CN204650054U - Adapt to high pixel large target surface chip fish eye lens - Google Patents
Adapt to high pixel large target surface chip fish eye lens Download PDFInfo
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- CN204650054U CN204650054U CN201520310934.5U CN201520310934U CN204650054U CN 204650054 U CN204650054 U CN 204650054U CN 201520310934 U CN201520310934 U CN 201520310934U CN 204650054 U CN204650054 U CN 204650054U
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Abstract
The utility model relates to the high pixel of a kind of adaptation large target surface chip fish eye lens, in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, be provided with iris C between described front group of A and rear group of B, before described, group A comprises the negative meniscus lens A-1, negative meniscus lens A-2, biconcave lens A-3 and the biconvex lens A-4 that set gradually from left to right; Described rear group of B comprises gummed group, the biconvex lens B-3 and biconvex lens B-4 of biconvex lens B-1 and the biconcave lens B-2 contiguity set gradually from left to right.The high pixel of this adaptation large target surface chip fish eye lens meets the panoramic imagery of miniature video camera, the demand of high definition, promotes the image quality of miniature video camera system, improves the authenticity of picture, expands the range of application of miniature camera system.
Description
Technical field
The utility model relates to the high pixel of a kind of adaptation large target surface chip fish eye lens, belongs to the optical pick-up apparatus field of video technique.
Background technology
Along with the expansion in optical material storehouse and the enhancing of social security protection consciousness, safety monitoring market obtains swift and violent expansion, and security product performance also presents variation change simultaneously.Micro television CCTV camera occurs existing 20 ~ 30 years till now, through innovation for many years and development, the micro pick-up lens of current formation different series plurality of specifications model supports the use with it, but the performance index of these camera lenses are very different, great majority belong to low grade products, performance index are low, only adapt to the common camera of mega pixel; The amount of distortion of image is comparatively large, and pattern distortion and visions of reality picture difference become large, and authenticity is poor, and edge resolving power is inadequate, and these all can not meet current needs.
Technology of video compressing encoding now along with advanced person is constantly ripe, the develop rapidly of IP-based Internet Transmission and the application of Digital Zoom technology, market has been proposed the high-definition camera of a series of 3,000,000, five mega pixels; Fish eye lens can meet 360 degree of overall view monitoring demands, but its distortion is very large so that edge enlargement ratio is low thus affect edge picture sharpness.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of high pixel of adaptation large target surface chip fish eye lens of low distortion, promotes the image quality of miniature video camera system, improves the authenticity of picture.
The utility model adopts following scheme to realize: the high pixel of a kind of adaptation large target surface chip fish eye lens, in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, be provided with iris C between described front group of A and rear group of B, before described, group A comprises the negative meniscus lens A-1, negative meniscus lens A-2, biconcave lens A-3 and the biconvex lens A-4 that set gradually from left to right; Described rear group of B comprises gummed group, the biconvex lens B-3 and biconvex lens B-4 of biconvex lens B-1 and the biconcave lens B-2 contiguity set gradually from left to right.
Further, the airspace between described front group of A and rear group of B is 3.01mm; Airspace between described iris C and rear group of B is 0.11mm.
Further, airspace before described in group A between negative meniscus lens A-1 and negative meniscus lens A-2 is 2.08mm, airspace between negative meniscus lens A-2 and biconcave lens A-3 is 2.71mm, and the airspace between biconcave lens A-3 and biconvex lens A-4 is 3.61mm; Airspace in described rear group of B between gummed group and biconvex lens B-3 is 0.13mm, and the airspace between biconvex lens B-3 and biconvex lens B-4 is 0.12mm.
Further, described camera lens physical construction comprises body tube, and A is organized before being provided with lens set in body tube inner chamber front portion, organizes B after body tube inner chamber rear portion is provided with lens set.
Further, described body tube front end is provided with the front trim ring compressing outer edge on front side of negative meniscus lens A-1; Spacer ring AB is folded with between described biconcave lens A-3 and biconvex lens A-4, spacer is folded with between gummed group in biconvex lens A-4 in described front group of A and described rear group of B, be folded with spacer ring BC between described biconvex lens B-3 and biconvex lens B-4, described body tube rear end endoporus is provided with the bulge loop heading on outer edge on rear side of biconvex lens B-4.
Compared with prior art, the utility model has following beneficial effect: the high pixel of this adaptation large target surface chip fish eye lens meets the panoramic imagery of miniature video camera, the demand of high definition, promote the image quality of miniature video camera system, improve the authenticity of picture, expand the range of application of miniature camera system, overcome the defect that micro pick-up lens prior art performance index are low.
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by specific embodiment and relevant drawings, the utility model will be described in further detail.
Accompanying drawing explanation
Fig. 1 is the optical system schematic diagram of the utility model embodiment;
Fig. 2 is the physical construction schematic diagram of the utility model embodiment;
Number in the figure illustrates: trim ring, 11-spacer ring AB, 12-spacer, 13-spacer ring BC, 14-bulge loop before 1-negative meniscus lens A-1,2-negative meniscus lens A-2,3-biconcave lens A-3,4-biconvex lens A-4,5-biconvex lens B-1,6-biconcave lens B-2,7-biconvex lens B-3,8-biconvex lens B-4,9-body tube, 10-.
Embodiment
As shown in Figure 1 and 2, the high pixel of a kind of adaptation large target surface chip fish eye lens, in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, be provided with iris C between described front group of A and rear group of B, described before group A comprise the negative meniscus lens A-1(1 set gradually from left to right), negative meniscus lens A-2(2), biconcave lens A-3(3) and biconvex lens A-4(4); Described rear group of B comprises the biconvex lens B-1(5 set gradually from left to right) and biconcave lens B-2(6) the gummed group, the biconvex lens B-3(7 that touch) and biconvex lens B-4(8).
In the present embodiment, the airspace between described front group of A and rear group of B is 3.01mm; Airspace between described iris C and rear group of B is 0.11mm.
In the present embodiment, described before group A in negative meniscus lens A-1(1) and negative meniscus lens A-2(2) between airspace be 2.08mm, negative meniscus lens A-2(2) and biconcave lens A-3(3) between airspace be 2.71mm, biconcave lens A-3(3) and biconvex lens A-4(4) between airspace be 3.61mm; Gummed group and biconvex lens B-3(7 in described rear group of B) between airspace be 0.13mm, biconvex lens B-3(7) and biconvex lens B-4(8) between airspace be 0.12mm.
When optical design, aberration correction and balance are carried out to the wide spectral range of 485 ~ 850nm, make camera lens all have excellent picture element at wide spectral range, achieve wide spectral confocal.Such camera lens can not only blur-free imaging under photoenvironment in the daytime, under night pole low-light (level) environment, by infrared light filling, and also can blur-free imaging; Select the optical glass material of high refraction, low dispersion simultaneously, by computer optics Computer Aided Design and correct optical lens various aberrations with optimizing, make the resolution of camera lens high, the requirement of 5,000,000 pixel high definition video shootings can be adapted to; During design, improve the enlargement ratio of peripheral field by control f-θ distortion, thus improve its resolving power, make it meet after peripheral field picture evens up expansion, have enough resolution.
In the present embodiment, the optical system be made up of above-mentioned lens set reaches following optical index:
1, focal length: f '=1.47mm;
2, relative aperture F=2.2;
3, field angle: 2w>180 ° (image space is as visual field 2 η ' >=Ф 4mm);
4, f-θ distorts: <-2%;
5, resolution: can be adaptive with 6,000,000 pixel high-resolution video cameras;
6, light path overall length ∑≤31mm, optics rear cut-off distance l ' >=5.10mm;
7, spectral line scope: 480nm ~ 850nm is suitable for.
In the present embodiment, described camera lens physical construction comprises body tube 9, and A is organized before being provided with lens set in body tube 9 inner chamber front portion, organizes B after body tube inner chamber rear portion is provided with lens set, be positioned at body tube 9 peripheral part and be provided with the external thread that diameter is M12, meet the interface requirement that client uses video camera.
In the present embodiment, described body tube 9 front end is provided with and compresses negative meniscus lens A-1(1) the front trim ring 10 of outer edge, front side, limits product inner member degree of freedom, ensures stationarity and the stability of eyeglass assembling; Described biconcave lens A-3(3) and biconvex lens A-4(4) between be folded with spacer ring AB(11), biconvex lens A-4(4 in described front group of A) and described rear group of B in gummed group between be folded with spacer 12, described biconvex lens B-3(7) and biconvex lens B-4(8) between be folded with spacer ring BC(13), described body tube 9 rear end endoporus is provided with and heads on biconvex lens B-4(8) rear side outer edge bulge loop 14.
Spacer ring in body tube and the surface of contact of eyeglass will have accurate verticality to carry out strict size Control to the accuracy ensureing eyeglass and assemble to endoporus internal diameter size, make it coordinate with eyeglass and closely reach the right alignment of eyeglass installation requirement and the consistance of lens light axis, and on body tube, have strict size and status requirement.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; be understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. one kind adapts to high pixel large target surface chip fish eye lens, it is characterized in that: in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, be provided with iris C between described front group of A and rear group of B, before described, group A comprises the negative meniscus lens A-1, negative meniscus lens A-2, biconcave lens A-3 and the biconvex lens A-4 that set gradually from left to right; Described rear group of B comprises gummed group, the biconvex lens B-3 and biconvex lens B-4 of biconvex lens B-1 and the biconcave lens B-2 contiguity set gradually from left to right.
2. the high pixel of adaptation according to claim 1 large target surface chip fish eye lens, is characterized in that: the airspace between described front group of A and rear group of B is 3.01mm; Airspace between described iris C and rear group of B is 0.11mm.
3. the high pixel of adaptation according to claim 1 large target surface chip fish eye lens, it is characterized in that: the airspace before described in group A between negative meniscus lens A-1 and negative meniscus lens A-2 is 2.08mm, airspace between negative meniscus lens A-2 and biconcave lens A-3 is 2.71mm, and the airspace between biconcave lens A-3 and biconvex lens A-4 is 3.61mm; Airspace in described rear group of B between gummed group and biconvex lens B-3 is 0.13mm, and the airspace between biconvex lens B-3 and biconvex lens B-4 is 0.12mm.
4. the high pixel of adaptation according to claim 1 large target surface chip fish eye lens, is characterized in that: described camera lens physical construction comprises body tube, and A is organized before being provided with lens set in body tube inner chamber front portion, organizes B after body tube inner chamber rear portion is provided with lens set.
5. the high pixel of adaptation according to claim 4 large target surface chip fish eye lens, is characterized in that: described body tube front end is provided with the front trim ring compressing outer edge on front side of negative meniscus lens A-1; Spacer ring AB is folded with between described biconcave lens A-3 and biconvex lens A-4, spacer is folded with between gummed group in biconvex lens A-4 in described front group of A and described rear group of B, be folded with spacer ring BC between described biconvex lens B-3 and biconvex lens B-4, described body tube rear end endoporus is provided with the bulge loop heading on outer edge on rear side of biconvex lens B-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310934.5U CN204650054U (en) | 2015-05-15 | 2015-05-15 | Adapt to high pixel large target surface chip fish eye lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520310934.5U CN204650054U (en) | 2015-05-15 | 2015-05-15 | Adapt to high pixel large target surface chip fish eye lens |
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| CN204650054U true CN204650054U (en) | 2015-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808314A (en) * | 2015-05-15 | 2015-07-29 | 福建福光数码科技有限公司 | Fisheye lens adapted to high-pixel large-target-surface chip |
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2015
- 2015-05-15 CN CN201520310934.5U patent/CN204650054U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808314A (en) * | 2015-05-15 | 2015-07-29 | 福建福光数码科技有限公司 | Fisheye lens adapted to high-pixel large-target-surface chip |
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