Camera lens

Abstract

The present application discloses a camera lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with positive optical power, whose object side surface is convex; a third lens with optical power; a fourth lens with optical power, whose object side surface is convex; and a fifth lens with optical power. The effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 0.3<f2 / f1<0.7; the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and the entrance pupil diameter EPD of the camera lens satisfy: TTL / EPD<2.5.

Description

Technical Field

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

[0002] At present, with the continuous advancement of science and technology, the shooting level of portable electronic products such as smartphones is also constantly improving, and major smartphone and other portable electronic product manufacturers have also regarded shooting ability as one of the main performance indicators of smartphones and other portable electronic products.

[0003] Portable electronic products such as smartphones are generally equipped with multiple different types of lenses to achieve higher imaging effects. Lenses that are highly applicable in the actual shooting process will be favored by more and more consumers, and such lenses will become the standard for mobile phones and other portable electronic products in the future. Summary of the invention

[0004] On one hand, the present application provides such a camera lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with positive optical power, whose object side surface is convex; a third lens with optical power; a fourth lens with optical power, whose object side surface is convex; and a fifth lens with optical power. The effective focal length f2 of the second lens and the effective focal length f1 of the first lens can satisfy: 0.3<f2 / f1<0.7; the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and the entrance pupil diameter EPD of the camera lens can satisfy: TTL / EPD<2.5.

[0005] In one embodiment, at least one mirror surface from the object side surface of the first lens to the image side surface of the fifth lens is an aspherical mirror surface.

[0006] In one embodiment, a center thickness CT4 of the fourth lens and a distance TD from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis may satisfy: CT4 / TD<0.1.

[0007] In one embodiment, a distance T45 between the fourth lens and the fifth lens on the optical axis and a distance TD from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis may satisfy: T45 / TD>0.38.

[0008] In one embodiment, a curvature radius R1 of the object-side surface of the first lens and a curvature radius R3 of the object-side surface of the second lens may satisfy: 10×|(R1-R3) / (R1+R3)|<1.

[0009] In one embodiment, the curvature radius R1 of the object-side surface of the first lens, the total effective focal length f of the camera lens, and the effective focal length f1 of the first lens may satisfy: 10×(R1 / f-R1 / f1)<1.2.

[0010] In one embodiment, the combined focal length f1234 of the first lens, the second lens, the third lens, and the fourth lens and the total effective focal length f of the camera lens may satisfy: 0.7<f1234 / f<1.

[0011] In one embodiment, a center thickness CT3 of the third lens and an edge thickness ET3 of the third lens may satisfy: 0.2<CT3 / ET3<1.

[0012] In one embodiment, a center thickness CT5 of the fifth lens and an edge thickness ET5 of the fifth lens may satisfy: 0.2<ET5 / CT5<0.6.

[0013] In one embodiment, a distance SAG52 from an intersection of the image side surface of the fifth lens and the optical axis to a vertex of an effective radius of the image side surface of the fifth lens on the optical axis and a center thickness CT5 of the fifth lens may satisfy: -2.6<SAG52 / CT5<-1.

[0014] In one embodiment, an effective half-aperture DT32 of the image-side surface of the third lens and an effective half-aperture DT41 of the object-side surface of the fourth lens may satisfy: 1<DT32 / DT41<1.2.

[0015] In one embodiment, the effective semi-aperture DT41 of the object-side surface of the fourth lens and half the diagonal length ImgH of the effective pixel area of ​​the camera lens may satisfy the following: 0.3<DT41 / ImgH<0.5.

[0016] In one embodiment, the object side surface of the third lens has at least one inflection point, and a vertical distance YC31 from the inflection point on the object side surface of the third lens to the optical axis and an effective half aperture DT31 of the object side surface of the third lens may satisfy: 0.5<YC31 / DT31<1.

[0017] In one embodiment, a spacing distance T12 between the first lens and the second lens, a spacing distance T23 between the second lens and the third lens, and a spacing distance T34 between the third lens and the fourth lens on the optical axis may satisfy: 10×(T12+T23+T34) / TTL<1.

[0018] On the other hand, the present application provides such a camera lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with positive optical power, whose object side surface is convex; a third lens with optical power; a fourth lens with optical power, whose object side surface is convex; and a fifth lens with optical power. The center thickness CT4 of the fourth lens and the distance TD on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens satisfy: CT4 / TD<0.1.

[0019] The present application adopts multiple (for example, five) lenses, and through the reasonable allocation of the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, the above-mentioned camera lens has at least one beneficial effect of miniaturization, low sensitivity, good resolution, good processability, high imaging quality, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 A schematic structural diagram of a camera lens according to Embodiment 1 of the present application is shown;

[0022] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 1 are respectively shown;

[0023] Figure 3 A schematic structural diagram of a camera lens according to Embodiment 2 of the present application is shown;

[0024] 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 2 are respectively shown;

[0025] Figure 5 A schematic structural diagram of a camera lens according to Embodiment 3 of the present application is shown;

[0026] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 3 are respectively shown;

[0027] Figure 7 A schematic structural diagram of a camera lens according to Embodiment 4 of the present application is shown;

[0028] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 4 are respectively shown;

[0029] Fig. 9A schematic structural diagram of a camera lens according to Embodiment 5 of the present application is shown;

[0030] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 5 are respectively shown;

[0031] Fig.11 A schematic structural diagram of a camera lens according to Embodiment 6 of the present application is shown;

[0032] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 6 are respectively shown;

[0033] Fig.13 A schematic structural diagram of a camera lens according to Embodiment 7 of the present application is shown;

[0034] FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 7 are respectively shown;

[0035] Fig.15 A schematic structural diagram of a camera lens according to Embodiment 8 of the present application is shown;

[0036] FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and relative illumination curve of the camera lens of Example 8 are respectively shown; and

[0037] Fig.17 The inflection point on the object-side surface of the third lens and the distance from the inflection point to the optical axis are schematically shown. DETAILED DESCRIPTION

[0038] In order to better understand the present application, a more detailed description will be made of various aspects of the present application 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 are not intended to 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.

[0039] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0040] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0041] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0042] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0043] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] The features, principles and other aspects of the present application are described in detail below.

[0046] The camera lens according to the exemplary embodiment of the present application may include five lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The five lenses are arranged in sequence from the object side to the image side along the optical axis. Any two adjacent lenses from the first lens to the fifth lens may have a spacing distance between them.

[0047] In an exemplary embodiment, the first lens may have positive optical power; the second lens may have positive optical power, and its object side surface may be convex; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power, and its object side surface may be convex; the fifth lens may have positive optical power or negative optical power.

[0048] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.3<f2 / f1<0.7, wherein f2 is the effective focal length of the second lens, and f1 is the effective focal length of the first lens. More specifically, f2 and f1 may further satisfy: 0.4<f2 / f1<0.7. Satisfying 0.3<f2 / f1<0.7 can not only reduce the sensitivity of the first lens and the second lens, and avoid too strict tolerance requirements; but also make the first lens and the second lens better complement each other to eliminate the astigmatism, coma, etc. brought by the first lens and the second lens, thereby improving the imaging quality of the entire system and enabling the system to obtain better resolution.

[0049] In an exemplary embodiment, the camera lens according to the present application may satisfy: TTL / EPD<2.5, wherein TTL is the distance from the object side of the first lens to the imaging surface of the camera lens on the optical axis, and EPD is the entrance pupil diameter of the camera lens. More specifically, TTL and EPD may further satisfy: TTL / EPD<1.9. Satisfying TTL / EPD<2.5 can ensure that the system has sufficient luminous flux to ensure that the image plane has a high illumination while ensuring the miniaturization of the optical system, and maintain good imaging quality in night shooting or in an environment with weak light energy.

[0050] In an exemplary embodiment, the camera lens according to the present application may satisfy: CT4 / TD<0.1, wherein CT4 is the center thickness of the fourth lens, and TD is the distance from the object side of the first lens to the image side of the fifth lens on the optical axis. More specifically, CT4 and TD may further satisfy: CT4 / TD<0.09. Satisfying CT4 / TD<0.1 is conducive to the miniaturization of the system and reduces the risk of ghost images. The fourth lens can effectively reduce the coma of the system, and is conducive to avoiding the difficulties in process processing caused by the excessive thinness of the fourth lens.

[0051] In an exemplary embodiment, the camera lens according to the present application may satisfy: T45 / TD>0.38, where T45 is the distance between the fourth lens and the fifth lens on the optical axis, and TD is the distance from the object side of the first lens to the image side of the fifth lens on the optical axis. Satisfying T45 / TD>0.38 can not only better balance the distortion of the system, but also reduce the ghost image energy between the fourth lens and the fifth lens, which is conducive to the system obtaining better imaging quality.

[0052] In an exemplary embodiment, the camera lens according to the present application may satisfy: 10×|(R1-R3) / (R1+R3)|<1, where R1 is the radius of curvature of the object side of the first lens, and R3 is the radius of curvature of the object side of the second lens. Satisfying 10×|(R1-R3) / (R1+R3)|<1 can avoid the processing difficulties caused by excessive inclination, and the first lens and the second lens can effectively balance the spherical aberration of the system, reduce the sensitivity of the first lens and the second lens, and can also help to better converge external light and obtain a larger aperture.

[0053] In an exemplary embodiment, the camera lens according to the present application may satisfy: 10×(R1 / f-R1 / f1)<1.2, where R1 is the radius of curvature of the object side of the first lens, f is the total effective focal length of the camera lens, and f1 is the effective focal length of the first lens. Satisfying 10×(R1 / f-R1 / f1)<1.2 can effectively avoid the problem of sensitivity of the lens caused by excessive concentration of light focal length, make the tolerance requirements more in line with the existing process capability level, and effectively balance the spherical aberration, coma and astigmatism generated by the first lens.

[0054] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.7<f1234 / f<1, wherein f1234 is the combined focal length of the first lens, the second lens, the third lens and the fourth lens, and f is the total effective focal length of the camera lens. More specifically, f1234 and f may further satisfy: 0.8<f1234 / f<1. Satisfying 0.7<f1234 / f<1 can not only better balance the aberration of the entire system and improve the imaging quality of the system, but also reasonably control the light trend to avoid the problem of excessive sensitivity of the lens caused by too steep light, and can also facilitate the miniaturization of the system.

[0055] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.2<CT3 / ET3<1, where CT3 is the center thickness of the third lens and ET3 is the edge thickness of the third lens. Satisfying 0.2<CT3 / ET3<1 can not only facilitate the processing and assembly process of the third lens, avoiding the problem that the lens is too thin, resulting in practical debugging difficulties, and the lens is easily deformed during the assembly process, thereby affecting the quality of the lens; it can also help the front end size of the lens not to be too large, and facilitate the miniaturization of the front end of the lens group.

[0056] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.2<ET5 / CT5<0.6, where CT5 is the center thickness of the fifth lens and ET5 is the edge thickness of the fifth lens. Satisfying 0.2<ET5 / CT5<0.6 can not only better balance the distortion and field curvature of the entire system, but also help the last lens assembly process to be less likely to deform, which is of great help to the stability of the field curvature. In addition, the molding and debugging process space is larger, which is conducive to avoiding the risk of stray light caused by the appearance problem of the fifth lens.

[0057] In an exemplary embodiment, the camera lens according to the present application may satisfy: -2.6<SAG52 / CT5<-1, wherein SAG52 is the distance from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis, and CT5 is the center thickness of the fifth lens. More specifically, SAG52 and CT5 may further satisfy: -2.6<SAG52 / CT5<-1.5. Satisfying -2.6<SAG52 / CT5<-1 is conducive to avoiding difficulties in the actual processing process, and the CRA can be better matched with the chip.

[0058] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1<DT32 / DT41<1.2, wherein DT32 is the effective semi-aperture of the image side of the third lens, and DT41 is the effective semi-aperture of the object side of the fourth lens. More specifically, DT32 and DT41 may further satisfy: 1<DT32 / DT41<1.1. Satisfying 1<DT32 / DT41<1.2 can effectively control the vignetting value of the system and intercept the part of light with poor imaging quality, thereby improving the resolution of the entire system; it can also avoid the problem of large step difference caused by excessive difference in aperture between the third lens and the fourth lens, which is beneficial to the stability of assembly.

[0059] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.3<DT41 / ImgH<0.5, where DT41 is the effective semi-aperture of the object side of the fourth lens, and ImgH is half of the diagonal length of the effective pixel area of ​​the camera lens. Satisfying 0.3<DT41 / ImgH<0.5 can enable the lens to have a larger image surface while realizing the miniaturization of the optical system.

[0060] In an exemplary embodiment, the camera lens according to the present application may satisfy: 0.5<YC31 / DT31<1, wherein YC31 is the vertical distance from the inflection point on the object side of the third lens to the optical axis, and DT31 is the effective semi-aperture of the object side of the third lens. More specifically, YC31 and DT31 may further satisfy: 0.6<YC31 / DT31<1. Satisfying 0.5<YC31 / DT31<1 allows the object side of the third lens including the inflection point to diverge the external light after being converged by the first lens and the second lens, so that the imaging system can obtain a larger image surface while having a large aperture. At the same time, the use of the third lens (especially the object side of the third lens) in conjunction with the fourth lens can well correct the coma problem of the system and improve the imaging quality. Fig.17 An inflection point 110 located on the object-side surface of the third lens E3 and a vertical distance YC31 from the inflection point 110 to the optical axis are schematically shown.

[0061] In an exemplary embodiment, the camera lens according to the present application may satisfy: 10×(T12+T23+T34) / TTL<1, wherein T12 is the spacing distance between the first lens and the second lens on the optical axis, T23 is the spacing distance between the second lens and the third lens on the optical axis, and T34 is the spacing distance between the third lens and the fourth lens on the optical axis. More specifically, T12, T23, T34 and TTL may further satisfy: 10×(T12+T23+T34) / TTL<0.7. Satisfying 10×(T12+T23+T34) / TTL<1 can not only be beneficial to processing and assembly processability, avoid interference problems caused by two lenses being too close, but also be beneficial to slowing down light deflection, can adjust the field curvature of the lens, reduce sensitivity, and can also reduce the ghost image energy between the first lens to the fourth lens.

[0062] In an exemplary embodiment, the camera lens according to the present application further includes an aperture provided between the object side and the first lens or between the first lens and the second lens. Optionally, the camera lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0063] The camera lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the five lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between lenses, etc., the incident light can be effectively converged, the total length of the camera lens can be reduced, and the processability of the camera lens can be improved, so that the structure of each lens is more compact, the camera lens is more conducive to production and processing, and has higher practicality. Through the above configuration, the camera lens according to the exemplary embodiment of the present application can have characteristics such as super telephoto, miniaturization, and good imaging quality.

[0064] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the fifth lens is an aspherical mirror surface. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens is an aspherical mirror surface. Optionally, the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all aspherical mirror surfaces.

[0065] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the camera lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the camera lens is not limited to including five lenses. If necessary, the camera lens may also include other numbers of lenses.

[0066] Specific embodiments of the imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0067] Example 1

[0068] The following reference Figures 1 to 2D An imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of a camera lens according to Embodiment 1 of the present application is shown.

[0069] like Figure 1 As shown, the camera lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0070] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0071] Table 1 shows basic parameters of the camera lens of Example 1, wherein the units of the curvature radius, thickness / distance and focal length are all millimeters (mm).

[0072]

[0073] Table 1

[0074] In this example, the total effective focal length f of the camera lens is 6.65 mm, the total length TTL of the camera lens (i.e., the distance from the object side surface S1 of the first lens E1 to the imaging surface S13 of the camera lens on the optical axis) is 6.05 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 of the camera lens ImgH is 2.76 mm.

[0075] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0076]

[0077] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Tables 2-1 and 2-2 respectively give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 and A 24 .

[0078] Face number A4 A6 A8 A10 A12 A14 S1 -1.3304E-04 -4.5179E-03 6.5519E-03 -7.7811E-03 6.0261E-03 -3.8513E-03 S2 -1.1563E-01 6.7975E-02 -8.9514E-03 -1.4858E-02 9.2650E-03 -2.1647E-03 S3 -1.0627E-01 2.0776E-02 -1.3455E-02 4.3697E-02 -5.0094E-02 2.2674E-02 S4 9.5861E-02 -2.9684E-01 4.1313E-01 -2.5652E-01 5.6947E-02 6.4761E-03 S5 2.0610E-01 -7.2236E-02 -8.9810E-04 4.5436E-02 -3.5318E-02 8.7575E-03 S6 -2.7507E-01 9.6892E-01 -1.6638E+00 1.8147E+00 -1.2765E+00 5.1811E-01 S7 -4.0500E-01 4.9508E-01 -5.8914E-01 5.5981E-01 -4.3689E-01 2.3959E-01 S8 -3.5573E-02 -7.1823E-02 2.7608E-01 -3.8382E-01 3.2333E-01 -1.4265E-01 S9 -5.4971E-02 1.0001E-02 2.1680E-03 -2.5455E-03 8.9396E-04 -1.2487E-04 S10 -6.7172E-02 1.4626E-02 -3.2200E-03 4.2726E-04 -2.9128E-05 5.5860E-06

[0079] Table 2-1

[0080]

[0081]

[0082] Table 2-2

[0083] Figure 2A The axial chromatic aberration curve of the imaging lens of Example 1 is shown, which indicates the deviation of the focusing point of light rays of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the imaging lens of Example 1 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 2C The distortion curve of the camera lens of Example 1 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. Figure 2D The relative illumination curve of the camera lens of Example 1 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 2A to FIG. 2D It can be seen that the camera lens provided in Example 1 can achieve good imaging quality.

[0084] Example 2

[0085] The following reference Figures 3 to 4D The camera lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of a camera lens according to Embodiment 2 of the present application is shown.

[0086] like Figure 3 As shown, the camera lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0087] The first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave. The second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is convex. The third lens E3 has negative focal power, its object side surface S5 is concave, and the image side surface S6 is concave. The fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave. The fifth lens E5 has negative focal power, its object side surface S9 is concave, and the image side surface S10 is convex. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0088] In this example, the total effective focal length f of the camera lens is 5.80 mm, the total length TTL of the camera lens is 5.51 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0089] Table 3 shows the basic parameters of the camera lens of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 4-1 and 4-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0090]

[0091]

[0092] Table 3

[0093] Face number A4 A6 A8 A10 A12 A14 S1 1.0377E-02 -8.6738E-02 3.2123E-01 -7.2810E-01 1.0493E+00 -9.9639E-01 S2 -6.1172E-02 -1.9995E-01 4.9278E-01 -5.2496E-01 2.9556E-01 -5.5947E-02 S3 -3.7007E-02 -2.9733E-01 6.1224E-01 -7.0701E-01 5.3609E-01 -2.3821E-01 S4 1.2181E-01 -2.2166E-01 -3.8882E-01 1.7658E+00 -2.6269E+00 2.1207E+00 S5 2.3838E-01 -3.5703E-02 -6.4402E-01 1.9818E+00 -3.0253E+00 2.7447E+00 S6 -3.5072E-01 1.6293E+00 -4.8578E+00 1.1158E+01 -1.8468E+01 2.0806E+01 S7 -4.7647E-01 8.3764E-01 -1.1216E+00 8.3976E-02 3.6668E+00 -9.1783E+00 S8 -9.0445E-02 6.0291E-01 -2.9940E+00 1.0069E+01 -2.1643E+01 2.9941E+01 S9 -1.0817E-02 -8.9326E-02 1.4530E-01 -1.3018E-01 7.0533E-02 -2.3819E-02 S10 1.2742E-01 -3.0843E-01 3.3579E-01 -2.2745E-01 9.7167E-02 -2.6477E-02

[0094] Table 4-1

[0095] Face number A16 A18 A20 A22 A24 S1 6.3113E-01 -2.6373E-01 6.9709E-02 -1.0549E-02 6.9606E-04 S2 -3.5797E-02 2.7033E-02 -7.0988E-03 6.9011E-04 0.0000E+00 S3 2.5551E-02 2.7691E-02 -1.2471E-02 1.6105E-03 0.0000E+00 S4 -1.0110E+00 2.8129E-01 -4.1494E-02 2.4239E-03 0.0000E+00 S5 -1.5331E+00 5.1458E-01 -9.4561E-02 7.2578E-03 0.0000E+00 S6 -1.5251E+01 6.8660E+00 -1.7075E+00 1.7928E-01 0.0000E+00 S7 1.1858E+01 -8.8066E+00 3.5308E+00 -5.9009E-01 0.0000E+00 S8 -2.6479E+01 1.4433E+01 -4.4073E+00 5.7575E-01 0.0000E+00 S9 5.0573E-03 -6.5726E-04 4.7825E-05 -1.4939E-06 0.0000E+00 S10 4.5551E-03 -4.7031E-04 2.5558E-05 -5.0563E-07 0.0000E+00

[0096] Table 4-2

[0097] Figure 4A The axial chromatic aberration curve of the imaging lens of Example 2 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 4B The astigmatism curve of the imaging lens of Example 2 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the camera lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The relative illumination curve of the camera lens of Example 2 is shown, which indicates the relative illumination values ​​corresponding to different image heights. 4A to 4D It can be seen that the camera lens provided in Example 2 can achieve good imaging quality.

[0098] Example 3

[0099] The following reference Figures 5 to 6D The imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of a camera lens according to Embodiment 3 of the present application is shown.

[0100] like Figure 5 As shown, the camera lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0101] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0102] In this example, the total effective focal length f of the camera lens is 6.03 mm, the total length TTL of the camera lens is 5.73 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0103] Table 5 shows the basic parameter table of the camera lens of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6-1 and Table 6-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0104]

[0105] Table 5

[0106]

[0107]

[0108] Table 6-1

[0109] Face number A16 A18 A20 A22 A24 S1 8.7898E-01 -3.9414E-01 1.1184E-01 -1.8195E-02 1.2930E-03 S2 -9.9048E-02 4.0936E-02 -8.7297E-03 7.6656E-04 0.0000E+00 S3 2.9500E-01 -1.1065E-01 2.3212E-02 -2.0925E-03 0.0000E+00 S4 -1.7636E+00 6.2401E-01 -1.2389E-01 1.0562E-02 0.0000E+00 S5 -2.7230E+00 1.0455E+00 -2.2663E-01 2.1185E-02 0.0000E+00 S6 -3.0848E+01 1.7079E+01 -5.4317E+00 7.5653E-01 0.0000E+00 S7 -1.3280E+01 6.9559E+00 -2.0686E+00 2.6623E-01 0.0000E+00 S8 -1.1898E+01 6.4130E+00 -1.9422E+00 2.5163E-01 0.0000E+00 S9 5.6181E-03 -7.4903E-04 5.6409E-05 -1.8338E-06 0.0000E+00 S10 4.3332E-03 -4.4868E-04 2.4765E-05 -5.1710E-07 0.0000E+00

[0110] Table 6-2

[0111] Fig. 6A The axial chromatic aberration curve of the imaging lens of Example 3 is shown, which indicates the deviation of the focusing point of light rays of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the imaging lens of Example 3 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the camera lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D The relative illumination curve of the camera lens of Example 3 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 6A to FIG. 6D It can be seen that the camera lens provided in Example 3 can achieve good imaging quality.

[0112] Example 4

[0113] The following reference Figures 7 to 8D An imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of a camera lens according to Embodiment 4 of the present application is shown.

[0114] like Figure 7 As shown, the camera lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0115] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0116] In this example, the total effective focal length f of the camera lens is 5.49 mm, the total length TTL of the camera lens is 5.20 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0117] Table 7 shows the basic parameter table of the camera lens of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0118]

[0119] Table 7

[0120] Face number A4 A6 A8 A10 A12 A14 S1 4.8401E-03 -5.5120E-02 2.2627E-01 -5.5186E-01 8.2662E-01 -7.9172E-01 S2 -8.1985E-02 -1.8258E-01 7.3934E-01 -1.4792E+00 2.0663E+00 -2.0753E+00 S3 -5.4827E-02 -2.8838E-01 1.0112E+00 -2.3423E+00 3.8949E+00 -4.5086E+00 S4 1.3946E-01 -2.7477E-01 3.9154E-02 7.8940E-01 -1.4736E+00 1.3102E+00 S5 1.6561E-01 -1.3805E-02 -4.0008E-01 1.6369E+00 -3.3850E+00 4.3220E+00 S6 -2.8575E-01 9.6977E-01 -2.6562E+00 6.5940E+00 -1.2820E+01 1.7819E+01 S7 -2.5539E-01 1.8802E-01 6.9225E-01 -4.7979E+00 1.4424E+01 -2.6847E+01 S8 4.6722E-02 1.3936E-02 -2.8232E-01 1.0947E+00 -2.4642E+00 3.4497E+00 S9 -3.1507E-01 6.6775E-01 -9.7931E-01 9.1433E-01 -5.6606E-01 2.3717E-01 S10 -1.2312E+00 2.1886E+00 -2.3753E+00 1.6584E+00 -7.7413E-01 2.4586E-01

[0121] Table 8-1

[0122]

[0123]

[0124] Table 8-2

[0125] Fig. 8AThe axial chromatic aberration curve of the imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8B The astigmatism curve of the imaging lens of Example 4 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 8C The distortion curve of the camera lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.8D The relative illumination curve of the camera lens of Example 4 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 8A to FIG. 8D It can be seen that the camera lens provided in Example 4 can achieve good imaging quality.

[0126] Example 5

[0127] The following reference Figures 9 to 10D The imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of a camera lens according to embodiment 5 of the present application is shown.

[0128] like Fig. 9 As shown, the camera lens includes, from the object side to the image side, a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0129] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0130] In this example, the total effective focal length f of the camera lens is 6.66 mm, the total length TTL of the camera lens is 6.32 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0131] Table 9 shows the basic parameters of the camera lens of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 10-1 and 10-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0132]

[0133]

[0134] Table 9

[0135] Face number A4 A6 A8 A10 A12 A14 S1 4.8428E-03 -4.3590E-02 1.3977E-01 -2.6887E-01 3.2029E-01 -2.4930E-01 S2 -1.0707E-01 1.5102E-02 4.5493E-02 -3.7573E-02 9.3021E-03 5.4506E-03 S3 -9.0234E-02 -6.7502E-02 1.5347E-01 -2.1952E-01 2.5932E-01 -2.0317E-01 S4 3.8082E-02 -1.8741E-01 2.2337E-01 -1.7913E-02 -1.9531E-01 2.1705E-01 S5 1.4783E-01 3.1278E-01 -1.1031E+00 1.9983E+00 -2.3448E+00 1.8415E+00 S6 -2.4230E-01 1.2556E+00 -3.4490E+00 7.0892E+00 -1.1008E+01 1.2241E+01 S7 -2.7793E-01 3.4598E-01 -2.9485E-01 -2.7413E-01 1.2668E+00 -2.0147E+00 S8 9.8124E-03 5.0594E-02 -3.0487E-01 9.4047E-01 -1.7041E+00 1.8735E+00 S9 -2.7829E-02 -4.7327E-02 9.4801E-02 -8.3526E-02 4.2935E-02 -1.3780E-02 S10 -9.1243E-02 1.9358E-02 9.7192E-03 -1.3154E-02 6.3975E-03 -1.8247E-03

[0136] Table 10-1

[0137] Face number A16 A18 A20 A22 A24 S1 1.2874E-01 -4.3679E-02 9.3310E-03 -1.1354E-03 5.9943E-05 S2 -6.1029E-03 2.5369E-03 -5.1350E-04 4.1719E-05 0.0000E+00 S3 9.7785E-02 -2.7906E-02 4.3344E-03 -2.8172E-04 0.0000E+00 S4 -1.1933E-01 3.7842E-02 -6.6600E-03 5.0900E-04 0.0000E+00 S5 -9.5831E-01 3.1710E-01 -6.0428E-02 5.0518E-03 0.0000E+00 S6 -9.2609E+00 4.4959E+00 -1.2600E+00 1.5491E-01 0.0000E+00 S7 1.8225E+00 -9.7521E-01 2.8742E-01 -3.6053E-02 0.0000E+00 S8 -1.2806E+00 5.3489E-01 -1.2520E-01 1.2584E-02 0.0000E+00 S9 2.7898E-03 -3.4541E-04 2.3855E-05 -7.0353E-07 0.0000E+00 S10 3.3083E-04 -3.6962E-05 2.1914E-06 -4.4405E-08 0.0000E+00

[0138] Table 10-2

[0139] Fig. 10A The axial chromatic aberration curve of the imaging lens of Example 5 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens. Fig. 10B The astigmatism curve of the imaging lens of Example 5 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 10C The distortion curve of the camera lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10D The relative illumination curve of the camera lens of Example 5 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 10A to FIG. 10D It can be seen that the camera lens provided in Example 5 can achieve good imaging quality.

[0140] Example 6

[0141] The following reference Figures 11 to 12D The imaging lens according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of a camera lens according to Example 6 of the present application is shown.

[0142] like Fig.11 As shown, the camera lens includes, from the object side to the image side, a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0143] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0144] In this example, the total effective focal length f of the camera lens is 5.93 mm, the total length TTL of the camera lens is 5.64 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0145] Table 11 shows the basic parameter table of the camera lens of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 12-1 and 12-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0146]

[0147] Table 11

[0148] Face number A4 A6 A8 A10 A12 A14 S1 1.1863E-02 -8.9876E-02 3.1553E-01 -6.7955E-01 9.2162E-01 -8.2306E-01 S2 -1.2705E-01 1.9755E-01 -5.3833E-01 9.7500E-01 -1.0817E+00 7.7402E-01 S3 -1.1714E-01 9.2073E-02 -2.3050E-01 2.1325E-01 1.0258E-01 -3.5760E-01 S4 -2.2778E-02 1.5813E-01 -6.8913E-01 1.4050E+00 -1.5600E+00 1.0249E+00 S5 1.5131E-01 2.2935E-01 -9.5740E-01 1.8919E+00 -2.3095E+00 1.8290E+00 S6 -1.5462E-01 9.9474E-01 -3.0270E+00 6.5680E+00 -1.0345E+01 1.1389E+01 S7 -3.8875E-01 8.1254E-01 -1.5660E+00 2.5059E+00 -3.4071E+00 3.7775E+00 S8 -1.3497E-01 5.8392E-01 -2.5582E+00 9.3827E+00 -2.2896E+01 3.6235E+01 S9 5.0533E-02 -1.9724E-01 2.4164E-01 -1.7515E-01 8.0273E-02 -2.3487E-02 S10 5.1122E-02 6.6060E-02 -3.2322E-01 3.7253E-01 -2.1947E-01 7.6556E-02

[0149] Table 12-1

[0150] Face number A16 A18 A20 A22 A24 S1 4.9144E-01 -1.9442E-01 4.8926E-02 -7.0903E-03 4.5038E-04 S2 -3.6238E-01 1.0763E-01 -1.8419E-02 1.3826E-03 0.0000E+00 S3 3.1205E-01 -1.3831E-01 3.1980E-02 -3.0734E-03 0.0000E+00 S4 -4.0779E-01 9.5738E-02 -1.2062E-02 6.1867E-04 0.0000E+00 S5 -9.4638E-01 3.1187E-01 -6.0051E-02 5.1922E-03 0.0000E+00 S6 -8.4019E+00 3.9351E+00 -1.0552E+00 1.2317E-01 0.0000E+00 S7 -3.0404E+00 1.5706E+00 -4.5247E-01 5.3849E-02 0.0000E+00 S8 -3.6691E+01 2.2904E+01 -8.0224E+00 1.2060E+00 0.0000E+00 S9 4.3576E-03 -4.9489E-04 3.1305E-05 -8.4183E-07 0.0000E+00 S10 -1.6528E-02 2.1795E-03 -1.6147E-04 5.1629E-06 0.0000E+00

[0151] Table 12-2

[0152] Fig. 12A The axial chromatic aberration curve of the imaging lens of Example 6 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 12B The astigmatism curve of the imaging lens of Example 6 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 12C The distortion curve of the camera lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12D The relative illumination curve of the camera lens of Example 6 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 12A to FIG. 12D It can be seen that the camera lens provided in Example 6 can achieve good imaging quality.

[0153] Example 7

[0154] The following reference Figures 13 to 14D An imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of a camera lens according to Example 7 of the present application is shown.

[0155] like Fig.13 As shown, the camera lens includes, from the object side to the image side, a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0156] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0157] In this example, the total effective focal length f of the camera lens is 5.80 mm, the total length TTL of the camera lens is 5.51 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0158] Table 13 shows the basic parameter table of the camera lens of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0159]

[0160] Table 13

[0161] Face number A4 A6 A8 A10 A12 A14 S1 1.5841E-02 -1.1955E-01 4.2551E-01 -9.6424E-01 1.3875E+00 -1.3087E+00 S2 -1.2992E-01 1.4215E-01 -1.4975E-01 2.0352E-01 -2.8902E-01 2.7396E-01 S3 -1.1669E-01 2.0431E-02 1.7265E-01 -4.1447E-01 5.3109E-01 -4.9913E-01 S4 -4.3744E-02 5.3335E-02 -8.6596E-01 3.5243E+00 -7.4965E+00 9.3934E+00 S5 1.4750E-01 -3.3476E-01 1.2366E+00 -2.6247E+00 3.2954E+00 -2.5124E+00 S6 -2.1275E-02 2.4080E-01 1.0377E+00 -6.1218E+00 1.4461E+01 -2.0170E+01 S7 -3.5706E-01 8.6945E-02 3.6393E+00 -1.5742E+01 3.4750E+01 -4.7093E+01 S8 -2.3104E-01 2.2868E-01 3.1540E-01 -7.7205E-01 -7.0355E-01 4.5027E+00 S9 -3.3662E-02 -6.8033E-02 9.8084E-02 -7.5623E-02 3.8010E-02 -1.2621E-02 S10 -1.0750E-01 1.1582E-01 -1.3440E-01 1.0098E-01 -4.9802E-02 1.6369E-02

[0162] Table 14-1

[0163] Face number A16 A18 A20 A22 A24 S1 8.1557E-01 -3.3236E-01 8.5126E-02 -1.2428E-02 7.8846E-04 S2 -1.5587E-01 5.1788E-02 -9.3024E-03 6.9927E-04 0.0000E+00 S3 3.5127E-01 -1.6237E-01 4.1848E-02 -4.4856E-03 0.0000E+00 S4 -7.1602E+00 3.2657E+00 -8.2019E-01 8.7366E-02 0.0000E+00 S5 1.1433E+00 -2.8862E-01 3.3159E-02 -7.4970E-04 0.0000E+00 S6 1.7834E+01 -9.8670E+00 3.1289E+00 -4.3444E-01 0.0000E+00 S7 4.0745E+01 -2.2033E+01 6.8071E+00 -9.1934E-01 0.0000E+00 S8 -6.9373E+00 5.3041E+00 -2.0760E+00 3.3206E-01 0.0000E+00 S9 2.7239E-03 -3.6598E-04 2.7758E-05 -9.0734E-07 0.0000E+00 S10 -3.5631E-03 4.9448E-04 -3.9729E-05 1.4103E-06 0.0000E+00

[0164] Table 14-2

[0165] Fig.14A The axial chromatic aberration curve of the imaging lens of Example 7 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 14B The astigmatism curve of the imaging lens of Example 7 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 14C The distortion curve of the camera lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.14D The relative illumination curve of the camera lens of Example 7 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 14A to FIG. 14D It can be seen that the camera lens provided in Example 7 can achieve good imaging quality.

[0166] Example 8

[0167] The following reference Figures 15 to 16D An imaging lens according to Embodiment 8 of the present application is described. Fig.15 A schematic structural diagram of a camera lens according to Example 8 of the present application is shown.

[0168] like Fig.15 As shown, the camera lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0169] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0170] In this example, the total effective focal length f of the camera lens is 5.98 mm, the total length TTL of the camera lens is 5.68 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens is 2.76 mm.

[0171] Table 15 shows the basic parameter table of the camera lens of Example 8, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 16-1 and Table 16-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 8, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0172]

[0173] Table 15

[0174] Face number A4 A6 A8 A10 A12 A14 S1 8.9039E-03 -7.7932E-02 3.1476E-01 -7.8221E-01 1.2408E+00 -1.3003E+00 S2 -4.9472E-02 -3.5101E-01 1.1950E+00 -2.0725E+00 2.3020E+00 -1.7099E+00 S3 -3.1414E-02 -5.0618E-01 1.5173E+00 -2.6961E+00 3.2228E+00 -2.6392E+00 S4 8.1407E-02 -3.1477E-01 5.8620E-01 -6.3732E-01 3.3207E-01 6.5781E-02 S5 2.0804E-01 5.6438E-02 -4.5635E-01 8.8884E-01 -1.1316E+00 1.0594E+00 S6 -3.1362E-01 1.6392E+00 -5.1716E+00 1.2509E+01 -2.3007E+01 3.0485E+01 S7 -4.2709E-01 7.3082E-01 -1.2129E+00 1.9606E+00 -3.7446E+00 6.2653E+00 S8 -2.9136E-02 8.0071E-03 -5.7303E-02 1.2640E+00 -4.9163E+00 9.5402E+00 S9 3.3897E-02 -2.0252E-01 3.2539E-01 -3.0971E-01 1.8867E-01 -7.5432E-02 S10 -7.8056E-02 1.0329E-01 -1.5157E-01 1.2885E-01 -6.7108E-02 2.2148E-02

[0175] Table 16-1

[0176]

[0177]

[0178] Table 16-2

[0179] Fig.16AThe axial chromatic aberration curve of the imaging lens of Example 8 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 16B The astigmatism curve of the imaging lens of Example 8 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 16C The distortion curve of the camera lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The relative illumination curve of the camera lens of Example 8 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 16A to FIG. 16D It can be seen that the camera lens provided in Example 8 can achieve good imaging quality.

[0180] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0181] Conditional formula\Example 1 2 3 4 5 6 7 8 f2 / f1 0.55 0.52 0.49 0.48 0.46 0.48 0.69 0.55 TTL / EPD 1.80 1.88 1.88 1.86 1.88 1.88 1.88 1.88 CT4 / TD 0.04 0.05 0.05 0.05 0.08 0.06 0.05 0.05 T45 / TD 0.44 0.43 0.43 0.42 0.42 0.45 0.46 0.39 10×|(R1-R3) / (R1+R3)| 0.35 0.22 0.21 0.51 0.00 0.01 0.99 0.09 10×(R1 / f-R1 / f1) 0.11 0.41 0.42 0.78 0.34 0.79 1.11 0.29 f1234 / f 0.89 0.94 0.91 0.88 0.89 0.92 0.88 0.86 CT3 / ET3 0.52 0.40 0.41 0.29 0.35 0.79 0.95 0.48 ET5 / CT5 0.58 0.32 0.27 0.45 0.31 0.35 0.46 0.25 SAG52 / CT5 -1.61 -2.03 -1.84 -1.97 -1.79 -2.19 -2.59 -1.57 DT32 / DT41 1.01 1.01 1.02 1.02 1.01 1.06 1.02 1.01 DT41 / ImgH 0.39 0.42 0.41 0.43 0.43 0.41 0.41 0.41 YC31 / DT31 0.70 0.78 0.83 0.68 0.86 0.85 0.93 0.71 10×(T12+T23+T34) / TTL 0.51 0.63 0.67 0.68 0.65 0.59 0.57 0.63

[0182] Table 17

[0183] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive 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 in 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 only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A camera lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive refractive power, and its object side surface is convex and its image side surface is concave; a second lens having positive optical power and a convex object-side surface; a third lens having positive or negative optical power, whose object side surface is concave; a fourth lens element having positive or negative refractive power, whose object-side surface is convex and whose image-side surface is concave; and a fifth lens having negative optical power; The number of lenses having optical power in the camera lens is five; At least one of the third lens and the fourth lens has negative optical power; The effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 0.46≤f2 / f1<0.7; The distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and the entrance pupil diameter EPD of the camera lens satisfy the following conditions: 1.8≤TTL / EPD<1.9; A distance T45 between the fourth lens and the fifth lens on the optical axis and a distance TD from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis satisfy: 0.38<T45 / TD≤0.

46.

2. The imaging lens according to claim 1, wherein: A center thickness CT4 of the fourth lens and a distance TD from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis satisfy: 0.04≤CT4 / TD<0.

1.

3. The imaging lens according to claim 1, wherein: A curvature radius R1 of the object-side surface of the first lens and a curvature radius R3 of the object-side surface of the second lens satisfy: 10×|(R1-R3) / (R1+R3)|<1.

4. The imaging lens according to claim 1, wherein: The curvature radius R1 of the object side surface of the first lens, the total effective focal length f of the camera lens, and the effective focal length f1 of the first lens satisfy: 0.11≤10×(R1 / f-R1 / f1)≤1.

11.

5. The imaging lens according to claim 1, wherein: The combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens and the total effective focal length f of the camera lens satisfy the following: 0.86≤f1234 / f≤0.

94.

6. The imaging lens according to claim 1, wherein: The center thickness CT3 of the third lens and the edge thickness ET3 of the third lens satisfy: 0.29≤CT3 / ET3<1.

7. The imaging lens according to claim 1, wherein: The center thickness CT5 of the fifth lens and the edge thickness ET5 of the fifth lens satisfy: 0.25≤ET5 / CT5<0.

6.

8. The imaging lens according to claim 1, wherein: A distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis and a center thickness CT5 of the fifth lens satisfy: -2.6<SAG52 / CT5≤-1.

57.

9. The imaging lens according to claim 1, wherein: An effective half-aperture DT32 of the image-side surface of the third lens and an effective half-aperture DT41 of the object-side surface of the fourth lens satisfy: 1<DT32 / DT41<1.

1.

10. The imaging lens according to claim 1, wherein: The effective half aperture DT41 of the object side surface of the fourth lens and half the diagonal length ImgH of the effective pixel area of ​​the camera lens satisfy the following: 0.39≤DT41 / ImgH≤0.

43.

11. The imaging lens according to claim 1, wherein: The object-side surface of the third lens includes at least one inflection point, and a vertical distance YC31 from the inflection point to the optical axis and an effective half-aperture DT31 of the object-side surface of the third lens satisfy: 0.68≤YC31 / DT31≤0.

93.

12. The imaging lens according to claim 1, wherein: A distance T12 between the first lens and the second lens on the optical axis, a distance T23 between the second lens and the third lens on the optical axis, and a distance T34 between the third lens and the fourth lens on the optical axis satisfy: 0.51≤10×(T12+T23+T34) / TTL<0.7.

Images