CN212873046U - Vehicle-mounted infrared imaging camera lens of fatigue driving monitoring and early warning system - Google Patents
Vehicle-mounted infrared imaging camera lens of fatigue driving monitoring and early warning system Download PDFInfo
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- CN212873046U CN212873046U CN202022223360.1U CN202022223360U CN212873046U CN 212873046 U CN212873046 U CN 212873046U CN 202022223360 U CN202022223360 U CN 202022223360U CN 212873046 U CN212873046 U CN 212873046U
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Abstract
The utility model relates to a vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens, the object space from camera lens is to image planes in proper order: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; BBAR films are plated on the image surface and the object surface of the lens; step parts matched with the outer frame are formed on the image surface of the first lens by the first lens and the second lens, and the radial length of the first lens is longer than that of the second lens; the radial length of the third lens is equal to that of the fourth lens; the image surface and the object surface of the third lens are both provided with inclined surface parts matched with the outer frame; the image surface of the sixth lens is provided with an inclined surface part matched with the outer frame. The utility model discloses plate the BBAR membrane that reduces the reverberation on the optical mirror surface, can effectively avoid the production of ghost, improve the imaging quality of camera lens in the highlight environment. The utility model discloses weight reduction, intensity is high. The utility model discloses the distortion of camera lens is little, can effectively take out the truest photo.
Description
Technical Field
The utility model relates to an early warning system camera lens, concretely relates to on-vehicle infrared imaging fatigue driving of high imaging quality, structure simple relatively, image plane stray light energy is few, can effectively take out truest photo and keep watch on early warning system camera lens.
Background
Safety is a basic pursuit of people, after a certain economic foundation exists, the consciousness forms of people are also changed, and higher-level and wider safety requirements can be pursued gradually. Compared with the insurance market more than ten years ago, most people now have insurance consciousness, and the insurance is not so hard, which is the inevitable result of social progress. The same applies to the safety of automobiles, and the problems of existing automobiles are solved firstly, and then the safety problems in various aspects are solved, from driving safety to parking safety, parking safety and the like.
With the development of the automobile industry in China, the automobile navigation market is gradually mature, consumers are pursuing safety, convenience and use more and more, according to the trend, most automobile manufacturers in China have the intention and action of taking the panoramic looking-around system as standard configuration on luxury saloon cars, and the configuration is a trend of many automobiles in the future.
The defects of the traditional technology are as follows: (1) the lens manufactured by the traditional technology can generate ghost images when being shot under strong light; (2) the lens manufactured by the traditional technology has a small aperture, and the quality of the picture shot in a dark light environment is poor, so that the lens is not suitable for all-weather use; (3) the lens manufactured by the traditional technology has low strength, is used under relatively severe conditions, and is easy to damage.
The reasons for the above disadvantages are: (1) the lens of the camera is composed of a plurality of lenses, the lenses are made of materials such as glass or plastic, and if no special treatment is carried out, the surface of the lens can reflect about 5% of incident light. When strong light enters the lens, multiple reflections are generated inside each lens and the camera, so that the phenomenon that people see in actual shooting is ghost. (2) The lens is made into a large aperture and is limited by a plurality of factors, the larger the aperture is, the more complicated the lens is required for clear imaging, each lens structure has a limit aperture, the larger the aperture is, the more complicated the structure is, and the complicated structure brings a plurality of negative effects. Among them is the most influential: loss caused by multiple reflections; ② the requirement of assembly precision is very high.
SUMMERY OF THE UTILITY MODEL
To the above problem, the main objective of the present invention is to provide a camera lens of a vehicle-mounted infrared imaging fatigue driving monitoring and early warning system, which has high imaging quality, relatively simple structure, less stray light energy of image plane, and can effectively shoot the truest photo.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens comprises: the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens.
The object space to the image plane of the camera lens are as follows: the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens.
BBAR films are plated on the image surface and the object surface of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens.
After the first lens and the second lens are installed, step portions matched with the outer frame are formed on the image surface of the first lens and the image surface of the second lens, and the radial length of the first lens is longer than that of the second lens.
The radial length of the third lens is equal to the radial length of the fourth lens.
The image surface and the object surface of the third lens are both provided with inclined surface parts matched with the outer frame.
The image surface of the sixth lens is provided with an inclined surface part matched with the outer frame.
The radial length of the fifth lens is greater than the radial length of the fourth lens.
The radial length of the fifth lens is greater than the radial length of the sixth lens.
In a specific embodiment of the present invention, the object plane of the first lens is a spherical surface, the curvature radius is 13.7646mm, and the center thickness of the first lens is 0.40 mm; the image plane of the first lens is spherical, the curvature radius is 2.9109mm, and the distance between the image plane of the first lens and the object plane of the second lens is 0.
In a specific embodiment of the present invention, the object plane of the second lens is a spherical surface, the curvature radius is 2.9109mm, and the center thickness of the second lens is 1.117 mm; the image plane of the second lens is a spherical surface, the curvature radius is 15.1627mm, and the distance between the image plane of the second lens and the object plane of the third lens is 0.46 mm.
In a specific embodiment of the present invention, the object plane of the third lens is a spherical surface, the curvature radius is 4.0715mm, and the center thickness of the third lens is 0.4 mm; the image plane of the third lens is a spherical surface, the curvature radius is 8.0419mm, and the distance from the image plane of the third lens to the object plane of the fourth lens is 0.48 mm.
In a specific embodiment of the present invention, the object plane of the fourth lens is a spherical surface, the curvature radius is 8.6213mm, and the center thickness of the fourth lens is 1.035 mm; the image plane of the fourth lens is a spherical surface, the curvature radius is 3.5727mm, and the distance from the image plane of the fourth lens to the object plane of the fifth lens is 0.05 mm.
In a specific embodiment of the present invention, the object plane of the fifth lens is a spherical surface, the curvature radius is 12.4565mm, and the center thickness of the fifth lens is 0.853 mm; the image plane of the fifth lens is a plane, and the distance from the image plane of the fifth lens to the object plane of the sixth lens is 6.21 mm.
In a specific embodiment of the present invention, the object plane and the image plane of the sixth lens are both flat planes, and the center thickness of the sixth lens is 0.853 mm.
The utility model discloses an actively advance the effect and lie in: the utility model provides a vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens has following advantage: the utility model provides a do the coating processing of preventing light reflection to every optical lens piece, plate BBAR membrane in order to reduce the reverberation on optical mirror surface, can effectively avoid the production of ghost, improve the imaging quality of camera lens in the highlight environment.
The utility model discloses the lens cone uses aluminum product AL6061, has both alleviateed weight, has improved the intensity of camera lens again. The waterproof and dustproof grade can reach IP69 through the reliability test of vehicle-mounted application; the utility model discloses the partial surface of lens plates BBAR membrane in order to reduce the reverberation, absorbs and has disperseed the inside stray light that produces of camera lens at to a great extent, makes the stray light energy on image plane reduce by a wide margin. The utility model discloses the distortion of camera lens is little, can effectively take out the truest photo. The utility model discloses a can increase the luminous volume, reduce the depth of field, make the picture brighter, do benefit to the night scene and shoot.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged view of fig. 1 at a.
Fig. 3 is an enlarged view of fig. 1 at B.
Fig. 4 is an enlarged view of fig. 1 at C.
The utility model discloses the name that well reference numeral corresponds:
the lens comprises a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5 and a sixth lens 6.
Detailed Description
The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.
Fig. 1 is a schematic view of the overall structure of the present invention, as shown in fig. 1, the camera lens of the vehicle-mounted infrared imaging fatigue driving monitoring and early warning system provided by the present invention comprises a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a sixth lens 6; the object space to the image plane of the camera lens are as follows: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5 and a sixth lens 6; BBAR films are plated on the image surface and the object surface of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens 6.
Fig. 2 is an enlarged view of fig. 1 at a. As shown in fig. 2: after the first lens 1 and the second lens 2 are installed, step parts matched with the outer frame are formed on the image surface of the first lens 1 by the first lens 1 and the second lens 2, and the radial length of the first lens 1 is longer than that of the second lens 2. The radial length of the third lens 3 is equal to the radial length of the fourth lens 4.
Fig. 3 is an enlarged view of fig. 1 at B. As shown in fig. 3: the image plane and the object plane of the third lens 3 are both provided with inclined plane parts matched with the outer frame.
Fig. 4 is an enlarged view of fig. 1 at C. As shown in fig. 4: the image plane of the sixth lens 6 is provided with a slope part matched with the outer frame.
The radial length of the fifth lens 5 is larger than that of the fourth lens 4; the radial length of the fifth lens 5 is greater than the radial length of the sixth lens 6.
The detailed parameters of the design are listed in table 1, the first row lists the main parameters of the lens, focal length F7.5 mm, F/#2.8, total optical track length TTL 11.5, and image height h 3.55mm at a full field angle of 33 °.
The title column of table 1 lists: "surface", "type", "radius of curvature", "thickness", "refractive index" and "Abbe's number". The lens element material is defined by a refractive index and an abbe number. In Table 1, a blank cell in the "refractive index" column indicates that the value in the "thickness" cell next to it is the distance to the next lens surface vertex. The "refractive index" column provides the refractive index of the lens material at a wavelength of 632.8 nm.
In Table 1, the radius of curvature of the object plane is infinite, i.e., the plane, at infinity from the center vertex of the next surface (object plane of first lens 1).
The surface 1 is the object plane of the first lens 1, the surface is a spherical surface, the curvature radius is 13.7646mm, the distance from the central vertex of the next surface (the image plane of the first lens 1) is 0.40mm, namely the central thickness of the first lens 1 is 0.40mm, the refractive index is 1.69551, and the Abbe coefficient is 39.22.
The surface 2 is the image surface of the first lens 1, since the distance between the surface and the object plane of the second lens 2 is 0 and the curvature radius of the surface is the same, the surface 2 is the image surface of the first lens 1 and the object plane of the second lens 2, the surface is a spherical surface, the curvature radius is 2.9109mm, the distance from the next surface (the image surface of the second lens 2) is 1.117mm, the center thickness of the second lens 2 is 1.117mm, the refractive index is 1.81082, and the Abbe is 35.25.
The surface 3 is the image surface of the second lens 2, the surface is a spherical surface, the curvature radius is 15.1627mm, and the distance from the next surface (the object surface of the third lens 3) is 0.46 mm.
The surface 4 is the object plane of the third lens 3, the surface is a spherical surface, the curvature radius is 4.0715, the distance from the central vertex of the next surface (the image plane of the third lens 3) is 0.4mm, namely the central thickness of the third lens 3 is 0.4mm, the refractive index is 1.74666, and the Abbe coefficient is 23.83.
The surface 5 is the image surface of the third lens 3, the surface is a spherical surface, the curvature radius is 8.0419mm, and the distance from the next surface (the object surface of the fourth lens 4) is 0.48 mm.
The surface 6 is the object plane of the fourth lens 4, the surface is a spherical surface, the curvature radius is 8.6213mm, the distance between the central vertex of the surface and the central vertex of the next surface (the image plane of the fourth lens 4) is 1.035mm, namely the central thickness of the fourth lens 4 is 1.035mm, the refractive index is 1.716, and the Abbe coefficient is 46.54.
The surface 7 is the image surface of the fourth lens 4, which is spherical, and has a radius of curvature of 3.5727mm, which is 0.05mm from the next surface (the object surface of the fifth lens 5).
The surface 8 is the object plane of the fifth lens 5, the surface is a spherical surface, the curvature radius is 12.4565mm, the center vertex of the surface is 0.853mm away from the center vertex of the next surface (the image plane of the fifth lens 5), namely the center thickness of the fifth lens 5 is 0.853mm, the refractive index is 1.755000, and the Abbe coefficient is 52.32.
The surface 9 is the image plane of the fifth lens 5, which is a plane with infinite radius of curvature, 6.21mm from the next surface (image plane of the sixth lens 6).
The surfaces 10 and 11 are the object plane and the image plane of the sixth lens 6, and the object plane and the image plane of the sixth lens 6 are both flat and have a thickness of 0.853 mm.
Surface 12 is the lens imaging surface.
The utility model discloses all do the coating processing of preventing light reflection to every optical lens piece, plate BBAR membrane in order to reduce the reverberation on the optical mirror surface, can effectively avoid the production of ghost, improve the imaging quality of camera lens in the highlight environment.
The utility model discloses make the structure of camera lens simple relatively. Even if it is in overcast and rainy day, night, its formation of image quality also can obtain effectively guaranteeing.
Because the lighting conditions are much and disordered during the driving process, the camera only takes the images in the wavelength of the light source of the system, and the interference of other spectrum images is reduced. The lens adopts a super-wide antireflection film, ensures the light transmittance of an infrared section, reduces reflected stray light, cuts off the imaging of visible light by using a color filter for cutting off the infrared light and the visible light, and only aims at the imaging of light with the wavelength near 951nm so as to realize the imaging shooting of a specific spectrum section.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a tired driving of on-vehicle infrared imaging keeps watch on early warning system camera lens which characterized in that: the vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens;
the object space to the image plane of the camera lens are as follows: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens;
BBAR films are plated on the image surface and the object surface of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens;
after the first lens and the second lens are installed, step parts matched with the outer frame are formed on the image surface of the first lens and the second lens, and the radial length of the first lens is longer than that of the second lens;
the radial length of the third lens is equal to that of the fourth lens;
the image surface and the object surface of the third lens are both provided with inclined surface parts matched with the outer frame;
the image surface of the sixth lens is provided with an inclined surface part matched with the outer frame;
the radial length of the fifth lens is greater than that of the fourth lens;
the radial length of the fifth lens is greater than the radial length of the sixth lens.
2. The vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens as claimed in claim 1, wherein: the object plane of the first lens is a spherical surface, the curvature radius is 13.7646mm, and the center thickness of the first lens is 0.40 mm; the image plane of the first lens is spherical, the curvature radius is 2.9109mm, and the distance between the image plane of the first lens and the object plane of the second lens is 0.
3. The vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens as claimed in claim 1, wherein: the object plane of the second lens is a spherical surface, the curvature radius is 2.9109mm, and the center thickness of the second lens is 1.117 mm; the image plane of the second lens is a spherical surface, the curvature radius is 15.1627mm, and the distance between the image plane of the second lens and the object plane of the third lens is 0.46 mm.
4. The vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens as claimed in claim 1, wherein: the object plane of the third lens is a spherical surface, the curvature radius is 4.0715mm, and the center thickness of the third lens is 0.4 mm; the image plane of the third lens is a spherical surface, the curvature radius is 8.0419mm, and the distance from the image plane of the third lens to the object plane of the fourth lens is 0.48 mm.
5. The vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens as claimed in claim 1, wherein: the object surface of the fourth lens is a spherical surface, the curvature radius is 8.6213mm, and the center thickness of the fourth lens is 1.035 mm; the image plane of the fourth lens is a spherical surface, the curvature radius is 3.5727mm, and the distance from the image plane of the fourth lens to the object plane of the fifth lens is 0.05 mm.
6. The vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens as claimed in claim 1, wherein: the object plane of the fifth lens is a spherical surface, the curvature radius is 12.4565mm, and the center thickness of the fifth lens is 0.853 mm; the image plane of the fifth lens is a plane, and the distance from the image plane of the fifth lens to the object plane of the sixth lens is 6.21 mm.
7. The vehicle-mounted infrared imaging fatigue driving monitoring and early warning system camera lens as claimed in claim 1, wherein: the object plane and the image plane of the sixth lens are both planes, and the center thickness of the sixth lens is 0.853 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022223360.1U CN212873046U (en) | 2020-09-30 | 2020-09-30 | Vehicle-mounted infrared imaging camera lens of fatigue driving monitoring and early warning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022223360.1U CN212873046U (en) | 2020-09-30 | 2020-09-30 | Vehicle-mounted infrared imaging camera lens of fatigue driving monitoring and early warning system |
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| CN212873046U true CN212873046U (en) | 2021-04-02 |
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| CN202022223360.1U Active CN212873046U (en) | 2020-09-30 | 2020-09-30 | Vehicle-mounted infrared imaging camera lens of fatigue driving monitoring and early warning system |
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