Vehicle-mounted around-view lens and vehicle

Abstract

The utility model provides a vehicle-mounted around-view lens and a vehicle, and is based on the technical field of vehicle-mounted lenses, and the vehicle-mounted around-view lens is provided with an object side and an image side which are oppositely arranged along the direction of an optical axis. The vehicle-mounted panoramic lens comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power and a sixth lens with positive focal power which are sequentially arranged from an object side to an image side, the total optical length of the vehicle-mounted looking-around lens is controlled within 15.9 mm, the field angle reaches 203 degrees, and the aperture value is 1.8-2.0; wherein the first lens and the third lens are glass spherical lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic aspheric lenses. According to the scheme, the six lenses are adopted, and the focal power and the shape matching relation of the lenses are reasonably set, so that the vehicle-mounted all-round-view lens which is small in size, large in aperture, low in cost and confocal at high and low temperatures is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted lenses, in particular to a vehicle-mounted surround-view lens and a vehicle. Background Art

[0002] With the continuous development of science and technology and the continuous progress of social development, the role of optical lenses in the automotive field is becoming more and more significant. Among them, fisheye lenses are widely used in surround-view vehicles due to their advantages of large field of view and wide shooting format. At present, the consumer market is developing towards low cost and miniaturization, but many similar products have more lenses and more complex structures. Most of the existing low-cost and simple-structured lenses cannot maintain focus in environments with large temperature differences, and the size of the field of view cannot meet consumer needs. Utility Model Content

[0003] The main purpose of the utility model is to provide a vehicle-mounted surround-view lens and a vehicle, aiming to provide a surround-view fisheye lens with small volume, large aperture, low cost, high and low temperature confocality.

[0004] To achieve the above-mentioned purpose, the utility model provides a vehicle-mounted surround view lens, which has an object side and an image side that are arranged opposite to each other along the optical axis direction, and the vehicle-mounted surround view lens comprises a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with negative optical power, and a sixth lens with positive optical power, which are arranged in sequence from the object side to the image side, so that the total optical length of the vehicle-mounted surround view lens is controlled within 15.9 mm, the field of view angle reaches 203°, and the aperture value is between 1.8 and 2.0;

[0005] The first lens and the third lens are both glass spherical lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic aspherical lenses.

[0006] In one implementation, the vehicle-mounted surround view lens further includes an aperture, and the aperture is disposed between the third lens and the fourth lens.

[0007] In one embodiment, the vehicle-mounted surround view lens further includes a photosensitive chip and a protective glass, wherein the photosensitive chip is disposed on a side of the sixth lens facing the image side, and the protective glass is disposed between the photosensitive chip and the sixth lens to protect the photosensitive chip.

[0008] In one embodiment, the vehicle-mounted surround view lens further includes a filter located on one side of the sixth lens in a direction toward the image side, and the filter is used to filter out stray light in a non-working band.

[0009] In one embodiment, the first lens is a meniscus lens, and its object-side surface is a convex surface;

[0010] The second lens is a concave-convex lens, and its object side surface is convex;

[0011] The third lens is a biconvex lens;

[0012] The fourth lens is a biconvex lens;

[0013] The fifth lens is a biconcave lens;

[0014] The sixth lens is a biconvex lens.

[0015] In one embodiment, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, wherein:

[0016] -6.0<f1<-3.2, -5.2<f2<-2.0, 2.0<f3<6.6, 2.2<f4<5.2, -4.0<f5<-1.2, 2.0<f6<5.0.

[0017] In one embodiment, the refractive index of the first lens is n1 and the dispersion coefficient is v1, the refractive index of the second lens is n2 and the dispersion coefficient is v2, the refractive index of the third lens is n3 and the dispersion coefficient is v3, the focal refractive index of the fourth lens is n4 and the dispersion coefficient is v4, the refractive index of the fifth lens is n5 and the dispersion coefficient is v5, and the refractive index of the sixth lens is n6 and the dispersion coefficient is v6, wherein:

[0018] 1.85≤n1≤2.00, 1.50≤n2≤1.60, 1.90≤n3≤2.05, 1.50≤n4≤1.60, 1.60≤n5≤1.70, 1.50≤n6≤1.60, 20.0≤v1≤40.0, 40.0≤v2≤60.0, 20.0≤v3≤40.0, 40.0≤v4≤60.0, 15.0≤v5≤25.0, 40.0≤v6≤60.0.

[0019] In one implementation, the diameter of the first lens is D1, the effective focal length of the vehicle-mounted surround view lens is EFL, the total optical length of the vehicle-mounted surround view lens is TTL, and the image plane diameter of the vehicle-mounted surround view lens is IC, wherein:

[0020] D1 / TTL<0.65, 5.6mm≤IC≤6.0mm, TTL / EFL≤9.3.

[0021] In one implementation, the combined focal length of the fourth lens and the fifth lens is f45, and the effective focal length of the vehicle-mounted surround view lens is EFL, wherein:

[0022] 25<│f45 / EFL│<50.

[0023] The utility model also provides a vehicle, comprising the above-mentioned vehicle-mounted surround-view lens, wherein the vehicle-mounted surround-view lens has an object side and an image side that are arranged opposite to each other along the optical axis direction, and the vehicle-mounted surround-view lens comprises a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with negative optical power, and a sixth lens with positive optical power, which are arranged in sequence from the object side to the image side, so that the total optical length of the vehicle-mounted surround-view lens is controlled within 15.9 mm, the field of view angle reaches 203°, and the aperture value is between 1.8 and 2.0;

[0024] The first lens and the third lens are both glass spherical lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic aspherical lenses.

[0025] The technical solution provided by the utility model is that by setting the first lens with negative focal power, it is beneficial to the collection of light in the optical system and can effectively increase the field of view; by setting the sixth lens with positive focal power, it bears the larger focal power of the system, changes the propagation direction of the light beam, corrects the aberration of the off-axis field of view, and is more conducive to the imaging of the light beam on the image plane; by setting the second lens, the fourth lens, the fifth lens and the sixth lens as plastic aspheric lenses, the proportion of glass lenses used is greatly reduced, and the cost is reduced; by setting the first lens and the third lens as glass lenses, the aberration is effectively improved, ensuring that it does not defocus under high and low temperature conditions; the light trend of the lens is smooth, while introducing more light, the structure is more compact, and the total length of the lens is controlled within 15.9mm. And by reasonably arranging 4 aspheric lenses, various aberrations are corrected, the edge image quality is improved, and the imaging quality is high. In terms of aperture, the aperture value F satisfies 1.8≤F≤2.0, the lens can also image clearly in weak light, and by reasonably setting the focal length ratio, the lens does not defocus under environmental conditions of -40℃ to +105℃, and the working performance is more stable. The field of view can reach 203°±5%, the field of view is wider, and the data information is more sufficient. By using six lenses and reasonably setting the focal length and shape matching relationship of each lens, a small-volume, large-aperture, low-cost, high-temperature and low-temperature confocal vehicle-mounted surround view lens is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of an embodiment of a vehicle-mounted surround view camera provided by the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the spherical aberration curve of the vehicle-mounted surround view lens;

[0029] Figure 3 for Figure 1 Schematic diagram of the defocus of the vehicle-mounted surround view lens;

[0030] Figure 4 for Figure 1 Schematic diagram of illumination of the vehicle-mounted surround view camera;

[0031] Figure 5 A structural schematic diagram of another embodiment of the vehicle-mounted surround view camera provided by the utility model;

[0032] Figure 6 for Figure 5 Schematic diagram of the spherical aberration curve of the vehicle-mounted surround view lens;

[0033] Figure 7 for Figure 5 Schematic diagram of the defocus of the vehicle-mounted surround view lens;

[0034] Figure 8 for Figure 5 Schematic diagram of the illumination of the vehicle-mounted surround view camera.

[0035] Description of Figure Numbers:

[0036] 1000. Vehicle-mounted surround view lens; 1. First lens; 2. Second lens; 3. Third lens; 4. Fourth lens; 5. Fifth lens; 6. Sixth lens; 7. Aperture; 8. Filter; 9. Protective glass; 10. Photosensitive chip.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0041] With the continuous development of science and technology and the continuous progress of social development, the role of optical lenses in the automotive field is becoming more and more significant. Among them, fisheye lenses are widely used in surround-view vehicles due to their advantages of large field of view and wide shooting format. At present, the consumer market is developing towards low cost and miniaturization, but many similar products have more lenses and more complex structures. Most of the existing low-cost and simple-structured lenses cannot maintain focus in environments with large temperature differences, and the size of the field of view cannot meet consumer needs.

[0042] The main purpose of the utility model is to provide a vehicle-mounted surround-view lens and a vehicle, aiming to provide a surround-view fisheye lens with small volume, large aperture, low cost, high and low temperature confocality.

[0043] See also Figure 1 and Figure 5The utility model proposes a vehicle-mounted surround-view lens 1000, which has an object side and an image side that are relatively arranged along the optical axis direction. The vehicle-mounted surround-view lens 1000 includes a first lens 1 with negative optical power, a second lens 2 with negative optical power, a third lens 3 with positive optical power, a fourth lens 4 with positive optical power, a fifth lens 5 with negative optical power, and a sixth lens 6 with positive optical power, which are arranged in sequence from the object side to the image side, so that the total optical length of the vehicle-mounted surround-view lens 1000 is controlled within 15.9 mm, the field of view angle reaches 203°, and the aperture value is between 1.8 and 2.0; wherein, the first lens 1 and the third lens 3 are both glass spherical lenses, and the second lens 2, the fourth lens 4, the fifth lens 5 and the sixth lens 6 are plastic aspherical lenses.

[0044] The technical solution of the utility model is that by setting the first lens 1 with negative focal power, it is beneficial to the collection of light in the optical system and can effectively increase the field of view; by setting the sixth lens 6 with positive focal power, it bears the larger focal power of the system, changes the propagation direction of the light beam, corrects the aberration of the off-axis field of view, and is more conducive to the imaging of the light beam on the image plane; by setting the second lens 2, the fourth lens 4, the fifth lens 5 and the sixth lens 6 as plastic aspheric lenses, the proportion of glass lenses used is greatly reduced, and the cost is reduced; by setting the first lens 1 and the third lens 3 as glass lenses, the aberration is effectively improved, ensuring that it does not defocus under high and low temperature conditions; the light trend of the lens is smooth, while introducing more light, the structure is more compact, and the total length of the lens is controlled within 15.9mm. And by reasonably arranging 4 aspheric lenses, various aberrations are corrected, the edge image quality is improved, and the imaging quality is high. In terms of aperture, the aperture value F satisfies 1.8≤F≤2.0, the lens can also image clearly in weak light, and by reasonably setting the focal length ratio, the lens does not defocus under environmental conditions of -40℃ to +105℃, and the working performance is more stable. The field of view can reach 203°±5%, the field of view is wider, and the data information is more complete. By using six lenses and reasonably setting the focal length and shape matching relationship of each lens, a small-volume, large-aperture, low-cost, high-temperature and low-temperature confocal vehicle surround view lens 1000 is realized.

[0045] It should be noted that the characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens, which is different from a spherical lens that has a constant curvature from the center of the lens to the periphery of the lens.

[0046] Furthermore, the vehicle-mounted surround view lens 1000 further includes an aperture 7, which is disposed between the third lens 3 and the fourth lens 4. The aperture 7 limits the aperture of the light beam on the optical axis, intercepts part of the light, thereby reducing the light spot, improving the image contrast, and also expanding the target surface and improving the image quality. According to the actual situation, adjusting the light flux of the aperture 7 helps to further improve the imaging quality.

[0047] Furthermore, the vehicle-mounted surround view lens 1000 further includes a photosensitive chip 10 and a protective glass 9, wherein the photosensitive chip 10 is disposed on the side of the sixth lens 6 facing the image side, and the protective glass 9 is disposed between the photosensitive chip 10 and the sixth lens 6 to protect the photosensitive chip 10. The protective glass 9 can play the role of waterproofing, dustproofing, and protecting the lens, thereby enhancing the anti-interference ability of the vehicle-mounted surround view lens 1000 and improving the imaging quality.

[0048] It is worth mentioning that the protective glass 9 is not limited to protecting the photosensitive chip 10, but can also be used to filter stray light. Specifically, the protective glass 9 is an infrared cutoff filter, which can effectively filter out infrared light that does not need to reach the imaging surface to improve the imaging quality.

[0049] Furthermore, the vehicle-mounted surround view lens 1000 also includes a filter 8 located on the side of the sixth lens 6 facing the image side, and the filter 8 is used to filter out stray light in non-working bands to reduce optical noise and reduce difficulties for subsequent photoelectric module processing. The filter 8 can also be used to adjust the color of the object image during the final imaging.

[0050] In one embodiment of the present invention, please refer to Figure 1 and Figure 5 Specifically, the first lens 1 is a concave-convex lens, and its object-side surface is convex; the second lens 2 is a concave-convex lens, and its object-side surface is convex; the third lens 3 is a biconvex lens; the fourth lens 4 is a biconvex lens; the fifth lens 5 is a biconcave lens; and the sixth lens 6 is a biconvex lens.

[0051] Further, the focal length of the first lens 1 is f1, the focal length of the second lens 2 is f2, the focal length of the third lens 3 is f3, the focal length of the fourth lens 4 is f4, the focal length of the fifth lens 5 is f5, and the focal length of the sixth lens 6 is f6, wherein: -6.0<f1<-3.2, -5.2<f2<-2.0, 2.0<f3<6.6, 2.2<f4<5.2, -4.0<f5<-1.2, 2.0<f6<5.0. This embodiment is a preferred embodiment, and through the mutual combination of different lenses and the reasonable allocation of their optical focal lengths, the entire optical system has good performance such as low cost and high pixel.

[0052] Further, the refractive index of the first lens 1 is n1, and the dispersion coefficient is v1, the refractive index of the second lens 2 is n2, and the dispersion coefficient is v2, the refractive index of the third lens 3 is n3, and the dispersion coefficient is v3, the focal refractive index of the fourth lens 4 is n4, and the dispersion coefficient is v4, the refractive index of the fifth lens 5 is n5, and the dispersion coefficient is v5, the refractive index of the sixth lens 6 is n6, and the dispersion coefficient is v6, wherein: 1.85 ≤n1≤2.00, 1.50≤n2≤1.60, 1.90≤n3≤2.05, 1.50≤n4≤1.60, 1.60≤n5≤1.70, 1.50≤n6≤1.60, 20.0≤v1≤40.0, 40.0≤v2≤60.0, 20.0≤v3≤40.0, 40.0≤v4≤60.0, 15.0≤v5≤25.0, 40.0≤v6≤60.0. This embodiment is a preferred embodiment, through the mutual combination of different lenses and the reasonable allocation of their refractive index and dispersion coefficient, the vehicle-mounted surround view lens 1000 has low cost, high pixel and good heat elimination performance.

[0053] In one embodiment of the present invention, the diameter of the first lens 1 is D1, the effective focal length of the vehicle-mounted surround view lens 1000 is EFL, the total optical length of the vehicle-mounted surround view lens 1000 is TTL, and the image plane diameter of the vehicle-mounted surround view lens 1000 is IC, wherein: D1 / TTL<0.65, 5.6mm≤IC≤6.0mm, TTL / EFL≤9.3. With such a design, by limiting the numerical relationship of the above lens characteristics, it is possible to avoid the aperture of the vehicle-mounted surround view lens 1000 being too large to meet the installation space requirements of the final product, and by limiting the proportional relationship between the total optical length and the effective focal length, the lens size can be appropriately limited, which helps to achieve miniaturization of the lens.

[0054] In one embodiment of the present invention, the fourth lens 4 has positive focal power, and the fifth lens 5 has negative focal power. By reasonably setting the focal lengths of the two lenses, the aberrations generated between them can be offset. Specifically, the combined focal length of the fourth lens 4 and the fifth lens 5 is f45, and the effective focal length of the vehicle-mounted surround view lens 1000 is EFL, wherein: 25<│f45 / EFL│<50. Such a design, by controlling the ratio of f45 to EFL, is more conducive to the aberration correction of the optical system and improves the imaging resolution of the lens.

[0055] It is worth mentioning that the surface shape of the aspherical lens in the vehicle-mounted surround view lens 1000 in this embodiment should satisfy the following equation:

[0056]

[0057] Among them, c is the curvature corresponding to the radius; y is the radial coordinate (its unit is the same as the lens length unit); k is the conic coefficient, and A, B, C, D, E, F, G... respectively represent the fourth-order, sixth-order, eighth-order, tenth-order, twelfth-order, fourteenth-order, sixteenth-order... aspheric coefficients. The above parameters can be used to set the shape and size of the aspheric surface of the lens facing the object side and the image side.

[0058] Among them, when k<-1, the corresponding surface curve of the lens is a hyperbola; when k=-1, the corresponding surface curve of the lens is a parabola; when -1<k<0, the corresponding surface curve of the lens is an ellipse; when k=0, the corresponding surface curve of the lens is a circle; when k>0, the corresponding surface curve of the lens is an oblate circle.

[0059] It should be noted that the basic parameter table of the vehicle-mounted surround view lens 1000 in an embodiment provided by the present invention is shown in Table 1, wherein the units of the curvature radius, thickness, and semi-diameter are all millimeters (mm).

[0060] Table 1

[0061]

[0062] In this embodiment, the aspheric coefficients of the aspheric lens in the vehicle-mounted surround view lens 1000 include: the quadratic surface coefficient k, the fourth-order aspheric coefficient A, the sixth-order aspheric coefficient B, the eighth-order aspheric coefficient C, the tenth-order aspheric coefficient D, the twelfth-order aspheric coefficient E, the fourteenth-order aspheric coefficient F, and the sixteenth-order aspheric coefficient G of the surface, as shown in Table 2 below.

[0063] Table 2

[0064] Face number k A B C D E F G 3 0.00E+00 -3.91E-02 9.97E-03 -1.70E-03 1.96E-04 -1.38E-05 4.93E-07 -9.58E-09 4 -1.79E-01 -5.90E-02 2.52E-02 -1.96E-02 1.21E-02 -4.78E-03 1.03E-03 -9.68E-05 8 -2.53E-01 5.17E-03 8.30E-03 -7.70E-03 4.50E-03 4.21E-04 -1.07E-03 2.99E-04 9 4.83E-01 1.07E-01 -1.06E-01 1.05E-01 -5.95E-02 1.60E-02 -3.13E-04 -2.36E-04 10 -9.16E+00 2.52E-03 -6.39E-02 7.08E-02 -4.15E-02 8.16E-03 2.19E-03 -8.16E-04 11 -2.99E+00 -3.51E-02 2.60E-02 -1.17E-02 2.68E-03 -6.35E-05 -1.06E-04 1.09E-05 12 -5.58E+00 -1.30E-02 6.10E-03 -1.46E-03 3.40E-04 -2.78E-05 -1.39E-06 7.55E-08 13 -4.24E-01 2.04E-03 -1.69E-03 1.07E-03 -2.59E-04 3.57E-05 -1.44E-07 1.11E-07

[0065] Please refer to Figure 2 , is a schematic diagram of the spherical aberration curve of the vehicle-mounted surround view lens 1000 in this embodiment, from Figure 2 It can be seen that the spherical aberration of the optical system is basically controlled within 0.03mm.

[0066] Please refer to Figure 3 , is a schematic diagram of the defocus of the vehicle-mounted surround view lens 1000 in this embodiment, Figure 3 It can be seen that the defocus of this lens does not exceed 0.01mm, basically achieving the state of not defocusing at high and low temperatures.

[0067] Please refer to Figure 4 , is a schematic diagram of the illumination of the vehicle-mounted surround view lens 1000 in this embodiment, from Figure 4 It can be seen that under different fields of view, the relative illumination of the lens is above 0.3, which means that the distribution of lens illumination is relatively uniform and the details of all areas in the image can be properly displayed.

[0068] In this embodiment, the focal length of the vehicle-mounted surround view lens 1000 is 1.7 mm, the aperture value is 2.0, the image plane diameter is 5.7 mm, and the diagonal field of view is 203°, which ensures that various aberrations of the lens are corrected, improves edge image quality, has high imaging quality, and can produce clear images even in low light. The lens is small in size and has a large field of view. It also ensures that the lens does not defocus in an environment of -40 to +105°C, and the working performance is more stable.

[0069] It should be noted that the basic parameter table of the vehicle-mounted surround view lens 1000 in another embodiment provided by the present invention is shown in Table 3, wherein the units of the curvature radius, thickness, and semi-diameter are all millimeters (mm).

[0070] Table 3

[0071]

[0072]

[0073] In this embodiment, the aspheric coefficients of the aspheric lens in the vehicle-mounted surround view lens 1000 include: the quadratic surface coefficient k, the fourth-order aspheric coefficient A, the sixth-order aspheric coefficient B, the eighth-order aspheric coefficient C, the tenth-order aspheric coefficient D, the twelfth-order aspheric coefficient E, the fourteenth-order aspheric coefficient F, and the sixteenth-order aspheric coefficient G of the surface, as shown in Table 4 below.

[0074] Table 4

[0075]

[0076]

[0077] Please refer to Figure 6 , is a schematic diagram of the spherical aberration curve of the vehicle-mounted surround view lens 1000 in this embodiment, from Figure 6 It can be seen that the spherical aberration of the optical system is basically controlled within 0.03mm.

[0078] Please refer to Figure 7 , is a schematic diagram of the defocus of the vehicle-mounted surround view lens 1000 in this embodiment, Figure 7 It can be seen that the defocus of this lens does not exceed 0.015mm, basically achieving the state of no defocusing at high and low temperatures.

[0079] Please refer to Figure 8 , is a schematic diagram of the illumination of the vehicle-mounted surround view lens 1000 in this embodiment, from Figure 8 It can be seen that under different fields of view, the relative illumination of the lens is above 0.3, which means that the distribution of lens illumination is relatively uniform and the details of all areas in the image can be properly displayed.

[0080] In this embodiment, the focal length of the vehicle-mounted surround view lens 1000 is 1.7 mm, the aperture value is 2.0, the image plane diameter is 5.7 mm, and the diagonal field of view is 203°, which ensures that various aberrations of the lens are corrected, improves edge image quality, has high imaging quality, and can produce clear images even in low light. The lens is small in size and has a large field of view. It also ensures that the lens does not defocus in an environment of -40 to +105°C, and the working performance is more stable.

[0081] The utility model also proposes a vehicle, which includes the above-mentioned vehicle-mounted surround-view lens 1000. Since the vehicle includes the vehicle-mounted surround-view lens 1000, the specific structure of the vehicle-mounted surround-view lens 1000 refers to the above-mentioned embodiment. Since the vehicle-mounted surround-view lens 1000 of the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0082] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vehicle-mounted surround view camera, characterized in that: The vehicle-mounted surround-view lens has an object side and an image side that are arranged opposite to each other along the optical axis direction, and the vehicle-mounted surround-view lens includes a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with negative optical power, and a sixth lens with positive optical power, which are arranged in sequence from the object side to the image side, so that the total optical length of the vehicle-mounted surround-view lens is controlled within 15.9 mm, the field of view angle reaches 203°, and the aperture value is between 1.8 and 2.0; The first lens and the third lens are both glass spherical lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic aspherical lenses.

2. The vehicle-mounted surround view camera according to claim 1, characterized in that: The vehicle-mounted surround view lens further includes an aperture, and the aperture is arranged between the third lens and the fourth lens.

3. The vehicle-mounted surround view camera according to claim 1, characterized in that: The vehicle-mounted surround view lens also includes a photosensitive chip and a protective glass. The photosensitive chip is arranged on the side of the sixth lens facing the image side, and the protective glass is arranged between the photosensitive chip and the sixth lens to protect the photosensitive chip.

4. The vehicle-mounted surround view camera according to claim 1, characterized in that: The vehicle-mounted surround view lens further includes a filter located on one side of the sixth lens in a direction toward the image side, and the filter is used to filter out stray light in a non-working band.

5. The vehicle-mounted surround view camera according to claim 1, characterized in that: The first lens is a concave-convex lens, and its object side surface is convex; The second lens is a concave-convex lens, and its object side surface is convex; The third lens is a biconvex lens; The fourth lens is a biconvex lens; The fifth lens is a biconcave lens; The sixth lens is a biconvex lens.

6. The vehicle-mounted surround view camera as claimed in claim 5, characterized in that: The focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, wherein: -6.0<f1<-3.2, -5.2<f2<-2.0, 2.0<f3<6.6, 2.2<f4<5.2, -4.0<f5< -1.2，2.0＜f6＜5.0。 7. The vehicle-mounted surround view camera as claimed in claim 5, characterized in that: The refractive index of the first lens is n1, and the dispersion coefficient is v1; the refractive index of the second lens is n2, and the dispersion coefficient is v2; the refractive index of the third lens is n3, and the dispersion coefficient is v3; the focal refractive index of the fourth lens is n4, and the dispersion coefficient is v4; the refractive index of the fifth lens is n5, and the dispersion coefficient is v5; the refractive index of the sixth lens is n6, and the dispersion coefficient is v6, wherein: 1.85≤n1≤2.00, 1.50≤n2≤1.60, 1.90≤n3≤2.05, 1.50≤n4≤1.60, 1.60≤n5≤1.70, 1.50≤n6≤1.60, 20.0≤v1≤40.0, 40.0≤v2≤60.0, 20.0≤v3≤40.0, 40.0≤v4≤60.0, 15.0≤v5≤25.0, 40.0≤v6≤60.

0.

8. The vehicle-mounted surround view camera as claimed in claim 1, characterized in that: The diameter of the first lens is D1, the effective focal length of the vehicle-mounted surround view lens is EFL, the total optical length of the vehicle-mounted surround view lens is TTL, and the image plane diameter of the vehicle-mounted surround view lens is IC, wherein: D1 / TTL<0.65, 5.6mm≤IC≤6.0mm, TTL / EFL≤9.

3.

9. The vehicle-mounted surround view camera according to claim 1, characterized in that: The combined focal length of the fourth lens and the fifth lens is f45, and the effective focal length of the vehicle-mounted surround view lens is EFL, wherein: 25<│f45 / EFL│<50.

10. A vehicle, characterized in that: The invention comprises the vehicle-mounted surround view lens as claimed in any one of claims 1 to 9.

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