CN103399391B - Ten million pixel large target surface day and night micro pick-up lens - Google Patents
Ten million pixel large target surface day and night micro pick-up lens Download PDFInfo
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- CN103399391B CN103399391B CN201310375728.8A CN201310375728A CN103399391B CN 103399391 B CN103399391 B CN 103399391B CN 201310375728 A CN201310375728 A CN 201310375728A CN 103399391 B CN103399391 B CN 103399391B
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Abstract
The present invention relates to a kind of ten million pixel large target surface day and night micro pick-up lens, in the optical system of described camera lens along light from left to right incident direction be respectively equipped with before group A, diaphragm C and after organize B, before described, group A is provided with negative crescent moon lens A-1, biconcave lens A-2, plano-convex lens A-3 and positive crescent moon lens A-4, described rear group of B successively and is provided with the gummed group, the biconvex lens B-3 and biconvex lens B-4 that are touched by biconcave lens B-1 and biconvex lens B-2 successively.The retrofocus type structure that this camera lens adopts positive negative power to be separated, the focal distance f of front group of A
a=-10.82mm, the focal distance f of rear group of B
b=5.91mm, after two constituent elements combinations, makes the rear leading role reach of camera lens, the rear cut-off distance l≤1.6f of camera lens, has the advantage such as low distortion, high resolving power, waterproof and dustproof, scratch resistant, day and night, large target surface.
Description
Technical field
The present invention relates to a kind of ten million pixel large target surface day and night micro pick-up lens.
Background technology
Appearance and the application of micro television CCTV camera have the history of 20 ~ 30 years, have the micro pick-up lens of varied specifications and models supporting with it.Their performance index are very different, and great majority belong to low grade products, and performance index are low, and only adapt to the little image planes size common camera of 20 ~ 300,000 pixels, the spectral range of adaptation is narrow, can only use in the daytime of 480nm ~ 700nm under light condition; Pattern distortion amount is large, and pattern distortion and visions of reality picture difference become large, and authenticity is poor.
Summary of the invention
In order to the fast development of the requirement and on-vehicle lens that adapt to the high definition of miniature video camera, promote the image quality of miniature video camera system, expand the range of application of miniature camera system, and on-vehicle lens is to the adaptive faculty of rugged surroundings, namely the technical problem to be solved in the present invention is for miniature video camera system provides a kind of ten million pixel large target surface day and night micro pick-up lens.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of ten million pixel large target surface day and night micro pick-up lens, in the optical system of described camera lens along light from left to right incident direction be respectively equipped with before group A, diaphragm C and after organize B, before described, group A is provided with negative crescent moon lens A-1, biconcave lens A-2, plano-convex lens A-3 and positive crescent moon lens A-4, described rear group of B successively and is provided with the gummed group, the biconvex lens B-3 and biconvex lens B-4 that are touched by biconcave lens B-1 and biconvex lens B-2 successively.
In further technical scheme, the airspace between described front group of A and rear group of B is 1.47mm.
In further technical scheme, airspace between negative crescent moon lens A-1 before described in group A and biconcave lens A-2 is 2.04mm, airspace between described biconcave lens A-2 and plano-convex lens A-3 is 0.81mm, and the airspace between described plano-convex lens A-3 and positive crescent moon lens A-4 is 0.18mm.
In further technical scheme, the gummed group in described rear group of B and the airspace between biconvex lens B-3 are 0.1mm, and the airspace between described biconvex lens B-3 and biconvex lens B-4 is 0.1mm.
In further technical scheme, the focal distance f of group A before described
a=-10.82mm, the focal distance f of described rear group of B
b=5.91mm.
Compared with prior art, the present invention has following beneficial effect: the retrofocus type structure that (1) adopts positive negative power to be separated, the focal distance f of front group of A
a=-10.82mm, the focal distance f of rear group of B
b=5.91mm, after two constituent element combinations, makes rear leading role's reach of camera lens, the rear cut-off distance l≤1.6f of camera lens.(2) before this camera lens, the glass of high index of refraction all selected by four eyeglasses of group A, assume responsibility for very large focal power, make the oblique ray of wide-angle, after front group of A quick " convergence ", reduce with the slanted angle of optical axis, through after organize B refraction after, the angle of chief ray and optical axis reduces, make camera lens achieve excellent aberration correction, and make the uniform-illumination of image planes.(3) after the diaphragm C of camera lens, biconcave lens B-1 is placed, effectively utilize the aberration that it carrys out corrective lens, make the resolution of camera lens up to 1,000 ten thousand pixels, there is the advantages such as low distortion, high resolving power, waterproof and dustproof, scratch resistant, day and night, large target surface.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Accompanying drawing explanation
Fig. 1 is the optical system schematic diagram of the embodiment of the present invention.
Fig. 2 is the physical construction schematic diagram of the embodiment of the present invention.
In figure: 1-bears crescent moon lens A-1,2-biconcave lens A-2,3-plano-convex lens A-3,4-positive crescent moon lens A-4,5-biconcave lens B-1,6-biconvex lens B-2,7-biconvex lens B-3,8-biconvex lens B-4, trim ring before 9-, 10-O-ring seal, 11-CD spacer ring, 12-DE spacer ring, 13-FG spacer ring, 14-GH spacer ring, 15-body tube; Group before A-, A-1-bears crescent moon lens, A-2-biconcave lens, A-3-plano-convex lens, the positive crescent moon lens of A-4-, group after B-, B-1-biconcave lens, B-2-biconvex lens, B-3-biconvex lens, B-4-biconvex lens, C-diaphragm, D-image planes.
Embodiment
As shown in Figure 1, a kind of ten million pixel large target surface day and night micro pick-up lens, described camera lens light path is anti-distance optical structure, in the optical system of described camera lens along light from left to right incident direction be respectively equipped with before group A, diaphragm C and after organize B, before described, group A is provided with negative crescent moon lens A-1, biconcave lens A-2, plano-convex lens A-3 and positive crescent moon lens A-4 successively, the focal distance f of group A before described
a=-10.82mm; Described rear group of B is provided with the gummed group, the biconvex lens B-3 and biconvex lens B-4 that are touched by biconcave lens B-1 and biconvex lens B-2 successively, the focal distance f of described rear group of B
b=5.91mm.
In the present embodiment, the airspace between described front group of A and rear group of B is 1.47mm; Airspace between negative crescent moon lens A-1 before described in group A and biconcave lens A-2 is 2.04mm, airspace between described biconcave lens A-2 and plano-convex lens A-3 is 0.81mm, and the airspace between described plano-convex lens A-3 and positive crescent moon lens A-4 is 0.18mm; Gummed group in described rear group of B and the airspace between biconvex lens B-3 are 0.1mm, and the airspace between described biconvex lens B-3 and biconvex lens B-4 is 0.1mm.
When optical design, aberration correction and balance are carried out to the wide spectral range of 480nm ~ 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.Before this camera lens, the optical glass material (such as H-FK61 material) of high refraction, low dispersion all selected by four eyeglasses of group A, various aberration and the distortion of optical lens is corrected by computer optics Computer Aided Design and optimization, camera lens is made to realize high resolving power, low distortion, more meet the requirement of low distortion high definition video shooting, be applicable to the shooting of panorama machine.In addition, negative crescent moon lens A-1 convex surface is coated with Buddha's warrior attendant film, has good scratch resistant effect.
In the present embodiment, the optical system be made up of above-mentioned lens set reaches following optical index: (1) focal length: f '=5.2m; (2) relative aperture F=1.5; (3) field angle: 2w >=90 ° (image space 2 η ' >=Ф 8mm); (4) distort: <-3%; (5) resolution: can be adaptive with 1,000 ten thousand pixel high-resolution video cameras; (6) light path overall length ∑≤33mm, optics rear cut-off distance l ' >=8.5mm; (7) spectral range: 480nm ~ 850nm is suitable for.
As shown in Figure 2, physical construction of the present invention comprises body tube 15, negative crescent moon lens A-1, biconcave lens A-2, plano-convex lens A-3, positive crescent moon lens A-4, biconcave lens B-1, biconvex lens B-2, biconvex lens B-3 and biconvex lens B-4 are installed in described body tube 15, described body tube 15 left end is provided with the front trim ring 9 pushing down negative crescent moon lens A-1, ensures the being mounted with property of whole eyeglass, stability; On the right side of described negative crescent moon lens A-1 and be provided with O-ring seal 10 between body tube 15, described O-ring seal 10 is compressed by front trim ring 9, ensures waterproof and the dust reduction capability of body tube 15.CD spacer ring 11 is provided with between described plano-convex lens A-3 and positive crescent moon lens A-4, DE spacer ring 12 is provided with between described positive crescent moon lens A-4 and biconcave lens B-1, be provided with FG spacer ring 13 between described biconvex lens B-2 and biconvex lens B-3, between described biconvex lens B-3 and biconvex lens B-4, be provided with GH spacer ring 14.
In the present embodiment, described body tube 15 is clamped one time machine-shaping, the positional precision of body tube 15 can be ensured well, and want man-hour the spacer ring of strict guarantee eyeglass airspace and the plane of lens contacts will have accurate verticality to ensure the accuracy that eyeglass assembles adding, strict size Control is carried out to body tube 15 bore inner 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 by ensureing the air distance between each eyeglass to the accurate processing of spacer ring.
When Design of Mechanical Structure, both ensured the accurate of the concentricity of camera lens, precision and axial location, and made again Design of Mechanical Structure compact small and exquisite (overall dimensions Ф 20mm × 24.4mm), the occasion that structure is compacter can be applicable to, such as small-sized ball machine etc., its applicable surface is wider.Wherein all constitutional details adopt NC super machining technique, meet the strict demand of optical design to air distance, make the compact conformation of camera lens, volume little, lightweight, ensure the accuracy of its precision.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. a pixel large target surface day and night micro pick-up lens, it is characterized in that: in the optical system of described camera lens along light from left to right incident direction be respectively equipped with before group A, diaphragm C and after organize B, before described, group A is provided with negative crescent moon lens A-1, biconcave lens A-2, plano-convex lens A-3 and positive crescent moon lens A-4, described rear group of B successively and is provided with the gummed group, the biconvex lens B-3 and biconvex lens B-4 that are touched by biconcave lens B-1 and biconvex lens B-2 successively; Airspace between described front group of A and rear group of B is 1.47mm; Airspace between negative crescent moon lens A-1 before described in group A and biconcave lens A-2 is 2.04mm, airspace between described biconcave lens A-2 and plano-convex lens A-3 is 0.81mm, and the airspace between described plano-convex lens A-3 and positive crescent moon lens A-4 is 0.18mm; Gummed group in described rear group of B and the airspace between biconvex lens B-3 are 0.1mm, and the airspace between described biconvex lens B-3 and biconvex lens B-4 is 0.1mm; The focal distance f of group A before described
a=-10.82mm, the focal distance f of described rear group of B
b=5.91mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375728.8A CN103399391B (en) | 2013-08-27 | 2013-08-27 | Ten million pixel large target surface day and night micro pick-up lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375728.8A CN103399391B (en) | 2013-08-27 | 2013-08-27 | Ten million pixel large target surface day and night micro pick-up lens |
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| CN103399391A CN103399391A (en) | 2013-11-20 |
| CN103399391B true CN103399391B (en) | 2015-10-28 |
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| CN201310375728.8A Active CN103399391B (en) | 2013-08-27 | 2013-08-27 | Ten million pixel large target surface day and night micro pick-up lens |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199174B (en) * | 2014-09-18 | 2016-06-15 | 福建福光股份有限公司 | Day and night confocal big target surface high definition camera lens |
| CN106772935B (en) * | 2016-12-07 | 2022-09-13 | 浙江大华技术股份有限公司 | Lens system and fixed-focus lens |
| CN106547073B (en) * | 2016-12-07 | 2018-12-25 | 福建福光股份有限公司 | The low distortion of wide-angle is without thermalization camera lens |
| CN110109231B (en) * | 2019-04-28 | 2020-06-02 | 华中科技大学 | Numerical control automatic microwave imaging lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2177758A1 (en) * | 1995-06-02 | 1996-12-03 | Doug Anderson | Offset zoom lens for reflective light modulators |
| CN201133963Y (en) * | 2007-12-25 | 2008-10-15 | 叶明华 | Day and night dual-purpose -type fixed focus lens possessing infrared night viewing function |
| CN202771095U (en) * | 2012-06-11 | 2013-03-06 | 苏州莱能士光电科技有限公司 | High-resolution undistorted day and night double-function type optical lens |
| CN203455537U (en) * | 2013-08-27 | 2014-02-26 | 福建福光数码科技有限公司 | Ten-million-pixel large-target-surface night and day miniature camera lens |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4744711B2 (en) * | 2001-04-02 | 2011-08-10 | 富士フイルム株式会社 | Image capture lens |
| JP4280538B2 (en) * | 2003-04-18 | 2009-06-17 | フジノン株式会社 | Zoom lens |
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2013
- 2013-08-27 CN CN201310375728.8A patent/CN103399391B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2177758A1 (en) * | 1995-06-02 | 1996-12-03 | Doug Anderson | Offset zoom lens for reflective light modulators |
| CN201133963Y (en) * | 2007-12-25 | 2008-10-15 | 叶明华 | Day and night dual-purpose -type fixed focus lens possessing infrared night viewing function |
| CN202771095U (en) * | 2012-06-11 | 2013-03-06 | 苏州莱能士光电科技有限公司 | High-resolution undistorted day and night double-function type optical lens |
| CN203455537U (en) * | 2013-08-27 | 2014-02-26 | 福建福光数码科技有限公司 | Ten-million-pixel large-target-surface night and day miniature camera lens |
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Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Applicant after: FUJIAN FORECAM CO., LTD. Address before: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Applicant before: Fujian Forecam Optics Co., Ltd. |
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