CN212255856U - Short-distance forward-looking camera lens of high-pixel large-aperture automatic driving assistance system - Google Patents
Short-distance forward-looking camera lens of high-pixel large-aperture automatic driving assistance system Download PDFInfo
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- CN212255856U CN212255856U CN202020787933.0U CN202020787933U CN212255856U CN 212255856 U CN212255856 U CN 212255856U CN 202020787933 U CN202020787933 U CN 202020787933U CN 212255856 U CN212255856 U CN 212255856U
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Abstract
The utility model relates to a short-distance front-view camera lens of a high-pixel large-aperture automatic driving auxiliary system; comprises a first lens, a second lens, a third lens, a diaphragm hole, a fourth lens, a fifth lens, a sixth lens, protective glass, a cap and a lens cone; 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 diaphragm hole, a fourth lens, a fifth lens, a sixth lens and protective glass; the second lens, the third lens, the diaphragm hole, the fourth lens, the fifth lens and the sixth lens are all arranged in the lens cone; the protective glass is fixed on the camera lens close to the sixth lens; the cap is arranged at one end of the lens cone and clamps the first lens and the lens cone; and a mylar film and a space ring, or a mylar film or a space ring are arranged between adjacent lenses of the first lens, the second lens, the third lens, the diaphragm hole, the fourth lens and the fifth lens. The utility model discloses simple structure, light in weight, intensity is high, and the camera lens distortion becomes little, temperature toleration is good, the pixel is high.
Description
Technical Field
The utility model relates to a camera lens, concretely relates to simple structure, the big light ring autopilot auxiliary system low coverage of high pixel that the low thermal stability of pixel is good foresight camera lens of low, the distortion.
Background
From 2013, automatic driving becomes a serious game of a CES (international consumer electronics exhibition), not only can numerous host factories and component manufacturers centrally display related technologies and products for automatic driving, but also some IT enterprises such as music videos and google join in 'vehicle manufacturing' sports in two years, and the latest results of the IT enterprises are brought to the CES (international consumer electronics exhibition) in one year. Autopilot is one of the most prevalent future automotive technologies.
Under the influence of high-end automobile intellectualization, artificial intelligence, communication and sensing technology are continuously developed, and automatic driving is realized by one step more. Both scientific and technical enterprises and traditional automobile factories begin to invest a lot of research and development resources to promote full-automatic development. The 3D photographing technique is the most important in realizing automatic driving.
Currently, the major competitive manufacturers of optical products in the market include japanese physical light, taiwan optical factories, etc. But most of the products are of plastic structures and have small apertures. Therefore, only the first generation of vehicle-mounted lens has weak expansibility and poor stability in practical application, and cannot be applied to a high-end imaging system. Further, the product cost of japan optics corporation is high, the cost performance of market competition is weak, and taiwan lens quality is slightly poor.
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 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: firstly, loss caused by multiple reflections and secondly, very high requirements on assembly precision.
SUMMERY OF THE UTILITY MODEL
To the above problem, the main object of the present invention is to provide a short-distance front-view camera lens of high-pixel large-aperture automatic driving assistance system with simple structure, high pixel, low distortion and good thermal stability.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a high-pixel large-aperture automatic driving assistance system near-distance forward-looking camera lens; the close-up forward-looking camera lens of the high-pixel large-aperture automatic driving assistance system comprises:
the lens comprises a first lens, a second lens, a third lens, a diaphragm hole, a fourth lens, a fifth lens, a sixth lens, protective glass, a cap and a lens cone.
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 diaphragm hole, a fourth lens, a fifth lens, a sixth lens and protective glass; the second lens, the third lens, the diaphragm hole, the fourth lens, the fifth lens and the sixth lens are all arranged in the lens cone.
The protective glass is fixed on the camera lens close to the sixth lens; the cap is arranged at one end of the lens cone and clamps the first lens and the lens cone.
And a mylar film and a space ring, or a mylar film or a space ring are arranged between adjacent lenses of the first lens, the second lens, the third lens, the diaphragm hole, the fourth lens and the fifth lens.
In a specific embodiment of the present invention; the close-up forward-looking camera lens of the high-pixel large-aperture automatic driving assistance system further comprises: the first mylar film, the second mylar film, the first space ring, the second space ring, the third space ring, the fourth space ring and the pressing ring.
The first mylar film is positioned on a surface of the second lens between the second lens and the third lens; the second spacer is positioned between the second lens and the third lens and between the first mylar film and the third lens.
A gap is reserved between the first lens and the second lens; the first spacer is located in a space between the first lens and the second lens.
The second mylar film is positioned between the third lens and the fourth lens; the third space ring is positioned between the third lens and the fourth lens and between the second mylar film and the fourth lens.
The fourth spacer is positioned between the fourth lens and the fifth lens.
The pressing ring presses the sixth lens on the lens cone.
In a specific embodiment of the present invention; the lens barrel is made of aluminum AL 6061.
In a specific embodiment of the present invention; BBAR films for reducing reflected light are plated on the surfaces of the first lens, the second lens, the third lens, the diaphragm hole, the fourth lens, the fifth lens and the sixth lens.
The utility model discloses an actively advance the effect and lie in: the utility model provides a big light ring autopilot auxiliary system low coverage foresight camera lens of high pixel has following advantage: the utility model discloses simple structure, light in weight, intensity is high, and the distortion of camera lens is little, the temperature toleration is good, the pixel is high.
Drawings
Fig. 1 is a schematic view of the mechanical structure of the present invention.
Fig. 2 is a schematic view of the optical design of the present invention.
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 diaphragm hole 8, a fourth lens 4, a fifth lens 5, a sixth lens 6, protective glass 7, a cap 9 and a lens barrel 10; the device comprises a first mylar film 11, a second mylar film 12, a first space ring 13, a second space ring 14, a third space ring 15, a fourth space ring 16 and a pressing ring 17.
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 the mechanical structure schematic diagram of the present invention, fig. 2 is the optical design schematic diagram of the present invention, as shown in the above-mentioned figure: the utility model provides a short-distance front-view camera lens of a high-pixel large-aperture automatic driving auxiliary system; the close-up forward-looking camera lens of the high-pixel large-aperture automatic driving assistance system comprises: the lens comprises a first lens 1, a second lens 2, a third lens 3, a diaphragm hole 8, a fourth lens 4, a fifth lens 5, a sixth lens 6, protective glass 7, a cap 9 and a lens barrel 10; the object space to the image plane of the camera lens are as follows: the device comprises a first lens 1, a second lens 2, a third lens 3, a diaphragm hole 8, a fourth lens 4, a fifth lens 5, a sixth lens 6 and protective glass 7; the second lens 2, the third lens 3, the diaphragm hole 8, the fourth lens 4, the fifth lens 5 and the sixth lens 6 are all installed in the lens barrel 10.
The protective glass 7 is fixed on the camera lens close to the sixth lens 6; the cap 9 is mounted on one end of the lens barrel 10 and catches the first lens 1 and the lens barrel 10.
And a mylar film and a space ring, or a mylar film or a space ring are arranged between adjacent lenses of the first lens 1, the second lens 2, the third lens 3, the diaphragm hole 8, the fourth lens 4 and the fifth lens 5.
The high pixel big light ring autopilot assistance system short-distance forward-looking camera lens further comprises: a first mylar film 11, a second mylar film 12, a first space ring 13, a second space ring 14, a third space ring 15, a fourth space ring 16 and a pressing ring 17; the first mylar film 11 is positioned on the surface of the second lens 2 between the second lens 2 and the third lens 3; the second space ring 14 is positioned between the second lens 2 and the third lens 3 and between the first mylar film 11 and the third lens 3; a gap is reserved between the first lens 1 and the second lens 2; the first spacer 13 is located in the space between the first lens 1 and the second lens 2.
The second mylar film 12 is positioned between the third lens 3 and the fourth lens 4; the third space ring 15 is located between the third lens 3 and the fourth lens 4, and between the second mylar film 12 and the fourth lens 4, the fourth space ring 16 is located between the fourth lens 4 and the fifth lens 5, and the pressing ring 17 presses the sixth lens 6 on the lens barrel 10.
The lens barrel 10 of the present invention is made of AL 6061.
The utility model provides a BBAR membrane that reduces the reverberation has all been plated on the surface of first lens, second lens, third lens, diaphragm hole, fourth lens, fifth lens, sixth lens.
The detailed parameters of the design are listed in table 1, the first row lists the main parameters of the lens, focal length F is 14.98mm, F/#is1.8, total optical track length TTL is 65.03, and image height h at 120 ° full field angle is 3.84 mm.
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 588 nm.
In table 1, the radius of curvature of the object plane is infinite, i.e. the plane, infinitely distant from the central vertex of the next surface (object plane of the first lens 1);
the surface 1 is an object surface of the first lens 1, the surface is a spherical surface, the curvature radius is 148.9955, the distance from the central vertex of the next surface (the image surface of the first lens 1) is 0.9984mm, namely the central thickness of the first lens 1 is 0.9984mm, the refractive index is 1.729164, and the Abbe coefficient is 54.669031;
the surface 2 is the image surface of the first lens 1, the surface is a spherical surface, the curvature radius is 20.9206mm, and the distance from the next surface (the object surface of the second lens 2) is 0.8887 mm;
the surface 3 is an object surface of the second lens 2, the object surface is a spherical surface, the curvature radius is 5.7163, the distance from the central vertex of the next surface (the image surface of the second lens 2) is 2.50000mm, namely the central thickness of the second lens 2 is 2.5000mm, the refractive index is 1.809995, and the Abbe coefficient is 41.000073;
the surface 4 is the image surface of the second lens 2, the surface is a spherical surface, the curvature radius is 2.5072mm, and the distance from the next surface (the object surface of the third lens 3) is 1.8093 mm;
the surface 5 is an object surface of the third lens 3, the surface is a spherical surface, the curvature radius is 41.3504, the distance between the central vertex of the surface and the central vertex of the next surface (the image surface of the third lens 3) is 5.2940mm, namely the central thickness 5.2940mm of the third lens 3, the refractive index is 1.903663, and the Abbe coefficient is 31.419748;
the surface 6 is an image surface of the third lens 3, the surface is a spherical surface, the curvature radius is 12.3882, and the distance from the next surface (diaphragm aperture) is 3.8023 mm;
the surface 7 is a diaphragm hole surface, the diaphragm hole is a virtual surface, the thickness is infinitesimal, and the distance from the central vertex of the next lens surface (the fourth lens 4 object surface) is 0.0110 mm.
The surface 8 is the object plane of the fourth lens 4, the surface is a spherical surface, the curvature radius is 17.1084, 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 1.6711mm, namely the central thickness 1.6711mm of the sixth lens 6, the refractive index is 1.592824, and the Abbe coefficient is 68.624378;
the surface 9 is the image surface of the fourth lens 4, the surface is a spherical surface, the curvature radius is 10.5684mm, and the distance from the next surface (the object surface of the fourth lens 4) is 0.1000 mm;
the surface 10 is the object plane of the fifth lens 5, the surface is a spherical surface, the curvature radius is 17.9317, the central vertex of the surface is 2.7968mm away from the central vertex of the next surface (the image plane of the fifth lens 5 or the object plane of the sixth lens 6), namely the central thickness 2.7968mm of the fifth lens 5, the refractive index is 1846666, and the Abbe coefficient is 23.787324;
the surface 11 is the image plane of the fifth lens 5, since the distance between the image plane and the object plane of the sixth lens 6 is 0 and the curvature radius of the surface is the same, the surface 11 is the image plane of the fifth lens 5 and the object plane of the sixth lens 6, the surface is a spherical surface, the curvature radius is 5.426mm, the distance from the next surface (the image plane of the lens 6) is 2.6847mm, the central thickness of the sixth lens 6 is 2.6847mm, the refractive index is 1.846666, and the abbe series is 23.787324;
the surface 12 is the image surface of the sixth lens 6, the surface is a spherical surface, the curvature radius is 22.9184, and the distance from the central vertex of the next surface (the chip protection glass object surface) is 3.4158 mm;
the surface 13 is a chip protection glass object surface, the surface is a plane, the curvature radius is infinite, the distance from the next surface (chip protection glass image surface) is 0.5000mm, namely the chip protection glass is 0.5000mm thick, the refractive index is 1.516797, and the Abbe coefficient is 64.2124;
the surface 14 is a chip protection glass image surface which is a plane with infinite curvature radius and 1.9992mm from the next surface (image surface);
the surface 15 is a lens imaging surface.
In the above table, the lens 1 is the first lens 1, the lens 2 is the second lens 2, the lens 3 is the third lens 3, the lens 4 is the fourth lens 4, the lens 5 is the fifth lens 5, and the lens surface 6 is the sixth lens surface 6.
The utility model discloses a mechanical mechanism is drawn as shown in fig. 2, the utility model discloses has following characteristic:
(1) the lens cone is made of aluminum AL6061, so that the weight is reduced, and the strength of the lens is improved.
(2) High environmental suitability: the waterproof and dustproof grade can reach IP54 through the reliability test of vehicle-mounted application;
(3) and BBAR films are plated on the surfaces of the lens parts to reduce reflected light, so that stray light generated in the lens is absorbed and dispersed to a great extent, and the energy of the stray light on the image surface is greatly reduced.
(4) The distortion of the lens is small, and the most real photo can be effectively shot.
(5) The large aperture can increase the light flux and reduce the depth of field, so that the picture is brighter and is beneficial to night scene shooting.
(6) The temperature resistance is-40 to +105 ℃ working temperature.
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 (4)
1. A high-pixel large-aperture automatic driving assistance system near-distance forward-looking camera lens; the method is characterized in that: the close-up forward-looking camera lens of the high-pixel large-aperture automatic driving assistance system comprises:
the lens comprises a first lens, a second lens, a third lens, a diaphragm hole, a fourth lens, a fifth lens, a sixth lens, protective glass, a cap and a lens cone;
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 diaphragm hole, a fourth lens, a fifth lens, a sixth lens and protective glass; the second lens, the third lens, the diaphragm hole, the fourth lens, the fifth lens and the sixth lens are all arranged in the lens cone;
the protective glass is fixed on the camera lens close to the sixth lens; the cap is arranged at one end of the lens cone and clamps the first lens and the lens cone;
and a mylar film and a space ring, or a mylar film or a space ring are arranged between adjacent lenses of the first lens, the second lens, the third lens, the diaphragm hole, the fourth lens and the fifth lens.
2. The high pixel large aperture autopilot assistance system close-up forward-looking camera lens of claim 1 further characterized by: the close-up forward-looking camera lens of the high-pixel large-aperture automatic driving assistance system further comprises: the first mylar film, the second mylar film, the first space ring, the second space ring, the third space ring, the fourth space ring and the pressing ring;
the first mylar film is positioned on a surface of the second lens between the second lens and the third lens; the second space ring is positioned between the second lens and the third lens and between the first mylar film and the third lens;
a gap is reserved between the first lens and the second lens; the first space ring is positioned in a gap between the first lens and the second lens;
the second mylar film is positioned between the third lens and the fourth lens; the third space ring is positioned between the third lens and the fourth lens and between the second mylar film and the fourth lens;
the fourth spacer is positioned between the fourth lens and the fifth lens,
the pressing ring presses the sixth lens on the lens cone.
3. The high pixel large aperture autopilot assistance system close-up forward-looking camera lens of claim 1 further characterized by: the lens barrel is made of aluminum AL 6061.
4. The high pixel large aperture autopilot assistance system close-up forward-looking camera lens of claim 1 further characterized by: BBAR films for reducing reflected light are plated on the surfaces of the first lens, the second lens, the third lens, the diaphragm hole, the fourth lens, the fifth lens and the sixth lens.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020787933.0U CN212255856U (en) | 2020-05-13 | 2020-05-13 | Short-distance forward-looking camera lens of high-pixel large-aperture automatic driving assistance system |
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| CN202020787933.0U CN212255856U (en) | 2020-05-13 | 2020-05-13 | Short-distance forward-looking camera lens of high-pixel large-aperture automatic driving assistance system |
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| CN212255856U true CN212255856U (en) | 2020-12-29 |
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