0080] f / CT3 = 3.97, where f is the total effective focal length of the camera lens and CT3 is the center thickness of the third lens E3 on the optical axis;

[0081] ∑CT×(R3+R4)=10.68, where ∑CT is the sum of the center thicknesses of the first lens E1 to the sixth lens E6 on the optical axis, R3 is the radius of curvature of the object side surface S3 of the second lens E2, and R4 is the radius of curvature of the image side surface S4 of the second lens E2.

[0082] TTL / ImgH = 1.77, where TTL is the total track length of the photographing lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S15 of the photographing lens;

[0083] |f / f34| + |f / f56| = 1.37, where f is the total effective focal length of the photographing lens, f34 is the combined focal length of the third lens E3 and the fourth lens E4, and f56 is the combined focal length of the fifth lens E5 and the sixth lens E6;

[0084] DT12 / SAG12 = 2.14, where DT12 is the maximum effective radius of the image side surface S2 of the first lens E1, and SAG12 is the axial distance from the intersection of the image side surface S2 of the first lens E1 and the optical axis to the effective radius vertex of the image side surface S2 of the first lens E1;

[0085] f / f123 = 1.44, where f is the total effective focal length of the photographing lens, and f123 is the combined focal length of the first lens E1, the second lens E2, and the third lens E3;

[0086] |SAG52| / CT5 = 0.60, where SAG52 is the axial distance from the intersection of the image side surface S10 of the fifth lens E5 and the optical axis to the effective radius vertex of the image side surface S10 of the fifth lens E5, and CT5 is the central thickness of the fifth lens E5 on the optical axis;

[0087] CT3 / CT6 = 1.09, where CT3 is the central thickness of the third lens E3 on the optical axis, and CT6 is the central thickness of the sixth lens E6 on the optical axis;

[0088] |R5-R8| / |R5+R8| = 0.03, where R5 is the curvature radius of the object side surface S5 of the third lens E3, and R8 is the curvature radius of the image side surface S8 of the fourth lens E4;

[0089] ImgH / DT52 = 2.25, where ImgH is half of the diagonal length of the effective pixel area on the imaging surface S15 of the photographing lens, and DT52 is the maximum effective radius of the image side surface S10 of the fifth lens E5;

[0090] T45 / f45 x 10 = 0.17, where T45 is the interval distance of the fourth lens E4 and the fifth lens E5 on the optical axis, and f45 is the combined focal length of the fourth lens E4 and the fifth lens E5.

[0091] FIG. 2A An axial chromatic aberration curve of the photographing lens of Embodiment 1 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the lens. FIG. 2B An astigmatism curve of the photographing lens of Embodiment 1 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. FIG. 2CThe distortion curve of the camera lens of Embodiment 1 is shown, which represents the distortion size value under different view angle conditions. FIG. 2D The magnification chromatic aberration curve of the camera lens of Embodiment 1 is shown, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to the formula FIG. 2A to FIG. 2D It can be seen that the camera lens given in Embodiment 1 can achieve good imaging quality.

[0092] Example 2

[0093] The following refers to FIG. 3 to FIG. 4D A camera lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, part of the description similar to Embodiment 1 will be omitted for brevity. FIG. 3 The structural schematic diagram of the camera lens according to Embodiment 2 of the present application is shown.

[0094] As shown in FIG. 3 The camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15.

[0095] The first lens E1 has a negative focal power, the object side surface S1 is a concave surface, and the image side surface S2 is a concave surface. The second lens E2 has a positive focal power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive focal power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a negative focal power, the object side surface S7 is a concave surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive focal power, the object side surface S9 is a convex surface, and the image side surface S10 is a convex surface. The sixth lens E6 has a negative focal power, the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface, and at least one of the object side surface S11 and the image side surface S12 of the sixth lens E6 has an inflection point. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging plane S15.

[0096] Table 4 shows the surface type, curvature radius, thickness, material, and conic constant of each lens of the camera lens of Embodiment 2, wherein the units of the curvature radius and the thickness are millimeters (mm).

[0097]

[0098]

[0099] Table 4

[0100] As shown in Table 4, in the embodiment 2, 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. Table 5 shows the high order term coefficients of the aspherical surfaces used in the embodiment 2, wherein each aspherical surface can be defined by the formula (1) given in the embodiment 1.

[0101] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 4.5495E-01 -6.7359E-01 8.3157E-01 -6.9949E-01 3.7414E-01 -1.1574E-01 1.5373E-02 0.0000E+00 0.0000E+00 S2 6.7367E-01 -8.3677E-01 3.5962E-01 1.4279E+00 -2.5059E+00 1.3321E+00 -2.0258E-01 0.0000E+00 0.0000E+00 S3 -2.2317E-02 -2.3921E-02 -8.5989E-01 3.9826E+00 -7.5445E+00 6.8694E+00 -2.3994E+00 0.0000E+00 0.0000E+00 S4 3.0055E-02 6.5384E-03 1.9162E+00 -1.3322E+01 6.1480E+01 -1.4051E+02 1.3544E+02 0.0000E+00 0.0000E+00 S5 1.2279E-02 -7.0502E-01 9.8370E+00 -8.9548E+01 5.0790E+02 -1.8290E+03 4.0568E+03 -5.0471E+03 2.6889E+03 S6 -3.0351E-01 -4.6873E-01 8.2975E+00 -5.2608E+01 2.0128E+02 -4.9333E+02 7.5010E+02 -6.4023E+02 2.3326E+02 S7 -5.8523E-01 -6.1364E-01 1.0416E+01 -5.1082E+01 1.5491E+02 -3.0503E+02 3.7719E+02 -2.6400E+02 7.9349E+01 S8 -2.0151E-01 -1.1919E+00 7.5630E+00 -2.2819E+01 4.3964E+01 -5.5444E+01 4.4124E+01 -2.0046E+01 3.9559E+00 S9 1.3164E-01 -1.2435E+00 4.4878E+00 -9.7326E+00 1.4051E+01 -1.3461E+01 8.1735E+00 -2.8362E+00 4.2503E-01 S10 -2.5850E-01 1.0779E+00 -2.4977E+00 4.1637E+00 -4.6494E+00 3.3466E+00 -1.4373E+00 3.2485E-01 -2.8595E-02 S11 -3.9589E-01 1.1840E-01 3.6999E-01 -9.0831E-01 1.0345E+00 -7.0631E-01 2.9020E-01 -6.4968E-02 6.0281E-03 S12 -2.6600E-01 2.5671E-01 -1.8675E-01 9.3560E-02 -3.1426E-02 6.7406E-03 -8.5076E-04 5.2977E-05 -9.3544E-07

[0102] Table 5

[0103] Table 6 shows the total effective focal length f of the camera lens and the effective focal lengths f1 to f6 of the lenses, the half of the diagonal line length of the effective pixel area on the imaging surface S15, ImgH, and the total track length TTL of the camera lens in the embodiment 2.

[0104]

[0105]

[0106] Table 6

[0107] FIG. 4A The axial chromatic aberration curve of the camera lens in the embodiment 2 is shown, which represents the deviation of the convergent focal points of light rays with different wavelengths after passing through the lens. FIG. 4B The astigmatism curve of the camera lens in the embodiment 2 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. FIG. 4C The distortion curve of the camera lens in the embodiment 2 is shown, which represents the distortion size values at different view angles. FIG. 4D The lateral chromatic aberration curve of the camera lens in the embodiment 2 is shown, which represents the deviation of the image height of light rays on the imaging surface after passing through the lens. According to the formula (2), the lateral chromatic aberration curve can be calculated by the following formula (3): FIG. 4A to FIG. 4D It can be seen that the camera lens given in the embodiment 2 can achieve good imaging quality.

[0108] Example 3

[0109] The following refers to FIG. 5 to FIG. 6D The camera lens according to the embodiment 3 of the present application is described. FIG. 5 The structure schematic diagram of the camera lens according to the embodiment 3 of the present application is shown.

[0110] As shown in FIG. 5 the camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0111] The first lens E1 has negative refractive power, the object side surface S1 is convex, and the image side surface S2 is concave. The second lens E2 has positive refractive power, the object side surface S3 is convex, and the image side surface S4 is concave. The third lens E3 has positive refractive power, the object side surface S5 is convex, and the image side surface S6 is convex. The fourth lens E4 has negative refractive power, the object side surface S7 is convex, and the image side surface S8 is concave. The fifth lens E5 has positive refractive power, the object side surface S9 is concave, and the image side surface S10 is convex. The sixth lens E6 has negative refractive power, the object side surface S11 is convex, and the image side surface S12 is concave, and at least one of the object side surface S11 and the image side surface S12 of the sixth lens E6 has an inflection point. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0112] Table 7 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the camera lens of Example 3, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0113]

[0114] Table 7

[0115] As shown in Table 7, in Example 3, 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. Table 8 shows the high order term coefficients of the aspherical surfaces of Example 3, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0116] Face No. A4 A6 A8 A10 A12 A14 A16 A1 A20 S1 3.7901E-01 -4.2049E-01 4.4542E-01 -3.2981E-01 1.5751E-01 -4.3722E-02 4.8931E-03 0.0000E+00 0.0000E+00 S2 1.1216E+00 -2.6262E+00 7.8254E+00 -1.7468E+01 2.6036E+01 -2.1925E+01 7.5254E+00 0.0000E+00 0.0000E+00 S3 1.0072E-01 4.6248E-02 -1.2395E+00 5.1060E+00 -1.1441E+01 1.2426E+01 -5.0807E+00 0.0000E+00 0.0000E+00 S4 1.2912E-01 5.0238E-01 -6.2238E+00 4.0385E+01 -1.4136E+02 2.5229E+02 -1.7244E+02 0.0000E+00 0.0000E+00 S5 1.3298E-01 -8.3262E-01 1.1151E+01 -1.0658E+02 6.1920E+02 -2.2254E+03 4.8208E+03 -5.7658E+03 2.9180E+03 S6 -1.8590E-01 -2.5461E-01 5.6782E+00 -3.4095E+01 1.1734E+02 -2.5034E+02 3.2606E+02 -2.3519E+02 7.1191E+01 S7 -6.0968E-01 3.3428E-01 1.4800E+00 -5.9117E+00 6.0172E+00 1.2077E+01 -4.0617E+01 4.4774E+01 -1.8246E+01 S8 -1.6719E-01 -4.7520E-01 3.1298E+00 -7.9460E+00 1.1456E+01 -9.2860E+00 3.4428E+00 8.4525E-02 -3.0740E-01 S9 1.1287E-01 -5.9687E-01 1.6643E+00 -1.9004E+00 -6.8523E-01 4.8003E+00 -5.9318E+00 3.2886E+00 -7.1468E-01 S10 -2.3476E-01 8.7750E-01 -1.7985E+00 2.3849E+00 -1.7284E+00 3.3206E-01 4.3312E-01 -3.0669E-01 5.9863E-02 S11 -3.4104E-01 1.1131E-03 6.6305E-01 -1.4411E+00 1.6493E+00 -1.1394E+00 4.6863E-01 -1.0431E-01 9.6095E-03 S12 -2.6838E-01 2.7306E-01 -2.1069E-01 1.1319E-01 -4.1259E-02 9.8069E-03 -1.4364E-03 1.1592E-04 -3.8500E-06

[0117] Table 8

[0118] Table 9 shows the total effective focal length f of the camera lens of Example 3, the effective focal lengths f1 to f6 of each lens, the half of the diagonal line length of the effective pixel area on the imaging surface S15 ImgH, and the total optical length TTL of the camera lens.

[0119] f (mm) 2.25 f5 (mm) 2.58 f1 (mm) -3.87 f6 (mm) -4.57 f2 (mm) 11.87 ImgH (mm) 2.88 f3 (mm) 2.13 TTL (mm) 5.10 f4 (mm) -5.21 HFOV (°) 58.4

[0120] Table 9

[0121] FIG. 6A The axial chromatic aberration curve of the camera lens of Example 3 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. FIG. 6B The astigmatism curve of the camera lens of Example 3 is shown, which represents the meridional image surface curvature and the sagittal image surface curvature. FIG. 6C The distortion curve of the camera lens of Example 3 is shown, which represents the distortion size value at different view angles. FIG. 6DThe magnification chromatic aberration curve of the camera lens in Embodiment 3 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... FIG. 6A to FIG. 6D It can be seen that the camera lens given in Example 3 can achieve good imaging quality.

[0122] Example 4

[0123] The following is for reference FIG. 7 to FIG. 8D A camera lens according to Embodiment 4 of this application is described. FIG. 7 A schematic diagram of the structure of a camera lens according to Embodiment 4 of this application is shown.

[0124] like FIG. 7 As shown, the camera lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0125] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave, and at least one of the object-side surface S11 and image-side surface S12 of the sixth lens E6 has a point of inflection. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0126] Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the camera lens in Example 4, wherein the units for radius of curvature and thickness are millimeters (mm).

[0127]

[0128] Table 10

[0129] As shown in Table 10, in Example 4, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the sixth lens E6 are aspherical. Table 11 shows the higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0130]

[0131]

[0132] Table 11

[0133] Table 12 gives the total effective focal length f of the camera lens in Example 4 and the effective focal lengths f1 to f6 of each lens, half of the diagonal length of the effective pixel area on the imaging surface S15 ImgH, and the total optical length TTL of the camera lens.

[0134] f (mm) 2.26 f5 (mm) 3.21 f1 (mm) -3.46 f6 (mm) -7.52 f2 (mm) 10.55 ImgH (mm) 2.89 f3 (mm) 2.03 TTL (mm) 5.15 f4 (mm) -4.94 HFOV (°) 58.5

[0135] Table 12

[0136] FIG. 8A An on-axis chromatic aberration curve of the camera lens of Example 4 is shown, which represents the deviation of convergent focal points of light rays of different wavelengths after passing through the lens. FIG. 8B An astigmatism curve of the camera lens of Example 4 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. FIG. 8C A distortion curve of the camera lens of Example 4 is shown, which represents the distortion size values at different viewing angles. FIG. 8D A lateral chromatic aberration curve of the camera lens of Example 4 is shown, which represents the deviation of light rays on the imaging surface after passing through the lens at different image heights. According to FIG. 8A to FIG. 8D It can be seen that the camera lens given in Example 4 can achieve good imaging quality.

[0137] Example 5

[0138] The following refers to FIG. 9 to FIG. 10D A camera lens according to Example 5 of the present application is described. FIG. 9 A structure schematic diagram of the camera lens according to Example 5 of the present application is shown.

[0139] As FIG. 9 shown, the camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

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

[0141] Table 13 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the camera lens of Example 5, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0142]

[0143] Table 13

[0144] As shown in Table 13, in Example 5, 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. Table 14 shows the high order term coefficients of the aspherical surfaces of Example 5, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0145]

[0146]

[0147] Table 14

[0148] Table 15 shows the total effective focal length f of the camera lens of Example 5, the effective focal lengths f1 to f6 of each lens, half of the diagonal line length of the effective pixel area on the imaging surface S15 ImgH, and the total optical length TTL of the camera lens.

[0149] f (mm) 2.20 f5 (mm) 2.08 f1 (mm) -2.91 f6 (mm) -2.44 f2 (mm) 7.57 ImgH (mm) 2.89 f3 (mm) 1.98 TTL (mm) 5.11 f4 (mm) -5.26 HFOV (°) 58.5

[0150] Table 15

[0151] FIG. 10A The axial chromatic aberration curve of the camera lens of Example 5 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. FIG. 10B The astigmatism curve of the camera lens of Example 5 is shown, which represents the meridional image surface curvature and the sagittal image surface curvature. FIG. 10CThe distortion curve of the camera lens of Embodiment 5 is shown, which represents the distortion size value under different view angle conditions. FIG. 10D The magnification chromatic aberration curve of the camera lens of Embodiment 5 is shown, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to the formula FIG. 10A to FIG. 10D It can be seen that the camera lens given by Embodiment 5 can achieve good imaging quality.

[0152] Example 6

[0153] The camera lens according to Embodiment 6 of the present application is described below. FIG. 11 to FIG. 12D The structure schematic diagram of the camera lens according to Embodiment 6 of the present application is shown. FIG. 11 The structure schematic diagram of the camera lens according to Embodiment 6 of the present application is shown.

[0154] As shown in FIG. 11 The camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0155] The first lens E1 has negative refractive power, the object side surface S1 is a concave surface, and the image side surface S2 is a concave surface. The second lens E2 has positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has positive refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The sixth lens E6 has negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a convex surface, and at least one of the object side surface S11 and the image side surface S12 of the sixth lens E6 has an inflection point. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0156] Table 16 shows the surface type, curvature radius, thickness, material, and conic constant of each lens of the camera lens of Embodiment 6, wherein the units of the curvature radius and the thickness are millimeters (mm).

[0157]

[0158] Table 16

[0159] As shown in Table 16, in the embodiment 6, 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. Table 17 shows the high order term coefficients of the aspherical surfaces which can be used in the embodiment 6, wherein each aspherical surface can be defined by the formula (1) given in the above embodiment 1.

[0160] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.3799E-01 -3.6141E-01 3.0560E-01 -1.7232E-01 6.0862E-02 -1.2104E-02 1.0142E-03 0.0000E+00 0.0000E+00 S2 1.0421E+00 -1.9618E+00 3.8184E+00 -5.4752E+00 5.5237E+00 -3.4313E+00 9.0334E-01 0.0000E+00 0.0000E+00 S3 8.3677E-02 -7.5235E-01 2.1402E+00 -4.6002E+00 5.4277E+00 -3.1843E+00 6.9541E-01 0.0000E+00 0.0000E+00 S4 8.9848E-02 -9.8890E-01 8.2564E+00 -4.0576E+01 1.1753E+02 -1.7889E+02 1.1539E+02 0.0000E+00 0.0000E+00 S5 5.8342E-02 -2.2537E+00 3.5898E+01 -3.3691E+02 1.9208E+03 -6.7553E+03 1.4299E+04 -1.6692E+04 8.2562E+03 S6 -5.5171E-01 1.6765E+00 -1.9118E+00 -1.5311E+01 1.0743E+02 -3.3812E+02 5.9762E+02 -5.7420E+02 2.3599E+02 S7 -7.4364E-01 1.4624E+00 -4.7422E+00 1.9290E+01 -6.3731E+01 1.4260E+02 -1.9891E+02 1.5414E+02 -4.9939E+01 S8 -3.8786E-01 5.6434E-01 2.5586E-01 -3.0726E+00 6.5923E+00 -6.9058E+00 3.4739E+00 -5.0407E-01 -1.0689E-01 S9 4.2232E-02 -6.0130E-01 3.6060E+00 -1.0068E+01 1.6221E+01 -1.5814E+01 9.1634E+00 -2.8867E+00 3.7643E-01 S10 2.6054E-01 -2.1637E-01 -6.4789E-01 3.4420E+00 -6.3292E+00 6.3016E+00 -3.5729E+00 1.0806E+00 -1.3512E-01 S11 3.9041E-01 -1.3549E+00 9.0869E-01 1.0772E+00 -3.2154E+00 3.5931E+00 -2.1735E+00 6.9161E-01 -8.9685E-02 S12 5.2418E-01 -1.2520E+00 1.4857E+00 -1.1475E+00 5.9345E-01 -2.0271E-01 4.3831E-02 -5.4413E-03 2.9585E-04

[0161] Table 17

[0162] Table 18 gives the total effective focal length f of the camera lens and the effective focal lengths f1 to f6 of the respective lenses, the half of the diagonal line length of the effective pixel area on the imaging surface S15 ImgH, and the total track length TTL of the camera lens in the embodiment 6.

[0163] f (mm) 1.96 f5 (mm) 2.24 f1 (mm) -2.88 f6 (mm) -3.80 f2 (mm) 7.79 ImgH (mm) 2.89 f3 (mm) 1.99 TTL (mm) 5.11 f4 (mm) -6.79 HFOV (°) 58.6

[0164] Table 18

[0165] FIG. 12A The axial chromatic aberration curve of the camera lens in the embodiment 6 is shown, which represents the deviation of the convergent focal points of light rays with different wavelengths after passing through the lens. FIG. 12B The astigmatism curve of the camera lens in the embodiment 6 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. FIG. 12C The distortion curve of the camera lens in the embodiment 6 is shown, which represents the distortion size values at different view angles. FIG. 12D The relative aperture chromatic aberration curve of the camera lens in the embodiment 6 is shown, which represents the deviation of the light rays on the imaging surface after passing through the lens. According to the formula (2), the relative aperture chromatic aberration curve of the camera lens in the embodiment 6 is shown. FIG. 12A to FIG. 12D It can be seen that the camera lens given in the embodiment 6 can achieve good imaging quality.

[0166] Example 7

[0167] The following refers to FIG. 13 to FIG. 14D The camera lens according to the embodiment 7 of the present application is described. FIG. 13 The structure schematic diagram of the camera lens according to the embodiment 7 of the present application is shown.

[0168] As FIG. 13 shown, the camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side, the first lens E1, the second lens E2, the stop STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the filter E7, and the imaging surface S15.

[0169] The first lens E1 has negative refractive power, the object side surface S1 is concave, and the image side surface S2 is convex. The second lens E2 has positive refractive power, the object side surface S3 is convex, and the image side surface S4 is concave. The third lens E3 has positive refractive power, the object side surface S5 is convex, and the image side surface S6 is convex. The fourth lens E4 has negative refractive power, the object side surface S7 is convex, and the image side surface S8 is concave. The fifth lens E5 has positive refractive power, the object side surface S9 is convex, and the image side surface S10 is convex. The sixth lens E6 has negative refractive power, the object side surface S11 is concave, and the image side surface S12 is concave, and at least one of the object side surface S11 and the image side surface S12 of the sixth lens E6 has an inflection point. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0170] Table 19 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the camera lens of Example 7, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0171]

[0172] Table 19

[0173] As shown in Table 19, in Example 7, 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. Table 20 shows the high order term coefficients of the aspherical surfaces of Example 7, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0174] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.4079E-01 -3.5426E-01 2.8982E-01 -1.6008E-01 5.6397E-02 -1.1302E-02 9.8456E-04 0.0000E+00 0.0000E+00 S2 1.0242E+00 -1.5258E+00 2.4843E+00 -3.3047E+00 3.2121E+00 -1.8812E+00 4.4958E-01 0.0000E+00 0.0000E+00 S3 1.7401E-01 -1.1341E+00 2.8017E+00 -5.9965E+00 7.7758E+00 -5.1429E+00 1.3286E+00 0.0000E+00 0.0000E+00 S4 1.0256E-01 -9.3679E-01 4.5289E+00 -1.6194E+01 3.9464E+01 -5.2743E+01 3.3890E+01 0.0000E+00 0.0000E+00 S5 -4.7068E-03 -1.0850E-01 -2.1509E-01 8.1036E+00 -7.5481E+01 3.4940E+02 -9.0188E+02 1.2341E+03 -6.9952E+02 S6 -9.9874E-01 6.9680E+00 -3.7951E+01 1.6572E+02 -5.3894E+02 1.2112E+03 -1.7497E+03 1.4525E+03 -5.2559E+02 S7 -1.2260E+00 2.4192E+00 5.5191E+00 -6.0286E+01 2.1637E+02 -4.4316E+02 5.3988E+02 -3.6153E+02 1.0245E+02 S8 -4.9876E-01 5.8469E-01 3.8075E+00 -2.0332E+01 4.8260E+01 -6.6965E+01 5.5631E+01 -2.5678E+01 5.0960E+00 S9 1.3861E-01 -1.0114E+00 4.9388E+00 -1.4085E+01 2.5045E+01 -2.8045E+01 1.9259E+01 -7.4292E+00 1.2342E+00 S10 3.4988E-01 -2.0011E-01 -2.9543E-01 1.9255E+00 -4.3381E+00 5.6270E+00 -4.1213E+00 1.5569E+00 -2.3507E-01 S11 2.9518E-01 -8.0901E-01 -2.0062E+00 1.0719E+01 -2.1679E+01 2.4414E+01 -1.5817E+01 5.4946E+00 -7.9158E-01 S12 3.4854E-01 -1.2982E+00 2.0357E+00 -2.0241E+00 1.3255E+00 -5.6235E-01 1.4812E-01 -2.2007E-02 1.4114E-03

[0175] Table 20

[0176] Table 21 shows the total effective focal length f of the camera lens of Example 7, the effective focal lengths f1 to f6 of each lens, half of the diagonal line length of the effective pixel area on the imaging surface S15 ImgH, and the total track length TTL of the camera lens.

[0177] f (mm) 1.85 f5 (mm) 1.86 f1 (mm) -3.15 f6 (mm) -2.79 f2 (mm) 18.93 ImgH (mm) 2.89 f3 (mm) 1.85 TTL (mm) 5.11 f4 (mm) -3.74 HFOV (°) 58.5

[0178] Table 21

[0179] FIG. 14A The axial chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. FIG. 14B The astigmatism curve of the camera lens of Example 7 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. FIG. 14C The distortion curve of the camera lens of Example 7 is shown, which represents the distortion size value at different view angles. FIG. 14DThe magnification chromatic aberration curve of the camera lens of embodiment 7 is shown, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to FIG. 14A to FIG. 14D It can be known that the camera lens given by embodiment 7 can achieve good imaging quality.

[0180] In summary, embodiments 1 to 7 respectively satisfy the relationships shown in table 22.

[0181]

[0182] Table 22

[0183] The present application also provides an imaging device, the electronic photosensitive element of which can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be a separate imaging equipment 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.

[0184] The above description is merely preferred embodiments of the present application and a description of the principles of the technology used. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the technical solutions formed by replacing the above features with the technical features disclosed in the present application (but not limited to) having similar functions.

Claims

1. An imaging lens comprising, in order from the object side to the image side along the optical axis: The first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are characterized in that The first lens has negative refractive power; The second lens has positive refractive power, and a subject side surface thereof is convex, and an image side surface thereof is concave; The third lens has positive refractive power, and a subject side surface thereof is convex; The fourth lens has negative refractive power, and an image side surface thereof is concave; The fifth lens has positive refractive power; The sixth lens has negative refractive power, and at least one of a subject side surface and an image side surface thereof has an inflection point; A sum ∑CT of central thicknesses of the first lens to the sixth lens on the optical axis, a curvature radius R3 of the subject side surface of the second lens, and a curvature radius R4 of the image side surface of the second lens satisfy 7 < ∑CT × (R3 + R4) < 11; A curvature radius R5 of the subject side surface of the third lens and a curvature radius R8 of the image side surface of the fourth lens satisfy 0 < |R5 - R8| / |R5 + R8| < 1; and The imaging lens has six lenses with refractive power.

2. The camera lens of claim 1, wherein An interval distance T45 of the fourth lens and the fifth lens on the optical axis and a combined focal length f45 of the fourth lens and the fifth lens satisfy 0 < T45 / f45 × 10 < 0.

5.

3. The camera lens of claim 1, wherein A total effective focal length f of the imaging lens and a central thickness CT3 of the third lens on the optical axis satisfy 3 < f / CT3 < 5.

4. The camera lens of claim 1, wherein A maximum effective radius DT12 of the image side surface of the first lens and an on-axis distance SAG12 from an intersection of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens satisfy 1 < DT12 / SAG12 < 3.

5. The camera lens of claim 1, wherein An on-axis distance SAG52 from an intersection of the image side surface of the fifth lens and the optical axis to an effective radius vertex of the image side surface of the fifth lens and a central thickness CT5 of the fifth lens on the optical axis satisfy 0.3 < |SAG52| / CT5 < 1.

6. The camera lens of claim 1, wherein A central thickness CT3 of the third lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis satisfy 0 < CT3 / CT6 < 3.

7. The camera lens according to any one of claims 1 to 6, characterized in that, A half of a diagonal line length ImgH of an effective pixel area on an imaging surface of the imaging lens and a maximum effective radius DT52 of the image side surface of the fifth lens satisfy 1 < ImgH / DT52 < 4.

8. The camera lens according to any one of claims 1 to 6, characterized in that, A half HFOV of a maximum half field of view of the imaging lens satisfies 58.6° ≥ HFOV ≥ 55°.

9. The camera lens according to any one of claims 1 to 6, characterized in that, A distance TTL from the subject side surface of the first lens to the imaging surface of the imaging lens on the optical axis and a half ImgH of a diagonal line length of an effective pixel area on the imaging surface of the imaging lens satisfy 1.6 < TTL / ImgH < 2.

10. The camera lens according to any one of claims 1 to 6, characterized in that, A total effective focal length f of the imaging lens, a combined focal length f34 of the third lens and the fourth lens, and a combined focal length f56 of the fifth lens and the sixth lens satisfy 1.24 ≤ |f / f34| + |f / f56| < 2.

11. The camera lens according to any one of claims 1 to 6, characterized in that, A total effective focal length f of the imaging lens and a combined focal length f123 of the first lens, the second lens, and the third lens satisfy 1 < f / f123 < 2.

5.

12. The camera lens according to any one of claims 1 to 6, characterized in that, An image-side surface of the third lens is convex.

13. The camera lens of any one of claims 1 to 6, wherein, An image-side surface of the fifth lens is convex.

Images