Vehicle-mounted side view lens and vehicle

Abstract

The invention provides a vehicle-mounted side-view lens and a vehicle, and relates to the technical field of vehicle-mounted lenses, and the vehicle-mounted side-view lens is provided with an object side and an image side which are oppositely arranged in the direction of an optical axis. Comprising a first lens with negative focal power, a second lens with positive focal power, a diaphragm, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with positive or negative focal power, a sixth lens with positive or negative focal power, a seventh lens with positive focal power, protective glass and an image surface which are sequentially arranged from an object side to an image side, the F number of the vehicle-mounted side view lens reaches 1.4, and the maximum imaging angle reaches 140 degrees; the first lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all glass spherical lenses, and the second lens and the seventh lens are plastic aspheric lenses. According to the scheme, the seven lenses are adopted, and the focal power and the material of each lens are reasonably set, so that the vehicle-mounted side-view lens which is large in aperture, large in angle imaging and good in temperature adaptability is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted lenses, in particular to a vehicle-mounted side-view lens and a vehicle. BACKGROUND

[0002] The vehicle-mounted side-view lens is an important component of intelligent driving and automobile electronics, and its development is of great significance in improving driving safety and traffic efficiency, enhancing real-time environmental perception, avoiding traffic accidents, and promoting the development of unmanned driving technology. In some practical application scenarios, the vehicle-mounted lens needs to be installed in a smaller hidden manner to improve aesthetics, and on the other hand, to achieve a large monitoring range on both sides of the vehicle, the lens needs a large field of view. In order to meet the imaging clarity in low-light environments, the lens needs to have a large aperture to increase the amount of light. In summary, in order to meet the higher requirements of users for driving accuracy and intelligence, the vehicle-mounted side-view lens is developing towards real-time imaging miniaturization, larger monitoring angle, and larger aperture.

[0003] However, due to the limitations of existing technology development, the mainstream vehicle-mounted side-view lenses on the market cannot simultaneously meet the requirements of miniaturization, high resolution, and large field of view, and there are also problems of poor imaging quality under high and low temperature conditions. SUMMARY

[0004] The main purpose of the present application is to provide a vehicle-mounted side-view lens with a large aperture, a large angle of imaging, and good temperature adaptability To achieve the above purpose, the present application provides a vehicle-mounted side-view lens, which has an object side and an image side arranged opposite to each other along the optical axis direction, and comprises, in order from the object side to the image side, a first lens with a negative focal power, a second lens with a positive focal power, a diaphragm, a third lens with a positive focal power, a fourth lens with a positive focal power, a fifth lens with a positive or negative focal power, a sixth lens with a positive or negative focal power, a seventh lens with a positive focal power, a protective glass, and an image surface, so that the F number of the vehicle-mounted side-view lens reaches 1.4 and the maximum imaging angle reaches 140°. The first lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are all glass spherical lenses, and the second lens and the seventh lens are plastic aspherical lenses.

[0005] In an embodiment, the total optical length of the vehicle-mounted side-view lens is TTL, and the back focal length of the vehicle-mounted side-view lens is BFL, wherein: BFL / TTL>0.08.

[0006] In an embodiment, the fifth lens and the sixth lens are glued together.

[0007] In an embodiment, the first lens is a meniscus lens with a convex object side surface; the second lens is a meniscus lens with a concave object side surface; the third lens is a meniscus lens with a concave object side surface; the fourth lens is a double convex lens; the fifth lens is a double convex lens; the sixth lens is a double concave lens; the seventh lens is a meniscus lens with a convex object side surface.

[0008] In an embodiment, the focal length of the vehicle side mirror head is f, 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, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, wherein: -3.5≤f1 / f≤-0.5, 15≤f2 / f≤70, 1.5≤f3 / f≤7.5, 1.0≤f4 / f≤5.5, 0

[0009] In an embodiment, the refractive index of the first lens is n1, the dispersion coefficient of the first lens is v1, the refractive index of the second lens is n2, the dispersion coefficient of the second lens is v2, the refractive index of the third lens is n3, the dispersion coefficient of the third lens is v3, the refractive index of the fourth lens is n4, the dispersion coefficient of the fourth lens is v4, the refractive index of the fifth lens is n5, the dispersion coefficient of the fifth lens is v5, the refractive index of the sixth lens is n6, the dispersion coefficient of the sixth lens is v6, and the refractive index of the seventh lens is n7, the dispersion coefficient of the seventh lens is v7, wherein: 1.60≤n1≤1.95, 1.40≤n2≤1.65, 1.75≤n3≤2.00, 1.45≤n4≤1.70, 1.50≤n5≤1.90, 1.80≤n6≤2.00, 1.40≤n7≤1.70, 30≤v1≤60, 40≤v2≤70, 25≤v3≤50, 50≤v4≤80, 45≤v5≤85, 20≤v6≤40, 40≤v7≤70.

[0010] In an embodiment, the first lens is a meniscus lens with a convex object side surface; the second lens is a meniscus lens with a concave object side surface; the third lens is a double convex lens; the fourth lens is a double convex lens; the fifth lens is a double concave lens; the sixth lens is a double convex lens; The seventh lens is a concave-convex lens, and its object-side surface is convex.

[0011] In one embodiment, the focal length of the vehicle-mounted side-view lens is f, 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, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, wherein: -3.5≤f1 / f≤-0.5, 40≤f2 / f≤80, 1.0≤f3 / f≤4.5, 1.0≤f4 / f≤5.5, -2.5≤f5 / f<0, 0<f6 / f≤4.0, 10≤f7 / f≤40.

[0012] In one embodiment, the first lens has a refractive index of n1 and a dispersion coefficient of v1; the second lens has a refractive index of n2 and a dispersion coefficient of v2; the third lens has a refractive index of n3 and a dispersion coefficient of v3; the fourth lens has a focal refractive index of n4 and a dispersion coefficient of v4; the fifth lens has a refractive index of n5 and a dispersion coefficient of v5; the sixth lens has a refractive index of n6 and a dispersion coefficient of v6; and the seventh lens has a refractive index of n7 and a dispersion coefficient of v7, wherein: 1.45≤n1≤1.95, 1.40≤n2≤1.70, 1.80≤n3≤2.00, 1.40≤n4≤1.80, 1.80≤n5≤2.00, 1.40≤n6≤1.90, 1.30≤n7≤1.75, 30≤v1≤70, 40≤v2≤75, 20≤v3≤50, 50≤v4≤90, 15≤v5≤40, 50≤v6≤90, 40≤v7≤70.

[0013] The present invention also proposes a vehicle including the above-mentioned vehicle-mounted side-view lens, wherein the vehicle-mounted side-view lens has an object side and an image side arranged opposite to each other along the optical axis, and the vehicle-mounted side-view lens includes a first lens with negative optical power, a second lens with positive optical power, an aperture, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with positive or negative optical power, a sixth lens with positive or negative optical power, a seventh lens with positive optical power, a protective glass, and an image plane arranged sequentially from the object side to the image side, so that the vehicle-mounted side-view lens has an F number of 1.4 and a maximum imaging angle of 140°; The first, third, fourth, fifth, and sixth lenses are all glass spherical lenses, while the second and seventh lenses are plastic aspherical lenses.

[0014] The technical solution provided by this invention, by setting the first lens with negative optical power, facilitates the collection of light by the optical system and effectively increases the field of view; by setting the seventh lens with positive optical power, it bears a large optical power of the system, changes the propagation direction of the beam, corrects aberrations in the off-axis field of view, and is more conducive to the beam forming on the image plane; by setting the first, third, fourth, fifth, and sixth lenses as glass spherical lenses, aberrations are effectively improved, ensuring that the lens does not defocus under high and low temperature conditions; by limiting the relationship between the back focal length and the total optical length, more light is introduced while making the structure more compact. The lens proposed in this solution can achieve an F-number of 1.4, a maximum imaging angle of 140°, and has good adaptability to high and low temperatures, with more stable working performance. This solution, by using seven lenses and rationally setting the optical power and shape matching of each lens, realizes a vehicle-mounted side-view lens with a large aperture, wide-angle imaging, and good temperature adaptability. Attached Figure Description

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

[0016] Figure 1 This is a schematic diagram of a structural embodiment of the vehicle-mounted side-view camera provided by the present invention; Figure 2 for Figure 1 SPOT dot plot of a vehicle-mounted side-view camera; Figure 3 for Figure 1 Optical fan diagram of a side-view camera mounted on a vehicle; Figure 4 This is a schematic diagram of another embodiment of the vehicle-mounted side-view camera provided by the present invention; Figure 5 for Figure 4 SPOT dot plot of a vehicle-mounted side-view camera; Figure 6 for Figure 4 Optical fan diagram of the vehicle-mounted side-view camera.

[0017] Explanation of icon numbers: 1000. Vehicle-mounted side-view camera; 1. First lens; 2. Second lens; 3. Third lens; 4. Fourth lens; 5. Fifth lens; 6. Sixth lens; 7. Seventh lens; 8. Aperture; 9. Protective glass; 10. Image plane.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0022] Vehicle side-view cameras are a crucial component of intelligent driving and automotive electronics, and their development is significant for improving driving safety and traffic efficiency, enhancing real-time environmental perception, preventing traffic accidents, and advancing autonomous driving technology. In some practical applications, vehicle cameras require smaller, concealed installations to improve aesthetics. Furthermore, to achieve a wide monitoring range on both sides of the vehicle, the cameras need a wide field of view. To ensure image clarity in low-light conditions, the cameras need a large aperture to increase light intake. In summary, to meet users' higher demands for driving accuracy and intelligence, vehicle side-view cameras are developing towards smaller real-time imaging, wider monitoring angles, and larger apertures.

[0023] However, due to limitations in current technology, mainstream automotive side-view lenses on the market cannot simultaneously meet the requirements of miniaturization, high resolution, and a wide field of view. They also suffer from poor image quality when used under high and low temperature conditions.

[0024] The main objective of this invention is to provide a vehicle-mounted side-view lens and vehicle, which aims to provide a vehicle-mounted side-view lens with a large aperture, wide-angle imaging, and good temperature adaptability.

[0025] Please see Figure 1 and Figure 4 This invention proposes a vehicle-mounted side-view lens 1000, which has an object side and an image side arranged opposite to each other along the optical axis. The vehicle-mounted side-view lens 1000 includes a first lens 1 with negative optical power, a second lens 2 with positive optical power, an aperture 8, a third lens 3 with positive optical power, a fourth lens 4 with positive optical power, a fifth lens 5 with positive or negative optical power, a sixth lens 6 with positive or negative optical power, a seventh lens 7 with positive optical power, a protective glass 9, and an image plane 10, arranged sequentially from the object side to the image side, so that the vehicle-mounted side-view lens 1000 has an F-number of 1.4 and a maximum imaging angle of 140°. The first lens 1, the third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6 are all glass spherical lenses, while the second lens 2 and the seventh lens 7 are plastic aspherical lenses.

[0026] The technical solution provided by this invention, by setting the first lens 1 with negative optical power, facilitates the collection of light from the optical system and effectively increases the field of view; by setting the seventh lens 7 with positive optical power, it bears a larger optical power of the system, changes the propagation direction of the light beam, corrects aberrations in the off-axis field of view, and is more conducive to the image formation of the light beam on the image plane; by setting the first lens 1, third lens 3, fourth lens 4, fifth lens 5, and sixth lens 6 as glass spherical lenses, aberrations are effectively improved, ensuring that the lens does not defocus under high and low temperature conditions; by limiting the relationship between the back focal length and the total optical length, more light is introduced while making the structure more compact. The lens proposed in this solution can achieve an F-number of 1.4, a maximum imaging angle of 140°, and has good high and low temperature adaptability, with more stable working performance. This solution, by using seven lenses and rationally setting the optical power and shape matching relationship of each lens, realizes a vehicle side-view lens 1000 with a large aperture, wide-angle imaging, and good temperature adaptability.

[0027] It should be noted that the characteristic of aspherical lenses is that the curvature changes continuously from the center of the lens to the periphery, unlike spherical lenses which have a constant curvature from the center to the periphery.

[0028] It should also be noted that the aperture 8 limits the light beam's aperture along the optical axis, blocking some light rays, thereby reducing light spots, improving image contrast, and also expanding the target surface and improving image quality. Adjusting the luminous flux of the aperture 8 according to actual conditions helps to further improve image quality. The protective glass 9 serves to waterproof and dustproof the sensor, enhancing the anti-interference capability of the vehicle-mounted side-view lens 1000 and improving image quality.

[0029] Furthermore, to improve the image quality of the optical system, reduce light energy loss, increase imaging clarity, protect the scale surface, and further optimize the manufacturing process to meet design requirements, in this embodiment, the fifth lens 5 and the sixth lens 6 are cemented together. This arrangement, through the reasonable use of cemented components and the appropriate allocation of optical power, effectively corrects aberrations and achieves a heat-free effect at high and low temperatures. It also effectively reduces chromatic aberration, enabling simultaneous clarity of the confocal plane in both the visible and near-infrared imaging bands.

[0030] Furthermore, the total optical length of the vehicle-mounted side-view lens 1000 is TTL, and the back focal length of the vehicle-mounted side-view lens 1000 is BFL, wherein BFL / TTL > 0.08. By reasonably limiting the ratio of BFL to TTL, the entire lens becomes more compact, which helps to optimize the optical performance of the system, improve image quality, and reduce aberrations such as spherical aberration and coma, thereby obtaining a clearer image.

[0031] Specifically, in one embodiment provided by the present invention, please refer to Figure 1 The first lens 1 is a concave-convex lens with a convex object-side surface; the second lens 2 is a concave-convex lens with a concave object-side surface; the third lens 3 is a concave-convex lens with a concave object-side surface; the fourth lens 4 is a biconvex lens; the fifth lens 5 is a biconvex lens; the sixth lens 6 is a biconcave lens; and the seventh lens 7 is a concave-convex lens with a convex object-side surface.

[0032] Further, the focal length of the vehicle-mounted side-view lens 1000 is f, 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, the focal length of the sixth lens 6 is f6, and the focal length of the seventh lens 7 is f7, wherein: -3.5≤f1 / f≤-0.5, 15≤f2 / f≤70, 1.5≤f3 / f≤7.5, 1.0≤f4 / f≤5.5, 0<f5 / f≤4.0, -2.5≤f6 / f<0, and 5≤f7 / f≤35. This embodiment is a preferred embodiment. Through the combination of different lenses and the reasonable allocation of their optical power, the entire lens has good performance such as high imaging quality.

[0033] Further, the first lens 1 has a refractive index of n1 and a dispersion coefficient of v1; the second lens 2 has a refractive index of n2 and a dispersion coefficient of v2; the third lens 3 has a refractive index of n3 and a dispersion coefficient of v3; the fourth lens 4 has a focal refractive index of n4 and a dispersion coefficient of v4; the fifth lens 5 has a refractive index of n5 and a dispersion coefficient of v5; the sixth lens 6 has a refractive index of n6 and a dispersion coefficient of v6; and the seventh lens 7 has a refractive index of n7 and a dispersion coefficient of v1. The value is v7, where: 1.60≤n1≤1.95, 1.40≤n2≤1.65, 1.75≤n3≤2.00, 1.45≤n4≤1.70, 1.50≤n5≤1.90, 1.80≤n6≤2.00, 1.40≤n7≤1.70, 30≤v1≤60, 40≤v2≤70, 25≤v3≤50, 50≤v4≤80, 45≤v5≤85, 20≤v6≤40, 40≤v7≤70. This embodiment is a preferred embodiment. By combining different lenses and rationally allocating their refractive index and dispersion coefficient, the vehicle-mounted side-view lens 1000 has high imaging quality and good thermal performance.

[0034] Furthermore, the maximum field of view (FOV) of the vehicle-mounted side-view lens 1000 is defined as FOV, the focal length of the vehicle-mounted side-view lens 1000 is defined as f, and the image height of the vehicle-mounted side-view lens 1000 at the maximum field of view is defined as h, where: 50 ≤ (FOV × f) / h ≤ 85. By reasonably limiting the relationship between FOV, f, and h, the optical performance of the system can be optimized, the imaging quality improved, and a clearer image obtained.

[0035] Specifically, in another embodiment provided by the present invention, please refer to Figure 4 The first lens 1 is a concave-convex lens with a convex object-side surface; the second lens 2 is a concave-convex lens with a concave object-side surface; the third lens 3 is a biconvex lens; the fourth lens 4 is a biconvex lens; the fifth lens 5 is a biconcave lens; the sixth lens 6 is a biconvex lens; and the seventh lens 7 is a concave-convex lens with a convex object-side surface.

[0036] Further, the focal length of the vehicle-mounted side-view lens 1000 is f, 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, the focal length of the sixth lens 6 is f6, and the focal length of the seventh lens 7 is f7, wherein: -3.5≤f1 / f≤-0.5, 40≤f2 / f≤80, 1.0≤f3 / f≤4.5, 1.0≤f4 / f≤5.5, -2.5≤f5 / f<0, 0<f6 / f≤4.0, and 10≤f7 / f≤40. This embodiment is a preferred embodiment. Through the combination of different lenses and the reasonable allocation of their optical power, the entire lens has good performance such as high imaging quality.

[0037] Further, the first lens 1 has a refractive index of n1 and a dispersion coefficient of v1; the second lens 2 has a refractive index of n2 and a dispersion coefficient of v2; the third lens 3 has a refractive index of n3 and a dispersion coefficient of v3; the fourth lens 4 has a focal refractive index of n4 and a dispersion coefficient of v4; the fifth lens 5 has a refractive index of n5 and a dispersion coefficient of v5; the sixth lens 6 has a refractive index of n6 and a dispersion coefficient of v6; and the seventh lens 7 has a refractive index of n7 and a dispersion coefficient of v1. The value is v7, where: 1.45≤n1≤1.95, 1.40≤n2≤1.70, 1.80≤n3≤2.00, 1.40≤n4≤1.80, 1.80≤n5≤2.00, 1.40≤n6≤1.90, 1.30≤n7≤1.75, 30≤v1≤70, 40≤v2≤75, 20≤v3≤50, 50≤v4≤90, 15≤v5≤40, 50≤v6≤90, and 40≤v7≤70. This embodiment is a preferred embodiment. By combining different lenses and rationally allocating their refractive index and dispersion coefficient, the vehicle-mounted side-view lens 1000 achieves high imaging quality and good thermal performance.

[0038] Furthermore, the maximum field of view (FOV) of the vehicle-mounted side-view lens 1000 is defined as FOV, the focal length of the vehicle-mounted side-view lens 1000 is defined as f, and the image height of the vehicle-mounted side-view lens 1000 at the maximum field of view is defined as h, where: 45 ≤ (FOV × f) / h ≤ 85. By reasonably limiting the relationship between FOV, f, and h, the optical performance of the system can be optimized, the imaging quality improved, and a clearer image obtained.

[0039] It is worth mentioning that the surface shape of the aspherical lens in the vehicle-mounted side-view lens 1000 described in this embodiment should satisfy the following equation:

[0040] Where 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 conic section coefficient, and A, B, C, D, E, F, G... represent the fourth, sixth, eighth, tenth, twelfth, fourteenth, sixteenth... aspherical coefficients, respectively. These parameters allow the setting of the shape and size of the aspherical surfaces facing the object and image sides of the lens.

[0041] Specifically, when k < -1, the corresponding lens surface curve is a hyperbola; when k = -1, the corresponding lens surface curve is a parabola; when -1 < k < 0, the corresponding lens surface curve is an ellipse; when k = 0, the corresponding lens surface curve is a circle; and when k > 0, the corresponding lens surface curve is an oval.

[0042] It should be noted that the basic parameters of the vehicle-mounted side-view lens 1000 in one embodiment of the present invention are shown in Table 1, where the unit of radius of curvature and thickness is millimeters (mm).

[0043] Table 1

[0044] In this embodiment, the aspherical coefficients of the aspherical lens in the vehicle side-view lens 1000 include: the quadratic surface coefficient k, the fourth-order aspherical coefficient A, the sixth-order aspherical coefficient B, the eighth-order aspherical coefficient C, the tenth-order aspherical coefficient D, the twelfth-order aspherical coefficient E, the fourteenth-order aspherical coefficient F, and the sixteenth-order aspherical coefficient G, as shown in Table 2 below.

[0045] Table 2

[0046] Please refer to Figure 2 This is a SPOT point map of the vehicle-mounted side-view camera 1000 in this embodiment, from... Figure 2 It can be seen that the image point of this lens is small and the color is more concentrated at different field of view positions, indicating that the image quality is good.

[0047] Please refer to Figure 3The figure shows the fan plot of the vehicle-mounted side-view lens 1000 in this embodiment. The horizontal axis represents the normalized beam aperture, and the vertical axis represents the transverse aberration. Ideally, each curve should completely coincide with the horizontal axis, at which point all light rays in the field of view are focused at the same point on the image plane 10. The vertical axis in the image can also represent the maximum dispersion range of the beam on the ideal image plane 10. The fan plot can not only reflect the monochromatic aberration of different wavelengths, but also the magnitude of the transverse chromatic aberration. As shown in the figure, the vehicle-mounted side-view lens 1000 closely approximates the horizontal axis in each wavelength under each field of view, indicating that the transverse aberration of each wavelength is well corrected. In addition, the curves of each color do not show obvious dispersion, indicating that this lens also has good correction for chromatic aberration, ensuring the imaging requirement of clear images across the entire wavelength range of the vehicle-mounted side-view lens 1000.

[0048] In this embodiment, the aperture value of the vehicle-mounted side-view lens 1000 is 1.4, which ensures that various aberrations of the lens are corrected, improves edge image quality, has high image quality, a wide imaging angle, and does not defocus under high and low temperature environmental conditions, maintaining good performance and relatively stable working performance.

[0049] It should be noted that, in another embodiment of the present invention, the basic parameters of the vehicle side-view lens 1000 are shown in Table 3, where the units of radius of curvature and thickness are millimeters (mm).

[0050] Table 3

[0051] In this embodiment, the aspherical coefficients of the aspherical lens in the vehicle side-view lens 1000 include: the quadratic surface coefficient k, the fourth-order aspherical coefficient A, the sixth-order aspherical coefficient B, the eighth-order aspherical coefficient C, the tenth-order aspherical coefficient D, the twelfth-order aspherical coefficient E, the fourteenth-order aspherical coefficient F, and the sixteenth-order aspherical coefficient G, as shown in Table 4 below.

[0052] Table 4

[0053] Please refer to Figure 5 This is a SPOT point map of the vehicle-mounted side-view camera 1000 in this embodiment, from... Figure 5 It can be seen that the image point of this lens is small and the color is more concentrated at different field of view positions, indicating that the image quality is good.

[0054] Please refer to Figure 6The figure shows the fan plot of the vehicle-mounted side-view lens 1000 in this embodiment. The horizontal axis represents the normalized beam aperture, and the vertical axis represents the transverse aberration. Ideally, each curve should completely coincide with the horizontal axis, at which point all light rays in the field of view are focused at the same point on the image plane 10. The vertical axis in the image can also represent the maximum dispersion range of the beam on the ideal image plane 10. The fan plot can not only reflect the monochromatic aberration of different wavelengths, but also the magnitude of the transverse chromatic aberration. As shown in the figure, the vehicle-mounted side-view lens 1000 closely approximates the horizontal axis in each wavelength under each field of view, indicating that the transverse aberration of each wavelength is well corrected. In addition, the curves of each color do not show obvious dispersion, indicating that this lens also has good correction for chromatic aberration, ensuring the imaging requirement of clear images across the entire wavelength range of the vehicle-mounted side-view lens 1000.

[0055] In this embodiment, the aperture value of the vehicle-mounted side-view lens 1000 is 1.4, which ensures that various aberrations of the lens are corrected, improves edge image quality, has high image quality, a wide imaging angle, and does not defocus under high and low temperature environmental conditions, maintaining good performance and relatively stable working performance.

[0056] The present invention also proposes a vehicle, the vehicle including the above-mentioned vehicle-mounted side-view camera 1000. Since the vehicle includes the vehicle-mounted side-view camera 1000, the specific structure of the vehicle-mounted side-view camera 1000 is as described in the above embodiments. Since the vehicle-mounted side-view camera 1000 of this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0057] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vehicle-mounted side-view camera, characterized in that, The vehicle-mounted side-view lens has an object side and an image side arranged opposite to each other along the optical axis. It includes a first lens with negative optical power, a second lens with positive optical power, an aperture, a third lens with positive optical power, a fourth lens with positive optical power, a fifth lens with positive or negative optical power, a sixth lens with positive or negative optical power, a seventh lens with positive optical power, a protective glass, and an image plane arranged sequentially from the object side to the image side, so that the vehicle-mounted side-view lens has an F-number of 1.4 and a maximum imaging angle of 140°. The first, third, fourth, fifth, and sixth lenses are all glass spherical lenses, while the second and seventh lenses are plastic aspherical lenses.

2. The vehicle-mounted side-view camera as described in claim 1, characterized in that, The total optical length of the vehicle-mounted side-view camera is TTL, and the back focal length of the vehicle-mounted side-view camera is BFL, wherein: BFL / TTL > 0.

08.

3. The vehicle-mounted side-view camera as described in claim 1, characterized in that, The fifth lens is bonded to the sixth lens.

4. The vehicle-mounted side-view camera as described in any one of claims 1 to 3, 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 concave. The third lens is a concave-convex lens, and its object-side surface is concave. The fourth lens is a biconvex lens; The fifth lens is a biconvex lens; The sixth lens is a biconcave lens; The seventh lens is a concave-convex lens, and its object-side surface is convex.

5. The vehicle-mounted side-view camera as described in claim 4, characterized in that, The focal length of the vehicle-mounted side-view camera is f, 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, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, wherein: -3.5≤f1 / f≤-0.5, 15≤f2 / f≤70, 1.5≤f3 / f≤7.5, 1.0≤f4 / f≤5.5, 0<f5 / f≤4.0, -2.5≤f6 / f<0, 5≤f7 / f≤35.

6. The vehicle-mounted side-view camera as described in claim 4, characterized in that, The first lens has a refractive index of n1 and a dispersion coefficient of v1; the second lens has a refractive index of n2 and a dispersion coefficient of v2; the third lens has a refractive index of n3 and a dispersion coefficient of v3; the fourth lens has a focal refractive index of n4 and a dispersion coefficient of v4; the fifth lens has a refractive index of n5 and a dispersion coefficient of v5; the sixth lens has a refractive index of n6 and a dispersion coefficient of v6; and the seventh lens has a refractive index of n7 and a dispersion coefficient of v7, wherein: 1.60≤n1≤1.95, 1.40≤n2≤1.65, 1.75≤n3≤2.00, 1.45≤n4≤1.70, 1.50≤n5≤1.90, 1.80≤n6≤2.00, 1.40≤n7≤1.70, 30≤v1≤60, 40≤v2≤70, 25≤v3≤50, 50≤v4≤80, 45≤v5≤85, 20≤v6≤40, 40≤v7≤70.

7. The vehicle-mounted side-view camera as described in any one of claims 1 to 3, 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 concave. 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; The seventh lens is a concave-convex lens, and its object-side surface is convex.

8. The vehicle-mounted side-view camera as described in claim 7, characterized in that, The focal length of the vehicle-mounted side-view camera is f, 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, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, wherein: -3.5≤f1 / f≤-0.5, 40≤f2 / f≤80, 1.0≤f3 / f≤4.5, 1.0≤f4 / f≤5.5, -2.5≤f5 / f<0, 0<f6 / f≤4.0, 10≤f7 / f≤40.

9. The vehicle-mounted side-view camera as described in claim 7, characterized in that, The first lens has a refractive index of n1 and a dispersion coefficient of v1; the second lens has a refractive index of n2 and a dispersion coefficient of v2; the third lens has a refractive index of n3 and a dispersion coefficient of v3; the fourth lens has a focal refractive index of n4 and a dispersion coefficient of v4; the fifth lens has a refractive index of n5 and a dispersion coefficient of v5; the sixth lens has a refractive index of n6 and a dispersion coefficient of v6; and the seventh lens has a refractive index of n7 and a dispersion coefficient of v7, wherein: 1.45≤n1≤1.95, 1.40≤n2≤1.70, 1.80≤n3≤2.00, 1.40≤n4≤1.80, 1.80≤n5≤2.00, 1.40≤n6≤1.90, 1.30≤n7≤1.75, 30≤v1≤70, 40≤v2≤75, 20≤v3≤50, 50≤v4≤90, 15≤v5≤40, 50≤v6≤90, 40≤v7≤70.

10. A vehicle, characterized in that, Including the vehicle-mounted side-view camera as described in any one of claims 1 to 9.

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