Vehicle-mounted ADAS lens and vehicle

Abstract

The utility model provides a vehicle-mounted ADAS lens and a vehicle, based on the technical field of vehicle-mounted lenses, the vehicle-mounted ADAS lens is provided with an object side and an image side which are oppositely arranged along the optical axis direction, and the vehicle-mounted ADAS lens comprises a first lens group with positive focal power, a second lens group with positive focal power, a third lens group with positive focal power, a fourth lens group with positive focal power and a fifth lens group with positive focal power which are sequentially arranged from the object side to the image side, all lenses in the first lens group and the second lens group are glass spherical lenses, the focal length of the first lens group is f11, the focal length of the second lens group is f22, the focal length of the vehicle-mounted ADAS lens is f, f11 / f is larger than 1.5 and smaller than 2.5, f22 / f is larger than 3 and smaller than 6.5, so that the field angle of the vehicle-mounted ADAS lens reaches 130 degrees or above, the F value of the number of apertures reaches 1.8, and the F value of the number of apertures reaches 1.8. And the resolution reaches three million pixels. According to the technical scheme provided by the utility model, the focal power of each lens group and the material of the lens are reasonably arranged, so that the vehicle-mounted ADAS lens which has a large visual angle, a large aperture and high image quality and can clearly image in a weak light environment is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle-mounted lens technical field, especially a kind of vehicle-mounted ADAS lens and vehicle. BACKGROUND

[0002] With the technical innovation and vigorous promotion of intelligent driving car, the demand of consumers and car manufacturers for driving safety is increasing. As an important part of intelligent driving, the advanced intelligent auxiliary system (Advanced Driving Assistance System, ADAS) equipped with special high-definition camera can effectively reduce the occurrence of danger in driving process, and provide safety protection for drivers. At present, the image surface corresponding to the field of view angle of most vehicle-mounted ADAS lenses is small, the resolution is insufficient, the color difference of imaging is large, the distortion is large, and there is more stray light, and the imaging quality at night is low, and there is still a lot of room for improvement in performance. SUMMARY

[0003] The main purpose of the utility model is to provide a kind of vehicle-mounted ADAS lens and car, to provide a kind of vehicle-mounted ADAS lens with large angle of view, large aperture, high image quality and clear imaging in weak light environment.

[0004] To achieve the above purpose, the utility model provides a kind of vehicle-mounted ADAS lens, the vehicle-mounted ADAS lens has the object side and the image side that are oppositely arranged along the optical axis direction, the vehicle-mounted ADAS lens includes the first lens group with positive focal power and the second lens group with positive focal power arranged in sequence from the object side to the image side, all lenses in the first lens group and the second lens group are set as glass spherical lens, the focal length of the first lens group is f11, the focal length of the second lens group is f22, the focal length of the vehicle-mounted ADAS lens is f, wherein: 1.5

[0005] In an embodiment, the vehicle-mounted ADAS lens further includes a diaphragm, and the diaphragm is arranged between the first lens group and the second lens group.

[0006] In an embodiment, the vehicle-mounted ADAS lens further includes a filter and a protective glass, the filter is arranged on one side of the second lens group towards the image side direction, for filtering out stray light of non-working waveband, and the protective glass is arranged on one side of the filter towards the image side direction.

[0007] In an embodiment, the first lens group comprises, arranged in order from the object side to the image side, a first lens with negative refractive power, a second lens group with negative refractive power, a third lens with positive refractive power, and a fourth lens with positive refractive power.

[0008] The second lens group comprises, arranged in order from the object side to the image side, a fifth lens with positive refractive power, a sixth lens group with negative refractive power, and a seventh lens with positive refractive power.

[0009] In an embodiment, the fifth lens and the sixth lens are cemented together, the focal length of the cemented lens of the fifth lens and the sixth lens is f56, and the focal length of the vehicle-mounted ADAS lens is f, wherein:

[0010] 5 < f56 / f < 10.

[0011] In an embodiment, the first lens is a meniscus lens, and the object side surface of the first lens is a convex surface.

[0012] The second lens is a meniscus lens, and the object side surface of the second lens is a concave surface.

[0013] The third lens is a double convex lens.

[0014] The fourth lens is a meniscus lens, and the object side surface of the fourth lens is a concave surface.

[0015] The fifth lens is a double convex lens.

[0016] The sixth lens is a meniscus lens, and the object side surface of the sixth lens is a concave surface.

[0017] The seventh lens is a double convex lens.

[0018] In an 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 cemented lens of the fifth lens and the sixth lens is f56, the focal length of the seventh lens is f7, and the focal length of the vehicle-mounted ADAS lens is f, wherein:

[0019] -2 < f1 / f < -1, -25 < f2 / f < -10, 1 < f3 / f < 3, 4 < f4 / f < 9, 6 < f56 / f < 11, and 4 < f7 / f < 10.

[0020] In an embodiment, the refractive index of the first lens is n1, the refractive index of the second lens is n2, the refractive index of the third lens is n3, the refractive index of the fourth lens is n4, the refractive index of the fifth lens is n5, the refractive index of the sixth lens is n6, and the refractive index of the seventh lens is n7, wherein:

[0021] 1.80 ≤ n1, 1.75 ≤ n2 ≤ 2.10, 1.75 ≤ n3 ≤ 2.10, 1.60 ≤ n4 ≤ 1.70, 1.55 ≤ n5 ≤ 1.60, 1.90 ≤ n6 ≤ 2.00, 1.60 ≤ n7 ≤ 1.70.

[0022] In an embodiment, D1 is the aperture of the first lens, r2 is the radius of curvature of the image-side surface of the first lens, r4 is the radius of curvature of the object-side surface of the second lens, r5 is the radius of curvature of the image-side surface of the second lens, r6 is the radius of curvature of the object-side surface of the third lens, r7 is the radius of curvature of the image-side surface of the third lens, r8 is the radius of curvature of the object-side surface of the fourth lens, r9 is the radius of curvature of the image-side surface of the fourth lens, r11 is the radius of curvature of the object-side surface of the fifth lens, r12 is the radius of curvature of the image-side surface of the fifth lens, r13 is the radius of curvature of the image-side surface of the sixth lens, r14 is the radius of curvature of the object-side surface of the seventh lens, and r15 is the radius of curvature of the image-side surface of the seventh lens, wherein:

[0023] 1 < D1 / r2 < 2, 0.5 ≤ r5 / r4 ≤ 1.5, -6 ≤ r7 / r6 ≤ -1, 1 ≤ r8 / r9 ≤ 6, -2 ≤ r12 / r11 ≤ -0.1, 2 ≤ r13 / r12 ≤ 5, -4 ≤ r15 / r14 ≤ -2.

[0024] The utility model also proposes a vehicle, including above -mentioned vehicle ADAS camera, vehicle ADAS camera has opposite setting along the optical axis direction and the like side, vehicle ADAS camera includes the first lens group of positive refractive power and the second lens group of positive refractive power arranged in proper order from the object side to the image side, all lenses in first lens group and second lens group are arranged as glass spherical lens, the focal length of first lens group is f11, the focal length of second lens group is f22, the focal length of vehicle ADAS camera is f, wherein: 1.5 < f11 / f < 2.5, 3 < f22 / f < 6.5, so that the field of view angle of vehicle ADAS camera reaches 130 DEG above, the aperture number F value reaches 1.8, and the resolving power reaches three million pixels.

[0025] The technical solution provided by this utility model, by setting the second lens group with positive optical power, undertakes a large 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 light beam imaging on the image plane; by setting all lenses in the first lens group and the second lens group as glass spherical lenses, aberrations are effectively improved to maintain high resolution, and high image quality can be obtained in low-light or nighttime environments. Furthermore, the glass material is beneficial to the lens's temperature adaptability, allowing the lens to work normally under various conditions. By limiting the relationship between the focal length of each lens group and the focal length of the lens, various aberrations are corrected, improving edge image quality and resulting in high image quality. Regarding the aperture, the f-value satisfies 1.8≤f≤2.0, so that the field of view of the automotive ADAS lens reaches more than 130°, providing a wider field of view and more complete data information. With an aperture of f-value of 1.8, the lens can also achieve clear imaging in low light, and the resolution reaches three million pixels. This achieves an automotive ADAS lens with a large angle of view, large aperture, small chromatic aberration, small distortion, and clear imaging even in low-light environments. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of an embodiment of the vehicle-mounted ADAS lens provided by this utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of the MTF curve of a vehicle-mounted ADAS camera in the visible light band.

[0029] Figure 3 for Figure 1 A schematic diagram of the defocusing of a vehicle-mounted ADAS lens at 25°C;

[0030] Figure 4 for Figure 1 A schematic diagram of the lateral chromatic aberration curve of a vehicle-mounted ADAS lens in the visible light band;

[0031] Figure 5 for Figure 1 A schematic diagram of field curvature distortion in a vehicle-mounted ADAS camera;

[0032] Figure 6 A schematic diagram of another embodiment of the vehicle-mounted ADAS lens provided by this utility model;

[0033] Figure 7 For Figure 6 The MTF curve schematic diagram of the vehicle-mounted ADAS lens in the visible light band;

[0034] Figure 8 For Figure 6 The defocus schematic diagram of the vehicle-mounted ADAS lens at 25 DEG C;

[0035] Figure 9 For Figure 6 The lateral chromatic aberration curve schematic diagram of the vehicle-mounted ADAS lens in the visible light band;

[0036] Figure 10 For Figure 6 The field curvature distortion schematic diagram of the vehicle-mounted ADAS lens.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1000, vehicle-mounted ADAS lens;1, first lens;2, second lens;3, third lens;4, fourth lens;5, fifth lens;6, sixth lens;7, seventh lens;8, diaphragm;9, filter;10, protective glass;11, first lens group;22, second lens group;A, vignetting diaphragm.

[0039] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with the embodiments. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0041] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0042] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0043] With the technical innovation and vigorous promotion of intelligent driving cars, the demand for driving safety of consumers and car manufacturers is increasing. As an important part of intelligent driving, the advanced intelligent auxiliary system (ADAS) equipped with special high-definition camera can effectively reduce the occurrence of danger in driving process and provide safety protection for drivers.

[0044] However, in the current industry, most of the vehicle-mounted ADAS lens aperture is above 2.0, the image surface corresponding to the field of view angle is small, the resolution is about two million pixels, the color difference is large, the distortion is large, and the stray light is much. In addition, when used in low-illumination conditions such as night, the image clarity is insufficient, and the image quality is low. At the same time, most of the lens architecture will use glass aspherical surface, resulting in high cost, heavy volume, complex structure and other shortcomings. These problems show that the vehicle-mounted ADAS lens still needs to be improved in technology and performance.

[0045] The main purpose of the present application is to provide a vehicle-mounted ADAS lens and a car, which can provide a vehicle-mounted ADAS lens with large angle of view, large aperture, high image quality and clear imaging in weak light environment.

[0046] Please refer to Figure 1 and Figure 6The utility model provides a kind of vehicle ADAS lens 1000, the vehicle ADAS lens 1000 has object side and image side being oppositely arranged along optical axis direction, the vehicle ADAS lens 1000 includes the first lens group 11 with positive refractive power and the second lens group 22 with positive refractive power arranged sequentially from object side to image side, all lenses in the first lens group 11 and the second lens group 22 are arranged as glass spherical lens, the focal length of the first lens group 11 is f11, the focal length of the second lens group 22 is f22, the focal length of the vehicle ADAS lens 1000 is f, wherein:1.5

[0047] The technical scheme of the utility model, the technical scheme provided by the utility model, by setting the second lens group 22 with positive refractive power, undertake the refractive power of system bigger, change the propagation direction of light beam, correct the aberration of axis outside field of view, more conducive to the imaging of light beam on image plane;By setting all lenses in the first lens group 11 and the second lens group 22 as glass spherical lens, effectively improve aberration, to keep high resolution, can obtain higher imaging quality in low illumination or night environment, and glass material is also conducive to the temperature adaptability of lens, so that the lens can work normally under various working conditions, by limiting the relationship between the focal length of each lens group and the focal length of lens, various aberrations are corrected, the edge quality is improved, and the imaging quality is high.In terms of aperture, the aperture value f satisfies 1.8≤f≤2.0, so that the field of view of the vehicle ADAS lens 1000 reaches more than 130°, the field of view is wider, the data information is more sufficient, the aperture number F value reaches 1.8, the lens can also be clearly imaged under weak light, the resolving power reaches three million pixels, realizing a vehicle ADAS lens 1000 with large viewing angle, large aperture, small chromatic aberration, small distortion and clear imaging under weak light environment.

[0048] Further, the vehicle ADAS lens 1000 also includes a diaphragm 8, and the diaphragm 8 is arranged between the first lens group 11 and the second lens group 22.The diaphragm 8 limits the light beam aperture on the optical axis, blocks part of the light, thereby reducing the light spot and improving the image contrast, and also can expand the target surface and improve the image quality.According to actual conditions, the light flux of the diaphragm 8 is adjusted, which helps to further improve the imaging quality.

[0049] Further, the vehicle-mounted ADAS lens 1000 further comprises a filter 9 arranged on one side of the second lens group 22 towards the image side direction for filtering out stray light of non-working wave bands, and a protective glass 10 arranged on one side of the filter 9 towards the image side direction. The filter 9 can reduce light noise, and reduce the difficulty of subsequent photoelectric module processing. The filter 9 can also be used to adjust the color degree of the final imaging. The protective glass 10 can play a role in waterproofing, dustproofing, and protecting the lens, thereby enhancing the anti-interference ability of the vehicle-mounted ADAS lens 1000 and improving the imaging quality.

[0050] In an embodiment of the present application, please refer to Figure 1 and Figure 5 Specifically, the first lens group 11 comprises, arranged in order from the object side to the image side, a first lens 1 with negative focal power, a second lens group 22 with negative focal power, a third lens 3 with positive focal power, and a fourth lens 4 with positive focal power; the second lens group 22 comprises, arranged in order from the object side to the image side, a fifth lens 5 with positive focal power, a sixth lens 6 group with negative focal power, and a seventh lens 7 with positive focal power.

[0051] It should be noted that the vehicle-mounted ADAS lens 1000 further comprises a vignetting diaphragm a, which can adjust or limit the distribution of light entering the lens to ensure more uniform illumination in the entire field of view, thereby avoiding unnecessary light loss and optimizing the imaging quality. The present application does not limit the specific position of the vignetting diaphragm a. In the two embodiments provided by the present application, please refer to Figure 1 and Figure 6 In the first embodiment, the vignetting diaphragm a is arranged between the first lens 1 and the second lens 2, and in the second embodiment, the vignetting diaphragm a is arranged between the third lens 3 and the fourth lens 4.

[0052] Further, in order to improve the image quality of the optical system, reduce light energy loss, increase imaging clarity, protect the scale surface, and further optimize the processing flow to meet the design requirements, in the present embodiment, the fifth lens 5 and the sixth lens 6 are glued together. In this way, the use of glue is reasonable and the focal power is reasonably distributed, which well corrects the aberration and achieves the effect of high and low temperature non-thermalization. It also effectively reduces chromatic aberration to achieve the effect of clear imaging of the visible light wave band and the near-infrared wave band at the same time.

[0053] In an embodiment of the utility model, the focal length of first lens 1 is f1, the focal length of second lens 2 is f2, the focal length of third lens 3 is f3, the focal length of fourth lens 4 is f4, the focal length of the lens that fifth lens 5 and sixth lens 6 cement is f56, the focal length of seventh lens 7 is f7, and the focal length of vehicle-mounted ADAS camera lens 1000 is f, wherein:-2

[0054] In an embodiment of the utility model, the refractive index of first lens 1 is n1, the refractive index of second lens 2 is n2, the refractive index of third lens 3 is n3, the focal refractive index of fourth lens 4 is n4, the refractive index of fifth lens 5 is n5, the refractive index of sixth lens 6 is n6, and the refractive index of seventh lens 7 is n7, wherein: 1.80≤n1, 1.75≤n2≤2.10, 1.75≤n3≤2.10, 1.60≤n4≤1.70, 1.55≤n5≤1.60, 1.90≤n6≤2.00, and 1.60≤n7≤1.70. This embodiment is a preferred embodiment, wherein the refractive indexes of different lenses are combined and distributed reasonably, so that vehicle-mounted ADAS camera lens 1000 has the performance of low cost, high pixel and clear imaging in weak light environment. By limiting 1.80≤n1, light in a wide range of view angles can be effectively converged, the aperture of first lens 1 is reduced, and the optical lens is miniaturized.

[0055] In an embodiment of the utility model, D1 is the aperture of first lens 1, r2 is the curvature radius of image side surface of first lens 1, r4 is the curvature radius of object side surface of second lens 2, r5 is the curvature radius of image side surface of second lens 2, r6 is the curvature radius of object side surface of third lens 3, r7 is the curvature radius of image side surface of third lens 3, r8 is the curvature radius of object side surface of fourth lens 4, r9 is the curvature radius of image side surface of fourth lens 4, r11 is the curvature radius of object side surface of fifth lens 5, r12 is the curvature radius of image side surface of fifth lens 5, r13 is the curvature radius of image side surface of sixth lens 6, r14 is the curvature radius of object side surface of seventh lens 7, r15 is the curvature radius of image side surface of seventh lens 7, wherein: 1

[0056] It needs to be explained that the basic parameter table of vehicle ADAS lens 1000 in an embodiment provided by the utility model is shown as table 1, wherein the unit of curvature is mm -1, and the unit of thickness is mm.

[0057] Table 1

[0058]

[0059]

[0060] Please refer to Figure 2 It is the MTF curve schematic diagram of vehicle ADAS lens 1000 under visible light waveband in the embodiment, and it shows the imaging quality of three kinds of wavelength light, wherein the horizontal coordinate represents the line logarithm, and the vertical coordinate represents the resolving power, wherein the higher the value of vertical coordinate is, the stronger the resolving power is, and the higher the image quality restoration degree is, wherein the MTF value is all greater than 0.3, and basically meets the imaging quality requirement.

[0061] Please refer to Figure 3 It is the defocus schematic diagram of vehicle ADAS lens 1000 under 25 DEG C in the embodiment, wherein the horizontal coordinate is defocus amount, and takes millimeter as the unit, and the vertical coordinate is contrast, fromFigure 3 It can be seen that the lens is defocused by no more than 0.01mm, and basically reaches a state of no defocus.

[0062] Please refer to Figure 4 , which is a lateral chromatic aberration curve diagram of the vehicle-mounted ADAS lens 1000 in the visible light band in the embodiment, from Figure 4 It can be seen that the maximum lateral chromatic aberration is controlled within the range of 5μm, which shows that the imaging quality of the lens is high, and the chromatic aberration is well corrected.

[0063] Please refer to Figure 5 , which is a field curvature distortion diagram of the vehicle-mounted ADAS lens 1000 in the embodiment, different colors represent different wavelengths, and the right curve of the same color is the meridian direction, and the left curve is the sagittal field curvature, from the figure, the sagittal field curvature of the lens is not greater than 0.06mm, which shows that the lens can correct the chromatic aberration well. Another curve in the figure is the distortion curve of the system, the distortion does not affect the sharpness of the system, but will cause the image deformation of the system, from the figure, the optical distortion of the lens is low.

[0064] In the embodiment, the total optical length of the vehicle-mounted ADAS lens 1000 is 23.1mm, the aperture value is 1.85, and the maximum image surface is 7.5mm, wherein the Abbe number of the first lens 1, the fourth lens 4 and the fifth lens 5 is greater than 50, which is a high-dispersion glass lens, and the refractive index of the first lens 1, the second lens 2, the third lens 3 and the sixth lens 6 is greater than 1.8, which is a high-refractive-index lens, which ensures that various aberrations of the lens are corrected, improves the edge quality, has high imaging quality, and has a large field of view of the lens, has the characteristics of a large aperture, and can also clearly image in weak light.

[0065] The following are specific numerical values of related parameters in the embodiment, D1 / r2=1.530, r5 / r4=1.343, r7 / r6=-5.239, r8 / r9=4.352, r12 / r11=-0.250, r13 / r12=2.660, r15 / r14=-2.988, f1 / f=-1.475, f2 / f=-13.309, f3 / f=2.577, f4 / f=4.631, f56 / f=8.714, f7 / f=8.525.

[0066] It should be noted that the basic parameter table of the vehicle-mounted ADAS lens 1000 in another embodiment of the utility model is shown in Table 2, wherein the unit of curvature is mm -1 , and the unit of thickness is mm.

[0067] Table 2

[0068]

[0069] Please refer to Figure 7 This is a schematic diagram of the MTF curve of the vehicle-mounted ADAS lens 1000 in the visible light band in this embodiment. It shows the imaging quality of three wavelengths of light. The horizontal axis represents the number of line pairs, and the vertical axis represents the resolution capability. The higher the value of the vertical axis, the stronger the resolution capability and the higher the image quality reproduction. The MTF values ​​are all greater than 0.4, which basically meets the imaging quality requirements.

[0070] Please refer to Figure 8 This is a schematic diagram of the defocusing of the vehicle-mounted ADAS lens 1000 at 25°C in this embodiment. The horizontal axis represents the defocusing amount in millimeters, and the vertical axis represents the contrast ratio. Figure 3 It can be seen that the lens defocuses by no more than 0.01mm, which is basically enough to achieve a non-defocus state.

[0071] Please refer to Figure 9 This is a schematic diagram of the lateral chromatic aberration curve of the vehicle-mounted ADAS lens 1000 in the visible light band in this embodiment. Figure 4 It can be seen that the maximum lateral chromatic aberration is controlled within the range of 5μm, indicating that the image quality of this lens is high and the chromatic aberration is well corrected.

[0072] Please refer to Figure 10 The figure shows the field curvature distortion of the vehicle-mounted ADAS lens 1000 in this embodiment. Different colors represent different wavelengths. For the same color, the right curve represents the meridional direction, and the left curve represents the sagittal field curvature. The figure shows that the sagittal field curvature of this lens is no greater than 0.06mm, indicating that this lens can effectively correct chromatic aberration. The other curve in the figure is the system distortion curve. Distortion does not affect the system's sharpness, but it can cause image distortion. The figure shows that the optical distortion of this lens is low.

[0073] In this embodiment, the optical assembly of the vehicle-mounted ADAS lens 1000 is 23.2mm, the aperture value is 1.83, and the maximum image plane is 7.5mm. The fifth lens 5 and the seventh lens 7 have an Abbe number greater than 50 and are high-dispersion glass lenses. The first lens 1, the second lens 2, the third lens 3, and the sixth lens 6 have a refractive index greater than 1.8 and are high-refractive-index lenses. This ensures that various aberrations of the lens are corrected, improves edge image quality, and results in high image quality. In addition, the lens has a large field of view and a large aperture, enabling clear imaging even in low light.

[0074] The following are specific numerical values of relevant parameters in the embodiment, D1 / r2=1.374, r4 / r5=1.222, r7 / r6=-0.995, r8 / r9=1.000, r12 / r11=-0.226, r13 / r12=2.432, r14 / r15=-2.692, f1 / f=-1.399, f2 / f=-23.237, f3 / f=1.865, f4 / f=8.363, f56 / f=9.548, f7 / f=5.511.

[0075] The utility model also proposes a vehicle, the vehicle includes the vehicle ADAS camera 1000 of above, because the vehicle includes the vehicle ADAS camera 1000, the specific structure of this vehicle ADAS camera 1000 refers to the above embodiment, because the vehicle ADAS camera 1000 of this vehicle adopts all technical schemes of the above all embodiments, therefore at least has all beneficial effects brought by the technical scheme of the above embodiment, here will not repeat.

[0076] The above is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the attached drawings, or direct / indirect application in other related technical fields under the technical concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A vehicle-mounted ADAS lens, characterized in that, The vehicle-mounted ADAS lens has an object side and an image side oppositely arranged along an optical axis direction, and comprises a first lens group with positive focal power, a second lens group with positive focal power, which are arranged in sequence from the object side to the image side, all the lenses in the first lens group and the second lens group are arranged as glass spherical lenses, the focal length of the first lens group is f11, the focal length of the second lens group is f22, and the focal length of the vehicle-mounted ADAS lens is f, wherein 1.5 < f11 / f < 2.5 and 3 < f22 / f < 6.5, so that the field of view of the vehicle-mounted ADAS lens reaches more than 130°, the F value of the aperture number reaches 1.8, and the resolution reaches 3 million pixels.

2. The vehicle-mounted ADAS lens of claim 1, wherein, The vehicle-mounted ADAS lens further comprises a diaphragm arranged between the first lens group and the second lens group.

3. The vehicle-mounted ADAS lens of claim 1, wherein, The vehicle-mounted ADAS lens further comprises a filter arranged on one side of the second lens group in the direction of the image side for filtering stray light in a non-working wave band, and a protective glass arranged on one side of the filter in the direction of the image side.

4. The vehicle-mounted ADAS lens of claim 1, wherein, The first lens group comprises a first lens with negative focal power, a second lens group with negative focal power, a third lens with positive focal power, and a fourth lens with positive focal power arranged in sequence from the object side to the image side. The second lens group comprises a fifth lens with positive focal power, a sixth lens group with negative focal power, and a seventh lens with positive focal power arranged in sequence from the object side to the image side.

5. The vehicle-mounted ADAS lens of claim 4, wherein, The fifth lens and the sixth lens are cemented together, the focal length of the cemented lens of the fifth lens and the sixth lens is f56, and the focal length of the vehicle-mounted ADAS lens is f, wherein 5 < f56 / f < 10.

6. The vehicle-mounted ADAS lens of claim 5, wherein, The first lens is a meniscus lens, and the object side surface thereof is a convex surface. The second lens is a meniscus lens, and the object side surface thereof is a concave surface. The third lens is a double convex lens. The fourth lens is a meniscus lens, and the object side surface thereof is a concave surface. The fifth lens is a double convex lens. The sixth lens is a meniscus lens, and the object side surface thereof is a concave surface. The seventh lens is a double convex lens.

7. The vehicle-mounted ADAS lens of claim 6, wherein, 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 cemented lens of the fifth lens and the sixth lens is f56, the focal length of the seventh lens is f7, and the focal length of the vehicle-mounted ADAS lens is f, wherein -2 < f1 / f < -1, -25 < f2 / f < -10, 1 < f3 / f < 3, 4 < f4 / f < 9, 6 < f56 / f < 11, and 4 < f7 / f < 10.

8. The vehicle-mounted ADAS lens of claim 6, wherein, The refractive index of the first lens is n1, the refractive index of the second lens is n2, the refractive index of the third lens is n3, the focal refractive index of the fourth lens is n4, the refractive index of the fifth lens is n5, the refractive index of the sixth lens is n6, and the refractive index of the seventh lens is n7, wherein: 1.80≤n1, 1.75≤n2≤2.10, 1.75≤n3≤2.10, 1.60≤n4≤1.70, 1.55≤n5≤1.60, 1.90≤n6≤2.00, and 1.60≤n7≤1.

70.

9. The vehicle-mounted ADAS lens of claim 6, wherein, D1 is the aperture of the first lens, r2 is the curvature radius of the image-side surface of the first lens, r4 is the curvature radius of the object-side surface of the second lens, r5 is the curvature radius of the image-side surface of the second lens, r6 is the curvature radius of the object-side surface of the third lens, r7 is the curvature radius of the image-side surface of the third lens, r8 is the curvature radius of the object-side surface of the fourth lens, r9 is the curvature radius of the image-side surface of the fourth lens, r11 is the curvature radius of the object-side surface of the fifth lens, r12 is the curvature radius of the image-side surface of the fifth lens, r13 is the curvature radius of the image-side surface of the sixth lens, r14 is the curvature radius of the object-side surface of the seventh lens, and r15 is the curvature radius of the image-side surface of the seventh lens, wherein: 1 10. A vehicle characterized by comprising: A vehicle-mounted ADAS lens comprising any one of claims 1 to 9.

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