CN218446178U - Eight million-pixel-level forward-looking close-range detection camera lens - Google Patents
Eight million-pixel-level forward-looking close-range detection camera lens Download PDFInfo
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- CN218446178U CN218446178U CN202222751294.4U CN202222751294U CN218446178U CN 218446178 U CN218446178 U CN 218446178U CN 202222751294 U CN202222751294 U CN 202222751294U CN 218446178 U CN218446178 U CN 218446178U
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Abstract
The utility model relates to a look ahead short distance detection camera lens of eight megapixel grades is from the object space of camera lens to image planes and is in proper order: the first, second, third, fourth, fifth, sixth, seventh and eighth lenses; the lenses are all arranged in the lens cone; BBAR films are plated on the image surfaces and the object surfaces of all the lenses; the eighth lens is a light filter; a space ring is arranged between part of the lenses and the adjacent lens; the upper end and the lower end of part of the lenses are provided with step parts matched with the space ring, and the upper end and the lower end of part of the lenses are provided with steps for fixing the space ring; the utility model discloses all do the coating of preventing light reflection to every optical lens piece and handle, plate BBAR membrane in order to reduce the reverberation on optical mirror surface, and carry out surface oxidation and blacking to the metalwork, can effectively avoid the production of ghost, improve the imaging quality of camera lens in the highlight environment. In the optical design process, the number of lenses is increased, the arrangement is adjusted, the shape and the material are optimized, and the stability of the lens is ensured by using the all-glass lens.
Description
Technical Field
The utility model relates to a foresight near field detection camera lens, concretely relates to light in weight, imaging quality is high, the structure is simple relatively, the stray light energy of image plane is few, the coverage of shooting is wide, can effectively take out the foresight near field detection camera lens of eight million pixel levels of truest photo.
Background
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.
The reason that the market concentration of global ADAS (advanced driving assistance system) is high is that it involves three layers of "perception", "decision" and "execution", and needs deep system integration capability, which is also a strong item of continental automobiles as automobile part suppliers, and highly automatic driving also depends on the three-layer architecture. It can be said that market competition of key components such as cameras and radars provides automatic driving opportunities for component enterprises in the first place. On the perception layer, the technology of the continental automobile already comprises sensors such as a camera, a millimeter wave radar and a laser radar, and the technology has abundant near, medium and long distance perception product combinations.
The defects of the traditional technology are as follows: 1. the lens manufactured by the traditional technology has obvious stray light when being irradiated by lamplight in the night environment; 2. the lens manufactured by the traditional technology has small aperture, dark interface, low definition, high distortion, poor image quality in dark light environment and is not beneficial to night scene shooting; 3. the lens manufactured by the traditional technology has low light transmittance, poor heat resistance, poor wear resistance, large thermal expansion coefficient and poor imaging effect, and the lens can deform and be damaged in severe environment, so that the lens cannot bear high-temperature and high-humidity environment and the imaging quality is influenced; 4. the lens manufactured by the traditional technology has low resolution, low pixel, low stability and imaging blur.
The reasons for the above disadvantages are: 1. stray light is generated due to reflection light of each refraction surface such as an optical element and a structural element, reflection light of an inner wall of an instrument, diffuse reflection of a lens, reflection of a lens barrel, or the like; 2. the lens is made into a large aperture and is limited by a plurality of factors, the larger the hole is, the more complex the lens is required for clear imaging, each lens structure has a limit aperture, and the larger the aperture is, the more complex the structure is; 3. the lens is mostly made of plastic and other materials, cannot bear high-temperature and high-humidity environments, has large thermal expansion coefficient, poor heat resistance, poor wear resistance and low processing precision, has higher transmissivity and lower reflectivity of the plastic lens, can deform and damage the lens in severe environments, and has poor imaging effect; 4. the more data transmitted by the vehicle-mounted camera, the greater the difficulty of the processor, the lower the pixels of the lens manufactured by the traditional technology, and the inability of the algorithm for processing the image can not be achieved.
SUMMERY OF THE UTILITY MODEL
To the above problem, the main objective of the present invention is to provide a forward-view close-range detection camera lens with light weight, high imaging quality, relatively simple structure, less stray light energy on image plane, wide coverage of shooting, and effective shooting of the most real photos at eight mega pixel level.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: an eight megapixel class forward-looking close-up detection camera lens, comprising: the lens comprises a first lens, a second lens, a smooth hole plate, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens; mirror cap, lens-barrel.
The sequence from the object space to the image plane of the camera lens is as follows: the lens comprises a first lens, a second lens, a smooth perforated plate, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens.
BBAR films are plated on the image surfaces and the object surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens; the eighth lens is a filter.
A mirror cap barb part is arranged on the mirror cap of the part of the first lens matched with the mirror cap; step parts matched with the barb parts of the lens caps are arranged at the upper end and the lower end of the first lens object surface.
The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are all fixedly arranged in the lens barrel.
A first space ring is arranged between the first lens and the lens cone.
A second space ring is arranged between the first lens and the second lens.
A raised retainer ring is arranged between the second lens and the third lens.
And a third space ring is arranged between the retainer ring 24 and the image surface of the second lens.
A fourth spacer is provided between the collar 24 and the object plane of the third lens.
The image surface of the fourth lens is clung to the upper end and the lower end of the object surface of the fifth lens.
Five space rings are arranged between the fifth lens and the sixth lens; the upper end and the lower end of the image surface of the fifth lens and the object surface of the sixth lens are both provided with steps for fixing the fifth space ring.
A sixth space ring is arranged between the sixth lens and the seventh lens; the upper end and the lower end of the image plane of the sixth lens and the object plane of the seventh lens are both provided with steps for fixing the sixth space ring.
A seventh space ring is arranged between the seventh lens and the eighth lens; the steps for fixing the seventh space ring are arranged at the upper end and the lower end of the image surface of the seventh lens.
A first fixed sealing ring is arranged between the lens cap and the lens cone; a second fixed sealing ring is arranged between the seventh space ring and the lens cone.
In a specific embodiment of the present invention, the object plane of the first lens is a spherical surface, the curvature radius is 110.000mm, and the center thickness of the first lens is 1.000mm; the image plane of the first lens is a spherical surface, the curvature radius is 7.153mm, and the distance from the image plane of the first lens to the central vertex of the object plane of the second lens is 3.389mm.
In a specific embodiment of the present invention, the object plane of the second lens is a spherical surface, the curvature radius is 13.484mm, and the center thickness of the second lens is 1.906mm; the image plane of the second lens is a spherical surface, the curvature radius is-121.930 mm, the distance between the image plane of the second lens and the diaphragm hole surface 9 is 3.675mm, and the distance between the diaphragm hole surface 9 and the central vertex of the object plane of the third lens is 1.044mm.
In a specific embodiment of the present invention, the object plane of the third lens is a spherical surface, the curvature radius is 24.648mm, and the center thickness of the third lens is 2.463mm; the image plane of the third lens is a spherical surface, the curvature radius is-7.580 mm, and the distance from the image plane of the third lens to the central vertex of the object plane of the fourth lens is 0.
In a specific embodiment of the present invention, the object plane of the fourth lens is a spherical surface, the curvature radius is-7.580 mm, and the center thickness of the fourth lens is 0.400mm; the image plane of the fourth lens is a spherical surface, the curvature radius is 0.400mm, and the distance from the image plane of the fourth lens to the center vertex of the object plane of the fifth lens is 1.044mm.
In a specific embodiment of the present invention, the object plane of the fifth lens is a spherical surface, the curvature radius is-18.915 mm, and the center thickness of the fifth lens is 1.821mm; the image plane of the fifth lens is a spherical surface, the curvature radius is-9.481 mm, and the distance from the image plane of the fifth lens to the central vertex of the object plane of the sixth lens is 0.100mm.
In an embodiment of the present invention, the object plane of the sixth lens is a spherical surface, the curvature radius is 17.634mm, and the center thickness of the sixth lens is 2.425mm; the image plane of the sixth lens is a spherical surface, and the curvature radius is-29.470 mm; the distance from the image plane of the sixth lens to the center vertex of the seventh lens is 0.100mm.
In a specific embodiment of the present invention, the object plane of the seventh lens is a spherical surface, the curvature radius is 14.261mm, and the center thickness of the seventh lens is 7.638mm; the image plane of the seventh lens is a spherical surface, and the curvature radius is 9.362mm; the distance from the image surface of the seventh lens to the center vertex of the eighth lens is 1.000mm.
In a specific embodiment of the present invention, the object plane and the image plane of the eighth lens are both flat planes, the thickness of the eighth lens is 0.9000mm, and the distance from the image plane of the eighth lens to the center vertex of the imaging plane is 2.101mm.
In a specific embodiment of the present invention, the retainer ring is integrally formed with the lens barrel.
The utility model discloses an actively advance the effect and lie in: the utility model provides a look ahead short-range detection camera lens of eight megapixel grades has following advantage: the utility model discloses a lens cone uses this lens cone to use aluminum product AL6061, has both alleviateed weight, has improved the intensity of camera lens again, and the surface oxidizes and blackens, can effectively absorb stray light's reflection.
The utility model discloses a lens uses full glass lens, and optical property is stable, absorbs and has disperseed the inside stray light that produces of camera lens at to a great extent, makes the stray light energy of image plane reduce by a wide margin.
The utility model discloses the distortion of camera lens is little, can effectively take out truest photo.
The utility model discloses use big light ring, the light ring can increase the luminous flux greatly, reduces depth of field, makes the picture brighter, and bigger relative luminance does benefit to the night scene and shoots.
The utility model discloses have the high resolution, this camera lens can reach the resolution ratio more than 9M the highest, and the photo picture quality of shooing is clear.
The utility model discloses have big visual field, the coverage of shooting is wide.
The utility model discloses all do the coating of preventing light reflection to every optical lens piece and handle, plate BBAR membrane in order to reduce the reverberation on the optical mirror surface, and carry out surface oxidation and blackening to the metalwork, can effectively avoid the production of ghost, improve the imaging quality of camera lens in the highlight environment.
The utility model discloses in the optical design process, comprehensive consideration increases lens quantity, adjustment and arranges, optimizes shape and material, uses full glass camera lens, has guaranteed the stability of camera lens.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the imaging optical path 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 fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, an imaging surface 9, a lens cap 10, a first space ring 11, a second space ring 12, a third space ring 13, a fourth space ring 14, a fifth space ring 15, a sixth space ring 16, a seventh space ring 17, a lens barrel 18, a first fixed seal ring 19, a second fixed seal ring 20, a lens cap barb part 21, a step part 22, a smooth hole plate surface 23 and a retainer ring 24.
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 utility model discloses an overall structure schematic diagram, fig. 2 are the utility model discloses an image light path schematic diagram, as shown in fig. 1 and 2, the utility model provides a forward-looking short-range detection camera lens of eight megapixels grades, this forward-looking short-range detection camera lens of eight megapixels grades includes: the lens comprises a first lens 1, a second lens 2, a smooth hole plate surface 23, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7 and an eighth lens 8; a lens cap 10 and a lens barrel 18.
The sequence from the object space to the image plane of the camera lens is as follows: the lens comprises a first lens 1, a second lens 2, a smooth hole plate surface 23, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7 and an eighth lens 8.
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, the sixth lens 6, the seventh lens 7 and the eighth lens 8; the eighth lens element 8 is a filter.
A mirror cap barb part 21 is arranged on the mirror cap 10 of the part of the first lens 1 matched with the mirror cap 10; step portions 22 matched with the barb portions 21 of the lens cap are arranged at the upper end and the lower end of the first lens object surface.
The first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the seventh lens 7 and the eighth lens 8 are all fixedly installed in the lens barrel 18.
A first space ring 11 is arranged between the first lens 1 and the lens barrel 18; a second space ring 12 is arranged between the first lens 1 and the second lens 2; a raised retainer ring 24 is arranged between the second lens 2 and the third lens 3, and a third spacer ring 13 is arranged between the retainer ring 24 and the image plane of the second lens 2; a fourth space ring 14 is arranged between the retainer ring 24 and the object surface of the third lens 3; the image surface of the fourth lens 4 is tightly attached to the upper end and the lower end of the object surface of the fifth lens 5; a fifth space ring 15 is arranged between the fifth lens 5 and the sixth lens 6; the utility model discloses an in the concrete implementation, can also do as follows for better fixed settlement: the upper end and the lower end of the image surface of the fifth lens 5 and the object surface of the sixth lens 6 are both provided with steps for fixing the fifth space ring 15.
A sixth space ring 16 is arranged between the sixth lens and the seventh lens; the utility model discloses an in the concrete implementation, can also do as follows the settlement for better fixed: the upper end and the lower end of the image plane of the sixth lens and the object plane of the seventh lens are both provided with steps for fixing the sixth space ring 16.
A seventh space ring 17 is arranged between the seventh lens and the eighth lens; the utility model discloses an in the concrete implementation, can also do as follows for better fixed settlement: the upper end and the lower end of the image surface of the seventh lens are provided with steps for fixing the seventh space ring 17.
A first fixed sealing ring 19 is arranged between the lens cap 10 and the lens barrel 18; a second stationary seal ring 20 is disposed between the seventh space ring and the lens barrel 18.
The following is a specific example of implementation:
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, at infinity from the center vertex of the next surface (object plane of lens 1).
In the following description and tables, lens 1 is the first lens, lens 2 is the second lens, lens 3 is the third lens, lens 4 is the fourth lens, lens 5 is the fifth lens, lens 6 is the sixth lens, lens 7 is the seventh lens, and lens 8 is the eighth lens.
The surface 1 is the object plane of the lens 1, the surface is a spherical surface, the curvature radius is 110.000mm, the distance from the center vertex of the next surface (the image plane of the lens 1) is 1.000mm, namely the center thickness of the lens 1 is 1.000mm, the refractive index is 1.620047, and the Abbe coefficient is 36.3479.
The surface 2 is the image surface of the lens 1, the surface is a spherical surface, the curvature radius is 7.153mm, and the distance from the next surface (the object surface of the lens 2) is 3.389mm.
The surface 3 is the object surface of the lens 2, the surface is a spherical surface, the curvature radius is 13.484mm, the distance from the center vertex of the next surface (the image surface of the lens 2) is 1.906mm, namely the center thickness of the lens 2 is 1.906mm, the refractive index is 2.000689, and the Abbe coefficient is 25.4351.
The surface 4 is the image surface of the lens 2, the surface is a spherical surface, the curvature radius is no minus 121.930mm, and the distance from the next surface (the diaphragm aperture surface) is 3.675mm.
The surface 5 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 (lens 3 object surface) is 1.044mm.
The surface 6 is the object plane of the lens 3, the surface is a spherical surface, the curvature radius is 24.648mm, the central vertex of the surface is 2.463mm away from the central vertex of the next surface (the image plane of the lens 3), namely the central thickness of the lens 3 is 2.463mm, the refractive index is 1.592824, and the Abbe coefficient is 68.6244.
The surface 7 is the image surface of the lens 3, the distance between the surface and the object plane of the lens 4 is 0, and the curvature radius of the surface is the same, so that the surface 7 is the image surface of the lens 3 and the object plane of the lens 4, the surface is a spherical surface, the curvature radius is-7.580 mm, the distance from the next surface (the image surface of the lens 4) is 0.400mm, namely the center thickness of the lens 4 is 0.400mm, the refractive index is 1.846666, and the Abbe number is 23.7873.
The surface 8 is the image surface of the lens 4, which is a spherical surface with a radius of curvature of 19.298mm and a distance of 1.044mm from the central vertex of the next surface (the object surface of the lens 5).
The surface 10 is the image surface of the lens 5; the surface is a spherical surface, the curvature radius is-9.481 mm, and the distance from the central vertex of the next surface (the object surface of the lens 6) is 0.100mm.
The surface 12 is the image surface of the lens 6; the surface is spherical with a radius of curvature of-29.470 mm, and is 0.100mm from the central vertex of the next surface (object plane of lens 7).
The surface 13 is the object plane of the lens 7, the surface is a spherical surface, the curvature radius is 14.261mm, the distance from the next surface (the image plane of the lens 7) is 7.638mm, namely the central thickness of the lens 7 is 7.638mm, the refractive index is 1.834810, and the Abbe coefficient is 42.7275.
The surface 14 is an image surface of the lens 7, the surface is a spherical surface, the curvature radius is 9.362mm, and the thickness from the center of the next surface (an optical filter object surface) is 1.000mm;
the surface 15 is an object surface of the optical filter, the surface is a plane, the curvature radius is infinite, the distance from the next surface (image surface of the optical filter) is 0.9000mm, namely the thickness of the optical filter is 0.9000mm, the refractive index is 1.516797, and the Abbe coefficient is 64.2124.
The surface 16 is the image surface of the optical filter, which is a plane with infinite curvature radius and 2.101mm from the next surface (the imaging surface of the lens)
The surface 17 is a lens imaging surface.
The utility model discloses an aluminum product AL6061 is used to this lens cone of lens cone, has both alleviateed weight, has improved the intensity of camera lens again, and the surface oxidizes and blackens, can effectively absorb stray light's reflection.
The utility model discloses have high environmental suitability, can pass through the reliability test of on-vehicle usage, the protection level reaches IP69.
The utility model discloses a BBAR membrane is plated on partial surface of lens 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 of image planes 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 have big light ring, the light ring can increase the luminous flux greatly, reduces depth of field, makes the picture brighter, and bigger relative luminance does benefit to the night scene and shoots.
The utility model discloses have temperature toleration.
The utility model discloses all do the coating of preventing light reflection to every optical lens piece and handle, plate BBAR membrane in order to reduce the reverberation on optical mirror surface, and carry out surface oxidation and blacking to the metalwork, can effectively avoid the production of ghost, improve the imaging quality of camera lens in the highlight environment.
The utility model discloses in the optical design process, comprehensive consideration increases lens quantity, adjustment and arranges, optimizes shape and material, uses the full glass camera lens, has guaranteed the stability of camera lens.
The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. 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 (10)
1. A lens of a forward-looking close-up detection camera with the grade of eight million pixels is characterized in that: the eight million pixels level forward-looking close-up detection camera lens comprises: the lens comprises a first lens, a second lens, a smooth hole plate, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens; a lens cap, a lens barrel;
the object space to the image plane of the camera lens are as follows: the lens comprises a first lens, a second lens, a smooth hole plate, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens;
BBAR films are plated on the image surfaces and the object surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens; the eighth lens is a light filter;
a mirror cap barb part is arranged on the mirror cap of the part of the first lens matched with the mirror cap; the upper end and the lower end of the first lens object surface are provided with step parts matched with the barb parts of the lens cap,
the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are all fixedly arranged in the lens barrel;
a first space ring is arranged between the first lens and the lens cone;
a second space ring is arranged between the first lens and the second lens;
a raised retainer ring is arranged between the second lens and the third lens,
a third space ring is arranged between the retainer ring and the image surface of the second lens;
a fourth space ring is arranged between the retainer ring and the object surface of the third lens;
the image surface of the fourth lens is clung to the upper end and the lower end of the object surface of the fifth lens;
five space rings are arranged between the fifth lens and the sixth lens; the upper end and the lower end of the image surface of the fifth lens and the object surface of the sixth lens are respectively provided with a step for fixing a fifth space ring;
a sixth space ring is arranged between the sixth lens and the seventh lens; the upper end and the lower end of the image surface of the sixth lens and the object surface of the seventh lens are both provided with steps for fixing a sixth space ring;
a seventh space ring is arranged between the seventh lens and the eighth lens; the upper end and the lower end of the image surface of the seventh lens are provided with steps for fixing a seventh space ring;
a first fixed sealing ring is arranged between the lens cap and the lens cone; a second fixed sealing ring is arranged between the seventh space ring and the lens cone.
2. The lens for a front-view close-up detection camera at the level of eight megapixels according to claim 1, wherein: the object surface of the first lens is a spherical surface, the curvature radius is 110.000mm, and the center thickness of the first lens is 1.000mm; the image plane of the first lens is a spherical surface, the curvature radius is 7.153mm, and the distance from the image plane of the first lens to the central vertex of the object plane of the second lens is 3.389mm.
3. The lens of an eight megapixel class of close-looking detection camera according to claim 1, wherein: the object plane of the second lens is a spherical surface, the curvature radius is 13.484mm, and the center thickness of the second lens is 1.906mm; the image plane of the second lens is a spherical surface, the curvature radius is-121.930 mm, the distance between the image plane of the second lens and the diaphragm hole surface is 3.675mm, and the distance between the diaphragm hole surface and the central vertex of the object plane of the third lens is 1.044mm.
4. The lens for a front-view close-up detection camera at the level of eight megapixels according to claim 1, wherein: the object plane of the third lens is a spherical surface, the curvature radius is 24.648mm, and the center thickness of the third lens is 2.463mm; the image plane of the third lens is a spherical surface, the curvature radius is-7.580 mm, and the distance from the image plane of the third lens to the central vertex of the object plane of the fourth lens is 0.
5. The lens for a front-view close-up detection camera at the level of eight megapixels according to claim 1, wherein: the object plane of the fourth lens is a spherical surface, the curvature radius is-7.580 mm, and the center thickness of the fourth lens is 0.400mm; the image plane of the fourth lens is a spherical surface, the curvature radius is 0.400mm, and the distance from the image plane of the fourth lens to the center vertex of the object plane of the fifth lens is 1.044mm.
6. The lens of an eight megapixel class of close-looking detection camera according to claim 1, wherein: the object plane of the fifth lens is a spherical surface, the curvature radius is-18.915 mm, and the center thickness of the fifth lens is 1.821mm; the image plane of the fifth lens is a spherical surface, the curvature radius is-9.481 mm, and the distance from the image plane of the fifth lens to the central vertex of the object plane of the sixth lens is 0.100mm.
7. The lens of an eight megapixel class of close-looking detection camera according to claim 1, wherein: the object plane of the sixth lens is a spherical surface, the curvature radius is 17.634mm, and the center thickness of the sixth lens is 2.425mm; the image plane of the sixth lens is a spherical surface, and the curvature radius is-29.470 mm; the distance from the image plane of the sixth lens to the center vertex of the seventh lens is 0.100mm.
8. The lens for a front-view close-up detection camera at the level of eight megapixels according to claim 1, wherein: the object plane of the seventh lens is a spherical surface, the curvature radius is 14.261mm, and the center thickness of the seventh lens is 7.638mm; the image plane of the seventh lens is a spherical surface, and the curvature radius is 9.362mm; the distance from the image plane of the seventh lens to the center vertex of the eighth lens is 1.000mm.
9. The lens of an eight megapixel class of close-looking detection camera according to claim 1, wherein: the object plane and the image plane of the eighth lens are both planes, the thickness of the eighth lens is 0.9000mm, and the distance from the image plane of the eighth lens to the central vertex of the imaging plane is 2.101mm.
10. The lens of an eight megapixel class of close-looking detection camera according to claim 1, wherein: the retainer ring and the lens barrel are integrally formed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222751294.4U CN218446178U (en) | 2022-10-19 | 2022-10-19 | Eight million-pixel-level forward-looking close-range detection camera lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222751294.4U CN218446178U (en) | 2022-10-19 | 2022-10-19 | Eight million-pixel-level forward-looking close-range detection camera lens |
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| CN218446178U true CN218446178U (en) | 2023-02-03 |
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| CN202222751294.4U Active CN218446178U (en) | 2022-10-19 | 2022-10-19 | Eight million-pixel-level forward-looking close-range detection camera lens |
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- 2022-10-19 CN CN202222751294.4U patent/CN218446178U/en active Active
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