Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which comprises, in order from the object side to the image side along the optical axis: a first lens with positive optical power, whose object side surface is a concave surface; a second lens with negative optical power, whose image side surface is a convex surface; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with optical power; a seventh lens with optical power; and an eighth lens with optical power.

Description

Technical Field

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

[0002] In recent years, with the rapid development and popularization of portable electronic products, smartphones have become entertainment devices carried by everyone. The pixel, imaging quality, resolution and other photographing performances of the imaging lenses mounted thereon have also been significantly improved. Therefore, the trend of mobile phone cameras replacing traditional cameras has become more prominent.

[0003] Meanwhile, along with the development trend of portable electronic products, the optical imaging lenses mounted thereon need to have a thin and light size and also ensure good imaging quality. The photosensitive devices of optical lenses are usually Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor). Due to the continuous improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been continuously reduced and the number of pixels has been continuously increased, and the imaging quality of optical imaging lenses also needs to be further improved. Summary of the Invention

[0004] The present application provides such an optical imaging lens, which may sequentially include, from the object side to the image side along the optical axis: a first lens with positive optical power, whose object side is concave; a second lens with negative optical power, whose image side is convex; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with optical power; a seventh lens with optical power; and an eighth lens with optical power.

[0005] In some embodiments, the optical imaging lens may satisfy: |ODT| < 2.6%, where ODT is the optical distortion of the optical imaging lens.

[0006] In some embodiments, the optical imaging lens may satisfy: -6.5 < f1 / f2 < -1.5, where f1 is the effective focal length of the first lens and f2 is the effective focal length of the second lens.

[0007] In some embodiments, the optical imaging lens may satisfy: 1.5 < R4 / f3 < 3.5, where R4 is the radius of curvature of the image side of the second lens and f3 is the effective focal length of the third lens.

[0008] In some embodiments, the optical imaging lens may satisfy: 2.0 < f4 / R5 < 3.5, where f4 is the effective focal length of the fourth lens and R5 is the radius of curvature of the object side surface of the third lens.

[0009] In some embodiments, the optical imaging lens may satisfy: 1.0 < f6 / R11 < 2.0, where f6 is the effective focal length of the sixth lens and R11 is the radius of curvature of the object side surface of the sixth lens.

[0010] In some embodiments, the optical imaging lens may satisfy: 1.0 < f / f7 < 1.5, where f is the total effective focal length of the optical imaging lens and f7 is the effective focal length of the seventh lens.

[0011] In some embodiments, the optical imaging lens may satisfy: -4.0 < f8 / R16 < -2.5, where f8 is the effective focal length of the eighth lens and R16 is the radius of curvature of the image side surface of the eighth lens.

[0012] In some embodiments, the optical imaging lens may satisfy: 1.0 < R9 / R8 < 3.5, where R8 is the radius of curvature of the image side surface of the fourth lens and R9 is the radius of curvature of the object side surface of the fifth lens.

[0013] In some embodiments, the optical imaging lens may satisfy: 3.0 ≤ R13 / CT7 < 3.5, where R13 is the radius of curvature of the object side surface of the seventh lens and CT7 is the central thickness of the seventh lens along the optical axis.

[0014] In some embodiments, the optical imaging lens may satisfy: -12.0 < R11 / CT6 < -7.0, where R11 is the radius of curvature of the object side surface of the sixth lens and CT6 is the central thickness of the sixth lens along the optical axis.

[0015] In some embodiments, the optical imaging lens may satisfy: 2.0 < R7 / R6 < 4.0, where R6 is the radius of curvature of the image side surface of the third lens and R7 is the radius of curvature of the object side surface of the fourth lens.

[0016] In some embodiments, the optical imaging lens may satisfy: 3.0 < TTL / ∑AT < 4.0, where TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, and ∑AT is the sum of the distances along the optical axis between any two adjacent lenses from the first lens to the eighth lens.

[0017] In some embodiments, the optical imaging lens may satisfy: 1.5 < T78 / T56 < 2.1, where T56 is the distance along the optical axis between the fifth lens and the sixth lens, and T78 is the distance along the optical axis between the seventh lens and the eighth lens.

[0018] In some embodiments, the optical imaging lens may satisfy: 2.0 < CT4 / CT5 < 3.0, where CT4 is the central thickness of the fourth lens along the optical axis, and CT5 is the central thickness of the fifth lens along the optical axis.

[0019] In some embodiments, the optical imaging lens may satisfy: f / EPD < 2.1, 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.

[0020] In some embodiments, the optical imaging lens may satisfy: FOV ≥ 90°, where FOV is the maximum field of view angle of the optical imaging lens.

[0021] In some embodiments, the optical imaging lens may satisfy: ImgH ≥ 5.0 mm, where ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. Description of the Drawings

[0022] In conjunction with the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objectives, and advantages of the present application will become more apparent. In the drawings:

[0023] Figure 1 A schematic structural diagram of the optical imaging lens according to Embodiment 1 of the present application is shown;

[0024] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 1 are respectively shown;

[0025] Figure 3 A schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application is shown;

[0026] 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 2 are respectively shown;

[0027] Figure 5 A schematic structural diagram of the optical imaging lens according to Embodiment 3 of the present application is shown;

[0028] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 3 are respectively shown;

[0029] Figure 7 A schematic structural diagram of the optical imaging lens according to Embodiment 4 of the present application is shown;

[0030] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 4 are respectively shown;

[0031] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0032] 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;

[0033] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown; and

[0034] 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. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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 subject is called the object side of the lens, and the surface of each lens closest to the imaging side is called the image side of the lens.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The features, principles and other aspects of the present application are described in detail below.

[0043] 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 first lens to the eighth lens are arranged in sequence from the object side to the image side along the optical axis of the optical imaging lens, and there may be an air gap between any two adjacent lenses.

[0044] In an exemplary embodiment, the first lens may have positive power, and its object side surface is concave; the second lens may have negative power, and its image side surface is convex; the third lens may have power; the fourth lens may have power; the fifth lens may have power; the sixth lens may have power; the seventh lens may have power; and the eighth lens may have power. The first lens has positive power and its object side surface is concave, which can ensure that the first lens has good processability and enables the optical imaging lens to have the advantage of a large field of view. The second lens has negative power and its image side surface is convex, which can effectively reduce the tolerance sensitivity of the optical imaging lens.

[0045] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: |ODT| < 2.6%, where ODT is the optical distortion of the optical imaging lens. By reasonably configuring the lens structure, the optical distortion of the optical imaging lens within the entire field of view does not exceed 2.6%. The reasonable control of the optical distortion of the optical imaging lens is beneficial to reducing the degree of distortion of the imaged object.

[0046] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: -6.5 < f1 / f2 < -1.5, where f1 is the effective focal length of the first lens and f2 is the effective focal length of the second lens. Reasonably configuring the optical powers of the first lens and the second lens is beneficial to sharing the large object-side field of view and correcting the off-axis aberration of the lens on the image side of the second lens, thereby improving the imaging quality of the optical imaging lens.

[0047] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.5 < R4 / f3 < 3.5, where R4 is the radius of curvature of the image side surface of the second lens and f3 is the effective focal length of the third lens. Controlling the ratio of the radius of curvature of the image side surface of the second lens to the effective focal length of the third lens within a reasonable range is beneficial to reducing the introduction of spherical aberration and improving the imaging quality of the optical imaging lens. Optionally, R4 and f3 can satisfy 1.8 < R4 / f3 < 3.3.

[0048] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 2.0 < f4 / R5 < 3.5, where f4 is the effective focal length of the fourth lens and R5 is the radius of curvature of the object side surface of the third lens. Satisfying 2.0 < f4 / R5 < 3.5 is beneficial to balancing the imaging quality of the optical imaging lens and the assembly tolerance sensitivity of the third lens and the fourth lens, so as to obtain a high imaging quality while尽可能 reducing the assembly tolerance sensitivity of the third lens and the fourth lens. For example, f4 and R5 can satisfy 2.3 < f4 / R5 < 3.2. Optionally, the fourth lens can have a positive optical power, and the object side surface of the third lens can be a convex surface.

[0049] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.0 < f6 / R11 < 2.0, where f6 is the effective focal length of the sixth lens and R11 is the radius of curvature of the object side surface of the sixth lens. Satisfying 1.0 < f6 / R11 < 2.0 is beneficial to controlling the field curvature contribution of the object side surface of the sixth lens within a reasonable range. For example, f6 and R11 can satisfy 1.3 < f6 / R11 < 1.9. Optionally, the sixth lens can have a negative optical power, and the object side surface of the sixth lens can be a concave surface.

[0050] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < f / f7 < 1.5, where f is the total effective focal length of the optical imaging lens, and f7 is the effective focal length of the seventh lens. Reasonably controlling the effective focal length of the seventh lens is beneficial to reducing the deflection angle of the light rays located within the optical imaging lens, thereby reducing the sensitivity of the optical imaging lens. Optionally, the seventh lens may have a positive optical power.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -4.0 < f8 / R16 < -2.5, where f8 is the effective focal length of the eighth lens, and R16 is the radius of curvature of the image side surface of the eighth lens. Controlling the ratio of the effective focal length of the eighth lens to the radius of curvature of the image side surface of the eighth lens within a reasonable range is beneficial to compensating for the coma aberration generated by the lens located at the front end position of the optical imaging lens, such that the optical imaging lens has good imaging quality. For example, f8 and R16 may satisfy -3.8 < f8 / R16 < -2.8. Optionally, the eighth lens may have a negative optical power, and the image side surface of the eighth lens may be a concave surface.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < R9 / R8 < 3.5, where R8 is the radius of curvature of the image side surface of the fourth lens, and R9 is the radius of curvature of the object side surface of the fifth lens. Satisfying 1.0 < R9 / R8 < 3.5 can effectively eliminate the spherical aberration of the optical imaging lens and obtain a high-definition image. Optionally, the image side surface of the fourth lens may be a convex surface, and the object side surface of the fifth lens may be a concave surface.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0 ≤ R13 / CT7 < 3.5, where R13 is the radius of curvature of the object side surface of the seventh lens, and CT7 is the central thickness of the seventh lens along the optical axis. Satisfying 3.0 ≤ R13 / CT7 < 3.5 is beneficial to reducing the process difficulty of injection molding of the seventh lens, such that the seventh lens is easy to injection mold and improves the processability of the optical imaging lens. Optionally, the object side surface of the seventh lens may be a convex surface.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -12.0 < R11 / CT6 < -7.0, where R11 is the radius of curvature of the object side surface of the sixth lens, and CT6 is the central thickness of the sixth lens along the optical axis. Satisfying -12.0 < R11 / CT6 < -7.0 is beneficial to ensuring that the sixth lens has good processability. Optionally, the object side surface of the sixth lens may be a concave surface.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.0 < R7 / R6 < 4.0, where R6 is the radius of curvature of the image side of the third lens, and R7 is the radius of curvature of the object side of the fourth lens. Satisfying 2.0 < R7 / R6 < 4.0 enables the optical imaging lens to better match the chief ray angle of the photosensitive chip of its imaging surface. Optionally, the image side of the third lens may be concave, and the object side of the fourth lens may be convex.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0 < TTL / ∑AT < 4.0, where TTL is the distance along the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens, and ∑AT is the sum of the distances along the optical axis between any two adjacent lenses from the first lens to the eighth lens. Satisfying 3.0 < TTL / ∑AT < 4.0 is beneficial to reasonably control the distortion of the optical imaging lens. For example, TTL and ∑AT may satisfy 3.2 < TTL / ∑AT < 3.8.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < T78 / T56 < 2.1, where T56 is the distance along the optical axis between the fifth lens and the sixth lens, and T78 is the distance along the optical axis between the seventh lens and the eighth lens. Satisfying 1.5 < T78 / T56 < 2.1 is beneficial to reducing the thickness sensitivity of the optical imaging lens and beneficial to correcting field curvature.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.0 < CT4 / CT5 < 3.0, where CT4 is the central thickness of the fourth lens along the optical axis, and CT5 is the central thickness of the fifth lens along the optical axis. Satisfying 2.0 < CT4 / CT5 < 3.0 is beneficial to controlling the distortion contribution of each field of view of the optical imaging lens within a reasonable range, thereby improving the imaging quality of the optical imaging lens.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f / EPD < 2.1, 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. The F number of the optical imaging lens being less than 2 can achieve the characteristic of a large aperture of the optical imaging lens. For example, f and EPD may satisfy 1.7 ≤ f / EPD ≤ 1.9.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: FOV ≥ 90°, where FOV is the maximum field of view angle of the optical imaging lens. Satisfying FOV ≥ 90° is beneficial to enabling the optical imaging lens to obtain a larger field of view range, thereby improving the ability of the optical imaging lens to collect object information.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: ImgH ≥ 5.0 mm, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens. Meeting ImgH ≥ 5.0 mm is conducive to achieving the imaging effect of the large image plane of the optical imaging lens. For example, 5.2 mm ≤ ImgH ≤ 6.0 mm.

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

[0063] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the eight lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between each lens, the volume of the optical imaging lens can be effectively reduced and the processability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. The optical imaging lens configured as above can have characteristics such as high imaging quality and a large field of view.

[0064] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical lens, 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 lens. 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, that is, 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.

[0065] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the 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.

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

[0067] Example 1

[0068] 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.

[0069] like Figure 1 As shown, the optical imaging lens may include, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, 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.

[0070] 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 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 convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has positive focal power, and its object side surface S13 is convex, and its image side surface S14 is convex. 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.

[0071] Table 1 shows 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).

[0072]

[0073] Table 1

[0074] In this example, the total effective focal length f of the optical imaging lens is 4.69 mm, the total length TTL of the optical imaging lens (i.e., the distance along the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 of the optical imaging lens) is 7.20 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 5.35 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 48.0°.

[0075] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the eighth lens E8 are both aspherical surfaces, and the surface shape x of the aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0076]

[0077] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric mirror surface S1-S16 in Example 1.

[0078] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.3700E-01 -2.7619E-02 4.3819E-03 -1.7556E-03 -5.5919E-04 -9.3166E-05 -5.3956E-05 -2.2053E-05 2.3252E-05 S2 4.8017E-01 -1.9718E-02 3.6758E-03 -1.0666E-03 -3.8026E-04 7.0466E-05 -5.7721E-05 -2.0854E-07 1.3736E-05 S3 -4.8573E-03 -7.3203E-04 1.4404E-03 -1.0595E-04 9.2299E-05 7.6227E-05 -6.5170E-05 3.5185E-05 -3.6264E-07 S4 2.2494E-02 2.0091E-03 -1.0746E-03 1.3098E-03 3.8324E-04 7.7447E-05 5.7673E-05 3.9223E-05 2.0623E-06 S5 1.2226E-02 -9.9229E-03 -1.6799E-03 1.4548E-03 8.5384E-04 2.7239E-04 3.8039E-05 2.8430E-06 -6.3713E-06 S6 -5.6682E-02 2.5982E-03 8.0821E-04 5.7826E-04 2.2575E-04 4.3950E-05 6.4975E-06 -1.5543E-07 3.0337E-06 S7 -7.5771E-02 -4.6591E-03 -2.2831E-04 2.5167E-06 2.0233E-05 6.9221E-06 7.7776E-06 1.6030E-06 2.7162E-06 S8 -2.1286E-01 -7.4856E-03 -1.7696E-03 -6.5046E-04 -4.4967E-05 -2.8591E-06 2.2890E-05 6.8117E-06 4.9112E-06 S9 -3.1150E-01 1.5806E-02 8.4611E-04 -1.8196E-03 5.9459E-05 1.0410E-05 -5.1583E-05 -2.2568E-06 -8.1475E-06 S10 -2.0961E-01 2.4006E-02 9.7405E-03 1.5440E-03 1.6205E-03 1.7956E-04 -2.0599E-05 2.9810E-05 -1.8212E-05 S11 2.6063E-01 -1.1856E-01 9.2729E-03 2.3974E-03 -2.0632E-03 -3.7881E-03 -3.0168E-03 -9.1395E-04 -3.1551E-04 S12 -6.0702E-01 2.5300E-01 -7.0781E-02 2.2875E-02 -7.0891E-03 -8.1460E-04 2.6534E-03 2.2626E-03 8.9456E-04 S13 -1.4368E+00 1.7555E-01 2.3963E-01 -1.2399E-01 -1.4889E-02 1.9606E-02 1.8757E-02 -1.5944E-02 -4.1843E-03 S14 -1.4780E-01 -4.4298E-01 2.5645E-01 -1.9219E-01 9.9502E-02 -1.8410E-02 1.0220E-02 -1.6474E-02 1.9586E-03 S15 -1.9166E+00 9.4447E-01 -4.7385E-01 1.9910E-01 -2.2562E-02 -2.1563E-03 1.9065E-02 -5.7902E-03 -2.4917E-03 S16 -1.0766E+01 2.3225E+00 -8.6872E-01 3.5410E-01 -1.2621E-01 7.8994E-02 -1.5227E-02 2.6293E-02 -7.7920E-03

[0079] Table 2

[0080] 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 field angles. 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.

[0081] Example 2

[0082] 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.

[0083] like Figure 3 As shown, the optical imaging lens may include, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, 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.

[0084] 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 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 convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The 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.

[0085] In this example, the total effective focal length f of the optical imaging lens is 4.61 mm, the total length TTL of the optical imaging lens is 7.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 5.35 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 48.9°.

[0086] 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 A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface S1-S16 in Example 2, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0087]

[0088] Table 3

[0089]

[0090]

[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 field angles. 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.

[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 may include, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, 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.

[0096] 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 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 convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The 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 convex. 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.

[0097] In this example, the total effective focal length f of the optical imaging lens is 4.52 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 5.35 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 49.2°.

[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 A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface S1-S16 in Example 3, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0099]

[0100]

[0101] Table 5

[0102] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.2141E-01 -3.3470E-02 1.7809E-03 -7.5805E-04 -4.3654E-04 2.6450E-05 -4.8875E-05 6.9261E-06 9.8839E-06 S2 5.0085E-01 -2.1155E-02 2.5038E-03 -5.8716E-04 -1.9405E-04 4.2359E-05 -4.2891E-05 5.7044E-06 8.2804E-06 S3 3.0378E-03 3.2352E-04 3.3276E-03 3.8162E-04 3.9766E-04 1.0844E-05 9.2433E-06 1.9931E-05 1.4117E-05 S4 2.0868E-02 3.1222E-03 1.4142E-03 1.9064E-03 1.3122E-03 3.0065E-04 2.5710E-04 5.3987E-05 5.0658E-05 S5 3.0552E-03 -1.0530E-02 -2.0318E-03 9.3648E-04 9.6101E-04 3.2203E-04 1.2884E-04 8.0803E-06 -2.9027E-06 S6 -6.2110E-02 3.3494E-03 2.1924E-04 2.6643E-04 1.1265E-04 3.5489E-05 1.2781E-05 -4.0230E-07 2.7155E-06 S7 -7.5324E-02 -3.0956E-03 1.2714E-05 6.0856E-05 2.7454E-05 8.0876E-06 2.9078E-06 1.2765E-06 -1.7718E-07 S8 -2.0804E-01 -3.9379E-03 -9.5650E-04 -3.9961E-04 3.0853E-05 -8.7789E-07 1.0613E-05 -5.6436E-07 2.1702E-06 S9 -3.0620E-01 1.6666E-02 2.3230E-03 -1.3961E-03 2.9324E-04 4.6963E-05 -2.7363E-05 -2.7063E-06 -1.4513E-06 S10 -2.1134E-01 1.6158E-02 1.1169E-02 7.9402E-04 1.7822E-03 2.0784E-04 9.0837E-05 4.9521E-05 1.4438E-05 S11 3.2780E-01 -1.0418E-01 -2.7138E-03 -9.3147E-03 -3.3647E-03 -9.9199E-04 -6.2312E-04 -1.3047E-04 -5.3854E-05 S12 -6.1232E-01 2.6887E-01 -8.1629E-02 1.6059E-02 -6.6463E-03 2.1082E-03 -5.8320E-05 7.2348E-05 -6.7161E-05 S13 -1.3924E+00 1.7077E-01 2.3558E-01 -1.5285E-01 -1.0454E-02 2.6626E-02 1.7931E-02 -1.5757E-02 -5.5942E-03 S14 -1.4974E-01 -4.8075E-01 2.4076E-01 -1.7388E-01 1.0327E-01 -3.1432E-02 1.0454E-02 -9.1323E-03 8.0161E-04 S15 -1.7461E+00 9.2387E-01 -4.6893E-01 2.0959E-01 -4.5021E-02 -2.0878E-03 2.4123E-02 -6.7630E-03 6.2949E-04 S16 -1.0931E+01 2.4516E+00 -8.5829E-01 3.6474E-01 -1.4477E-01 7.8330E-02 -1.9822E-02 2.6613E-02 -4.2126E-03

[0103] Table 6

[0104] 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 field angles. 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 may include, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, 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.

[0108] 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 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 convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is concave. The 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.

[0109] In this example, the total effective focal length f of the optical imaging lens is 4.61 mm, the total length TTL of the optical imaging lens is 7.17 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 5.35 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 48.9°.

[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 A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface S1-S16 in Example 4, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above-mentioned 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 field angles. 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.

[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 may include, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, 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.

[0120] 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 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 convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. 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 convex. 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.

[0121] In this example, the total effective focal length f of the optical imaging lens is 4.71 mm, the total length TTL of the optical imaging lens is 7.26 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 5.35 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 49.4°.

[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 A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface S1-S16 in Example 5, wherein the surface shape 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 8.9337E-01 -5.8270E-02 -3.3425E-03 -5.5425E-03 -6.5433E-04 3.1332E-04 1.3911E-04 1.3263E-04 4.1054E-05 S2 7.9893E-01 -4.4843E-02 -2.9122E-03 -3.6067E-03 1.3390E-03 1.0940E-03 3.2754E-04 1.5495E-04 2.9498E-05 S3 1.8584E-02 8.1073E-03 3.7594E-03 6.5914E-04 1.3644E-03 2.2003E-04 3.0015E-04 1.7723E-04 1.5697E-05 S4 1.6092E-02 -1.9176E-03 -2.4902E-03 6.2195E-05 5.3414E-04 -5.2471E-05 1.8646E-04 5.8792E-05 2.5293E-05 S5 1.6037E-02 -1.0715E-02 -4.1379E-03 -6.1143E-04 2.4877E-04 1.1963E-04 7.5785E-05 3.3374E-05 5.8080E-06 S6 -5.1025E-02 2.0860E-03 -3.4372E-04 3.9849E-05 5.4082E-05 1.8920E-05 8.3606E-06 -2.1221E-06 3.7868E-07 S7 -8.6552E-02 -3.6030E-03 -4.8893E-04 -6.8659E-05 2.7573E-05 2.7297E-05 1.4888E-05 8.5056E-06 7.7223E-07 S8 -2.7490E-01 -3.9642E-04 -2.9201E-03 -1.1654E-03 6.6771E-05 -2.1747E-05 -9.7743E-06 -8.8526E-06 7.9087E-07 S9 -3.5145E-01 1.1488E-02 4.1990E-03 -3.1307E-03 4.1643E-04 1.0231E-04 -1.8255E-04 -4.4874E-05 -1.6243E-05 S10 -9.8295E-02 -1.1736E-02 1.5029E-02 -4.2997E-04 1.6007E-03 1.8383E-04 -1.2276E-04 -6.0506E-06 -1.2522E-05 S11 3.7378E-01 -1.1275E-01 9.1490E-03 2.2950E-04 -2.3644E-03 -6.2479E-04 -5.2774E-04 -2.3255E-04 -2.4094E-05 S12 -5.6720E-01 2.3418E-01 -6.6968E-02 1.2449E-02 -8.8794E-03 9.9955E-04 9.8149E-04 1.4223E-04 -1.1626E-04 S13 -8.7937E-01 -1.3985E-01 1.5497E-01 7.5801E-03 -6.5150E-03 -1.4305E-02 4.7964E-04 2.3718E-03 1.2020E-03 S14 2.2600E-01 -4.2792E-01 2.3715E-01 -1.3904E-01 3.7259E-02 -1.2617E-02 8.8523E-03 -2.0673E-03 4.0899E-04 S15 -1.6920E+00 9.0388E-01 -4.3230E-01 1.4887E-01 -2.5109E-02 -9.5635E-03 9.2509E-03 -9.4170E-04 -2.1773E-03 S16 -8.1518E+00 1.8402E+00 -5.6904E-01 2.0745E-01 -8.4956E-02 3.8981E-02 -2.2718E-02 1.3579E-02 -4.1479E-03

[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 field angles. 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 Example 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 may include, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, 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.

[0132] 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 negative focal power, and its object side surface S3 is concave, 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 convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The 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 convex. 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.

[0133] In this example, the total effective focal length f of the optical imaging lens is 4.74 mm, the total length TTL of the optical imaging lens is 7.30 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 5.35 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 48.8°.

[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 A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspherical mirror surface S1-S16 in Example 6, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0135]

[0136] Table 11

[0137] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.9047E-01 -6.3229E-02 -7.0505E-03 -6.5685E-03 -6.9555E-04 5.7090E-04 3.6694E-04 2.2028E-04 7.0130E-05 S2 8.9684E-01 -5.0055E-02 1.4122E-03 -1.5490E-03 3.0227E-03 1.6998E-03 4.7869E-04 1.8879E-04 2.1325E-05 S3 2.5655E-02 8.2485E-03 5.3134E-03 1.8988E-03 1.9767E-03 5.4428E-04 3.9643E-04 2.3724E-04 -2.4914E-05 S4 1.8153E-02 1.6359E-03 -1.4342E-03 1.0497E-03 6.9553E-04 4.2737E-05 1.6847E-04 9.1857E-05 1.2854E-05 S5 1.1877E-02 -1.3504E-02 -4.0487E-03 -9.7300E-05 5.4641E-04 2.5526E-04 1.1016E-04 4.5811E-05 1.4528E-05 S6 -5.3434E-02 3.1042E-03 -1.7198E-04 2.3933E-04 1.3097E-04 5.2000E-05 1.4566E-05 1.6226E-06 -7.5978E-07 S7 -9.2776E-02 -3.1293E-03 -1.8278E-04 5.6531E-05 6.0948E-05 2.3458E-05 7.0252E-06 -4.4724E-08 -1.4653E-06 S8 -2.6631E-01 -1.8183E-03 -2.9143E-03 -8.1265E-04 8.8896E-05 -1.4573E-05 1.2724E-05 1.1281E-06 3.5562E-06 S9 -3.4412E-01 1.2338E-02 2.2562E-03 -2.9721E-03 5.3474E-04 -3.5826E-05 -1.2402E-04 -2.1291E-05 -8.4153E-06 S10 -1.1014E-01 -9.4228E-03 1.3335E-02 -1.1041E-03 1.8473E-03 1.5071E-05 -3.9611E-05 1.3054E-05 -5.2461E-06 S11 3.9197E-01 -1.1797E-01 1.0143E-02 -3.8219E-03 -1.7319E-03 -5.9491E-04 -4.3198E-04 -1.7859E-04 -2.2159E-05 S12 -5.7579E-01 2.4285E-01 -7.4087E-02 1.2333E-02 -7.1767E-03 1.7948E-03 7.5078E-04 -1.3080E-04 -6.2217E-05 S13 -8.8439E-01 -1.3210E-01 1.6347E-01 5.3414E-03 -6.8378E-03 -1.5529E-02 9.7482E-04 2.6142E-03 1.4677E-03 S14 1.8183E-01 -4.2178E-01 2.3909E-01 -1.4030E-01 3.9208E-02 -1.4331E-02 9.8304E-03 -2.2653E-03 9.4114E-04 S15 -1.6849E+00 8.9700E-01 -4.3259E-01 1.4949E-01 -2.7248E-02 -9.9657E-03 1.0270E-02 -1.8500E-03 -1.7023E-03 S16 -8.3966E+00 1.9161E+00 -6.1359E-01 2.2049E-01 -9.0844E-02 3.8693E-02 -2.3119E-02 1.4681E-02 -5.2366E-03

[0138] Table 12

[0139] 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 field angles. Fig.12DThe 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.

[0140] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0141] Conditional / Example 1 2 3 4 5 6 f1 / f2 -6.07 -3.70 -3.45 -3.96 -3.87 -1.88 R4 / f3 2.40 2.11 1.93 2.02 2.27 3.14 f4 / R5 3.08 2.61 2.41 2.59 3.36 3.00 f6 / R11 1.88 1.46 1.51 1.43 1.68 1.57 f / f7 1.25 1.25 1.28 1.27 1.31 1.34 f8 / R16 -3.21 -3.49 -3.55 -3.19 -2.99 -3.10 R9 / R8 1.53 1.37 1.42 1.63 2.85 3.44 R13 / CT7 3.47 3.21 3.16 3.00 3.29 3.12 R11 / CT6 -9.16 -11.43 -10.03 -11.21 -7.17 -7.92 R7 / R6 3.91 3.28 2.59 2.37 3.45 3.40 TTL / ∑AT 3.48 3.44 3.72 3.56 3.69 3.68 T78 / T56 1.62 1.54 1.53 1.84 2.08 2.02 CT4 / CT5 2.02 2.65 2.10 2.14 2.62 2.61 f / EPD 1.9 1.85 1.83 1.85 1.89 1.89 FOV(°) 96.1 97.9 98.5 97.9 98.9 97.6

[0142] Table 13

[0143] The present application also provides a camera 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 camera device such as a digital camera, or a camera module integrated in a mobile electronic device such as a mobile phone. The camera device is equipped with the optical imaging lens described above.

[0144] 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 the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive power, its object side surface is concave and its image side surface is convex; A second lens having negative optical power, whose image side surface is concave; The third lens has positive power, its object side surface is convex and its image side surface is concave; a fourth lens element having positive refractive power, whose object-side surface is convex and whose image-side surface is convex; a fifth lens having positive or negative refractive power, whose object side surface is concave; a sixth lens having negative optical power, whose object side surface is concave; a seventh lens element having positive refractive power and having a convex object-side surface; and An eighth lens having negative optical power, whose object side surface is convex and image side surface is concave; The number of lenses having optical power in the optical imaging lens is eight; The optical imaging lens satisfies -6.07≤f1 / f2≤-1.88, wherein f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens.

2. The optical imaging lens according to claim 1, wherein: |ODT|<2.6%, Wherein, ODT is the optical distortion of the optical imaging lens.

3. The optical imaging lens according to claim 1, wherein: 1.93≤R4 / f3≤3.14, Wherein, R4 is the curvature radius of the image side surface of the second lens, and f3 is the effective focal length of the third lens.

4. The optical imaging lens according to claim 1, wherein: 2.41≤f4 / R5≤3.36, Wherein, f4 is the effective focal length of the fourth lens, and R5 is the radius of curvature of the object side surface of the third lens.

5. The optical imaging lens according to claim 1, wherein: 1.43≤f6 / R11<1.9, Wherein, f6 is the effective focal length of the sixth lens, and R11 is the radius of curvature of the object side surface of the sixth lens.

6. The optical imaging lens according to claim 1, wherein: 1.25≤f / f7≤1.34, Wherein, f is the total effective focal length of the optical imaging lens, and f7 is the effective focal length of the seventh lens.

7. The optical imaging lens according to claim 1, wherein: -3.55≤f8 / R16≤-2.99, Wherein, f8 is the effective focal length of the eighth lens, and R16 is the radius of curvature of the image side surface of the eighth lens.

8. The optical imaging lens according to claim 1, wherein: 1.37≤R9 / R8≤3.44, Wherein, R8 is the curvature radius of the image side surface of the fourth lens, and R9 is the curvature radius of the object side surface of the fifth lens.

9. The optical imaging lens according to claim 1, wherein: 3.0≤R13 / CT7<3.5, Wherein, R13 is the radius of curvature of the object side surface of the seventh lens, and CT7 is the center thickness of the seventh lens along the optical axis.

10. The optical imaging lens according to claim 1, wherein: -11.43≤R11 / CT6≤-7.17, Wherein, R11 is the curvature radius of the object side surface of the sixth lens, and CT6 is the center thickness of the sixth lens along the optical axis.

11. The optical imaging lens according to claim 1, wherein: 2.37≤R7 / R6≤3.91, Wherein, R6 is the curvature radius of the image side surface of the third lens, and R7 is the curvature radius of the object side surface of the fourth lens.

12. The optical imaging lens according to claim 1, wherein: 1.5 <T78 / T56<2.1, Wherein, T56 is the distance between the fifth lens and the sixth lens along the optical axis, and T78 is the distance between the seventh lens and the eighth lens along the optical axis.

13. The optical imaging lens according to claim 1, wherein: 2.0 <CT4 / CT5≤2.65, Wherein, CT4 is the center thickness of the fourth lens along the optical axis, and CT5 is the center thickness of the fifth lens along the optical axis.

14. The optical imaging lens according to any one of claims 1 to 13, characterized in that: 3.44≤TTL / ∑AT≤3.72, Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens along 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 along the optical axis.

15. The optical imaging lens according to any one of claims 1 to 13, characterized in that: 1.83≤f / EPD≤1.9, Wherein, f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens.

16. The optical imaging lens according to any one of claims 1 to 13, characterized in that: 96.1°≤FOV≤98.9°, Wherein, FOV is the maximum field of view of the optical imaging lens.

17. The optical imaging lens according to any one of claims 1 to 13, characterized in that: The optical imaging lens meets at least one of the following conditions: 5.2 mm≤ImgH≤6.0 mm, 5.2 mm ≤ ImgH ≤ 5.35 mm, 5.35 mm≤ImgH≤6.0 mm, Wherein, ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens.

Images