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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens with optical power; the third lens has positive optical power, and its image side surface is a convex surface; the object side surface of the fourth lens is a concave surface; the maximum half field of view Semi-FOV of the optical imaging lens satisfies: Semi-FOV>45°; and the total effective focal length f of the optical imaging lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: 0.4<f / R3-f / R4<1.4.

Description

Technical Field

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

[0002] With the development and popularization of portable electronic devices such as smartphones, users have higher and higher requirements for high-definition imaging lenses used in portable electronic devices such as smartphones. Especially in terms of photo function, users have an increasing demand for high-definition imaging lenses with large imaging surface, miniaturization, and wide shooting range. At the same time, the market has also put forward higher requirements for the imaging quality of imaging lenses.

[0003] How to ensure that more light enters the lens and meet the camera length requirements of portable electronic devices such as smartphones, while at the same time making the lens have less distortion so as to ensure small imaging distortion while meeting the requirements of wide field of view, is one of the problems that many lens designers are currently facing. 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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens with optical power; the third lens has positive optical power, and its image side surface is a convex surface; the object side surface of the fourth lens is a concave surface; the maximum half field of view Semi-FOV of the optical imaging lens can satisfy: Semi-FOV>45°; and the total effective focal length f of the optical imaging 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 can satisfy: 0.4<f / R3-f / R4<1.4.

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

[0006] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f3 of the third lens may satisfy: 0.4<f / f3<1.2.

[0007] In one embodiment, the effective focal length f7 of the seventh lens and the effective focal length f8 of the eighth lens may satisfy: -1.5<f7 / f8<-0.7.

[0008] In one embodiment, a curvature radius R6 of the image-side surface of the third lens and a curvature radius R5 of the object-side surface of the third lens may satisfy: -0.8<R6 / R5<-0.2.

[0009] In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens element and the total effective focal length f of the optical imaging lens may satisfy: -1.85<R7 / f<0.

[0010] 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<1.8.

[0011] In one embodiment, 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 and the combined focal length f12 of the first lens and the second lens may satisfy: 0.5<TTL / f12<1.1.

[0012] In one embodiment, the Abbe number V6 of the sixth lens may satisfy: 15<V6<30.

[0013] In one embodiment, a center thickness CT4 of the fourth lens on the optical axis, a spacing distance T34 between the third lens and the fourth lens on the optical axis, and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 0.2<CT4 / (T34+T45)<1.4.

[0014] In one embodiment, a center thickness CT5 of the fifth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.3<CT5 / CT6<1.2.

[0015] In one implementation, a center thickness CT8 of the eighth lens on the optical axis and an edge thickness ET8 of the eighth lens may satisfy: 0.2<CT8 / ET8<1.0.

[0016] In one embodiment, a distance T67 between the sixth lens and the seventh lens on the optical axis, a distance T78 between the seventh lens and the eighth lens on the optical axis, and a sum ∑AT of distances between any two adjacent lenses from the first lens to the eighth lens on the optical axis may satisfy: 0.2<(T67+T78) / ∑AT<0.8.

[0017] In one embodiment, an effective half-aperture DT31 of the object-side surface of the third lens and an effective half-aperture DT61 of the object-side surface of the sixth lens may satisfy: 0.3<DT31 / DT61<1.0.

[0018] In one embodiment, a distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis and a distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis may satisfy: |SAG72 / SAG71|<1.0.

[0019] On the other 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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens with optical power; the third lens has positive optical power, and its image side surface is convex; the object side surface of the fourth lens is concave; the object side surface of the fourth lens is concave; the maximum half field of view Semi-FOV of the optical imaging lens can satisfy: Semi-FOV>45°; 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 and the combined focal length f12 of the first lens and the second lens can satisfy: 0.5<TTL / f12<1.1.

[0020] The present application provides an optical imaging lens applicable to portable electronic products, having at least one of a large field of view, a large image surface, 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] 4A to 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. 8DThe 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;

[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;

[0040] Fig.19 A schematic structural diagram of an optical imaging lens according to Embodiment 10 of the present application is shown; and

[0041] FIG. 20A to FIG. 20D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 10 are respectively shown. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] The features, principles and other aspects of the present application are described in detail below.

[0050] The optical imaging lens according to the exemplary embodiment of the present application may include eight lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens. The eight 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 eighth lens may have a spacing distance between them.

[0051] In an exemplary embodiment, the first lens has positive or negative optical power; the second lens has positive or negative optical power; the third lens may have positive optical power, and its image side surface may be convex; the fourth lens has positive or negative optical power, and its object side surface may be concave; the fifth lens has positive or negative optical power; the sixth lens has positive or negative optical power; the seventh lens has positive or negative optical power; and the eighth lens has positive or negative optical power.

[0052] The combination of the third lens with positive refractive power and other lenses with refractive power is conducive to offsetting aberrations and controlling the total aberration of the lens within a very small range. The third lens with a convex image side surface and the fourth lens with a concave object side surface are conducive to correcting aberrations such as astigmatism, distortion and spherical aberration.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: Semi-FOV>45°, where Semi-FOV is the maximum half field of view angle of the optical imaging lens. More specifically, Semi-FOV may further satisfy: Semi-FOV>49.9°. Meeting Semi-FOV>45° is conducive to making the lens have a larger field of view and accommodate more scenes while maintaining a large image surface. A larger field of view angle is conducive to reducing the total effective focal length of the optical imaging lens, making the depth of field of the captured scene larger and the imaging clarity of near and far objects better.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -1.85<R7 / f<0, where R7 is the radius of curvature of the object side of the fourth lens, and f is the total effective focal length of the optical imaging lens. More specifically, R7 and f may further satisfy: -1.7<R7 / f<-0.9. Satisfying -1.85<R7 / f<0 is conducive to making the mirror surface smoother.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.4<f / f3<1.2, where f is the total effective focal length of the optical imaging lens, and f3 is the effective focal length of the third lens. More specifically, f and f3 may further satisfy: 0.7<f / f3<0.9. Satisfying 0.4<f / f3<1.2 is beneficial to the convergence and refraction of light by the third lens.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -1.5<f7 / f8<-0.7, wherein f7 is the effective focal length of the seventh lens, and f8 is the effective focal length of the eighth lens. More specifically, f7 and f8 may further satisfy: -1.3<f7 / f8<-0.9. Satisfying -1.5<f7 / f8<-0.7 is conducive to eliminating some aberrations.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.8<R6 / R5<-0.2, where R6 is the radius of curvature of the image side surface of the third lens, and R5 is the radius of curvature of the object side surface of the third lens. More specifically, R6 and R5 may further satisfy: -0.6<R6 / R5<-0.4. Satisfying -0.8<R6 / R5<-0.2 is conducive to making the third lens smoother and reducing spherical aberration and coma.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.4<f / R3-f / R4<1.4, wherein f is the total effective focal length of the optical imaging 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, f, R3, and R4 may further satisfy: 0.6<f / R3-f / R4<1.2. Satisfying 0.4<f / R3-f / R4<1.4 is conducive to the second lens assuming part of the positive focal power of the lens, and is conducive to the second lens cooperating with the third lens to achieve compensation for the spherical aberration of the lens.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f / EPD<1.8, 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<1.8 is conducive to ensuring that the amount of light entering the lens is more sufficient.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5<TTL / f12<1.1, wherein 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, and f12 is the combined focal length of the first lens and the second lens. More specifically, TTL and f12 may further satisfy: 0.6<TTL / f12<0.9. Satisfying 0.5<TTL / f12<1.1 is conducive to the reasonable allocation of the optical power of the optical imaging lens, avoiding excessive concentration of the lens optical power, and thus helping to reduce aberrations.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 15<V6<30, where V6 is the Abbe number of the sixth lens. More specifically, V6 may further satisfy: 19<V6<27. Satisfying 15<V6<30 is conducive to making the sixth lens have a smaller thickness and is conducive to correcting aberrations.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2<CT4 / (T34+T45)<1.4, wherein CT4 is the center thickness of the fourth lens on the optical axis, T34 is the spacing distance between the third lens and the fourth lens on the optical axis, and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. More specifically, CT4, T34, and T45 may further satisfy: 0.5<CT4 / (T34+T45)<1.2. Satisfying 0.2<CT4 / (T34+T45)<1.4 is conducive to making the local space more compact and facilitating the assembly of the fourth lens.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3<CT5 / CT6<1.2, wherein CT5 is the center thickness of the fifth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. More specifically, CT5 and CT6 may further satisfy: 0.6<CT5 / CT6<1.0. Satisfying 0.3<CT5 / CT6<1.2 is conducive to making the spatial allocation of the lenses more reasonable.

[0064] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2<CT8 / ET8<1.0, wherein CT8 is the center thickness of the eighth lens on the optical axis, and ET8 is the edge thickness of the eighth lens. More specifically, CT8 and ET8 may further satisfy: 0.5<CT8 / ET8<0.9. Satisfying 0.2<CT8 / ET8<1.0 is conducive to the molding and manufacturing of the eighth lens as a large lens, and is conducive to strengthening the structural strength at the lens assembly position.

[0065] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2<(T67+T78) / ∑AT<0.8, wherein T67 is the spacing distance between the sixth lens and the seventh lens on the optical axis, T78 is the spacing distance between the seventh lens and the eighth lens on the optical axis, and ∑AT is the sum of the spacing distances between any two adjacent lenses from the first lens to the eighth lens on the optical axis. More specifically, T67, T78 and ∑AT may further satisfy: 0.4<(T67+T78) / ∑AT<0.6. Satisfying 0.2<(T67+T78) / ∑AT<0.8 is conducive to making the lens arrangement more compact to shorten the total optical length of the lens.

[0066] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3<DT31 / DT61<1.0, wherein DT31 is the effective semi-aperture of the object side of the third lens, and DT61 is the effective semi-aperture of the object side of the sixth lens. More specifically, DT31 and DT61 may further satisfy: 0.6<DT31 / DT61<0.8. Satisfying 0.3<DT31 / DT61<1.0 is conducive to reducing the step difference of the effective semi-aperture between the lenses, and facilitates a more reasonable force distribution of the lenses after assembly.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: |SAG72 / SAG71|<1.0, wherein SAG72 is the distance from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis, and SAG71 is the distance from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis. More specifically, SAG72 and SAG71 may further satisfy: |SAG72 / SAG71|<0.8. Satisfying |SAG72 / SAG71|<1.0 is beneficial to the processing and molding of the lens, and is beneficial to reducing the influence of the lens on the surface shape after being subjected to force during the assembly process.

[0068] In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture arranged between the second lens and the third lens. Optionally, the above-mentioned optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes an optical imaging lens with the characteristics of miniaturization, large image surface, small distortion, large field of view, high imaging quality, etc. The optical imaging lens according to the above-mentioned embodiment of the present application may adopt multiple lenses, such as the eight 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, so that the optical imaging lens is more conducive to production and processing.

[0069] 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 eighth 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 that occurs 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, the sixth lens, the seventh lens and the eighth 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, the sixth lens, the seventh lens and the eighth lens are all aspherical mirror surfaces.

[0070] 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 eight lenses are described as an example in the embodiments, the optical imaging lens is not limited to including eight lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0071] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0072] Example 1

[0073] 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.

[0074] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0075] The first lens E1 has positive focal power, and its object side surface S1 is concave, and its image side surface S2 is convex. 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 convex, 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 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 sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0076] 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).

[0077]

[0078]

[0079] Table 1

[0080] In this example, the total effective focal length f of the optical imaging lens is 4.09 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 S19 of the optical imaging lens on the optical axis) is 6.10 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 50.0°, and the aperture value Fno of the optical imaging lens is 1.70.

[0081] In Example 1, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 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:

[0082]

[0083] 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, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0084] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.7002E-03 1.5696E-02 -1.3468E-02 1.0583E-02 -6.5700E-03 2.7601E-03 -7.2370E-04 1.0632E-04 -6.6796E-06 S2 1.0366E-01 -1.7642E-01 3.6825E-01 -5.0206E-01 4.5264E-01 -2.6573E-01 9.7438E-02 -2.0192E-02 1.7949E-03 S3 6.9705E-02 4.0023E-02 -1.3865E+00 7.6337E+00 -2.4080E+01 5.0424E+01 -7.3947E+01 7.7679E+01 -5.8765E+01 S4 3.4070E-02 -7.9399E-01 7.5547E+00 -4.5579E+01 1.8056E+02 -4.9082E+02 9.4230E+02 -1.2975E+03 1.2857E+03 S5 -3.6466E-02 -2.1562E-02 8.5698E-02 -2.0811E-01 2.9950E-01 -2.5536E-01 1.2849E-01 -3.5493E-02 4.2237E-03 S6 -3.7023E-02 -7.8109E-01 5.9237E+00 -2.5031E+01 7.1462E+01 -1.4603E+02 2.1835E+02 -2.4038E+02 1.9410E+02 S7 -3.4765E-02 -4.2271E-01 3.0403E+00 -1.1153E+01 2.6375E+01 -4.3368E+01 5.1012E+01 -4.3142E+01 2.5916E+01 S8 2.3020E-02 -9.4497E-02 3.9888E-01 -1.1144E+00 2.1434E+00 -3.1030E+00 3.5176E+00 -3.1251E+00 2.1319E+00 S9 -3.9888E-02 -1.1844E-01 2.6203E-01 -3.1578E-01 2.4443E-01 -1.2753E-01 4.4196E-02 -9.2336E-03 8.7307E-04 S10 -2.1087E-02 -1.4484E-01 2.2988E-01 -2.3455E-01 1.6283E-01 -8.0431E-02 2.7427E-02 -5.6936E-03 5.3171E-04 S11 2.3716E-02 -1.2620E-02 -4.7603E-03 8.9718E-03 -3.8617E-03 -2.1084E-03 2.1769E-03 -6.3479E-04 6.3925E-05 S12 -1.8557E-01 2.1399E-01 -1.8944E-01 1.3512E-01 -6.9176E-02 2.2973E-02 -4.6373E-03 5.1677E-04 -2.4441E-05 S13 -9.6505E-02 9.3639E-02 -1.0163E-01 6.4985E-02 -2.7038E-02 7.1639E-03 -1.1491E-03 1.0201E-04 -3.8753E-06 S14 1.1477E-01 -1.1078E-01 4.9558E-02 -1.5045E-02 3.1605E-03 -4.3862E-04 3.7785E-05 -1.8200E-06 3.7413E-08 S15 -1.3603E-01 4.3698E-02 -4.8922E-03 -1.5412E-04 1.0279E-04 -1.2182E-05 7.1770E-07 -2.1832E-08 2.7374E-10 S16 -1.4970E-01 5.6736E-02 -1.5576E-02 2.8993E-03 -3.5475E-04 2.7848E-05 -1.3435E-06 3.6170E-08 -4.1542E-10

[0085] Table 2

[0086] 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.

[0087] Example 2

[0088] 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.

[0089] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0090] The first lens E1 has positive focal power, and its object side surface S1 is concave, and its image side surface S2 is convex. 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 convex, 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 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 sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is convex, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0091] In this example, the total effective focal length f of the optical imaging lens is 4.09 mm, the total length TTL of the optical imaging lens is 6.10 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 50.0°, and the aperture value Fno of the optical imaging lens is 1.70.

[0092] 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.

[0093]

[0094]

[0095] Table 3

[0096] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.1621E-03 1.7914E-02 -1.3678E-02 1.0186E-02 -6.6589E-03 3.0154E-03 -8.4325E-04 1.3016E-04 -8.4635E-06 S2 9.0533E-02 -1.3435E-01 2.9933E-01 -4.2893E-01 4.0205E-01 -2.4406E-01 9.2251E-02 -1.9691E-02 1.8076E-03 S3 5.4521E-02 1.3198E-01 -1.9956E+00 1.0868E+01 -3.5584E+01 7.7972E+01 -1.1967E+02 1.3132E+02 -1.0359E+02 S4 2.4842E-02 -6.7676E-01 6.0758E+00 -3.4593E+01 1.2958E+02 -3.3357E+02 6.0715E+02 -7.9345E+02 7.4699E+02 S5 -3.9610E-02 -2.5542E-02 1.1865E-01 -2.9979E-01 4.5062E-01 -4.0652E-01 2.1689E-01 -6.3121E-02 7.7714E-03 S6 -7.2708E-02 -3.1419E-01 2.6323E+00 -1.0162E+01 2.5802E+01 -4.7638E+01 6.6514E+01 -7.0772E+01 5.6764E+01 S7 -5.2701E-02 -1.9148E-01 1.8491E+00 -7.5502E+00 1.9956E+01 -3.8503E+01 5.6518E+01 -6.3371E+01 5.3492E+01 S8 2.8389E-02 -1.9256E-01 1.2109E+00 -4.7125E+00 1.2212E+01 -2.2319E+01 2.9505E+01 -2.8474E+01 2.0031E+01 S9 -5.2084E-02 -1.0652E-01 2.7030E-01 -3.5507E-01 2.9608E-01 -1.6170E-01 5.6106E-02 -1.1235E-02 9.8836E-04 S10 -1.3141E-02 -1.8437E-01 3.2267E-01 -3.6272E-01 2.7100E-01 -1.3600E-01 4.4365E-02 -8.5102E-03 7.2831E-04 S11 3.9747E-02 -6.2250E-02 8.6347E-02 -9.5373E-02 6.9827E-02 -3.4615E-02 1.0988E-02 -1.9873E-03 1.5444E-04 S12 -1.8048E-01 1.9375E-01 -1.5350E-01 1.0064E-01 -5.0185E-02 1.6665E-02 -3.3780E-03 3.7625E-04 -1.7637E-05 S13 -8.8384E-02 7.5232E-02 -7.5579E-02 4.2792E-02 -1.5267E-02 3.4042E-03 -4.4977E-04 3.2029E-05 -9.4985E-07 S14 1.2318E-01 -1.1388E-01 4.8945E-02 -1.3830E-02 2.6792E-03 -3.4668E-04 2.8329E-05 -1.3148E-06 2.6362E-08 S15 -1.1679E-01 3.0008E-02 -6.7567E-04 -9.1608E-04 1.9047E-04 -1.8681E-05 1.0167E-06 -2.9536E-08 3.5761E-10 S16 -1.3726E-01 4.8376E-02 -1.2604E-02 2.2578E-03 -2.6885E-04 2.0741E-05 -9.9123E-07 2.6600E-08 -3.0609E-10

[0097] Table 4

[0098] 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 4DThe 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. 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0099] Example 3

[0100] 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.

[0101] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0102] The first lens E1 has positive focal power, and its object side surface S1 is concave, and its image side surface S2 is convex. 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 convex, 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 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 sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is convex, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0103] In this example, the total effective focal length f of the optical imaging lens is 4.09 mm, the total length TTL of the optical imaging lens is 6.10 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 50.0°, and the aperture value Fno of the optical imaging lens is 1.70.

[0104] 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.

[0105]

[0106] Table 5

[0107] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.7616E-04 1.8321E-02 -1.3443E-02 9.3327E-03 -5.8139E-03 2.5794E-03 -7.1727E-04 1.1084E-04 -7.2391E-06 S2 8.8998E-02 -1.2684E-01 2.7760E-01 -3.9139E-01 3.6127E-01 -2.1608E-01 8.0536E-02 -1.6970E-02 1.5398E-03 S3 5.2369E-02 1.5945E-01 -2.1862E+00 1.1733E+01 -3.8259E+01 8.3762E+01 -1.2860E+02 1.4126E+02 -1.1157E+02 S4 2.1252E-02 -6.0361E-01 5.3627E+00 -3.0362E+01 1.1312E+02 -2.8963E+02 5.2437E+02 -6.8172E+02 6.3858E+02 S5 -3.8852E-02 -2.7186E-02 1.1931E-01 -2.9584E-01 4.4094E-01 -3.9614E-01 2.1104E-01 -6.1424E-02 7.5690E-03 S6 -7.5251E-02 -2.7542E-01 2.4466E+00 -9.7708E+00 2.5628E+01 -4.8786E+01 6.9988E+01 -7.6196E+01 6.2279E+01 S7 -5.7557E-02 -1.2149E-01 1.4175E+00 -5.9304E+00 1.5703E+01 -3.0223E+01 4.4404E+01 -5.0114E+01 4.2768E+01 S8 2.6838E-02 -1.8249E-01 1.1868E+00 -4.7356E+00 1.2480E+01 -2.3070E+01 3.0743E+01 -2.9849E+01 2.1102E+01 S9 -6.2274E-02 -6.2300E-02 1.7726E-01 -2.3761E-01 1.9625E-01 -1.0407E-01 3.4724E-02 -6.6926E-03 5.7149E-04 S10 -2.6417E-02 -1.3961E-01 2.5076E-01 -2.8611E-01 2.1381E-01 -1.0751E-01 3.5619E-02 -7.0441E-03 6.2764E-04 S11 4.7272E-02 -7.9749E-02 1.1114E-01 -1.1470E-01 7.8601E-02 -3.7326E-02 1.1722E-02 -2.1505E-03 1.7181E-04 S12 -1.6099E-01 1.5601E-01 -1.2122E-01 8.6525E-02 -4.7816E-02 1.7198E-02 -3.7086E-03 4.3556E-04 -2.1470E-05 S13 -8.3573E-02 6.3487E-02 -6.3269E-02 3.5594E-02 -1.2527E-02 2.7075E-03 -3.3727E-04 2.1748E-05 -5.4865E-07 S14 1.2243E-01 -1.1194E-01 4.8554E-02 -1.3889E-02 2.7144E-03 -3.5273E-04 2.8856E-05 -1.3384E-06 2.6793E-08 S15 -1.1775E-01 3.0153E-02 -6.0215E-04 -9.5298E-04 1.9798E-04 -1.9527E-05 1.0717E-06 -3.1461E-08 3.8567E-10 S16 -1.3633E-01 4.7544E-02 -1.2263E-02 2.1810E-03 -2.5805E-04 1.9778E-05 -9.3894E-07 2.5033E-08 -2.8629E-10

[0108] Table 6

[0109] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of light of different wavelengths 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.

[0110] Example 4

[0111] 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.

[0112] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0113] The first lens E1 has positive focal power, and its object side surface S1 is concave, and its image side surface S2 is convex. 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 convex, 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 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 sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0114] In this example, the total effective focal length f of the optical imaging lens is 4.09 mm, the total length TTL of the optical imaging lens is 6.10 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 50.0°, and the aperture value Fno of the optical imaging lens is 1.70.

[0115] 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.

[0116]

[0117] Table 7

[0118]

[0119]

[0120] Table 8

[0121] 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.8DThe 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.

[0122] Example 5

[0123] 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.

[0124] like Fig. 9 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0125] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 convex, 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 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 sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0126] In this example, the total effective focal length f of the optical imaging lens is 4.09 mm, the total length TTL of the optical imaging lens is 6.03 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 50.0°, and the aperture value Fno of the optical imaging lens is 1.70.

[0127] 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.

[0128]

[0129]

[0130] Table 9

[0131] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.3432E-04 1.0810E-02 -1.5619E-03 -2.6245E-03 2.5329E-03 -1.2127E-03 3.4071E-04 -5.3760E-05 3.6793E-06 S2 7.9565E-02 -1.0270E-01 2.2897E-01 -3.3128E-01 3.2211E-01 -2.0663E-01 8.3866E-02 -1.9482E-02 1.9634E-03 S3 4.2063E-02 2.3629E-01 -2.5221E+00 1.3257E+01 -4.4681E+01 1.0373E+02 -1.7147E+02 2.0489E+02 -1.7741E+02 S4 1.0953E-02 -2.0958E-01 1.4471E+00 -8.0775E+00 3.1724E+01 -8.8256E+01 1.7648E+02 -2.5579E+02 2.6867E+02 S5 -3.6849E-02 -1.7689E-02 5.3344E-02 -1.3709E-01 2.1017E-01 -1.8622E-01 9.4879E-02 -2.5422E-02 2.7715E-03 S6 -6.2086E-02 -4.9541E-01 3.8537E+00 -1.4431E+01 3.2680E+01 -4.4840E+01 2.9701E+01 1.1751E+01 -4.7391E+01 S7 -6.5667E-02 -8.4731E-02 7.6458E-01 -3.3000E-01 -1.0656E+01 4.8261E+01 -1.1335E+02 1.7086E+02 -1.7571E+02 S8 1.0977E-02 -4.4877E-02 4.6083E-01 -2.1787E+00 6.3241E+00 -1.2636E+01 1.8049E+01 -1.8667E+01 1.3978E+01 S9 -8.3182E-02 1.3281E-02 2.2093E-03 3.0963E-02 -7.6320E-02 7.6777E-02 -4.1106E-02 1.1623E-02 -1.3697E-03 S10 -4.9241E-02 -6.8399E-02 1.1087E-01 -1.0988E-01 6.7311E-02 -2.7713E-02 8.1031E-03 -1.5941E-03 1.5899E-04 S11 4.7012E-02 -5.8174E-02 6.3669E-02 -6.1022E-02 4.0838E-02 -2.0447E-02 7.0846E-03 -1.4411E-03 1.2605E-04 S12 -1.5028E-01 1.3581E-01 -9.8889E-02 6.9707E-02 -4.0011E-02 1.5131E-02 -3.4106E-03 4.1467E-04 -2.0980E-05 S13 -8.1111E-02 5.7794E-02 -5.9465E-02 3.6074E-02 -1.4373E-02 3.6287E-03 -5.4396E-04 4.4063E-05 -1.4913E-06 S14 1.1902E-01 -1.1146E-01 5.0465E-02 -1.5636E-02 3.3493E-03 -4.7332E-04 4.1562E-05 -2.0470E-06 4.3258E-08 S15 -1.0637E-01 1.6827E-02 5.5243E-03 -2.4072E-03 4.0320E-04 -3.7456E-05 2.0250E-06 -5.9776E-08 7.4657E-10 S16 -1.2268E-01 4.1410E-02 -1.0721E-02 1.9629E-03 -2.4042E-04 1.8944E-05 -9.1412E-07 2.4481E-08 -2.7828E-10

[0132] Table 10

[0133] 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.

[0134] Example 6

[0135] 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.

[0136] like Fig.11 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0137] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 convex, 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 negative 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 concave, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0138] In this example, the total effective focal length f of the optical imaging lens is 4.09 mm, the total length TTL of the optical imaging lens is 6.04 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 49.9°, and the aperture value Fno of the optical imaging lens is 1.70.

[0139] 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.

[0140]

[0141] Table 11

[0142] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.5714E-03 1.1491E-02 -5.6617E-03 3.2319E-03 -2.3806E-03 1.2913E-03 -4.2368E-04 7.4877E-05 -5.4840E-06 S2 8.2294E-02 -1.1056E-01 2.5420E-01 -3.7425E-01 3.6830E-01 -2.3895E-01 9.8205E-02 -2.3163E-02 2.3776E-03 S3 4.8187E-02 1.7410E-01 -2.1403E+00 1.1646E+01 -3.9856E+01 9.3307E+01 -1.5508E+02 1.8611E+02 -1.6180E+02 S4 5.2163E-03 -2.1185E-01 1.6168E+00 -9.4659E+00 3.8377E+01 -1.0949E+02 2.2392E+02 -3.3164E+02 3.5592E+02 S5 -3.9796E-02 -4.9017E-04 -1.3388E-02 3.2002E-02 -4.8271E-02 5.3524E-02 -3.9717E-02 1.6817E-02 -2.9226E-03 S6 -1.0026E-01 -1.2650E-01 2.4954E+00 -1.3260E+01 4.2062E+01 -8.9792E+01 1.3454E+02 -1.4375E+02 1.0946E+02 S7 -9.0481E-02 1.8025E-01 -9.4912E-02 -5.9555E-01 7.6345E-01 3.9995E+00 -1.7498E+01 3.4397E+01 -4.1641E+01 S8 3.0323E-02 -1.5381E-01 1.1595E+00 -5.3745E+00 1.6045E+01 -3.2997E+01 4.8323E+01 -5.1172E+01 3.9284E+01 S9 -7.5590E-02 -3.4201E-05 -6.9167E-03 5.7470E-02 -9.1031E-02 7.4237E-02 -3.5648E-02 9.6461E-03 -1.1305E-03 S10 -4.4393E-02 -6.4886E-02 8.5204E-02 -7.9455E-02 5.0329E-02 -2.2340E-02 6.9885E-03 -1.4134E-03 1.4079E-04 S11 4.4042E-02 -5.1735E-02 7.6375E-02 -1.0201E-01 8.5196E-02 -4.6217E-02 1.5729E-02 -3.0298E-03 2.5062E-04 S12 -1.6321E-01 1.4201E-01 -8.4896E-02 4.6842E-02 -2.4799E-02 9.4186E-03 -2.1575E-03 2.6631E-04 -1.3747E-05 S13 -8.4706E-02 6.1013E-02 -5.9201E-02 3.5392E-02 -1.4034E-02 3.4876E-03 -5.0583E-04 3.8862E-05 -1.2189E-06 S14 1.2449E-01 -1.2048E-01 5.8236E-02 -1.9419E-02 4.4279E-03 -6.5823E-04 6.0415E-05 -3.1028E-06 6.8289E-08 S15 -1.0792E-01 1.7069E-02 5.8262E-03 -2.5265E-03 4.2415E-04 -3.9561E-05 2.1482E-06 -6.3605E-08 7.9339E-10 S16 -1.2272E-01 4.0333E-02 -9.9100E-03 1.7307E-03 -2.0504E-04 1.5849E-05 -7.5922E-07 2.0388E-08 -2.3438E-10

[0143] Table 12

[0144] 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. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0145] Example 7

[0146] 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.

[0147] like Fig.13 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0148] The first lens E1 has negative focal power, and its object side surface S1 is concave, 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 convex, 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 negative 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 seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is convex, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0149] In this example, the total effective focal length f of the optical imaging lens is 3.93 mm, the total length TTL of the optical imaging lens is 6.09 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 51.2°, and the aperture value Fno of the optical imaging lens is 1.70.

[0150] 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.

[0151]

[0152] Table 13

[0153]

[0154]

[0155] Table 14

[0156] 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.

[0157] Example 8

[0158] 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.

[0159] like Fig.15 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0160] The first lens E1 has negative focal power, and its object side surface S1 is concave, 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 convex, 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 negative 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 concave, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0161] In this example, the total effective focal length f of the optical imaging lens is 3.92 mm, the total length TTL of the optical imaging lens is 6.10 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 51.2°, and the aperture value Fno of the optical imaging lens is 1.70.

[0162] 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.

[0163]

[0164]

[0165] Table 15

[0166] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.7855E-02 4.3343E-04 7.3242E-04 -1.4638E-03 8.1029E-04 -2.2455E-04 2.9490E-05 -9.5244E-07 -9.1063E-08 S2 2.4118E-02 8.6429E-02 -1.6257E-01 2.0932E-01 -1.7304E-01 8.8693E-02 -2.5520E-02 3.2116E-03 -3.7769E-05 S3 4.7921E-03 2.0306E-01 -1.1500E+00 5.1219E+00 -1.6700E+01 3.8534E+01 -6.2925E+01 7.3031E+01 -6.0138E+01 S4 1.1638E-02 -3.3532E-01 3.0971E+00 -2.0523E+01 9.1493E+01 -2.8204E+02 6.1606E+02 -9.6679E+02 1.0932E+03 S5 -4.0475E-02 -1.3772E-02 3.8997E-02 -1.4005E-01 2.8043E-01 -3.2066E-01 2.1083E-01 -7.3922E-02 1.0756E-02 S6 -1.3956E-01 5.8299E-01 -4.0655E+00 2.1789E+01 -7.9450E+01 2.0104E+02 -3.6192E+02 4.7018E+02 -4.4205E+02 S7 -1.3453E-01 8.4432E-01 -6.0372E+00 3.0520E+01 -1.0542E+02 2.5509E+02 -4.4246E+02 5.5706E+02 -5.0990E+02 S8 1.6526E-02 -5.5914E-02 4.5638E-01 -2.3435E+00 7.4531E+00 -1.6006E+01 2.4081E+01 -2.5812E+01 1.9781E+01 S9 -9.6762E-02 9.6884E-02 -2.0744E-01 3.1586E-01 -3.0952E-01 1.9154E-01 -7.4142E-02 1.6872E-02 -1.7560E-03 S10 -1.1802E-01 7.2404E-02 -7.6283E-02 -1.7327E-02 1.0914E-01 -1.0412E-01 4.7807E-02 -1.0964E-02 1.0024E-03 S11 4.2127E-02 -1.5758E-02 4.9704E-02 -1.1985E-01 1.1644E-01 -6.2539E-02 1.9530E-02 -3.3300E-03 2.4047E-04 S12 -1.5273E-01 1.4619E-01 -7.7148E-03 -8.3155E-02 6.8060E-02 -2.7074E-02 6.0661E-03 -7.3246E-04 3.7124E-05 S13 -1.1614E-01 1.1012E-01 -1.0976E-01 7.4482E-02 -3.3204E-02 9.3314E-03 -1.5875E-03 1.4952E-04 -5.9807E-06 S14 1.6753E-01 -1.9331E-01 1.1397E-01 -4.3146E-02 1.0602E-02 -1.6582E-03 1.5823E-04 -8.3760E-06 1.8834E-07 S15 -1.0369E-01 -5.3144E-03 2.1339E-02 -7.2752E-03 1.2233E-03 -1.1931E-04 6.8791E-06 -2.1843E-07 2.9534E-09 S16 -1.4019E-01 4.4058E-02 -1.0056E-02 1.6911E-03 -2.0211E-04 1.6216E-05 -8.1648E-07 2.3147E-08 -2.8123E-10

[0167] Table 16

[0168] 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.16DThe 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.

[0169] Example 9

[0170] The following reference Figures 17 to 18D An optical imaging lens according to Example 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.

[0171] like Fig.17 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0172] The first lens E1 has negative focal power, and its object side surface S1 is concave, 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 convex, 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 negative 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 seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0173] In this example, the total effective focal length f of the optical imaging lens is 3.92 mm, the total length TTL of the optical imaging lens is 6.10 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 51.2°, and the aperture value Fno of the optical imaging lens is 1.70.

[0174] 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.

[0175]

[0176]

[0177] Table 17

[0178] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.7263E-02 2.8263E-04 1.6131E-03 -2.5244E-03 1.5299E-03 -5.2142E-04 1.0223E-04 -1.0607E-05 4.4226E-07 S2 2.4470E-02 8.9935E-02 -1.8148E-01 2.5152E-01 -2.2736E-01 1.3145E-01 -4.5715E-02 8.4041E-03 -5.8621E-04 S3 5.0284E-03 2.0369E-01 -1.1306E+00 4.9172E+00 -1.5817E+01 3.6343E+01 -5.9531E+01 6.9761E+01 -5.8403E+01 S4 1.0447E-02 -3.4696E-01 3.2787E+00 -2.1767E+01 9.6815E+01 -2.9749E+02 6.4753E+02 -1.0126E+03 1.1408E+03 S5 -4.1728E-02 1.1204E-02 -7.9666E-02 1.9458E-01 -2.9412E-01 2.8717E-01 -1.7555E-01 6.1000E-02 -9.0925E-03 S6 -1.2564E-01 2.2835E-01 -1.1138E+00 7.9954E+00 -3.7517E+01 1.1260E+02 -2.2841E+02 3.2405E+02 -3.2611E+02 S7 -1.1486E-01 4.9184E-01 -3.1812E+00 1.7139E+01 -6.3961E+01 1.6452E+02 -2.9841E+02 3.8794E+02 -3.6328E+02 S8 1.3530E-02 -6.4358E-02 5.5734E-01 -2.8381E+00 9.0867E+00 -1.9993E+01 3.1287E+01 -3.5314E+01 2.8798E+01 S9 -9.5279E-02 5.4047E-02 -8.9688E-02 1.6332E-01 -1.9242E-01 1.3585E-01 -5.7913E-02 1.4172E-02 -1.5543E-03 S10 -7.0740E-02 -1.0080E-01 2.1082E-01 -2.9309E-01 2.7326E-01 -1.6477E-01 6.1039E-02 -1.2454E-02 1.0611E-03 S11 6.5026E-02 -1.1639E-01 1.8189E-01 -2.0747E-01 1.4617E-01 -6.5174E-02 1.7943E-02 -2.7780E-03 1.8474E-04 S12 -1.6452E-01 1.5176E-01 -2.0235E-02 -6.1970E-02 5.1296E-02 -1.9797E-02 4.2652E-03 -4.9361E-04 2.3942E-05 S13 -9.7102E-02 7.7161E-02 -7.7418E-02 5.1072E-02 -2.2445E-02 6.3094E-03 -1.0855E-03 1.0450E-04 -4.3097E-06 S14 1.6276E-01 -1.8802E-01 1.0800E-01 -4.0631E-02 1.0059E-02 -1.5920E-03 1.5370E-04 -8.2178E-06 1.8626E-07 S15 -1.2138E-01 1.2098E-02 1.4198E-02 -5.6699E-03 1.0028E-03 -1.0008E-04 5.8292E-06 -1.8549E-07 2.4985E-09 S16 -1.5366E-01 5.4757E-02 -1.4895E-02 2.9686E-03 -4.0633E-04 3.6162E-05 -1.9768E-06 6.0023E-08 -7.7400E-10

[0179] Table 18

[0180] 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 18D It can be seen that the optical imaging lens provided in Example 9 can achieve good imaging quality.

[0181] Example 10

[0182] The following reference Figures 19 to 20D An optical imaging lens according to Example 10 of the present application is described. Fig.19 A schematic structural diagram of an optical imaging lens according to Embodiment 10 of the present application is shown.

[0183] like Fig.19 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0184] The first lens E1 has negative focal power, and its object side surface S1 is concave, 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 convex, 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 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 sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0185] In this example, the total effective focal length f of the optical imaging lens is 3.92 mm, the total length TTL of the optical imaging lens is 6.10 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 4.70 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 51.2°, and the aperture value Fno of the optical imaging lens is 1.70.

[0186] Table 19 shows the basic parameters of the optical imaging lens of Example 10, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 20 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 10, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0187]

[0188] Table 19

[0189]

[0190]

[0191] Table 20

[0192] Fig. 20A The axial chromatic aberration curve of the optical imaging lens of Example 10 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 20B The astigmatism curve of the optical imaging lens of Example 10 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 20C The distortion curve of the optical imaging lens of Example 10 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.20DThe magnification chromatic aberration curve of the optical imaging lens of Example 10 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 20A to FIG. 20D It can be seen that the optical imaging lens provided in Example 10 can achieve good imaging quality.

[0193] In summary, Examples 1 to 10 respectively satisfy the relationships shown in Table 21.

[0194] Conditional formula\Example 1 2 3 4 5 6 7 8 9 10 R7 / f -1.29 -1.38 -1.42 -1.41 -1.21 -1.13 -1.01 -1.03 -1.19 -1.65 f / f3 0.78 0.78 0.78 0.77 0.78 0.78 0.84 0.83 0.83 0.83 f7 / f8 -1.26 -1.19 -1.21 -1.20 -1.18 -1.16 -0.96 -0.96 -0.98 -0.98 R6 / R5 -0.50 -0.53 -0.55 -0.55 -0.47 -0.43 -0.45 -0.48 -0.49 -0.52 f / R3-f / R4 0.73 0.71 0.71 0.72 0.64 0.74 1.04 1.11 1.10 1.16 f / EPD 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 TTL / f12 0.81 0.80 0.80 0.81 0.79 0.79 0.72 0.71 0.73 0.73 V6 25.90 25.90 25.90 25.90 25.90 25.90 19.20 25.90 19.20 19.20 CT4 / (T34+T45) 1.05 1.00 0.97 0.96 1.17 1.02 0.58 0.55 0.61 0.62 CT5 / CT6 0.62 0.62 0.63 0.65 0.66 0.63 0.76 0.91 0.73 0.72 CT8 / ET8 0.59 0.63 0.61 0.58 0.67 0.53 0.65 0.61 0.76 0.80 (T67+T78) / ∑AT 0.55 0.55 0.54 0.54 0.56 0.55 0.49 0.46 0.49 0.48 DT31 / DT61 0.71 0.73 0.74 0.74 0.73 0.72 0.64 0.66 0.65 0.64 |SAG72 / SAG71| 0.48 0.12 0.06 0.26 0.72 0.47 0.40 0.59 0.55 0.54

[0195] Table 21

[0196] 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.

[0197] 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. An optical imaging lens, characterized in that: The lens comprises, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens having optical power; The second lens has positive refractive power, its object side surface is convex, and its image side surface is concave; The third lens has positive refractive power, and its object side surface is convex, and its image side surface is convex; The fourth lens has negative optical power, and its object side surface is concave; The fifth lens has negative optical power, its object side surface is convex, and its image side surface is concave; The sixth lens has negative optical power, and its image side surface is concave; The seventh lens has positive refractive power, its object side surface is convex, and its image side surface is concave; The eighth lens has negative optical power, and its image side surface is concave; The number of lenses having optical power in the optical imaging lens is eight; The maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: 49.9°≤Semi-FOV≤51.2°; and The total effective focal length f of the optical imaging lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: 0.64≤f / R3-f / R4≤1.

16.

2. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens and the effective focal length f3 of the third lens satisfy: 0.77≤f / f3≤0.

84.

3. The optical imaging lens according to claim 1, wherein: The effective focal length f7 of the seventh lens and the effective focal length f8 of the eighth lens satisfy: -1.26≤f7 / f8≤-0.

96.

4. The optical imaging lens according to claim 1, wherein: A curvature radius R6 of the image-side surface of the third lens and a curvature radius R5 of the object-side surface of the third lens satisfy: -0.55≤R6 / R5≤-0.

43.

5. The optical imaging lens according to claim 1, wherein: The curvature radius R7 of the object side surface of the fourth lens element and the total effective focal length f of the optical imaging lens satisfy: -1.65≤R7 / f≤-1.

01.

6. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f / EPD=1.

70.

7. The optical imaging lens according to claim 1, wherein: The Abbe number V6 of the sixth lens satisfies: 19.20≤V6≤25.

90.

8. The optical imaging lens according to claim 1, wherein: A center thickness CT4 of the fourth lens on the optical axis, a spacing distance T34 between the third lens and the fourth lens on the optical axis, and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy: 0.55≤CT4 / (T34+T45)≤1.

17.

9. The optical imaging lens according to claim 1, wherein: A center thickness CT5 of the fifth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis satisfy: 0.62≤CT5 / CT6≤0.

91.

10. The optical imaging lens according to claim 1, wherein: A center thickness CT8 of the eighth lens on the optical axis and an edge thickness ET8 of the eighth lens satisfy: 0.53≤CT8 / ET8≤0.

80.

11. The optical imaging lens according to claim 1, wherein: An effective half-aperture DT31 of the object-side surface of the third lens and an effective half-aperture DT61 of the object-side surface of the sixth lens satisfy: 0.64≤DT31 / DT61≤0.

74.

12. The optical imaging lens according to claim 1, wherein: The distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis and the distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis satisfy: 0.06≤|SAG72 / SAG71|≤0.

72.

13. The optical imaging lens according to any one of claims 1 to 12, characterized in that: 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 and a combined focal length f12 of the first lens and the second lens satisfy: 0.71≤TTL / f12≤0.

81.

14. The optical imaging lens according to any one of claims 1 to 12, characterized in that: A distance T67 between the sixth lens and the seventh lens on the optical axis, a distance T78 between the seventh lens and the eighth lens on the optical axis, and a sum ∑AT of distances between any two adjacent lenses from the first lens to the eighth lens on the optical axis satisfy: 0.46≤(T67+T78) / ∑AT≤0.56.

Images