Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis, a first lens with a positive optical power, a second lens with a negative optical power, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens with a positive optical power, and an eighth lens with a negative optical power; the object sides of the first lens to the third lens and the sixth lens to the seventh lens are all convex surfaces, and the image sides of the first lens to the third lens and the sixth lens to the seventh lens are all concave surfaces; wherein, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy 4 mm < ImgH × EPD / f < 6 mm, the combined focal length f12 of the first lens and the second lens, the central thickness CT1 of the first lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy 8.5 < f12 / (CT1 + CT2) < 10.5, and the number of lenses with optical power in the optical imaging lens is eight.

Description

Technical Field

[0001] This application relates to the field of optical devices, and particularly to an eight-piece optical imaging lens. Background Art

[0002] With the rapid development of portable electronic products such as smart phones, the requirements for the imaging function of smart phones are becoming increasingly strict. The optical imaging lenses used in existing smart phones are often designed in the form of five-piece, six-piece or seven-piece structures, which have a small shooting range, cannot meet the imaging requirements of large image planes and large apertures, and will affect the imaging quality of the optical imaging lens. Summary of the Invention

[0003] This application provides an optical imaging lens that can at least solve or partially solve at least one of the above-mentioned disadvantages or other disadvantages in the prior art.

[0004] One aspect of this application provides such an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive focal power, whose object side is convex and image side is concave; a second lens with a negative focal power, whose object side is convex and image side is concave; a third lens with a focal power, whose object side is convex and image side is concave; a fourth lens with a focal power; a fifth lens with a focal power; a sixth lens with a focal power, whose object sides are all convex and image sides are all concave; a seventh lens with a positive focal power, whose object sides are all convex and image sides are all concave; an eighth lens with a negative focal power; wherein, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy 4mm < ImgH × EPD / f < 6mm, the combined focal length f12 of the first lens and the second lens, the central thickness CT1 of the first lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy 8.5 < f12 / (CT1 + CT2) < 10.5, and the number of lenses with focal power in the optical imaging lens is eight.

[0005] According to an exemplary embodiment of this application, the axial distance TD on the optical axis from the object side of the first lens to the image side of the eighth lens and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy TD / ImgH < 1.1.

[0006] According to an exemplary embodiment of this application, the total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy 7.5mm < f × tan(FOV / 2) < 8.5mm.

[0007] According to an exemplary embodiment of the present application, the curvature radius R1 of the object-side surface of the first lens, the curvature radius R2 of the image-side surface of the first lens, and the effective focal length f1 of the first lens satisfy 1.3<(R1+R2) / f1<2.3.

[0008] According to an exemplary embodiment of the present application, the effective focal length f2 of the second lens and the effective focal length f8 of the eighth lens satisfy 2.7 <f2 / f8<3.7。

[0009] According to an exemplary embodiment of the present application, a curvature radius R5 of the object-side surface of the third lens, a curvature radius R6 of the image-side surface of the third lens, a curvature radius R3 of the object-side surface of the second lens, and a curvature radius R4 of the image-side surface of the second lens satisfy 1.7<(R5+R6) / (R3+R4)<6.0.

[0010] According to an exemplary embodiment of the present application, a curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, a curvature radius R13 of the object-side surface of the seventh lens, and a curvature radius R14 of the image-side surface of the seventh lens satisfy 0<(R11+R12) / (R13+R14)<2.6.

[0011] According to an exemplary embodiment of the present application, an on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis to the effective half-aperture vertex of the object side surface of the second lens, an on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective half-aperture vertex of the image side surface of the second lens, and an edge thickness ET2 of the second lens satisfy 2.2<(SAG21+SAG22) / ET2<3.2.

[0012] According to an exemplary embodiment of the present application, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective half-aperture vertex of the object side surface of the sixth lens, the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective half-aperture vertex of the image side surface of the sixth lens, and the on-axis distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis to the effective half-aperture vertex of the object side surface of the seventh lens satisfy 1.2<(SAG61+SAG62) / SAG71<2.2.

[0013] According to an exemplary embodiment of the present application, the on-axis distance SAG82 between the intersection of the image side surface of the eighth lens and the optical axis and the effective half-aperture vertex of the image side surface of the eighth lens and the on-axis distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis and the effective half-aperture vertex of the image side surface of the seventh lens meet 0.7 <SAG82 / SAG72<1.9。

[0014] According to an exemplary embodiment of the present application, an air interval T78 between the seventh lens and the eighth lens on the optical axis, an edge thickness ET7 of the seventh lens, and an edge thickness ET8 of the eighth lens satisfy 0.7<(ET7+ET8) / T78<1.7.

[0015] By controlling the relationship between the half-image height and the reciprocal of the aperture of the optical imaging lens, the present application can enable the optical imaging lens to have a large aperture. At the same time, by reasonably controlling the optical focal length of each lens and optimizing the optical parameters, the tolerance sensitivity of the optical imaging lens can be reduced, so that the optical imaging lens can better achieve light path deflection, ensure that the optical imaging lens has good imaging quality, and improve the processability of the optical imaging lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 1 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application;

[0018] Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Example 1 of the present application are respectively shown;

[0019] Figure 3 1 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application;

[0020] Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Example 2 of the present application are respectively shown;

[0021] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application;

[0022] 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Example 3 of the present application are respectively shown;

[0023] Figure 7 1 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application;

[0024] Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Example 4 of the present application are respectively shown;

[0025] Figure 91 shows a schematic structural diagram of an optical imaging lens according to Example 5 of the present application;

[0026] 10A to 10D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Example 5 of the present application are respectively shown;

[0027] Figure 11 1 shows a schematic structural diagram of an optical imaging lens according to Example 6 of the present application;

[0028] 12A to 12D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Example 6 of the present application are respectively shown;

[0029] Figure 13 shows a schematic structural diagram of an optical imaging lens according to Example 7 of the present application; and

[0030] 14A to 14D The axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens according to Example 7 of the present application are respectively shown. DETAILED DESCRIPTION

[0031] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely 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.

[0032] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0033] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0034] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, 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 surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0035] 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 preclude 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 list of 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.

[0036] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0037] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0038] The features, principles and other aspects of the present application are described in detail below.

[0039] An optical imaging lens according to an exemplary embodiment of the present application may include eight lenses having 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. These eight lenses are arranged sequentially along the optical axis from the object side to the image side. Among the first through eighth lenses, any two adjacent lenses may have an air gap between them.

[0040] In example embodiments, 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 may each have positive or negative power.

[0041] In an exemplary embodiment, the first lens and the seventh lens have positive optical powers, and the second lens and the eighth lens have negative optical powers. By controlling the optical powers of the first two lenses and the last two lenses of the optical imaging lens, the astigmatism generated by the front-end optics and the back-end optics of the optical imaging lens can be effectively balanced, the tolerance sensitivity can be reduced, and the optical imaging lens can have good imaging quality.

[0042] In an exemplary embodiment, the object sides of the first lens to the third lens are all convex, and the image sides of the first lens to the third lens are all concave. By constraining the surface types of the first lens to the third lens of the optical imaging lens, the incident light range can be reasonably restricted, the poor-quality marginal rays can be eliminated, the off-axis aberration of the optical imaging lens can be reduced, and the resolution of the optical imaging lens can be effectively improved.

[0043] In an exemplary embodiment, the object sides of the sixth lens and the seventh lens are all convex, and the image sides of the sixth lens and the seventh lens are all concave. By constraining the surface types of the sixth lens and the seventh lens of the optical imaging lens, the deflection angles of the light rays at the sixth lens and the seventh lens can be controlled, the deflection angle of the optical path of the optical imaging lens can be prevented from being too large, which is beneficial to improving the overall performance of the optical imaging lens.

[0044] In an exemplary embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy 4mm < ImgH × EPD / f < 6mm. In the example, 4.80mm < ImgH × EPD / f < 5.40mm. By reasonably controlling the mutual relationship among half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens, the total effective focal length of the optical imaging lens, and the entrance pupil diameter of the optical imaging lens, the optical imaging lens can achieve the characteristic of a large aperture.

[0045] In an exemplary embodiment, the combined focal length f12 of the first lens and the second lens, the central thickness CT1 of the first lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy 8.5 < f12 / (CT1 + CT2) < 10.5. In the example, 8.9 < f12 / (CT1 + CT2) < 10.0. By reasonably controlling the mutual relationship among the combined focal length of the first lens and the second lens, the central thickness of the first lens on the optical axis, and the central thickness of the second lens on the optical axis, the deflection angles of the marginal fields at the first lens and the second lens can be controlled, thereby effectively reducing the sensitivity of the entire optical imaging lens and improving the production yield of the optical imaging lens.

[0046] In an exemplary embodiment, the axial distance TD on the optical axis from the object side surface of the first lens to the image side surface of the eighth lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfy TD / ImgH < 1.1. In an example, 0.9 < TD / ImgH < 1.0. By reasonably controlling the relationship between the axial distance on the optical axis from the object side surface of the first lens to the image side surface of the eighth lens and half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens, the body length of the optical imaging lens can be controlled, effectively reducing the volume of the optical imaging lens, and thus achieving miniaturization of the optical imaging lens.

[0047] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy 7.5 mm < f × tan(FOV / 2) < 8.5 mm. In an example, 7.5 mm < f × tan(FOV / 2) < 8.1 mm. By reasonably controlling the relationship between the total effective focal length of the optical imaging lens and the maximum field angle of the optical imaging lens, the size of the image surface of the optical imaging lens can be effectively controlled, enabling the optical imaging lens to achieve the characteristic of a large image surface.

[0048] In an exemplary embodiment, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the effective focal length f1 of the first lens satisfy 1.3 < (R1 + R2) / f1 < 2.3. In an example, 1.6 < (R1 + R2) / f1 < 2.1. By reasonably controlling the relationship between the radius of curvature of the object side surface of the first lens, the radius of curvature of the image side surface of the first lens, and the effective focal length of the first lens, the deflection angle of light at the first lens can be effectively controlled, enabling the optical imaging lens to better achieve light path deflection, and thus balancing the high-order spherical aberration generated by the optical imaging lens.

[0049] In an exemplary embodiment, the effective focal length f2 of the second lens and the effective focal length f8 of the eighth lens satisfy 2.7 < f2 / f8 < 3.7. In an example, 3.0 < f2 / f8 < 3.6. By reasonably controlling the optical powers of the second lens and the eighth lens, the optical sensitivities of the second lens and the eighth lens can be reduced, thereby effectively reducing the sensitivity of the entire optical imaging lens and improving the production yield of the optical imaging lens.

[0050] In an exemplary embodiment, the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens satisfy the relationship 1.7 < (R5 + R6) / (R3 + R4) < 6.0. Properly controlling the relationship between the radius of curvature of the object-side surface of the third lens, the radius of curvature of the image-side surface of the third lens, the radius of curvature of the object-side surface of the second lens, and the radius of curvature of the image-side surface of the second lens can control the deflection angle of light at the second and third lenses, avoid excessive optical path deflection in the optical imaging lens, and ensure good imaging quality.

[0051] In an exemplary embodiment, the radius of curvature R11 of the object-side surface of the sixth lens element, the radius of curvature R12 of the image-side surface of the sixth lens element, the radius of curvature R13 of the object-side surface of the seventh lens element, and the radius of curvature R14 of the image-side surface of the seventh lens element satisfy the following relationship: 0 < (R11 + R12) / (R13 + R14) < 2.6. By properly controlling the relationship between the radius of curvature of the object-side surface of the sixth lens element, the radius of curvature of the image-side surface of the sixth lens element, the radius of curvature of the object-side surface of the seventh lens element, and the radius of curvature of the image-side surface of the seventh lens element, the deflection angle of light rays at the sixth and seventh lenses elements can be controlled, thereby effectively achieving optical path deflection in the optical imaging lens element and balancing the high-order spherical aberrations generated by the optical imaging lens element.

[0052] In an exemplary embodiment, the on-axis distance SAG21 between the intersection of the object-side surface of the second lens and the optical axis and the effective half-aperture vertex of the object-side surface of the second lens, the on-axis distance SAG22 between the intersection of the image-side surface of the second lens and the optical axis and the effective half-aperture vertex of the image-side surface of the second lens, and the edge thickness ET2 of the second lens satisfy 2.2 < (SAG21 + SAG22) / ET2 < 3.2. In an example, 2.4 < (SAG21 + SAG22) / ET2 < 3.0. By constraining the ratio of the sagittal height of the object-side surface and image-side surface of the second lens to the edge thickness of the second lens to be within a reasonable range, the second lens can be prevented from being too concave or too convex, thereby ensuring the reliability of the second lens molding.

[0053] In an exemplary embodiment, the axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis and the vertex of the effective semi-aperture of the object side surface of the sixth lens, the axial distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective semi-aperture of the image side surface of the sixth lens, and the axial distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective semi-aperture of the object side surface of the seventh lens satisfy 1.2 < (SAG61 + SAG62) / SAG71 < 2.2. By constraining the ratio of the sag heights of the object side surface and the image side surface of the sixth lens to the sag height of the object side surface of the seventh lens within a reasonable range, the shapes of the sixth lens and the seventh lens can be controlled, the processability of the sixth lens and the seventh lens can be improved. At the same time, it can also effectively balance the spherical aberration, coma and astigmatism generated by the optical imaging lens.

[0054] In an exemplary embodiment, the axial distance SAG82 between the intersection of the image side surface of the eighth lens and the optical axis and the vertex of the effective semi-aperture of the image side surface of the eighth lens, and the axial distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective semi-aperture of the image side surface of the seventh lens satisfy 0.7 < SAG82 / SAG72 < 1.9. By constraining the ratio of the sag height of the image side surface of the eighth lens to the sag height of the image side surface of the seventh lens within a reasonable range, the shapes of the seventh lens and the eighth lens can be controlled, the processability of the seventh lens and the eighth lens can be improved. At the same time, it can also improve the imaging quality of the optical imaging lens.

[0055] In an exemplary embodiment, the air gap T78 between the seventh lens and the eighth lens on the optical axis, the edge thickness ET7 of the seventh lens and the edge thickness ET8 of the eighth lens satisfy 0.7 < (ET7 + ET8) / T78 < 1.7. In an example, 0.95 < (ET7 + ET8) / T78 < 1.55. By reasonably controlling the mutual relationship between the air gap between the seventh lens and the eighth lens on the optical axis, the edge thickness of the seventh lens and the edge thickness of the eighth lens, it is possible to avoid the edges of the seventh lens and the eighth lens being too thin and difficult to form, and at the same time, it is possible to control the deflection angle of the light at the seventh lens and the eighth lens, mitigate the deflection of the light at the edges of the seventh lens and the eighth lens, and effectively avoid the risk of ghost images.

[0056] The optical imaging lens according to the above embodiment of the present application can use multiple lenses, such as eight lenses as described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., the volume of the optical imaging lens can be effectively reduced, the tolerance sensitivity of the optical imaging lens can be reduced, ensuring that the optical imaging lens has the characteristics of a large aperture, a large image surface and good imaging quality, and improving the processability of the optical imaging lens.

[0057] In an embodiment of the present application, at least one of the mirror surfaces of each lens from the first lens to the eighth lens is an aspherical mirror surface. The characteristic of an 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, the object side surface and the image side surface of each lens from the first lens to the eighth lens are aspherical mirror surfaces.

[0058] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while eight lenses are described in the embodiments, the optical imaging lens is not limited to eight lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0059] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0060] Example 1

[0061] The following reference Figures 1 to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Example 1 of the present application is shown.

[0062] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0063] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being 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.

[0064] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0065]

[0066] Table 1

[0067] In this embodiment, the total effective focal length of the optical imaging lens is f=8.46 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 7.99 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.27 mm.

[0068] 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. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0069]

[0070] Wherein, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface 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. Tables 2-1 and 2-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A80, A59, A61, A76, A80, A90, A10, A11, A12, A13, A14, A15 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A22 、A 24 、A 26 、A 28 and A 30 .

[0071]

[0072]

[0073] Table 2-1

[0074] Face number A18 A20 A22 A24 A26 A28 A30 S1 6.7143E-05 -5.3713E-06 -3.7529E-07 1.4980E-07 -1.7192E-08 9.5843E-10 -2.1935E-11 S2 2.8301E-03 -6.4072E-04 1.0487E-04 -1.2055E-05 9.2156E-07 -4.2011E-08 8.6323E-10 S3 -1.9320E-03 8.3642E-04 -2.1410E-04 3.5013E-05 -3.6058E-06 2.1385E-07 -5.5820E-09 S4 -1.7170E-02 5.4144E-03 -1.2035E-03 1.8437E-04 -1.8521E-05 1.0976E-06 -2.9074E-08 S5 1.0599E-02 -3.2228E-03 6.9629E-04 -1.0437E-04 1.0316E-05 -6.0451E-07 1.5905E-08 S6 -9.3099E-03 2.8771E-03 -6.3545E-04 9.7808E-05 -9.9673E-06 6.0455E-07 -1.6524E-08 S7 -6.0428E-03 1.5621E-03 -2.8239E-04 3.5004E-05 -2.8351E-06 1.3515E-07 -2.8755E-09 S8 -2.3442E-03 5.2123E-04 -8.0326E-05 8.4488E-06 -5.7910E-07 2.3316E-08 -4.1814E-10 S9 -2.0215E-04 5.3106E-05 -8.3714E-06 8.4660E-07 -5.3992E-08 1.9841E-09 -3.2103E-11 S10 -2.2064E-04 3.8114E-05 -4.6587E-06 3.9364E-07 -2.1852E-08 7.1610E-10 -1.0483E-11 S11 7.5653E-05 -1.0756E-05 1.0810E-06 -7.4953E-08 3.4080E-09 -9.1368E-11 1.0936E-12 S12 1.7795E-06 -3.5094E-07 3.6244E-08 -2.2827E-09 8.8274E-11 -1.9365E-12 1.8529E-14 S13 -7.9761E-06 6.5053E-07 -3.7359E-08 1.4695E-09 -3.7534E-11 5.5836E-13 -3.6527E-15 S14 -3.8418E-08 1.5754E-09 -3.8884E-11 3.3796E-13 9.1169E-15 -2.8557E-16 2.4019E-18 S15 -1.1507E-08 3.4764E-10 -7.6116E-12 1.1778E-13 -1.2222E-15 7.6326E-18 -2.1684E-20 S16 1.4568E-09 -4.5923E-11 1.0532E-12 -1.6871E-14 1.7812E-16 -1.1112E-18 3.0998E-21

[0075] Table 2-2

[0076] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. 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 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. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0077] Example 2

[0078] The following reference Figures 3 to 4D The optical imaging lens according to Example 2 of the present application is described. Figure 3 A schematic structural diagram of an optical imaging lens according to Example 2 of the present application is shown.

[0079] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0080] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being 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.

[0081] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0082]

[0083] Table 3

[0084] In this embodiment, the total effective focal length of the optical imaging lens is f=8.46 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 8.04 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.00 mm.

[0085] In Example 2, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Tables 4-1 and 4-2 list the high-order coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0086] Face number A4 A6 A8 A10 A12 A14 A16 S1 6.7933E-05 1.4804E-03 -2.4920E-03 2.8370E-03 -2.2400E-03 1.2811E-03 -5.4360E-04 S2 -9.9052E-03 2.6889E-02 -3.9920E-02 3.8388E-02 -2.5711E-02 1.2463E-02 -4.4688E-03 S3 -2.6081E-02 3.3633E-02 -4.5042E-02 4.1026E-02 -2.4922E-02 9.9303E-03 -2.3528E-03 S4 -1.7819E-02 7.3786E-03 3.9813E-03 -2.0498E-02 2.9871E-02 -2.5229E-02 1.3972E-02 S5 -8.5449E-03 9.2092E-03 -3.0598E-02 5.8930E-02 -7.3092E-02 6.1526E-02 -3.6349E-02 S6 -7.8053E-03 -2.8013E-03 1.2592E-02 -2.9714E-02 4.1357E-02 -3.7607E-02 2.3492E-02 S7 -5.6986E-03 -5.4408E-04 1.0979E-02 -2.6451E-02 3.0559E-02 -2.1880E-02 1.0561E-02 S8 -1.3183E-03 -9.2012E-03 2.7598E-02 -4.3218E-02 3.7462E-02 -2.0717E-02 7.8701E-03 S9 -5.4543E-03 -5.9717E-03 1.5640E-02 -2.2575E-02 1.7065E-02 -7.7464E-03 2.2820E-03 S10 -1.2573E-02 1.4053E-03 -6.8546E-04 -2.2192E-05 1.0850E-04 -3.8733E-05 6.9947E-06 S11 -2.9600E-02 1.3768E-02 -9.8225E-03 7.6056E-03 -4.4677E-03 1.8067E-03 -5.0824E-04 S12 -4.4738E-02 4.8290E-03 2.6896E-03 -1.2525E-03 7.8818E-05 9.5563E-05 -3.9804E-05 S13 1.7193E-02 -1.9246E-02 9.6843E-03 -4.2995E-03 1.3708E-03 -3.0722E-04 4.9062E-05 S14 5.8416E-02 -1.6632E-02 1.4606E-03 2.1786E-04 -8.5661E-05 1.3634E-05 -1.3990E-06 S15 -2.4306E-02 4.7785E-04 1.5903E-03 -4.2062E-04 5.7254E-05 -5.0470E-06 3.1184E-07 S16 -5.1534E-02 1.0800E-02 -1.7394E-03 2.1388E-04 -2.0959E-05 1.6449E-06 -1.0036E-07

[0087] Table 4-1

[0088] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.7243E-04 -4.0611E-05 6.9651E-06 -8.4084E-07 6.7426E-08 -3.2138E-09 6.8739E-11 S2 1.1968E-03 -2.3891E-04 3.5033E-05 -3.6592E-06 2.5726E-07 -1.0891E-08 2.0943E-10 S3 1.6657E-04 9.0492E-05 -3.6298E-05 6.7292E-06 -7.1864E-07 4.2562E-08 -1.0878E-09 S4 -5.2969E-03 1.3908E-03 -2.5022E-04 2.9767E-05 -2.1703E-06 8.2114E-08 -9.9317E-10 S5 1.5343E-02 -4.6502E-03 1.0039E-03 -1.5063E-04 1.4924E-05 -8.7765E-07 2.3191E-08 S6 -1.0344E-02 3.2409E-03 -7.1853E-04 1.1017E-04 -1.1113E-05 6.6327E-07 -1.7745E-08 S7 -3.5656E-03 8.5321E-04 -1.4405E-04 1.6768E-05 -1.2797E-06 5.7590E-08 -1.1578E-09 S8 -2.1316E-03 4.1719E-04 -5.8676E-05 5.7831E-06 -3.7882E-07 1.4796E-08 -2.6045E-10 S9 -4.5280E-04 6.1126E-05 -5.5324E-06 3.2028E-07 -1.0630E-08 1.4859E-10 2.3855E-13 S10 -7.2983E-07 4.1656E-08 -1.0166E-09 8.5027E-12 -6.6114E-13 0.0000E+00 0.0000E+00 S11 1.0108E-04 -1.4308E-05 1.4324E-06 -9.9070E-08 4.5009E-09 -1.2076E-10 1.4486E-12 S12 8.2357E-06 -1.0628E-06 9.0358E-08 -5.0790E-09 1.8219E-10 -3.7871E-12 3.4779E-14 S13 -5.6170E-06 4.5974E-07 -2.6570E-08 1.0558E-09 -2.7393E-11 4.1708E-13 -2.8222E-15 S14 1.0203E-07 -5.4438E-09 2.1212E-10 -5.8839E-12 1.0990E-13 -1.2358E-15 6.2998E-18 S15 -1.3954E-08 4.5627E-10 -1.0816E-11 1.8111E-13 -2.0319E-15 1.3708E-17 -4.2048E-20 S16 4.6093E-09 -1.5550E-10 3.7667E-12 -6.3475E-14 7.0483E-16 -4.6289E-18 1.3603E-20

[0089] Table 4-2

[0090] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 4D The 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. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0091] Example 3

[0092] The following reference Figures 5 to 6D The optical imaging lens according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Example 3 of the present application is shown.

[0093] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0094] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being 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.

[0095] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0096]

[0097]

[0098] Table 5

[0099] In this embodiment, the total effective focal length of the optical imaging lens is f=8.47 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 8.00 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.05 mm.

[0100] In Example 3, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Tables 6-1 and 6-2 list the high-order coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0101] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.0660E-04 4.7652E-03 -1.0224E-02 1.3759E-02 -1.2328E-02 7.6599E-03 -3.3823E-03 S2 1.5343E-03 -7.7828E-03 8.3067E-03 -5.2182E-03 2.1184E-03 -5.6469E-04 9.7587E-05 S3 -1.2544E-02 -4.5724E-03 3.1003E-03 3.2082E-04 -2.8255E-04 -1.1013E-03 1.3857E-03 S4 -1.3252E-02 -6.2832E-04 3.8082E-03 -8.8820E-03 1.3572E-02 -1.2679E-02 7.6838E-03 S5 -5.6989E-03 2.9472E-03 -8.2714E-03 1.2209E-02 -1.1939E-02 7.9201E-03 -3.6439E-03 S6 -9.5842E-03 1.3849E-02 -3.6871E-02 6.2118E-02 -7.0608E-02 5.5802E-02 -3.1374E-02 S7 -1.9229E-02 1.9748E-02 -2.3276E-02 1.5493E-02 -4.1369E-03 -1.7476E-03 2.1280E-03 S8 -8.1062E-02 1.5518E-01 -1.9094E-01 1.4880E-01 -8.0303E-02 3.1726E-02 -9.4526E-03 S9 -8.8926E-02 1.7848E-01 -2.2085E-01 1.7387E-01 -9.6860E-02 4.0451E-02 -1.2930E-02 S10 -1.9187E-02 1.2852E-02 -9.4906E-03 3.6018E-03 -5.3590E-04 -1.5845E-04 1.1626E-04 S11 -3.6084E-02 1.3650E-02 -1.8115E-03 -1.9878E-03 1.5495E-03 -6.2673E-04 1.7264E-04 S12 -4.5898E-02 6.2570E-03 4.5011E-03 -3.8092E-03 1.4839E-03 -3.6732E-04 6.1925E-05 S13 2.5808E-02 -2.5294E-02 1.0602E-02 -3.1319E-03 5.8461E-04 -6.3698E-05 2.9827E-06 S14 7.2862E-02 -3.7545E-02 1.3491E-02 -3.7450E-03 7.6333E-04 -1.1209E-04 1.1864E-05 S15 -4.7552E-02 -1.2815E-03 5.0165E-03 -1.4863E-03 2.3180E-04 -2.2934E-05 1.5425E-06 S16 -7.9924E-02 1.6506E-02 -1.8778E-03 4.5976E-05 1.8796E-05 -3.2989E-06 3.0139E-07

[0102] Table 6-1

[0103]

[0104]

[0105] Table 6-2

[0106] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion values corresponding to different image heights. Figure 6DThe 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. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0107] Example 4

[0108] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Example 4 of the present application is shown.

[0109] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0110] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being 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.

[0111] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0112]

[0113]

[0114] Table 7

[0115] In this embodiment, the total effective focal length of the optical imaging lens is f=8.51 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 8.04 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.20 mm.

[0116] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Tables 8-1 and 8-2 list the high-order coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0117] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.9553E-04 8.0183E-04 -1.7934E-03 2.7042E-03 -2.6500E-03 1.7592E-03 -8.1467E-04 S2 5.3066E-03 -2.9480E-03 -1.6858E-03 2.2462E-03 -1.0912E-03 3.0812E-04 -5.4643E-05 S3 -7.2459E-03 2.6462E-03 -5.6979E-03 4.2763E-03 -1.7958E-03 4.9537E-04 -8.1330E-05 S4 -1.1870E-02 4.9585E-03 -9.2984E-04 -5.2030E-03 8.8584E-03 -7.9131E-03 4.6689E-03 S5 -1.1216E-02 2.7131E-03 -1.3310E-03 -1.5565E-03 5.2494E-03 -6.7016E-03 5.0943E-03 S6 -1.0421E-02 -4.0229E-03 1.4959E-02 -2.6076E-02 2.9475E-02 -2.2890E-02 1.2555E-02 S7 -4.9803E-03 -6.3748E-03 9.5819E-03 -1.2151E-02 1.1655E-02 -8.3316E-03 4.3984E-03 S8 -6.9757E-03 -8.0738E-03 1.0388E-02 -1.0314E-02 7.4122E-03 -3.8978E-03 1.5108E-03 S9 -1.2619E-02 -8.4741E-04 -3.1059E-04 1.7080E-03 -2.1337E-03 1.4726E-03 -6.5026E-04 S10 -1.3985E-02 1.8067E-03 -8.5266E-04 1.1963E-04 5.8900E-05 -3.5179E-05 8.3151E-06 S11 -2.3793E-02 1.1667E-02 -5.7756E-03 2.3588E-03 -8.7742E-04 2.8119E-04 -7.1573E-05 S12 -5.1300E-02 1.8188E-02 -4.5542E-03 4.2599E-04 1.5793E-04 -7.7785E-05 1.7139E-05 S13 -1.1630E-03 -1.0210E-02 2.5318E-03 -9.7048E-04 3.5679E-04 -9.0170E-05 1.6376E-05 S14 6.4469E-02 -2.9933E-02 5.9855E-03 -5.3178E-04 -2.3375E-05 1.2828E-05 -1.8133E-06 S15 -2.7765E-02 -6.0907E-04 3.1564E-03 -8.9604E-04 1.2755E-04 -1.1094E-05 6.2979E-07 S16 -6.6589E-02 1.4354E-02 -2.0836E-03 1.6484E-04 6.6183E-07 -1.7439E-06 2.1213E-07

[0118] Table 8-1

[0119] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.6780E-04 -6.2838E-05 1.0448E-05 -1.2022E-06 9.1025E-08 -4.0788E-09 8.1937E-11 S2 6.0016E-06 -3.7178E-07 9.6254E-09 2.9157E-11 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.9793E-06 6.9212E-06 -2.2938E-06 4.1721E-07 -4.5029E-08 2.7004E-09 -6.9399E-11 S4 -1.9235E-03 5.5974E-04 -1.1394E-04 1.5758E-05 -1.3961E-06 7.0293E-08 -1.4846E-09 S5 -2.5604E-03 8.8492E-04 -2.1215E-04 3.4737E-05 -3.7104E-06 2.3312E-07 -6.5348E-09 S6 -4.9384E-03 1.3994E-03 -2.8348E-04 4.0085E-05 -3.7619E-06 2.1078E-07 -5.3422E-09 S7 -1.7078E-03 4.8463E-04 -9.9028E-05 1.4158E-05 -1.3422E-06 7.5719E-08 -1.9223E-09 S8 -4.3535E-04 9.3515E-05 -1.4813E-05 1.6801E-06 -1.2883E-07 5.9626E-09 -1.2526E-10 S9 1.9263E-04 -3.8871E-05 5.3220E-06 -4.8197E-07 2.7214E-08 -8.4332E-10 1.0289E-11 S10 -1.0440E-06 6.8338E-08 -1.8323E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 1.3657E-05 -1.8946E-06 1.8728E-07 -1.2841E-08 5.8060E-10 -1.5573E-11 1.8762E-13 S12 -2.3539E-06 2.1832E-07 -1.4052E-08 6.2622E-10 -1.8647E-11 3.3682E-13 -2.8075E-15 S13 -2.1954E-06 2.1447E-07 -1.4852E-08 7.0347E-10 -2.1572E-11 3.8507E-13 -3.0354E-15 S14 1.5651E-07 -9.3851E-09 4.0330E-10 -1.2243E-11 2.4891E-13 -3.0272E-15 1.6571E-17 S15 -2.3682E-08 5.7087E-10 -7.6587E-12 1.7092E-14 1.1517E-15 -1.7222E-17 8.2369E-20 S16 -1.4296E-08 6.2528E-10 -1.8450E-11 3.6580E-13 -4.6809E-15 3.4981E-17 -1.1610E-19

[0120] Table 8-2

[0121] Figure 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. 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. Figure 8D The 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. Figures 8A to 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 The optical imaging lens according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens according to Example 5 of the present application is shown.

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

[0125] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being 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] Table 9 shows the basic parameters of the optical imaging lens of Example 5, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0127]

[0128] Table 9

[0129] In this embodiment, the total effective focal length of the optical imaging lens is f=8.46 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 8.03 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.27 mm.

[0130] In Example 5, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Tables 10-1 and 10-2 list the high-order coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A30 .

[0131] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.0793E-04 2.2318E-03 -3.0692E-03 2.5779E-03 -1.2383E-03 2.1765E-04 1.2082E-04 S2 -2.1605E-02 3.8613E-02 -5.4596E-02 5.7920E-02 -4.5700E-02 2.6756E-02 -1.1619E-02 S3 -3.3714E-02 3.4044E-02 -4.2553E-02 4.2588E-02 -3.2465E-02 1.8726E-02 -8.1302E-03 S4 -1.5120E-02 -5.0989E-04 1.4700E-02 -3.1578E-02 4.0812E-02 -3.5631E-02 2.1939E-02 S5 -7.8015E-03 2.1230E-03 -1.2390E-03 3.0693E-04 -5.6243E-04 1.1248E-03 -1.1080E-03 S6 -1.4087E-02 1.2235E-02 -2.2989E-02 3.2856E-02 -3.3984E-02 2.5217E-02 -1.3545E-02 S7 -1.3506E-02 1.4842E-02 -2.6292E-02 3.0502E-02 -2.4265E-02 1.3490E-02 -5.3697E-03 S8 -2.1921E-02 4.1370E-02 -7.1295E-02 7.3641E-02 -5.0963E-02 2.5099E-02 -9.1150E-03 S9 -2.1139E-02 3.5924E-02 -6.0264E-02 5.7362E-02 -3.5526E-02 1.5414E-02 -4.9003E-03 S10 -9.9638E-03 2.5157E-03 -2.5958E-03 1.2945E-03 -4.0776E-04 8.4917E-05 -1.1411E-05 S11 -4.2098E-02 1.9612E-02 -6.6829E-03 1.5109E-03 -2.8407E-04 7.2682E-05 -2.2357E-05 S12 -7.5889E-02 1.6886E-02 -1.6481E-04 -1.5217E-03 5.8800E-04 -1.1159E-04 9.9224E-06 S13 1.0954E-02 -2.2025E-02 1.3466E-02 -6.0889E-03 1.9100E-03 -4.2183E-04 6.6521E-05 S14 6.4023E-02 -2.2017E-02 4.6219E-03 -7.7479E-04 1.0905E-04 -1.2391E-05 1.0798E-06 S15 -4.1542E-02 3.3258E-03 1.5424E-03 -4.4254E-04 5.6698E-05 -4.4273E-06 2.2943E-07 S16 -6.3331E-02 1.3431E-02 -1.9800E-03 2.0939E-04 -1.6885E-05 1.0746E-06 -5.4617E-08

[0132] Table 10-1

[0133] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.0360E-04 3.8559E-05 -8.8014E-06 1.3016E-06 -1.2215E-07 6.6343E-09 -1.5914E-10 S2 3.7345E-03 -8.8202E-04 1.5069E-04 -1.8081E-05 1.4428E-06 -6.8666E-08 1.4734E-09 S3 2.6376E-03 -6.3202E-04 1.0973E-04 -1.3369E-05 1.0805E-06 -5.1882E-08 1.1177E-09 S4 -9.7067E-03 3.0980E-03 -7.0648E-04 1.1217E-04 -1.1768E-05 7.3255E-07 -2.0475E-08 S5 6.5085E-04 -2.4860E-04 6.3622E-05 -1.0846E-05 1.1820E-06 -7.4503E-08 2.0681E-09 S6 5.3010E-03 -1.5097E-03 3.0916E-04 -4.4308E-05 4.2145E-06 -2.3891E-07 6.1089E-09 S7 1.5527E-03 -3.2739E-04 4.9950E-05 -5.3846E-06 3.8971E-07 -1.7005E-08 3.3810E-10 S8 2.4800E-03 -5.0500E-04 7.5691E-05 -8.0735E-06 5.7756E-07 -2.4754E-08 4.7922E-10 S9 1.1741E-03 -2.1429E-04 2.9481E-05 -2.9525E-06 2.0171E-07 -8.3422E-09 1.5659E-10 S10 9.2751E-07 -4.0838E-08 8.4168E-10 -1.6750E-11 7.1100E-13 0.0000E+00 0.0000E+00 S11 5.1593E-06 -7.9134E-07 8.0066E-08 -5.2694E-09 2.1456E-10 -4.7946E-12 4.2785E-14 S12 1.8755E-07 -1.5153E-07 1.8000E-08 -1.1318E-09 4.1334E-11 -8.2656E-13 6.9870E-15 S13 -7.5254E-06 6.0913E-07 -3.4876E-08 1.3768E-09 -3.5613E-11 5.4293E-13 -3.6970E-15 S14 -6.9830E-08 3.2803E-09 -1.0952E-10 2.5162E-12 -3.7588E-14 3.2675E-16 -1.2455E-18 S15 -8.0640E-09 1.8790E-10 -2.6240E-12 1.3242E-14 1.9398E-16 -3.6054E-18 1.8080E-20 S16 2.2268E-09 -7.2741E-11 1.8691E-12 -3.6099E-14 4.8482E-16 -3.9746E-18 1.4811E-20

[0134] Table 10-2

[0135] Figure 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 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. Figure 10D The 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. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0136] Example 6

[0137] The following reference Figures 11 to 12D The optical imaging lens according to Example 6 of the present application is described. Figure 11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0138] like Figure 11 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0139] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being 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.

[0140] Table 11 shows the basic parameters of the optical imaging lens of Example 6, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0141]

[0142] Table 11

[0143] In this embodiment, the total effective focal length of the optical imaging lens is f=8.47 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 8.03 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.15 mm.

[0144] In Example 6, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Tables 12-1 and 12-2 list the high-order coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0145]

[0146]

[0147] Table 12-1

[0148] Face number A18 A20 A22 A24 A26 A28 A30 S1 -4.1146E-05 2.2806E-05 -5.9367E-06 9.3564E-07 -9.1000E-08 5.0498E-09 -1.2276E-10 S2 3.3590E-03 -7.7913E-04 1.3074E-04 -1.5415E-05 1.2093E-06 -5.6619E-08 1.1959E-09 S3 2.1133E-03 -4.8439E-04 8.0438E-05 -9.3753E-06 7.2512E-07 -3.3339E-08 6.8818E-10 S4 -8.9965E-03 2.8472E-03 -6.4336E-04 1.0116E-04 -1.0505E-05 6.4710E-07 -1.7890E-08 S5 1.0194E-02 -3.4206E-03 8.1853E-04 -1.3619E-04 1.4965E-05 -9.7616E-07 2.8623E-08 S6 -1.6479E-03 5.1888E-04 -1.1736E-04 1.8544E-05 -1.9406E-06 1.2066E-07 -3.3678E-09 S7 -4.4806E-03 1.0168E-03 -1.6823E-04 1.9679E-05 -1.5395E-06 7.2178E-08 -1.5324E-09 S8 -5.9588E-03 1.0625E-03 -1.3748E-04 1.2529E-05 -7.6149E-07 2.7669E-08 -4.5413E-10 S9 -5.1556E-03 9.0754E-04 -1.1640E-04 1.0564E-05 -6.4252E-07 2.3496E-08 -3.9063E-10 S10 4.8680E-07 -2.3872E-08 5.5991E-10 -1.2643E-11 5.0504E-13 0.0000E+00 0.0000E+00 S11 3.9243E-06 -6.5326E-07 6.7666E-08 -4.4277E-09 1.7494E-10 -3.6616E-12 2.8109E-14 S12 -2.3685E-06 1.0540E-07 -7.4181E-10 -1.7285E-10 8.8290E-12 -1.7260E-13 1.0860E-15 S13 -7.8705E-06 6.3862E-07 -3.6666E-08 1.4519E-09 -3.7680E-11 5.7649E-13 -3.9402E-15 S14 -6.6564E-08 3.2126E-09 -1.0999E-10 2.5899E-12 -3.9709E-14 3.5551E-16 -1.4045E-18 S15 -4.8953E-09 7.8386E-11 1.1444E-13 -3.5002E-14 7.6231E-16 -7.6270E-18 3.1016E-20 S16 3.5861E-09 -1.1879E-10 2.9959E-12 -5.5502E-14 7.0798E-16 -5.5145E-18 1.9633E-20

[0149] Table 12-2

[0150] Figure 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion values corresponding to different image heights. Figure 12D The 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. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0151] Example 7

[0152] The following reference Figures 13 to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0153] like Figure 13 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0154] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being 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.

[0155] Table 13 shows the basic parameters of the optical imaging lens of Example 7, where the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0156]

[0157] Table 13

[0158] In this embodiment, the total effective focal length of the optical imaging lens is f=8.47 mm, the axial distance TD along the optical axis from the object-side surface S1 of the first lens element E1 to the image-side surface S16 of the eighth lens element E8 is 8.04 mm, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens is ImgH=8.25 mm.

[0159] In Example 7, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Tables 14-1 and 14-2 list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0160]

[0161]

[0162] Table 14-1

[0163] Face number A18 A20 A22 A24 A26 A28 A30 S1 -7.4703E-05 2.7429E-05 -6.0638E-06 8.6197E-07 -7.7424E-08 4.0140E-09 -9.1752E-11 S2 1.2532E-03 -2.7704E-04 4.4244E-05 -4.9518E-06 3.6748E-07 -1.6203E-08 3.2057E-10 S3 -1.3702E-03 4.5998E-04 -1.0394E-04 1.5809E-05 -1.5552E-06 8.9491E-08 -2.2889E-09 S4 -6.3729E-03 1.9103E-03 -4.0646E-04 5.9806E-05 -5.7724E-06 3.2787E-07 -8.2774E-09 S5 1.8161E-02 -5.9552E-03 1.3939E-03 -2.2713E-04 2.4473E-05 -1.5673E-06 4.5165E-08 S6 -7.9957E-03 2.5997E-03 -6.0006E-04 9.5932E-05 -1.0093E-05 6.2833E-07 -1.7523E-08 S7 -2.2010E-03 4.8633E-04 -7.7709E-05 8.6901E-06 -6.4268E-07 2.8152E-08 -5.5163E-10 S8 -4.2088E-03 7.5548E-04 -9.7663E-05 8.8189E-06 -5.2624E-07 1.8588E-08 -2.9328E-10 S9 -4.0588E-03 7.3086E-04 -9.5296E-05 8.7411E-06 -5.3460E-07 1.9571E-08 -3.2449E-10 S10 3.3691E-07 -1.2383E-08 1.6168E-10 -4.2229E-12 1.2549E-13 0.0000E+00 0.0000E+00 S11 3.6777E-05 -5.4592E-06 5.6078E-07 -3.9187E-08 1.7777E-09 -4.7163E-11 5.5473E-13 S12 1.5314E-06 -4.0788E-07 4.4146E-08 -2.7853E-09 1.0624E-10 -2.2810E-12 2.1249E-14 S13 -7.8933E-06 6.3879E-07 -3.6623E-08 1.4498E-09 -3.7662E-11 5.7741E-13 -3.9590E-15 S14 -3.4486E-08 1.2831E-09 -3.0054E-11 3.3601E-13 1.6953E-15 -9.1985E-17 7.5635E-19 S15 -1.1519E-08 3.7740E-10 -9.0150E-12 1.5314E-13 -1.7545E-15 1.2159E-17 -3.8496E-20 S16 1.0826E-08 -4.1274E-10 1.1434E-11 -2.2305E-13 2.8995E-15 -2.2518E-17 7.8957E-20

[0164] Table 14-2

[0165] Figure 14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 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. Figure 14D The 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. 14A to 14DIt can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0166] In summary, the conditional expressions of Examples 1 to 7 satisfy the relationship shown in Table 15.

[0167] Conditional formula / Example 1 2 3 4 5 6 7 ImgH×EPD / f(mm) 4.95 4.91 4.94 5.09 4.81 4.79 4.94 TD / ImgH 0.97 1.00 0.99 0.98 0.97 0.99 0.97 f×tan(FOV / 2)(mm) 8.07 7.77 7.83 8.03 8.04 7.92 8.01 (R1+R2) / f1 2.01 2.01 1.74 1.83 1.88 1.91 1.68 f2 / f8 3.36 3.31 3.43 3.09 3.53 3.44 3.54 (R5+R6) / (R3+R4) 3.22 2.98 3.42 1.79 5.90 5.88 4.16 (R11+R12) / (R13+R14) 0.25 0.24 0.46 2.53 0.13 0.21 0.23 f12 / (CT1+CT2) 9.57 8.90 9.19 9.95 9.11 9.06 9.08 (SAG21+SAG22) / ET2 2.83 2.92 2.83 2.52 2.54 2.53 2.44 (SAG61+SAG62) / SAG71 1.36 1.45 1.57 1.46 1.73 2.07 1.79 SAG82 / SAG72 0.90 0.91 1.09 0.95 1.62 1.77 1.69 (ET7+ET8) / T78 1.11 1.23 1.04 1.52 0.97 1.05 1.07

[0168] Table 15

[0169] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0170] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

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 refractive power, its object side surface is convex, and its image side surface is concave; The second lens has negative optical power, its object side surface is convex, and its image side surface is concave; The third lens has optical power, and its object-side surface is convex and its image-side surface is concave; The fourth lens has optical power; The fifth lens has optical power; The sixth lens has optical power, an object-side surface thereof being convex, and an image-side surface thereof being 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 third lens and the fifth lens have positive optical power, and the fourth lens has negative optical power; or the third lens and the sixth lens have negative optical power, and the fifth lens has positive optical power; or the third lens and the fourth lens have positive optical power, and the fifth lens and the sixth lens have negative optical power; Half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy 4.79mm≤ImgH×EPD / f≤5.09mm, The combined focal length f12 of the first lens and the second lens, the center thickness CT1 of the first lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis satisfy 8.90≤f12 / (CT1+CT2)≤9.95, The curvature radius R5 of the object-side surface of the third lens, the curvature radius R6 of the image-side surface of the third lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens satisfy 1.79≤(R5+R6) / (R3+R4)≤5.90, The on-axis distance TD from the object side surface of the first lens to the image side surface of the eighth lens on the optical axis and half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy 0.97≤TD / ImgH≤1.00, The effective focal length f2 of the second lens and the effective focal length f8 of the eighth lens satisfy 3.09≤f2 / f8≤3.54, and The optical imaging lens has eight lenses with optical power.

2. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy 7.77 mm ≤ f×tan(FOV / 2) < 8.1 mm.

3. The optical imaging lens according to claim 1, wherein: A curvature radius R1 of the object-side surface of the first lens, a curvature radius R2 of the image-side surface of the first lens, and an effective focal length f1 of the first lens satisfy 1.68≤(R1+R2) / f1≤2.

01.

4. The optical imaging lens according to claim 1, wherein: A curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, a curvature radius R13 of the object-side surface of the seventh lens, and a curvature radius R14 of the image-side surface of the seventh lens satisfy 0.13≤(R11+R12) / (R13+R14)≤2.

53.

5. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis to the effective half-aperture vertex of the object side surface of the second lens, the on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective half-aperture vertex of the image side surface of the second lens, and the edge thickness ET2 of the second lens satisfy 2.4<(SAG21+SAG22) / ET2≤2.

92.

6. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective half-aperture vertex of the object side surface of the sixth lens, the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective half-aperture vertex of the image side surface of the sixth lens, and the on-axis distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis to the effective half-aperture vertex of the object side surface of the seventh lens satisfy 1.36≤(SAG61+SAG62) / SAG71≤2.

07.

7. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG82 between the intersection of the image side surface of the eighth lens and the optical axis to the effective half-aperture vertex of the image side surface of the eighth lens and the on-axis distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis to the effective half-aperture vertex of the image side surface of the seventh lens satisfy 0.90≤SAG82 / SAG72≤1.

77.

8. The optical imaging lens according to claim 1, wherein: An air gap T78 between the seventh lens and the eighth lens on the optical axis, an edge thickness ET7 of the seventh lens, and an edge thickness ET8 of the eighth lens satisfy 0.95<(ET7+ET8) / T78<1.55.

Images