A high-pixel vehicle-mounted lens module and lens

Abstract

The application relates to the technical field of lenses, in particular to a high-pixel vehicle-mounted lens module and lens, which comprises 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 arranged in sequence along an optical axis direction from an object side to an image side; the first lens has negative optical power, the second lens has negative optical power, the third lens has positive optical power, the fourth lens has positive optical power, the fifth lens and the sixth lens are glued together and have negative optical power, the seventh lens has positive optical power, and the eighth lens has positive optical power. The high-pixel vehicle-mounted lens module and lens can realize a large aperture, have a large aperture and high resolution.

Description

Technical Field

[0001] This invention relates to the field of lens technology, and in particular to a high-pixel automotive lens module and lens. Background Technology

[0002] As safe driving becomes increasingly important, the market demands higher standards for autonomous driving assistance systems, thus requiring higher resolution and aperture from automotive lenses. The arrangement of the lens module in an automotive lens affects its image quality. For example, most current lenses have an aperture of f / 2.0 or larger and a small diameter, which can affect image clarity and is detrimental to safe driving. Summary of the Invention

[0003] This invention addresses the problems of existing technologies by providing a high-pixel automotive lens module that can achieve a larger aperture, thereby providing a larger aperture and higher resolution.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-pixel automotive lens module, comprising 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 arranged sequentially from the object side to the image side along the optical axis; the first lens is a concave-convex lens with negative optical power, the second lens is a concave-convex lens with negative optical power, the third lens is a concave-convex lens with positive optical power, the fourth lens is a convex-convex lens with positive optical power, the fifth lens is cemented with the sixth lens and has negative optical power, the fifth lens is a convex-convex lens, the sixth lens is a concave-concave lens, the seventh lens is a convex-convex lens with positive optical power, and the eighth lens is a concave-convex lens with positive optical power; the first lens and the eighth lens are both aspherical glass lenses, and the second, third, fourth, fifth, sixth, and seventh lenses are all spherical glass lenses.

[0005] Preferably, the object-side surface of the first lens is convex, and the image-side surface of the first lens is concave; the object-side surface of the second lens is concave, and the image-side surface of the second lens is convex; the object-side surface of the third lens is concave, and the image-side surface of the third lens is convex; the object-side surface of the eighth lens is concave, and the image-side surface of the eighth lens is convex.

[0006] Preferably, the optical power of the lens module is φ, the optical power of the first lens is φ1, the optical power of the second lens is φ2, the optical power of the third lens is φ3, the optical power of the fourth lens is φ4, the optical power of the cemented fifth and sixth lenses is φ56, the optical power of the seventh lens is φ7, and the optical power of the eighth lens is φ8. The optical power of the lenses satisfies the following conditions:

[0007] -0.738 < φ1 / φ < -0.447;

[0008] -0.233 < φ2 / φ < 0.000;

[0009] 0.000 < φ3 / φ < 0.204;

[0010] 0.382 < φ4 / φ < 0.616;

[0011] -0.480 < φ56 / φ < -0.165;

[0012] 0.448 < φ7 / φ < 0.761;

[0013] 0.000 < φ8 / φ < 0.214.

[0014] Preferably, the refractive index of the first lens is n1, the refractive index of the second lens is n2, the refractive index of the third lens is n3, the refractive index of the fourth lens is n4, the refractive index of the fifth lens is n5, the refractive index of the sixth lens is n6, the refractive index of the seventh lens is n7, and the refractive index of the eighth lens is n8, and the refractive indexes satisfy the following condition:

[0015] 1.55≤n1≤1.74;

[0016] 1.50≤n²≤1.71;

[0017] 1.65≤n³≤1.90;

[0018] 1.62≤n4≤1.78;

[0019] 1.54≤n5≤1.70;

[0020] 1.71≤n6≤1.86;

[0021] 1.43≤n7≤1.55;

[0022] 1.74≤n8≤2.02.

[0023] Preferably, the dispersion coefficient of the first lens is v1, the dispersion coefficient of the second lens is v2, the dispersion coefficient of the third lens is v3, the dispersion coefficient of the fourth lens is v4, the dispersion coefficient of the fifth lens is v5, the dispersion coefficient of the sixth lens is v6, the dispersion coefficient of the seventh lens is v7, and the dispersion coefficient of the eighth lens is v8, wherein the dispersion coefficients satisfy the following condition:

[0024] 19.30≤v1≤34.05;

[0025] 56.39≤v2≤95.00;

[0026] 55.20≤v3≤61.00;

[0027] 21.02≤v4≤29.32;

[0028] 37.11≤v5≤69.34;

[0029] 18.63≤v6≤26.38;

[0030] 80.61≤v7≤95.00;

[0031] 43.19≤v8≤95.00.

[0032] Preferably, both the first lens and the eighth lens satisfy the aspherical formula:

[0033]

[0034] Where Z is the sag of the aspherical surface, c is the fundamental curvature at the vertex, k is the conic section constant, r is the radial coordinate perpendicular to the optical axis, and a i a is the coefficient of the higher-order term. i r 2i For aspherical surfaces, the term is of higher order.

[0035] A large-aperture automotive lens includes the aforementioned high-pixel automotive lens module and a lens barrel for assembling the automotive lens module.

[0036] The beneficial effects of this invention are:

[0037] The present invention provides a high-pixel automotive lens module, which, through the arrangement of the lens module, achieves good image quality and few aberrations, thereby having high resolution and a large aperture. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0039] Figure 2 This is a graph showing the spherical aberration curve of Embodiment 1 of the present invention;

[0040] Figure 3 This is an MTF curve diagram of Embodiment 1 of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0042] Figure 5 This is a graph showing the spherical aberration curve of Embodiment 2 of the present invention;

[0043] Figure 6 This is an MTF curve diagram of Embodiment 2 of the present invention;

[0044] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0045] Figure 8 This is a graph showing the spherical aberration curve of Embodiment 3 of the present invention;

[0046] Figure 9 This is an MTF curve diagram of Embodiment 3 of the present invention.

[0047] exist Figures 1 to 9 The reference numerals in the figures include:

[0048] 1-First lens, 2-Second lens, 3-Third lens, 4-Fourth lens, 5-Fifth lens, 6-Sixth lens, 7-Seventh lens, 8-Eighth lens. Detailed Implementation

[0049] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0050] This embodiment provides a high-pixel automotive lens module and lens, such as Figures 1 to 9 It includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, and an eighth lens 8 arranged sequentially from the object side to the image side along the optical axis; the first lens 1 has a negative optical power, the second lens 2 has a negative optical power, the third lens 3 has a positive optical power, the fourth lens 4 has a positive optical power, the fifth lens 5 and the sixth lens 6 are cemented together and have a negative optical power, the seventh lens 7 has a positive optical power, and the eighth lens 8 has a positive optical power.

[0051] In this configuration, the first lens 1 and the eighth lens 8 are both aspherical glass lenses, while the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, and the seventh lens 7 are all spherical glass lenses. Furthermore, the object-side surface of the first lens 1 is convex, and the image-side surface of the first lens 1 is concave; the object-side surface of the second lens 2 is concave, and the image-side surface of the second lens 2 is convex; the object-side surface of the third lens 3 is concave, and the image-side surface of the third lens 3 is convex; the object-side surface of the fourth lens 4 is convex, and the image-side surface of the fourth lens 4 is convex; the object-side surface of the fifth lens 5 is convex, and the image-side surface of the fifth lens 5 is convex; the object-side surface of the sixth lens 6 is concave, and the image-side surface of the sixth lens 6 is concave; the object-side surface of the seventh lens 7 is convex, and the image-side surface of the seventh lens 7 is convex; and the object-side surface of the eighth lens 8 is concave, and the image-side surface of the eighth lens 8 is convex.

[0052] Furthermore, the structural design of the lens module in this embodiment can improve the image quality of the lens, reduce aberrations, lower sensitivity, and reasonably allocate the optical power of the lens, allowing light to propagate smoothly without excessive deflection on any surface.

[0053] The optical power allocation in this embodiment is as follows: the optical power of the lens module is φ, the optical power of the first lens 1 is φ1, the optical power of the second lens 2 is φ2, the optical power of the third lens 3 is φ3, the optical power of the fourth lens 4 is φ4, the optical power of the cemented combination of the fifth lens 5 and the sixth lens 6 is φ56, the optical power of the seventh lens 7 is φ7, and the optical power of the eighth lens 8 is φ8. The optical power of the lenses satisfies the following conditions:

[0054] -0.738 < φ1 / φ < -0.447;

[0055] -0.233 < φ2 / φ < 0.000;

[0056] 0.000 < φ3 / φ < 0.204;

[0057] 0.382 < φ4 / φ < 0.616;

[0058] -0.480 < φ56 / φ < -0.165;

[0059] 0.448 < φ7 / φ < 0.761;

[0060] 0.000 < φ8 / φ < 0.214.

[0061] The refractive index of the first lens 1 is n1, the refractive index of the second lens 2 is n2, the refractive index of the third lens 3 is n3, the refractive index of the fourth lens 4 is n4, the refractive index of the fifth lens 5 is n5, the refractive index of the sixth lens 6 is n6, the refractive index of the seventh lens 7 is n7, and the refractive index of the eighth lens 8 is n8. The refractive indices satisfy the following condition:

[0062] 1.55≤n1≤1.74;

[0063] 1.50≤n²≤1.71;

[0064] 1.65≤n³≤1.90;

[0065] 1.62≤n4≤1.78;

[0066] 1.54≤n5≤1.70;

[0067] 1.71≤n6≤1.86;

[0068] 1.43≤n7≤1.55;

[0069] 1.74≤n8≤2.02.

[0070] The dispersion coefficients of the first lens 1 are v1, the second lens 2 is v2, the third lens 3 is v3, the fourth lens 4 is v4, the fifth lens 5 is v5, the sixth lens 6 is v6, the seventh lens 7 is v7, and the eighth lens 8 is v8. These dispersion coefficients satisfy the following condition:

[0071] 19.30≤v1≤34.05;

[0072] 56.39≤v2≤95.00;

[0073] 55.20≤v3≤61.00;

[0074] 21.02≤v4≤29.32;

[0075] 37.11≤v5≤69.34;

[0076] 18.63≤v6≤26.38;

[0077] 80.61≤v7≤95.00;

[0078] 43.19≤v8≤95.00.

[0079] Therefore, by rationally allocating the optical power of the lens as described above, and matching it with a suitable refractive index and Abbe number, it is helpful to correct system aberrations and improve image quality.

[0080] Example 1:

[0081] like Figures 1 to 3 The diagram shown is a structural schematic of the lens module in this embodiment, wherein each lens satisfies the following table:

[0082] Table 1. Optical power, refractive index, and dispersion coefficient values ​​of lenses 1 through 8.

[0083]

[0084] Specifically, the optical physical parameters of the first lens 1 to the eighth lens 8 in this embodiment are shown in Table 2 below:

[0085] Table 2 Optical physical parameters of lens 1 to lens 8

[0086]

[0087]

[0088] The surface numbering is based on the surface sequence of each lens. For example, surface number "S1" represents the object-side surface of the first lens 1, surface number "S2" represents the image-side surface of the first lens 1, "S3" represents the object-side surface of the second lens 2, surface number "S4" represents the image-side surface of the second lens 2, and so on. "STO" represents the aperture stop of the lens. The radius of curvature represents the degree of curvature of the lens surface. A positive value indicates that the surface bends towards the object surface with the center closer to the image surface, while a negative value indicates that the surface bends towards the image surface with the center closer to the object surface. "PL" indicates that the surface is flat, and the radius of curvature is... The value is infinity; the thickness represents the central axial distance from the current surface to the next surface. Due to the different number of digits in the values ​​of each parameter, there will be focusing errors. Therefore, the thickness of the 19th surface can vary slightly. The value can be adjusted as needed to achieve a clear focus; the material (nd) represents the refractive index, which is the ability of the material between the current surface and the next surface to deflect light. A space indicates that the current position is air and the refractive index is 1; the material (vd) represents the Abbe number, which is the dispersion characteristic of the material between the current surface and the next surface to light. A space indicates that the current position is air; the half-diameter represents the half-aperture of the lens.

[0089] In this embodiment, both the first lens 1 and the eighth lens 8 are aspherical glass lenses, satisfying the following aspherical formula:

[0090]

[0091] Where Z is the sag of the aspherical surface, c is the fundamental curvature at the vertex, k is the conic section constant, r is the radial coordinate perpendicular to the optical axis, and a i a is the coefficient of the higher-order term. i r 2i For aspherical surfaces, the term is of higher order.

[0092] In this embodiment, the aspherical surfaces a of the first lens 1 and the eighth lens 8 i The parameters k and k satisfy the conditions in Table 3:

[0093] Table 3 Aspherical parameters of the first lens 1 and the eighth lens 8

[0094]

[0095] Therefore, this embodiment can achieve the following lens parameters:

[0096] Focal length: 8mm;

[0097] Aperture: F1.6;

[0098] Field of view: 90°;

[0099] Overall optical length: 43mm;

[0100] To achieve the goal of having a large aperture, a large aperture, and high resolution.

[0101] Example 2:

[0102] like Figures 4 to 6 The diagram shown is a schematic diagram of the lens module in this embodiment. The optical power, refractive index, and dispersion coefficient parameters of the lens in this embodiment satisfy the following table:

[0103] Table 4. Optical power, refractive index, and dispersion coefficient values ​​of lenses 1 through 8 (first lens 1 to eighth lens 8)

[0104]

[0105] Specifically, the optical physical parameters of the first lens 1 to the eighth lens 8 in this embodiment are shown in Table 3 below:

[0106] Table 5 Optical physical parameters of lens 1 to lens 8

[0107]

[0108]

[0109] The surface numbering is based on the surface sequence of each lens. For example, surface number "S1" represents the object-side surface of the first lens 1, surface number "S2" represents the image-side surface of the first lens 1, "S3" represents the object-side surface of the second lens 2, surface number "S4" represents the image-side surface of the second lens 2, and so on. "STO" represents the aperture stop of the lens. The radius of curvature represents the degree of curvature of the lens surface. A positive value indicates that the surface bends towards the object surface with the center closer to the image surface, while a negative value indicates that the surface bends towards the image surface with the center closer to the object surface. "PL" indicates that the surface is flat, and the radius of curvature is... The value is infinity; the thickness represents the central axial distance from the current surface to the next surface. Due to the different number of digits in the values ​​of each parameter, there will be focusing errors. Therefore, the thickness of the 19th surface can vary slightly. The value can be adjusted as needed to achieve a clear focus; the material (nd) represents the refractive index, which is the ability of the material between the current surface and the next surface to deflect light. A space indicates that the current position is air and the refractive index is 1; the material (vd) represents the Abbe number, which is the dispersion characteristic of the material between the current surface and the next surface to light. A space indicates that the current position is air; the half-diameter represents the half-aperture of the lens.

[0110] In this embodiment, both the first lens 1 and the eighth lens 8 are aspherical glass lenses, satisfying the following aspherical formula:

[0111]

[0112] Where Z is the sag of the aspherical surface, c is the fundamental curvature at the vertex, k is the conic section constant, r is the radial coordinate perpendicular to the optical axis, and a i a is the coefficient of the higher-order term. i r 2i For aspherical surfaces, the term is of higher order.

[0113] In this embodiment, the aspherical surfaces a of the first lens 1 and the eighth lens 8 i The parameters k and k satisfy the conditions in Table 6:

[0114] Table 6 Aspherical parameters of the first lens 1 and the eighth lens 8

[0115]

[0116] Therefore, this embodiment can achieve the following lens parameters:

[0117] Focal length: 8mm;

[0118] Aperture: F1.6;

[0119] Field of view: 90°;

[0120] Overall optical length: 43mm;

[0121] To achieve the goal of having a large aperture, a large aperture, and high resolution.

[0122] Example 3:

[0123] like Figures 7 to 9 The diagram shows the structure of the lens module in this embodiment. The optical power, refractive index, and dispersion coefficient parameters of the lens in this embodiment satisfy the following table:

[0124] Table 7. Optical power, refractive index, and dispersion coefficient values ​​of lenses 1 through 8 (first lens 1 to eighth lens 8)

[0125]

[0126]

[0127] Specifically, the optical physical parameters of the first lens 1 to the eighth lens 8 in this embodiment are shown in Table 8 below:

[0128] Table 8 Optical physical parameters of lens 1 to lens 8

[0129] Face number Surface radius of curvature thickness Materials (nd) Materials (vd) Half diameter S1 aspherical 13.648 4.389 1.60 20.30 10.612 S2 aspherical 4.726 7.452 6.468 S3 spherical -10.976 2.938 1.60 94.99 6.391 S4 spherical -14.944 0.084 7.012 S5 spherical -22.594 3.503 1.85 60.00 7.011 S6 spherical -18.156 0.464 7.454 S7 spherical 14.496 4.401 1.67 22.02 7.120 S8 spherical -45.357 2.702 6.558 STO spherical PL -0.083 4.331 S10 spherical 10.135 2.992 1.65 43.64 4.287 S11 spherical -11.393 0.995 1.76 19.63 4.015 S12 spherical 7.394 0.080 3.566 S13 spherical 7.006 3.384 1.49 95.00 3.582 S14 spherical 313.095 0.346 3.399 S15 spherical PL 2.500 3.400 S16 aspherical 40.520 3.043 1.93 95.00 4.077 S17 aspherical 51.835 1.898 4.988 S18 spherical PL 0.900 1.52 64.20 5.690 S19 spherical PL 0.952 5.865

[0130] The surface numbering is based on the surface sequence of each lens. For example, surface number "S1" represents the object-side surface of the first lens 1, surface number "S2" represents the image-side surface of the first lens 1, "S3" represents the object-side surface of the second lens 2, surface number "S4" represents the image-side surface of the second lens 2, and so on. "STO" represents the aperture stop of the lens. The radius of curvature represents the degree of curvature of the lens surface. A positive value indicates that the surface bends towards the object surface with the center closer to the image surface, while a negative value indicates that the surface bends towards the image surface with the center closer to the object surface. "PL" indicates that the surface is flat, and the radius of curvature is... The value is infinity; the thickness represents the central axial distance from the current surface to the next surface. Due to the different number of digits in the values ​​of each parameter, there will be focusing errors. Therefore, the thickness of the 19th surface can vary slightly. The value can be adjusted as needed to achieve a clear focus; the material (nd) represents the refractive index, which is the ability of the material between the current surface and the next surface to deflect light. A space indicates that the current position is air and the refractive index is 1; the material (vd) represents the Abbe number, which is the dispersion characteristic of the material between the current surface and the next surface to light. A space indicates that the current position is air; the half-diameter represents the half-aperture of the lens.

[0131] In this embodiment, both the first lens 1 and the eighth lens 8 are aspherical glass lenses, satisfying the following aspherical formula:

[0132]

[0133] Where Z is the sag of the aspherical surface, c is the fundamental curvature at the vertex, k is the conic section constant, r is the radial coordinate perpendicular to the optical axis, and a i a is the coefficient of the higher-order term. i r 2i For aspherical surfaces, the term is of higher order.

[0134] In this embodiment, the aspherical surfaces a of the first lens 1 and the eighth lens 8 i The parameters k and k satisfy the conditions in Table 9:

[0135] Table 9 Aspherical parameters of the first lens 1 and the eighth lens 8

[0136]

[0137]

[0138] Therefore, this embodiment can achieve the following lens parameters:

[0139] Focal length: 8mm;

[0140] Aperture: F1.6;

[0141] Field of view: 90°;

[0142] Overall optical length: 42.9mm;

[0143] To achieve the goal of having a large aperture, a large aperture, and high resolution.

[0144] Example 4:

[0145] This embodiment provides a large-aperture automotive lens, including a lens barrel and a high-pixel automotive lens module assembled in the lens barrel. The optical power of the first to eighth lenses of the high-pixel automotive lens module satisfies the following:

[0146] -0.738 < φ1 / φ < -0.447;

[0147] -0.233 < φ2 / φ < 0.000;

[0148] 0.000 < φ3 / φ < 0.204;

[0149] 0.382 < φ4 / φ < 0.616;

[0150] -0.480 < φ56 / φ < -0.165;

[0151] 0.448 < φ7 / φ < 0.761;

[0152] 0.000 < φ8 / φ < 0.214.

[0153] The refractive index satisfies:

[0154] 1.55≤n1≤1.74;

[0155] 1.50≤n²≤1.71;

[0156] 1.65≤n³≤1.90;

[0157] 1.62≤n4≤1.78;

[0158] 1.54≤n5≤1.70;

[0159] 1.71≤n6≤1.86;

[0160] 1.43≤n7≤1.55;

[0161] 1.74≤n8≤2.02.

[0162] The dispersion coefficient satisfies:

[0163] 19.30≤v1≤34.05;

[0164] 56.39≤v2≤95.00;

[0165] 55.20≤v3≤61.00;

[0166] 21.02≤v4≤29.32;

[0167] 37.11≤v5≤69.34;

[0168] 18.63≤v6≤26.38;

[0169] 80.61≤v7≤95.00;

[0170] 43.19≤v8≤95.00.

[0171] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A high-pixel automotive lens module, characterized in that: It includes 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 arranged sequentially from the object side to the image side along the optical axis; the first lens is a concave-convex lens with negative optical power, the second lens is a concave-convex lens with negative optical power, the third lens is a concave-convex lens with positive optical power, the fourth lens is a convex-convex lens with positive optical power, the fifth lens is cemented with the sixth lens and has negative optical power, the fifth lens is a convex-convex lens, the sixth lens is a concave-concave lens, the seventh lens is a convex-convex lens with positive optical power, and the eighth lens is a concave-convex lens with positive optical power; the first lens and the eighth lens are both aspherical glass lenses, and the second, third, fourth, fifth, sixth, and seventh lenses are all spherical glass lenses.

2. The high-pixel vehicle-mounted lens module according to claim 1, characterized in that: The object-side surface of the first lens is convex, and the image-side surface of the first lens is concave; the object-side surface of the second lens is concave, and the image-side surface of the second lens is convex; the object-side surface of the third lens is concave, and the image-side surface of the third lens is convex; the object-side surface of the eighth lens is convex, and the image-side surface of the eighth lens is concave.

3. The high-pixel automotive lens module according to claim 1, characterized in that: The optical power of the lens module is φ, the optical power of the first lens is φ1, the optical power of the second lens is φ2, the optical power of the third lens is φ3, the optical power of the fourth lens is φ4, the optical power of the cemented fifth and sixth lenses is φ56, the optical power of the seventh lens is φ7, and the optical power of the eighth lens is φ8. The optical power of the lenses satisfies the following condition: -0.738 < φ1 / φ < -0.447; -0.233 < φ2 / φ < 0.000; 0.000 < φ3 / φ < 0.204; 0.382 < φ4 / φ < 0.616; -0.480 < φ56 / φ < -0.165; 0.448 < φ7 / φ < 0.761; 0.000 < φ8 / φ < 0.

214.

4. The high-pixel automotive lens module according to claim 1, characterized in that: The first lens has a refractive index of n1, the second lens has a refractive index of n2, the third lens has a refractive index of n3, the fourth lens has a refractive index of n4, the fifth lens has a refractive index of n5, the sixth lens has a refractive index of n6, the seventh lens has a refractive index of n7, and the eighth lens has a refractive index of n8. The refractive indices satisfy the following condition: 1.55≤n1≤1.74； 1.50≤n2≤1.71； 1.65≤n3≤1.90； 1.62≤n4≤1.78； 1.54≤n5≤1.70； 1.71≤n6≤1.86； 1.43≤n7≤1.55； 1.74≤n8≤2.02。 5. The high-pixel automotive lens module according to claim 1, characterized in that: The dispersion coefficient of the first lens is v1, the dispersion coefficient of the second lens is v2, the dispersion coefficient of the third lens is v3, the dispersion coefficient of the fourth lens is v4, the dispersion coefficient of the fifth lens is v5, the dispersion coefficient of the sixth lens is v6, the dispersion coefficient of the seventh lens is v7, and the dispersion coefficient of the eighth lens is v8. The dispersion coefficients satisfy the following condition: 19.30≤v1≤34.05； 56.39≤v2≤95.00； 55.20≤v3≤61.00； 21.02≤v4≤29.32； 37.11≤v5≤69.34； 18.63≤v6≤26.38； 80.61≤v7≤95.00； 43.19≤v8≤95.00。 6. The high-pixel automotive lens module according to claim 1, characterized in that: Both the first lens and the eighth lens satisfy the aspherical formula: Where Z is the aspherical elevation, c is the fundamental curvature at the vertex, k is the conic section constant, and r is the radial coordinate perpendicular to the optical axis. , , , , , For higher-order terms, , , , , , For aspherical surfaces, the term is of higher order.

7. A large-aperture vehicle-mounted lens, characterized in that: It includes the high-pixel automotive lens module as described in any one of claims 1 to 6, and a lens barrel for assembling the automotive lens module.

Images