Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with optical power, whose object side surface is convex; a second lens with negative optical power, whose image side surface is concave; a third lens with optical power; a fourth lens with optical power; a fifth lens with positive optical power, whose object side surface is convex and whose image side surface is concave; and a sixth lens with negative optical power, whose object side surface is convex. The combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens satisfy: 0.5<f12 / f≤1.5.

Description

Technical Field

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

[0002] As portable electronic products such as smartphones become more and more popular, people have higher and higher requirements for the quality of photos taken by smartphones and other portable electronic products. As the performance of charge-coupled devices (CCDs) and complementary metal oxide semiconductor (CMOS) image sensors improves and their size decreases, correspondingly, camera lenses also need to meet the requirements of high pixels and miniaturization.

[0003] Imaging lenses that can achieve good imaging quality while ensuring miniaturization have become the goal pursued by many manufacturers of portable electronic products such as mobile phones. Summary of the invention

[0004] On one hand, the present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with optical power, whose object side surface is convex; a second lens with negative optical power, whose image side surface is concave; a third lens with optical power; a fourth lens with optical power; a fifth lens with positive optical power, whose object side surface is convex and whose image side surface is concave; and a sixth lens with negative optical power, whose object side surface is convex.

[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 sixth lens is an aspherical mirror surface.

[0006] In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f / EPD<2.

[0007] In one embodiment, the total effective focal length f of the optical imaging lens and half of the maximum field of view HFOV of the optical imaging lens may satisfy: tan(HFOV)×f>4.58mm.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens may satisfy: f6 / f<-1.44.

[0009] In one embodiment, the maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens may satisfy: 0.6<DT31 / DT21<1.

[0010] In one embodiment, the effective focal length f1 of the first lens and the curvature radius R1 of the object-side surface of the first lens may satisfy: 0.2<R1 / f1<0.6.

[0011] In one embodiment, a distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis and 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 may satisfy: 0.1<SAG51 / SAG52≤0.63.

[0012] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens element may satisfy: 0<f / f5<0.4.

[0013] In one embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: -1.2<f2 / (R3+R4)<-0.6.

[0014] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, and a distance TTL on the optical axis from the object-side surface of the first lens to the imaging surface of the optical imaging lens may satisfy: 0.8<TTL / (R11+R12)<1.3.

[0015] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: (R10-R9) / (R10+R9)≤0.13.

[0016] In one embodiment, a spacing distance T12 between the first lens and the second lens on the optical axis and a spacing distance T23 between the second lens and the third lens on the optical axis may satisfy: 0.14<T12 / T23<0.6.

[0017] In one embodiment, the center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens may satisfy: 0.4<CT4 / CT3<1.2.

[0018] In one embodiment, the center thickness CT1 of the first lens, the center thickness CT5 of the fifth lens, the center thickness CT6 of the sixth lens, and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 0<(CT1+CT5+CT6) / TTL≤0.36.

[0019] In one embodiment, the combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens may satisfy the following: 0.5<f12 / f≤1.5.

[0020] The present application provides an optical imaging lens which is applicable to portable electronic products, has miniaturization and good imaging quality, by reasonably allocating optical focal length and optimizing optical parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0023] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0024] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0025] FIG. 4A to FIG. 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0026] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0027] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0028] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0029] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0030] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0031] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0032] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0033] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0034] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0035] FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown;

[0036] Fig.15 A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0037] FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown;

[0038] Fig.17 A schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application is shown; and

[0039] 18A to 18D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 9 are respectively shown. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] The features, principles and other aspects of the present application are described in detail below.

[0048] The optical imaging lens according to the exemplary embodiment of the present application may include six lenses with optical power, namely 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 sequence from the object side to the image side along the optical axis. Any two adjacent lenses from the first lens to the sixth lens may have a spacing distance between them.

[0049] In an exemplary embodiment, the first lens may have positive optical power or negative optical power, and its object side surface may be convex; the second lens may have negative optical power, and its image side surface may be concave; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power; the fifth lens may have positive optical power, its object side surface may be convex, and its image side surface may be concave; the sixth lens may have negative optical power, and its object side surface may be convex.

[0050] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f / EPD<2, where f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. Satisfying f / EPD<2 can enable the optical system to better correct primary aberrations, so that the system has good imaging quality and low sensitivity, and the system is easy to be injection molded and assembled with a high yield.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: tan(HFOV)×f>4.58mm, where f is the total effective focal length of the optical imaging lens, and HFOV is half of the maximum field of view of the optical imaging lens. Satisfying tan(HFOV)×f>4.58mm can enable the optical system to better correct primary aberrations, so that the system has good imaging quality and low sensitivity, and the system is easy to be injection molded and assembled with a high yield.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f6 / f<-1.44, where f is the total effective focal length of the optical imaging lens, and f6 is the effective focal length of the sixth lens. More specifically, f6 and f may further satisfy: f6 / f<-1.60. Satisfying f6 / f<-1.44 can enable the optical system to better correct primary aberrations, so that the system has good imaging quality and low sensitivity, and the system is easy to be injection molded and assembled with a high yield.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.6<DT31 / DT21<1, wherein DT31 is the maximum effective radius of the object side of the third lens, and DT21 is the maximum effective radius of the object side of the second lens. More specifically, DT31 and DT21 may further satisfy: 0.8<DT31 / DT21<0.9. Satisfying 0.6<DT31 / DT21<1 is conducive to making the spatial distribution of the optical imaging lens more reasonable while achieving a large image plane.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2<R1 / f1<0.6, where f1 is the effective focal length of the first lens, and R1 is the radius of curvature of the object side of the first lens. More specifically, R1 and f1 may further satisfy: 0.4<R1 / f1<0.5. Satisfying 0.2<R1 / f1<0.6 can ensure the performance of the optical system, reduce tolerance sensitivity, and make it have better mass production feasibility.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1<SAG51 / SAG52≤0.63, wherein SAG51 is the distance from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens on the optical axis, and SAG52 is the distance 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 on the optical axis. More specifically, SAG51 and SAG52 may further satisfy: 0.5<SAG51 / SAG52≤0.63. Satisfying 0.1<SAG51 / SAG52≤0.63 is conducive to limiting lens bending and reducing the difficulty of lens manufacturing and molding.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<f / f5<0.4, where f is the total effective focal length of the optical imaging lens, and f5 is the effective focal length of the fifth lens. More specifically, f and f5 may further satisfy: 0.1<f / f5<0.3. Satisfying 0<f / f5<0.4 is beneficial to the reasonable spatial distribution of the focal power of each lens, and is also beneficial to reducing the aberration of the optical imaging lens.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -1.2<f2 / (R3+R4)<-0.6, wherein f2 is the effective focal length of the second lens, R3 is the radius of curvature of the object side of the second lens, and R4 is the radius of curvature of the image side of the second lens. More specifically, f2, R3, and R4 may further satisfy: -1.1<f2 / (R3+R4)<-0.8. Satisfying -1.2<f2 / (R3+R4)<-0.6 can avoid excessive bending of the second lens, which is beneficial to processing and molding.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.8<TTL / (R11+R12)<1.3, wherein R11 is the radius of curvature of the object side surface of the sixth lens, R12 is the radius of curvature of the image side surface of the sixth lens, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis. More specifically, TTL, R11 and R12 may further satisfy: 1.0<TTL / (R11+R12)<1.1. Satisfying 0.8<TTL / (R11+R12)<1.3 can effectively ensure the curvature of the first lens, which is beneficial to the processing and molding of the first lens.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: (R10-R9) / (R10+R9)≤0.13, where R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. Satisfying (R10-R9) / (R10+R9)≤0.13 can effectively control the contribution of the astigmatism of the object side surface and the image side surface of the fifth lens, thereby effectively and reasonably controlling the image quality of the intermediate field of view and aperture zone.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.14<T12 / T23<0.6, wherein T12 is the spacing distance between the first lens and the second lens on the optical axis, and T23 is the spacing distance between the second lens and the third lens on the optical axis. More specifically, T12 and T23 may further satisfy: 0.3<T12 / T23<0.5. Satisfying 0.14<T12 / T23<0.6 can better ensure the processability and manufacturability requirements of the lens.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.4<CT4 / CT3<1.2, wherein CT3 is the center thickness of the third lens, and CT4 is the center thickness of the fourth lens. More specifically, CT4 and CT3 may further satisfy: 0.8<CT4 / CT3<1.1. Satisfying 0.4<CT4 / CT3<1.2 is conducive to correcting the axial chromatic aberration of the optical system, thereby obtaining better imaging performance.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<(CT1+CT5+CT6) / TTL≤0.36, wherein CT1 is the center thickness of the first lens, CT5 is the center thickness of the fifth lens, CT6 is the center thickness of the sixth lens, and TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis. More specifically, CT1, CT5, CT6 and TTL may further satisfy: 0.3<(CT1+CT5+CT6) / TTL≤0.36. Satisfying 0<(CT1+CT5+CT6) / TTL≤0.36 can effectively ensure the thickness of each optical component, so that it can better correct distortion and chromatic aberration.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5<f12 / f≤1.5, wherein f12 is the combined focal length of the first lens and the second lens, and f is the total effective focal length of the optical imaging lens. More specifically, f12 and f may further satisfy: 1.0<f12 / f≤1.2. Satisfying 0.5<f12 / f≤1.5 is conducive to the reasonable spatial distribution of the focal power of each lens, and is conducive to reducing the aberration of the optical imaging lens.

[0064] In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture provided between the object side and the first lens. Optionally, the optical imaging 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. The present application proposes an optical imaging lens having characteristics such as an ultra-large aperture, a large image surface, ultra-thinness, and good imaging quality. The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the six lenses described above. By reasonably allocating the optical power, surface shape, center thickness of each lens, and axial spacing between each lens, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing.

[0065] 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 sixth 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, the fifth lens and the sixth 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, the fifth lens and the sixth lens are all aspherical mirror surfaces.

[0066] 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 optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiments, the optical imaging lens is not limited to including six lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0067] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0068] Example 1

[0069] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0070] like Figure 1 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0071] 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 negative 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 convex, and its image side surface S6 is concave. 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 positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0072] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0073]

[0074] Table 1

[0075] In this example, the total effective focal length f of the optical imaging lens is 5.56 mm, the total length TTL of the optical imaging lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens on the optical axis) is 6.11 mm, half of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens ImgH is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.78°, and the aperture value Fno of the optical imaging lens is 1.88.

[0076] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the sixth lens E6 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:

[0077]

[0078] 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. Table 2 below gives 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 and A 20 .

[0079] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.9647E-03 9.2367E-03 -2.6472E-02 4.6095E-02 -4.9734E-02 3.3492E-02 -1.3831E-02 3.2155E-03 -3.3026E-04 S2 -2.0080E-02 1.7840E-02 -1.3237E-02 1.6949E-02 -2.1777E-02 1.6972E-02 -7.7097E-03 1.8805E-03 -1.9168E-04 S3 -5.3457E-02 4.2246E-02 7.7523E-03 -5.2284E-02 7.6902E-02 -6.8843E-02 3.8462E-02 -1.2017E-02 1.6061E-03 S4 -3.1187E-02 6.8881E-02 -1.4458E-01 3.7709E-01 -6.2412E-01 6.2667E-01 -3.6787E-01 1.1492E-01 -1.4132E-02 S5 -4.7631E-02 2.8993E-02 -1.0185E-01 2.1411E-01 -3.3202E-01 3.4275E-01 -2.2220E-01 8.0798E-02 -1.2462E-02 S6 -5.7131E-02 5.0157E-02 -1.0112E-01 1.3793E-01 -1.3511E-01 8.3131E-02 -2.7718E-02 3.2445E-03 2.9885E-04 S7 -7.8491E-02 4.7672E-03 1.1277E-01 -2.6542E-01 3.3057E-01 -2.4758E-01 1.1112E-01 -2.7639E-02 2.9215E-03 S8 -7.7426E-02 1.7965E-02 2.5246E-02 -4.2974E-02 3.5667E-02 -1.6447E-02 4.2203E-03 -5.6627E-04 3.1064E-05 S9 -2.6942E-02 -7.3058E-03 3.0410E-03 -2.6990E-03 1.3324E-03 -3.1817E-04 4.0459E-05 -2.6731E-06 7.2628E-08 S10 -3.3905E-02 1.7976E-02 -1.3480E-02 5.3058E-03 -1.3130E-03 2.1400E-04 -2.2133E-05 1.3009E-06 -3.2720E-08 S11 -1.7948E-01 6.4763E-02 -1.6252E-02 2.9964E-03 -3.9230E-04 3.4910E-05 -1.9977E-06 6.6191E-08 -9.6495E-10 S12 -1.5835E-01 6.1466E-02 -1.9998E-02 4.5852E-03 -6.8949E-04 6.5925E-05 -3.8464E-06 1.2466E-07 -1.7182E-09

[0080] Table 2

[0081] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0082] Example 2

[0083] The following reference Figures 3 to 4D The optical imaging 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 an optical imaging lens according to Embodiment 2 of the present application is shown.

[0084] like Figure 3 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0085] 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 negative 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 concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0086] In this example, the total effective focal length f of the optical imaging lens is 5.52 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.12°, and the aperture value Fno of the optical imaging lens is 1.88.

[0087] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 4 shows 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 Example 1.

[0088]

[0089] Table 3

[0090] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.6741E-03 9.2523E-03 -2.7804E-02 5.0623E-02 -5.6637E-02 3.9234E-02 -1.6537E-02 3.8980E-03 -4.0303E-04 S2 -1.8522E-02 1.9728E-02 -3.3766E-02 6.7868E-02 -9.0052E-02 7.1434E-02 -3.3393E-02 8.4642E-03 -8.9686E-04 S3 -5.0962E-02 2.9032E-02 3.8672E-02 -1.1433E-01 1.6584E-01 -1.4968E-01 8.2736E-02 -2.5403E-02 3.3316E-03 S4 -2.7775E-02 5.3973E-02 -9.8320E-02 2.4854E-01 -3.7402E-01 3.1776E-01 -1.3560E-01 1.7790E-02 3.1993E-03 S5 -4.2533E-02 -1.6060E-03 -1.5871E-02 1.1346E-02 3.1501E-03 -3.2992E-02 4.6333E-02 -2.8610E-02 6.6863E-03 S6 -4.4115E-02 7.5109E-03 -7.6228E-03 -5.1734E-02 1.4905E-01 -2.0217E-01 1.5268E-01 -6.1237E-02 1.0179E-02 S7 -6.7874E-02 -4.8697E-02 2.4293E-01 -5.0928E-01 6.4430E-01 -5.0536E-01 2.4127E-01 -6.4459E-02 7.3571E-03 S8 -7.1104E-02 -5.5883E-03 6.4384E-02 -8.4650E-02 6.5561E-02 -2.9727E-02 7.6735E-03 -1.0479E-03 5.8920E-05 S9 -2.5182E-02 -1.3474E-02 8.9264E-03 -5.5040E-03 2.1491E-03 -4.7184E-04 5.8636E-05 -3.8924E-06 1.0776E-07 S10 -3.3202E-02 1.3630E-02 -1.0638E-02 4.4043E-03 -1.1719E-03 2.0719E-04 -2.3049E-05 1.4353E-06 -3.7730E-08 S11 -1.7652E-01 6.1725E-02 -1.4843E-02 2.6194E-03 -3.3018E-04 2.8521E-05 -1.5972E-06 5.2153E-08 -7.5353E-10 S12 -1.5530E-01 5.9246E-02 -1.9090E-02 4.3698E-03 -6.5515E-04 6.2152E-05 -3.5813E-06 1.1424E-07 -1.5466E-09

[0091] Table 4

[0092] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 4A to FIG. 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0093] Example 3

[0094] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0095] like Figure 5 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0096] 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 negative 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 convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0097] In this example, the total effective focal length f of the optical imaging lens is 5.52 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.05°, and the aperture value Fno of the optical imaging lens is 1.88.

[0098] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6 shows 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.

[0099]

[0100]

[0101] Table 5

[0102] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.1266E-03 4.4829E-03 -1.1240E-02 1.7882E-02 -1.8063E-02 1.1583E-02 -4.7142E-03 1.1243E-03 -1.2758E-04 S2 -1.8988E-02 1.5897E-02 -1.0331E-02 1.5799E-02 -2.6390E-02 2.5280E-02 -1.3816E-02 4.0319E-03 -4.9078E-04 S3 -5.4715E-02 4.9109E-02 -2.8394E-02 4.6432E-02 -7.8869E-02 7.9735E-02 -4.5975E-02 1.4302E-02 -1.8586E-03 S4 -3.2564E-02 6.6634E-02 -1.2579E-01 3.0642E-01 -4.6478E-01 4.1012E-01 -1.9221E-01 3.6340E-02 8.9879E-04 S5 -4.6695E-02 7.7507E-03 8.5172E-03 -1.6340E-01 4.6406E-01 -6.9726E-01 5.9488E-01 -2.7233E-01 5.2101E-02 S6 -4.8312E-02 7.0360E-03 2.8730E-02 -1.4644E-01 2.6877E-01 -2.8449E-01 1.7972E-01 -6.2937E-02 9.4409E-03 S7 -6.9572E-02 -4.0387E-02 2.3307E-01 -5.0691E-01 6.5382E-01 -5.2100E-01 2.5198E-01 -6.8015E-02 7.8306E-03 S8 -7.0676E-02 -4.9248E-03 6.3236E-02 -8.4758E-02 6.6251E-02 -3.0115E-02 7.7699E-03 -1.0588E-03 5.9323E-05 S9 -2.7393E-02 -9.4124E-03 4.4282E-03 -2.8302E-03 1.2041E-03 -2.6818E-04 3.2513E-05 -2.0638E-06 5.4029E-08 S10 -3.5506E-02 1.8046E-02 -1.3977E-02 5.8122E-03 -1.5280E-03 2.6162E-04 -2.7922E-05 1.6677E-06 -4.2210E-08 S11 -1.7946E-01 6.4899E-02 -1.6344E-02 3.0281E-03 -3.9837E-04 3.5544E-05 -2.0316E-06 6.6921E-08 -9.6542E-10 S12 -1.5712E-01 6.0545E-02 -1.9583E-02 4.4502E-03 -6.5835E-04 6.1519E-05 -3.4924E-06 1.0986E-07 -1.4686E-09

[0103] Table 6

[0104] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D The magnification chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0105] Example 4

[0106] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0107] like Figure 7 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0108] 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 negative 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 convex, and its image side surface S6 is concave. 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 positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0109] In this example, the total effective focal length f of the optical imaging lens is 5.52 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.14°, and the aperture value Fno of the optical imaging lens is 1.88.

[0110] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 8 shows 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 Example 1.

[0111]

[0112] Table 7

[0113]

[0114]

[0115] Table 8

[0116] Fig. 8A The axial chromatic aberration curve of the optical 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 optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.8D The magnification chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0117] Example 5

[0118] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0119] like Fig. 9 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0120] 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 negative 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 convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0121] In this example, the total effective focal length f of the optical imaging lens is 5.54 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 39.95°, and the aperture value Fno of the optical imaging lens is 1.88.

[0122] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 10 shows 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.

[0123]

[0124]

[0125] Table 9

[0126] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.4118E-03 6.2110E-03 -1.5808E-02 2.4824E-02 -2.4293E-02 1.4912E-02 -5.7171E-03 1.2704E-03 -1.3424E-04 S2 -2.1055E-02 2.2263E-02 -2.9068E-02 5.4666E-02 -7.5540E-02 6.2894E-02 -3.0911E-02 8.2789E-03 -9.3413E-04 S3 -5.5558E-02 5.2053E-02 -2.9565E-02 4.2251E-02 -6.8093E-02 6.6301E-02 -3.6613E-02 1.0888E-02 -1.3494E-03 S4 -2.7444E-02 3.9901E-02 3.2724E-03 -6.6359E-02 1.9013E-01 -2.9870E-01 2.6724E-01 -1.2625E-01 2.4907E-02 S5 -4.4177E-02 -2.4761E-02 1.6283E-01 -5.5217E-01 1.0549E+00 -1.2324E+00 8.6886E-01 -3.4003E-01 5.6933E-02 S6 -7.0837E-02 7.2194E-02 -1.4444E-01 2.0921E-01 -2.1648E-01 1.4244E-01 -5.4035E-02 9.7580E-03 -4.0818E-04 S7 -8.3509E-02 1.1168E-03 1.4240E-01 -3.4750E-01 4.5865E-01 -3.6630E-01 1.7572E-01 -4.6725E-02 5.2768E-03 S8 -7.3959E-02 8.5617E-03 4.1611E-02 -6.1216E-02 4.9994E-02 -2.3401E-02 6.1543E-03 -8.4833E-04 4.7752E-05 S9 -2.5151E-02 -1.0560E-02 4.3986E-03 -2.3752E-03 9.7102E-04 -2.1361E-04 2.5644E-05 -1.6103E-06 4.1656E-08 S10 -2.2024E-02 6.2323E-03 -7.3684E-03 3.3995E-03 -9.2969E-04 1.6277E-04 -1.7604E-05 1.0565E-06 -2.6639E-08 S11 -1.7867E-01 6.4407E-02 -1.6309E-02 3.0716E-03 -4.1364E-04 3.7855E-05 -2.2160E-06 7.4505E-08 -1.0920E-09 S12 -1.6893E-01 6.6941E-02 -2.2072E-02 5.0957E-03 -7.6668E-04 7.2967E-05 -4.2198E-06 1.3510E-07 -1.8346E-09

[0127] Table 10

[0128] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10D The magnification chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0129] Example 6

[0130] The following reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0131] like Fig.11 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0132] 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 negative 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 convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0133] In this example, the total effective focal length f of the optical imaging lens is 5.52 mm, the total length TTL of the optical imaging lens is 6.19 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.21°, and the aperture value Fno of the optical imaging lens is 1.88.

[0134] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 12 shows 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.

[0135]

[0136] Table 11

[0137]

[0138]

[0139] Table 12

[0140] Fig. 12A The axial chromatic aberration curve of the optical 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 optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12D The magnification chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 12A to FIG. 12DIt can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0141] Example 7

[0142] The following reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0143] like Fig.13 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0144] 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 negative 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 concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0145] In this example, the total effective focal length f of the optical imaging lens is 5.53 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.04°, and the aperture value Fno of the optical imaging lens is 1.88.

[0146] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 14 shows 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.

[0147]

[0148]

[0149] Table 13

[0150] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.4799E-03 7.0124E-03 -1.8079E-02 2.9129E-02 -2.9479E-02 1.8833E-02 -7.5123E-03 1.7238E-03 -1.8246E-04 S2 -2.1798E-02 2.3999E-02 -3.4018E-02 6.4768E-02 -8.8457E-02 7.3176E-02 -3.5854E-02 9.5938E-03 -1.0833E-03 S3 -5.5898E-02 5.1023E-02 -2.7650E-02 4.0710E-02 -6.8644E-02 6.8986E-02 -3.9187E-02 1.1981E-02 -1.5300E-03 S4 -2.6540E-02 3.4749E-02 2.8413E-02 -1.4831E-01 3.5908E-01 -5.1661E-01 4.3882E-01 -2.0158E-01 3.9079E-02 S5 -4.5811E-02 1.4076E-03 4.8552E-02 -2.7620E-01 6.4931E-01 -8.6518E-01 6.7223E-01 -2.8466E-01 5.1099E-02 S6 -6.9762E-02 7.0362E-02 -1.5680E-01 2.4850E-01 -2.7477E-01 1.9316E-01 -7.9811E-02 1.6818E-02 -1.2049E-03 S7 -8.3118E-02 4.5636E-03 1.2201E-01 -2.9656E-01 3.8845E-01 -3.0760E-01 1.4623E-01 -3.8513E-02 4.3028E-03 S8 -7.5800E-02 1.2947E-02 3.3285E-02 -4.9939E-02 4.0791E-02 -1.9023E-02 4.9627E-03 -6.7623E-04 3.7530E-05 S9 -2.6368E-02 -9.2452E-03 3.9313E-03 -2.3165E-03 9.7404E-04 -2.1471E-04 2.5611E-05 -1.5907E-06 4.0547E-08 S10 -2.6560E-02 1.0039E-02 -9.1836E-03 3.9547E-03 -1.0471E-03 1.8020E-04 -1.9347E-05 1.1602E-06 -2.9361E-08 S11 -1.7850E-01 6.3968E-02 -1.5893E-02 2.9123E-03 -3.8198E-04 3.4290E-05 -1.9867E-06 6.6669E-08 -9.8219E-10 S12 -1.6505E-01 6.4922E-02 -2.1323E-02 4.9200E-03 -7.4034E-04 7.0404E-05 -4.0622E-06 1.2952E-07 -1.7479E-09

[0151] Table 14

[0152] Fig.14A The axial chromatic aberration curve of the optical 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 optical imaging lens of Example 7 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.14D The magnification chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 14A to FIG. 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0153] Example 8

[0154] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Fig.15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0155] like Fig.15 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[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 negative 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 convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0157] In this example, the total effective focal length f of the optical imaging lens is 5.53 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.05°, and the aperture value Fno of the optical imaging lens is 1.88.

[0158] Table 15 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 16 shows 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 Example 1.

[0159]

[0160] Table 15

[0161]

[0162]

[0163] Table 16

[0164] Fig.16A The axial chromatic aberration curve of the optical 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 optical imaging lens of Example 8 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The magnification chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 16A to FIG. 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0165] Example 9

[0166] The following reference Figures 17 to 18D An optical imaging lens according to Embodiment 9 of the present application is described. Fig.17 A schematic structural diagram of an optical imaging lens according to Example 9 of the present application is shown.

[0167] like Fig.17 As shown, the optical imaging 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 sixth lens E6, a filter E7 and an imaging surface S15.

[0168] 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 negative 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 convex, 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 positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0169] In this example, the total effective focal length f of the optical imaging lens is 5.52 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 4.72 mm, half of the maximum field of view HFOV of the optical imaging lens is 40.16°, and the aperture value Fno of the optical imaging lens is 1.88.

[0170] Table 17 shows the basic parameters of the optical imaging lens of Example 9, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 18 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 9, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0171]

[0172]

[0173] Table 17

[0174] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.9647E-03 9.2367E-03 -2.6472E-02 4.6095E-02 -4.9734E-02 3.3492E-02 -1.3831E-02 3.2155E-03 -3.3026E-04 S2 -2.0080E-02 1.7840E-02 -1.3237E-02 1.6949E-02 -2.1777E-02 1.6972E-02 -7.7097E-03 1.8805E-03 -1.9168E-04 S3 -5.3457E-02 4.2246E-02 7.7523E-03 -5.2284E-02 7.6902E-02 -6.8843E-02 3.8462E-02 -1.2017E-02 1.6061E-03 S4 -3.1187E-02 6.8881E-02 -1.4458E-01 3.7709E-01 -6.2412E-01 6.2667E-01 -3.6787E-01 1.1492E-01 -1.4132E-02 S5 -4.7631E-02 2.8993E-02 -1.0185E-01 2.1411E-01 -3.3202E-01 3.4275E-01 -2.2220E-01 8.0798E-02 -1.2462E-02 S6 -5.7131E-02 5.0157E-02 -1.0112E-01 1.3793E-01 -1.3511E-01 8.3131E-02 -2.7718E-02 3.2445E-03 2.9885E-04 S7 -7.8491E-02 4.7672E-03 1.1277E-01 -2.6542E-01 3.3057E-01 -2.4758E-01 1.1112E-01 -2.7639E-02 2.9215E-03 S8 -7.7426E-02 1.7965E-02 2.5246E-02 -4.2974E-02 3.5667E-02 -1.6447E-02 4.2203E-03 -5.6627E-04 3.1064E-05 S9 -2.6942E-02 -7.3058E-03 3.0410E-03 -2.6990E-03 1.3324E-03 -3.1817E-04 4.0459E-05 -2.6731E-06 7.2628E-08 S10 -3.3905E-02 1.7976E-02 -1.3480E-02 5.3058E-03 -1.3130E-03 2.1400E-04 -2.2133E-05 1.3009E-06 -3.2720E-08 S11 -1.7948E-01 6.4763E-02 -1.6252E-02 2.9964E-03 -3.9230E-04 3.4910E-05 -1.9977E-06 6.6191E-08 -9.6495E-10 S12 -1.5835E-01 6.1466E-02 -1.9998E-02 4.5852E-03 -6.8949E-04 6.5925E-05 -3.8464E-06 1.2466E-07 -1.7182E-09

[0175] Table 18

[0176] Fig.18A The axial chromatic aberration curve of the optical imaging lens of Example 9 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig.18B The astigmatism curve of the optical imaging lens of Example 9 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 18C The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.18D The magnification chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 18A to 18DIt can be seen that the optical imaging lens provided in Example 9 can achieve good imaging quality.

[0177] In summary, Examples 1 to 9 respectively satisfy the relationships shown in Table 19.

[0178]

[0179]

[0180] Table 19

[0181] 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 optical imaging lens described above.

[0182] 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. Optical imaging lens, It is 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; The second lens has a negative optical power, and its object side surface is convex and its image side surface is concave; a third lens having optical power; a fourth lens having optical power; a fifth lens element having positive refractive power, whose object-side surface is convex and whose image-side surface is concave; and a sixth lens having negative optical power, whose object side surface is convex and whose image side surface is concave; At least one of the third lens and the fourth lens has positive refractive power; The number of lenses having optical power in the optical imaging lens is six; The combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens satisfy the following: 1.0<f12 / f≤1.2; The spacing distance T12 between the first lens and the second lens on the optical axis and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy: 0.3<T12 / T23<0.5; The total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: -1.83≤f6 / f<-1.

60.

2. The optical imaging lens according to claim 1, It is characterized in that The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 1.88≤f / EPD<2.

3. The optical imaging lens according to claim 1, It is characterized in that The total effective focal length f of the optical imaging lens and half of the maximum field of view HFOV of the optical imaging lens satisfy: 4.67mm≥tan(HFOV)×f>4.58mm.

4. The optical imaging lens according to claim 1, It is characterized in that The maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens satisfy: 0.8<DT31 / DT21<0.

9.

5. The optical imaging lens according to claim 1, It is characterized in that The effective focal length f1 of the first lens and the curvature radius R1 of the object-side surface of the first lens satisfy: 0.4<R1 / f1<0.

5.

6. The optical imaging lens according to claim 1, It is characterized in that The distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis and the 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 satisfy: 0.5<SAG51 / SAG52≤0.

63.

7. The optical imaging lens according to claim 1, It is characterized in that The total effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens satisfy: 0.1<f / f5<0.

3.

8. The optical imaging lens according to claim 1, It is characterized in that The effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens satisfy: -1.1<f2 / (R3+R4)<-0.

8.

9. The optical imaging lens according to claim 1, It is characterized in that A curvature radius R11 of the object side surface of the sixth lens, a curvature radius R12 of the image side surface of the sixth lens, and a distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 1.0<TTL / (R11+R12)<1.

1.

10. The optical imaging lens according to claim 1, It is characterized in that A curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens satisfy: 0.09≤(R10-R9) / (R10+R9)≤0.

13.

11. The optical imaging lens according to claim 1, It is characterized in that The center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens satisfy: 0.8<CT4 / CT3<1.

1.

12. The optical imaging lens according to claim 1, It is characterized in that The center thickness CT1 of the first lens, the center thickness CT5 of the fifth lens, the center thickness CT6 of the sixth lens, and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 0.3<(CT1+CT5+CT6) / TTL≤0.36.

Images