All-glass vehicle-mounted optical system and camera module

Abstract

The invention discloses an all-glass vehicle-mounted optical system and a camera module, the all-glass vehicle-mounted optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, the focal power of the first lens is negative, the focal power of the second lens is positive, the focal power of the third lens is positive, and the focal power of the fourth lens is negative. The fourth lens and the fifth lens are glued to form a combined lens, the focal power of the combined lens is positive or negative, and the focal power of the sixth lens is negative and is-11 mmlt; f1lt; the thickness is-6.5 mm, and the thickness is 10.0 mmlt; f2lt; f2lt; the thickness is 19.0 mm, and the thickness is 15.0 mmlt; f3lt; f3t; the thickness is 20.0 mm, and the thickness is-58.0 mmlt; f61t; f61t; the focal length of each lens is reasonably configured, the infrared confocal medium-long focal lens satisfies a large field angle, the effective diameter of a component is limited, the size of the whole optical system is controlled, the incident angle of light is adjusted, the aberration of the system is effectively corrected, and the resolution of the system is improved. The all-glass vehicle-mounted optical system has the advantages of large target surface, small size, high resolution, high relative illumination and high imaging pixel, the uniformity of image illumination and the imaging definition are effectively improved, the head size of the lens is small, the shooting view field range is wide, and the production cost is low.

Description

Technical Field

[0001] This invention relates to the field of optical lens technology, and more particularly to an all-glass automotive optical system and camera module. Background Technology

[0002] With the continuous development of intelligent driving technology, in-vehicle applications are emerging in an endless stream. As a core component of intelligent driving systems, in-vehicle cameras are crucial to the safety of vehicles using such systems. Existing in-vehicle cameras use either small-aperture or large-aperture lenses. Small-aperture lenses cannot fully meet the shooting needs in low-light environments, while large-aperture lenses can meet the shooting needs in low-light environments, but the current large-aperture in-vehicle cameras have relatively short focal lengths and cannot achieve infrared co-focusing, resulting in somewhat subpar image quality. Summary of the Invention

[0003] The purpose of this invention is to provide an all-glass automotive optical system to solve the problems of existing large-aperture automotive lenses having short focal lengths and being unable to achieve infrared co-focus, resulting in suboptimal shooting performance.

[0004] This invention is achieved through the following technical solution: The all-glass automotive optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical axis from the object plane to the image plane, with an aperture stop provided between the second lens and the third lens; The first lens has a negative optical power, its object side is convex, and its image side is concave. The second lens has a positive optical power and its object-side surface is convex. The third lens has a positive optical power, its object side is concave, and its image side is convex. The fourth lens and the fifth lens are cemented together to form a combined lens, and the optical power of the combined lens is positive or negative; The sixth lens has a negative optical power and its object side is concave. This all-glass automotive optical system satisfies the following relationship: -11mm <f1<-6.5mm; 10.0mm <f2<19.0mm; 15.0mm <f3<20.0mm; -58.0mm <f6<-8.0mm; Where f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, and f6 is the focal length of the sixth lens.

[0005] Furthermore, this all-glass automotive optical system also satisfies the following relationship: -9.0 <f1 / f<-1.5; 2.0 <f2 / f<16.0; 2.5 <f3 / f<18.0; -12.0 <f6 / f<-1.2; Where f is the total focal length of the all-glass vehicle optical system, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, and f6 is the focal length of the sixth lens.

[0006] Furthermore, the total optical length (TTL) of this all-glass vehicle optical system is ≤28 mm.

[0007] Furthermore, this all-glass automotive optical system also satisfies the following relationship: D1 / (Fno*Ymax)<1.2; Where D1 is the maximum effective light transmission diameter of the first lens, Fno is the aperture of the all-glass vehicle optical system, and Ymax is the maximum image circle radius of the all-glass vehicle optical system.

[0008] Furthermore, this all-glass automotive optical system also satisfies the following relationship: 1 <R3 / f<3; 7.5 <R1 / f<8.5; Where R1 is the object curvature of the first lens, R3 is the object curvature of the second lens, and f is the total focal length of the all-glass vehicle optical system.

[0009] Furthermore, this all-glass automotive optical system also satisfies the following relationship: Nd3 < 2.35; Wherein, Nd3 is the refractive index of the third lens.

[0010] Furthermore, this all-glass automotive optical system also satisfies the following relationship: H / f < 1.4; Where H is the image height of the all-glass vehicle optical system, and f is the total focal length of the all-glass vehicle optical system.

[0011] Furthermore, this all-glass automotive optical system also satisfies the following relationship: TTL / f < 5.3; Where f is the total focal length of the all-glass vehicle optical system, and TTL is the total optical length of the all-glass vehicle optical system.

[0012] Furthermore, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are spherical lenses; And / or may also include a filter, a chip protection lens, and an imaging surface, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the filter, the chip protection lens, and the imaging surface are arranged sequentially from the object plane to the image plane along the optical axis.

[0013] To address the issue that existing large-aperture automotive lenses have relatively short focal lengths and therefore lack sufficient image quality, this invention provides an all-glass automotive optical system. Correspondingly, it provides a camera module, which includes at least an optical lens, within which the aforementioned all-glass automotive optical system is installed.

[0014] The advantages of this technical solution lie in the fact that by configuring the all-glass vehicle optical system into a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, the focal length of each lens is reasonably configured. The infrared confocal medium-long telephoto lens satisfies a large field of view while limiting the effective diameter of the components, controlling the size of the entire optical system, and adjusting the incident angle of light to effectively correct system aberrations. This gives the all-glass vehicle optical system the advantages of a large target surface, small size, high resolution, high relative illumination, and high imaging pixel count. It effectively improves the uniformity of illumination and image clarity, and the lens head size is small, the field of view can be widened, and the production cost is low. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] To more clearly illustrate the technical solution in Embodiment 1 of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the all-glass vehicle-mounted optical system in Embodiment 1 of the present invention; Figure 2 These are the field curvature curve and distortion curve of the all-glass vehicle-mounted optical system in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the all-glass vehicle-mounted optical system in Embodiment 2 of the present invention; Figure 4 These are the field curvature curve and distortion curve of the all-glass vehicle-mounted optical system in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the all-glass vehicle-mounted optical system in Embodiment 3 of the present invention; Figure 6These are the field curvature curve and distortion curve of the all-glass vehicle-mounted optical system in Embodiment 3 of the present invention. Detailed Implementation

[0018] The technical solution of Embodiment 1 of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: As Figure 1-2 As shown, the camera module includes at least an optical lens (not shown in the figure), and the optical lens is equipped with an all-glass vehicle optical system. The all-glass vehicle optical system includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5 and a sixth lens 6 arranged sequentially along the optical axis from the object plane to the image plane. An aperture stop 7 is provided between the second lens 2 and the third lens 3. The first lens 1 has a negative optical power, its object side is convex, and its image side is concave. The second lens 2 has a positive optical power and its object-side surface is convex. The third lens 3 has a positive optical power, its object side is concave, and its image side is convex. The fourth lens 4 has a positive optical power, and its object-side surface is convex, as is its image-side surface. The fifth lens 5 has a negative optical power, its object side is concave, and its image side is convex. The sixth lens 6 has a negative optical power, its object side is concave, and its image side is convex. The fourth lens 4 and the fifth lens 5 are cemented together to form a combined lens, and the optical power of the combined lens is positive. This all-glass automotive optical system satisfies the following relationship: -11mm <f1<-6.5mm; 10.0mm <f2<19.0mm; 15.0mm <f3<20.0mm; -58.0mm <f6<-8.0mm; Where f1 is the focal length of the first lens 1, f2 is the focal length of the second lens 2, f3 is the focal length of the third lens 3, and f6 is the focal length of the sixth lens 6.

[0020] The present invention provides an embodiment to solve the problem that the existing large-aperture vehicle-mounted lens has a short focal length and cannot be infrared confocal, and the shooting effect is still lacking. The all-glass vehicle-mounted optical system is mainly configured to include a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a sixth lens 6. The optical power of the first lens 1 is negative, its object side is convex, and its image side is concave. The optical power of the second lens 2 is positive, its object side is convex. The optical power of the third lens 3 is positive, its object side is concave, and its image side is convex. The fourth lens 4 and the fifth lens 5 are glued together to form a combined lens, and the optical power of the combined lens is positive. The optical power of the sixth lens 6 is negative, its object side is concave, and -11 mm < f1 < -6.5 mm, 10.0 mm < f2 < 19.0 mm, 15.0 mm < f3 < 20.0 mm, -58.0 mm < f6 < -8.0 mm. The focal lengths of each lens are reasonably configured. The medium and long focal length lens with infrared confocal satisfies the large field angle while restricting the effective diameter of the components, controlling the size of the entire optical system, and adjusting the light incident angle, effectively correcting the system aberration, making the all-glass vehicle-mounted optical system have the advantages of a large target surface, small volume, high resolution, high relative illumination, and high imaging pixels, effectively improving the illumination uniformity and imaging clarity of the picture, and the lens has a small head size, a wide shooting field range, and low production cost.

[0021] In Embodiment 1 of the present invention, the all-glass vehicle-mounted optical system also satisfies the following relationship: -9.0 < f1 / f < -1.5; 2.0 < f2 / f < 16.0; 2.5 < f3 / f < 18.0; -12.0 < f6 / f < -1.2; Where f is the total focal length of the all-glass vehicle-mounted optical system, specifically referring to the image-side focal length, f1 is the focal length of the first lens 1, f2 is the focal length of the second lens 2, f3 is the focal length of the third lens 3, and f6 is the focal length of the sixth lens 6.

[0022] The above settings, by defining -9.0 < f1 / f < -1.5, 2.0 < f2 / f < 16.0, 2.5 < f3 / f < 18.0, -12.0 < f6 / f < -1.2, enable the all-glass vehicle-mounted optical system to obtain a reasonable light deflection angle, effectively reducing the component tolerance sensitivity and improving the system aberration.

[0023] In Embodiment 1 of the present invention, the optical total length TTL of the all-glass vehicle-mounted optical system ≤ 28 mm. Wherein, the optical total length TTL of the all-glass vehicle-mounted optical system refers to the distance from the object side of the first lens 1 to the imaging surface 10.

[0024] In Embodiment 1 of the present invention, the all-glass vehicle-mounted optical system also satisfies the following relationship: D1 / (Fno*Ymax)<1.2; Where D1 is the maximum effective optical diameter of the first lens 1, Fno is the aperture of the all-glass vehicle optical system, and Ymax is the maximum image circle radius of the all-glass vehicle optical system.

[0025] The above limitations enable the all-glass automotive optical system to meet the requirements of miniaturization design.

[0026] In Embodiment 1 of the present invention, the all-glass vehicle optical system also satisfies the following relationship: 1 <R3 / f<3; 7.5 <R1 / f<8.5; Wherein, R1 is the object curvature of the first lens 1, R3 is the object curvature of the second lens 2, and f is the total focal length of the all-glass vehicle optical system.

[0027] The above settings increase the distortion of the all-glass vehicle optical system within a small angle range by controlling the curvature of the object-side surface of the first lens 1 and the object-side surface of the second lens 2, thereby meeting the special distortion requirements of the vehicle camera system.

[0028] In Embodiment 1 of the present invention, the all-glass vehicle optical system also satisfies the following relationship: Nd3 < 2.35; Wherein, Nd3 is the refractive index of the third lens 3.

[0029] The aforementioned limitations smooth out the light, reducing primary and various advanced aberrations produced by the all-glass automotive optical system and improving resolution.

[0030] In Embodiment 1 of the present invention, the all-glass vehicle optical system also satisfies the following relationship: H / f < 1.4; Where H is the image height of the all-glass vehicle optical system, and f is the total focal length of the all-glass vehicle optical system.

[0031] The above limitations are beneficial to the resolution of the all-glass vehicle optical system, thus improving its resolving power.

[0032] In Embodiment 1 of the present invention, the all-glass vehicle optical system also satisfies the following relationship: TTL / f < 5.3; Where f is the total focal length of the all-glass vehicle optical system, and TTL is the total optical length of the all-glass vehicle optical system.

[0033] The above limitations restrict the length of the lens while keeping the total focal length fixed.

[0034] In Embodiment 1 of the present invention, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens 6 are all spherical lenses.

[0035] In Embodiment 1 of the present invention, a filter 8, a chip protection lens 9, and an imaging surface 10 are also included. The first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the filter 8, the chip protection lens 9, and the imaging surface 10 are arranged sequentially from the object plane to the image plane along the optical axis. Light from the object passes through each lens in sequence and is finally imaged on the imaging surface 10.

[0036] The object-side surface of the first lens 1 is defined as S1, and the image-side surface is defined as S2; The object-side surface of the second lens 2 is defined as S3, and the image-side surface is defined as S4; The object side of the third lens 3 is defined as S6, and the image side is defined as S7. The object-side surface of the fourth lens 4 is defined as S8; The cemented surface of the fourth lens 4 and the fifth lens 5 is defined as S9; The image-side surface of the fifth lens 5 is defined as S10; The object side of the sixth lens 6 is defined as S11, and the image side is defined as S12; The object side of filter 8 is defined as S13, and the image side is defined as S14; The object side of the chip protection lens 9 is defined as S15, and the image side is defined as S16. The imaging side of imaging plane 10 is defined as S17.

[0037] Table 1 shows the specific values ​​of the surface type, radius of curvature, thickness, refractive index, and Abbe number of the first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, filter 8, chip protection lens 9, and imaging surface 10 in Embodiment 1 of the present invention.

[0038] Table 1 Face number Surface type Radius of curvature (mm) Thickness (mm) Refractive index Abbe number OBJ flat endless endless S1 spherical 47.681 1.25 1.51 64.2 S2 spherical 4.134 3.501 S3 spherical 14.34 3.911 2.00 25.43 S4 spherical 177.024 0.433 STO flat endless 0.388 S6 spherical -10.181 4.916 1.91 35.2 S7 spherical -7.685 0.100 S8 spherical 7.609 3.596 1.59 68.3 S9 spherical -3.896 3.263 1.94 17.9 S10 spherical -6.361 1.418 S11 spherical -5.747 1.001 1.68 31.1 S12 spherical -23.343 1.406 S13 flat endless 0.500 1.51 64.2 S14 flat endless 1.871 S15 flat endless 0.400 1.51 64.2 S16 flat endless 0.273 S17 flat endless / Table 2 shows the specific values ​​of f1, f2, f3, f6, f, D1, FNO, Ymax, R3, and R1 in Embodiment 1 of the present invention.

[0039] Table 2 f1 f2 f3 f6 f D1 FNO Ymax R3 R1 -8.812 15.265 17.601 -11.245 5.391 5.152 1.7 5.6 14.34 47.681 Table 3 shows the specific values ​​of f1 / f, f2 / f, f3 / f, f6 / f, D1 / (Fno*Ymax), R3 / f, R1 / f, H / f, and TTL / f in Embodiment 1 of the present invention.

[0040] Table 3 f1 / f f2 / f f3 / f f6 / f D1 / (Fno*Ymax) R3 / f R1 / f H / f TTL / f -1.635 2.832 3.265 -2.086 0.541 2.660 8.845 1.368 5.236 Example 2: As Figure 3-4As shown, the difference between this and Embodiment 1 is that the fourth lens 4 has a negative optical power, its object side is convex, and its image side is concave, while the fifth lens 5 has a positive optical power, its object side is convex, and its image side is convex.

[0041] The specific values ​​of the surface type, radius of curvature, thickness, refractive index, and Abbe number of the first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, filter 8, chip protection lens 9, and imaging surface 10, as well as the specific values ​​of f1, f2, f3, f6, f, D1, FNO, Ymax, R3, and R1, are all different from those in Example 1.

[0042] Table 4 shows the specific values ​​of the surface type, radius of curvature, thickness, refractive index, and Abbe number of the first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, filter 8, chip protection lens 9, and imaging surface 10 in Embodiment 2 of the present invention.

[0043] Table 4 Face number Surface type Radius of curvature (mm) Thickness (mm) Refractive index Abbe number OBJ flat endless endless S1 spherical 68.716 2.025 1.51 64.2 S2 spherical 4.272 3.020 S3 spherical 16.589 1.800 2.00 25.4 S4 spherical 138.080 2.065 STO flat endless 0.278 S6 spherical -14.573 5.948 1.91 35.2 S7 spherical -9.582 0.100 S8 spherical 6.895 2.933 1.94 17.9 S9 spherical 3.864 2.372 1.59 68.3 S10 spherical -12.022 1.045 S11 spherical -5.582 2.329 1.68 31.1 S12 spherical -7.608 3.338 S13 flat endless 0.300 1.51 64.2 S14 flat endless 0.231 S15 flat endless 0.400 1.51 64.2 S16 flat endless 0.050 S17 flat endless / Table 5 shows the specific values ​​of f1, f2, f3, f6, f, D1, FNO, Ymax, R3, and R1 in Embodiment 2 of the present invention.

[0044] Table 5 f1 f2 f3 f6 f D1 FNO Ymax R3 R1 -8.875 18.530 19.432 -57.067 5.416 5.591 1.7 5.23 16.589 68.716 Table 6 shows the specific values ​​of f1 / f, f2 / f, f3 / f, f6 / f, D1 / (Fno*Ymax), R3 / f, R1 / f, H / f, and TTL / f in Embodiment 1 of the present invention.

[0045] Table 6 f1 / f f2 / f f3 / f f6 / f D1 / (Fno*Ymax) R3 / f R1 / f H / f TTL / f -1.639 3.421 3.588 -10.537 0.629 3.063 12.688 1.362 5.213 Example 3: As Figure 5-6 As shown, the difference between this embodiment and Embodiment 1 is that the image-side surface of the sixth lens 6 is concave.

[0046] The specific values ​​of the surface type, radius of curvature, thickness, refractive index, and Abbe number of the first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, filter 8, chip protection lens 9, and imaging surface 10, as well as the specific values ​​of f1, f2, f3, f6, f, D1, FNO, Ymax, R3, and R1, are all different from those in Example 1.

[0047] Table 7 shows the specific values ​​of the surface type, radius of curvature, thickness, refractive index, and Abbe number of the first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, filter 8, chip protection lens 9, and imaging surface 10 in Embodiment 3 of the present invention.

[0048] Table 7 Face number Surface type Radius of curvature (mm) Thickness (mm) Refractive index Abbe number OBJ flat endless endless S1 spherical 40.993 1.250 1.51 64.2 S2 spherical 4.567 5.541 S3 spherical 11.243 1.917 2.00 25.4 S4 spherical 138.080 1.032 STO spherical endless 0.310 S6 spherical -12.914 5.713 1.91 35.2 S7 flat -8.528 0.100 S8 spherical 7.378 2.717 1.59 68.3 S9 spherical -4.371 4.158 1.94 17.9 S10 spherical -6.712 0.811 S11 spherical -6.329 0.700 1.68 31.1 S12 spherical 54.436 3.000 S13 spherical endless 0.300 1.51 64.2 S14 flat endless 0.206 S15 flat endless 0.400 1.51 64.2 S16 flat endless 0.050 S17 flat endless / Table 8 shows the specific values ​​of f1, f2, f3, f6, f, D1, FNO, Ymax, R3, and R1 in Embodiment 3 of the present invention.

[0049] Table 8 f1 f2 f3 f6 f D1 FNO Ymax R3 R1 -10.024 12.027 16.871 -8.129 5.423 5.723 1.7 5.97 11.243 40.993 Table 9 shows the specific values ​​of f1 / f, f2 / f, f3 / f, f6 / f, D1 / (Fno*Ymax), R3 / f, R1 / f, H / f, and TTL / f in Embodiment 1 of the present invention.

[0050] Table 9 f1 / f f2 / f f3 / f f6 / f D1 / (Fno*Ymax) R3 / f R1 / f H / f TTL / f -1.848 2.218 3.111 -1.499 0.564 2.073 7.560 1.360 5.201 It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of the present invention is limited to these descriptions. Any methods or structures that are similar to or identical to those of the present invention, or any technical deductions or substitutions made based on the concept of the present invention, should be considered as protected by the present invention.

Claims

1. An all-glass automotive optical system, characterized in that, It includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical axis from the object plane to the image plane, with an aperture stop provided between the second lens and the third lens; The first lens has a negative optical power, its object side is convex, and its image side is concave. The second lens has a positive optical power and its object-side surface is convex. The third lens has a positive optical power, its object side is concave, and its image side is convex. The fourth lens and the fifth lens are cemented together to form a combined lens, and the optical power of the combined lens is positive or negative; The sixth lens has a negative optical power and its object side is concave. This all-glass automotive optical system satisfies the following relationship: -11mm <f1<-6.5mm; 10.0mm <f2<19.0mm; 15.0mm <f3<20.0mm; -58.0mm <f6<-8.0mm; Where f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, and f6 is the focal length of the sixth lens.

2. The all-glass vehicle-mounted optical system according to claim 1, characterized in that, This all-glass automotive optical system also satisfies the following relationships: -9.0 <f1 / f<-1.5; 2.0 <f2 / f<16.0; 2.5 <f3 / f<18.0; -12.0 <f6 / f<-1.2; Where f is the total focal length of the all-glass vehicle optical system, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, and f6 is the focal length of the sixth lens.

3. The all-glass vehicle-mounted optical system according to claim 1, characterized in that, The total optical length (TTL) of the all-glass vehicle optical system is ≤28 mm.

4. The all-glass vehicle-mounted optical system according to claim 1, characterized in that, This all-glass automotive optical system also satisfies the following relationships: D1 / (Fno*Ymax)<1.2; Where D1 is the maximum effective light transmission diameter of the first lens, Fno is the aperture of the all-glass vehicle optical system, and Ymax is the maximum image circle radius of the all-glass vehicle optical system.

5. The all-glass automotive optical system according to claim 1, characterized in that, This all-glass automotive optical system also satisfies the following relationships: 1 <R3 / f<3; 7.5 <R1 / f<8.5; Where R1 is the object curvature of the first lens, R3 is the object curvature of the second lens, and f is the total focal length of the all-glass vehicle optical system.

6. The all-glass automotive optical system according to claim 1, characterized in that, This all-glass automotive optical system also satisfies the following relationships: Nd3 < 2.35; Where Nd3 is the refractive index of the third lens.

7. The all-glass vehicle-mounted optical system according to claim 1, characterized in that, This all-glass automotive optical system also satisfies the following relationships: H / f < 1.4; Where H is the image height of the all-glass vehicle optical system, and f is the total focal length of the all-glass vehicle optical system.

8. The all-glass automotive optical system according to claim 1, characterized in that, This all-glass automotive optical system also satisfies the following relationships: TTL / f < 5.3; Where f is the total focal length of the all-glass vehicle optical system, and TTL is the total optical length of the all-glass vehicle optical system.

9. The all-glass automotive optical system according to claim 1, characterized in that, The first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are spherical lenses; And / or may also include a filter, a chip protection lens, and an imaging surface, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the filter, the chip protection lens, and the imaging surface are arranged sequentially from the object plane to the image plane along the optical axis.

10. A camera module, comprising at least an optical lens, characterized in that... The optical lens is equipped with an all-glass vehicle optical system as described in any one of claims 1-9.

Images