CN204556943U - High resolving power, low distortion day and night tight shot - Google Patents
High resolving power, low distortion day and night tight shot Download PDFInfo
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- CN204556943U CN204556943U CN201520117568.1U CN201520117568U CN204556943U CN 204556943 U CN204556943 U CN 204556943U CN 201520117568 U CN201520117568 U CN 201520117568U CN 204556943 U CN204556943 U CN 204556943U
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Abstract
The utility model relates to a kind of high resolving power, low distortion day and night tight shot, in its optical system along light direction be provided with successively focal power be negative before to organize A, light hurdle C and focal power be positive rear group, the first gummed group that before described, group A is provided with negative selenodont lens A-1, negative selenodont lens A-2, biconcave lens A-3 successively and is touched by negative selenodont lens A-4 and negative selenodont lens A-5, described rear group of B is provided with biconcave lens B-1, the second gummed group of being touched by negative selenodont lens B-2 and negative selenodont lens B-3 and biconvex lens B-4 successively.This camera lens has high resolving power, the advantage such as object lens of large relative aperture, day and night confocal, low distortion, can not only blur-free imaging under photoenvironment in the daytime, and under night pole low-light (level) environment, by infrared light filling, also can blur-free imaging.
Description
Technical field
The utility model relates to the imaging lens device of supervisory system, particularly a kind of high resolving power, low distortion day and night tight shot.
Background technology
Along with the fast development of science and technology, the raising gradually of people's awareness of safety, promote the continuous progress in security protection market.At present, market early has various tight shot to be applied in supervisory system, appearance and the application of micro television CCTV camera also have the history of 20 ~ 30 years, have the micro pick-up lens of multiple different size model supporting with it.Their performance index are very different, great majority belong to low grade products, performance index are low, although some can reach the requirement of high definition, but there are many defects when monitoring little space in high-resolution wide-angle, meet if think when having the advantages such as high resolving power, object lens of large relative aperture, day and night confocal, low distortion simultaneously, often need more high cost.And the spectral range adapted to is narrower, 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.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of high resolving power, the low distortion day and night tight shot that possess high resolving power, the advantage such as object lens of large relative aperture, day and night confocal, low distortion.
To achieve these goals, the technical solution of the utility model is: a kind of high resolving power, low distortion day and night tight shot, in the optical system of described camera lens along light direction be provided with successively focal power be negative before organize A, light hurdle C and focal power are positive rear group, before described, group A is provided with negative selenodont lens A-1 successively, negative selenodont lens A-2, biconcave lens A-3 and the first gummed group of being touched by negative selenodont lens A-4 and negative selenodont lens A-5, described rear group of B is provided with biconcave lens B-1 successively, the second gummed group of being touched by negative selenodont lens B-2 and negative selenodont lens B-3 and biconvex lens B-4.
Further, the airspace between described front group of A and rear group of B is 1.56mm.
Further, the first gummed group before described in group A and the airspace between light hurdle C are 0.8mm, and the airspace between the biconcave lens B-1 in described rear group of B and light hurdle C is 0.76mm.
Further, airspace between negative selenodont lens A-1 before described in group A and negative selenodont lens A-2 is 0.59mm, airspace between described negative selenodont lens A-2 and biconcave lens A-3 is 1.37mm, and the airspace between described biconcave lens A-3 and the first gummed group is 0.81mm.
Further, the biconcave lens B-1 in described rear group of B and the airspace between the second gummed group are 0.44mm, and the airspace between described second gummed group and biconvex lens B-4 is 0.11mm.
Compared with prior art, the utility model has following beneficial effect:
(1) when optical design, aberration correction and balance are carried out to the wide spectral range of 480 ~ 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, and under night pole low-light (level) environment, by infrared light filling, also can blur-free imaging.
(2) optical glass material of high refraction, low dispersion can be selected, by computer optics Computer Aided Design and optimization, correct the various aberrations of optical lens, make camera lens realize the advantage such as high resolving power, object lens of large relative aperture, day and night confocal, low distortion.The distortion of this system is less, below 1%; And the distortion of common lens all can be larger, this system has had better control relative to old structural aberration.
(3) when structural design, both ensured the accurate of the concentricity of camera lens, precision and axial location, made again the compact conformation of camera lens, attractive in appearance as far as possible.Consider again the practicality of camera lens, have employed front and back end two head group and enter structure, the Assembly stability of camera lens is improved, thus reaches the high pixel of camera lens, low distortion.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the optical system diagram of the utility model embodiment.
Fig. 2 is the mechanical construction drawing of the utility model embodiment.
In figure: settle mirror group before A., A-1. bears crescent moon lens A-1, A-2. positive crescent moon lens A-2, A-3. biconvex lens A-3, A-4. positive crescent moon lens A-4; B. zoom mirror group, B-1. biconcave lens lens B-1, B-2. biconcave lens B-2, B-3. biconvex lens B-3; 1-body tube, trim ring before 2-, 3-first spacer ring, 4-second spacer ring, trim ring after 5-.
Embodiment
As shown in Figure 1, a kind of high resolving power, low distortion day and night tight shot, in the optical system of described camera lens along light from left to right incident direction be provided with successively focal power be negative before organize A, light hurdle C and focal power are positive rear group, before described, group A is provided with negative selenodont lens A-1 successively, negative selenodont lens A-2, biconcave lens A-3 and the first gummed group of being touched by negative selenodont lens A-4 and negative selenodont lens A-5, described rear group of B is provided with biconcave lens B-1 successively, the second gummed group of being touched by negative selenodont lens B-2 and negative selenodont lens B-3 and biconvex lens B-4.
In the present embodiment, the airspace between described front group of A and rear group of B is 1.56mm, and the first gummed group before described in group A and the airspace between light hurdle C are 0.8mm, and the airspace between the biconcave lens B-1 in described rear group of B and light hurdle C is 0.76mm.
In the present embodiment, airspace between negative selenodont lens A-1 before described in group A and negative selenodont lens A-2 is 0.59mm, airspace between described negative selenodont lens A-2 and biconcave lens A-3 is 1.37mm, and the airspace between described biconcave lens A-3 and the first gummed group is 0.81mm.
In the present embodiment, the biconcave lens B-1 in described rear group of B and the airspace between the second gummed group are 0.44mm, and the airspace between described second gummed group and biconvex lens B-4 is 0.11mm.
In the present embodiment, this high resolving power, low distortion day and night tight shot reach following technical indicator: (1) focal length: f '=6.7mm; (2) relative aperture: F=2.0; (3) field angle: 2w >=63 °; (4) resolution: can be adaptive with 5,000,000 pixel high-resolution CCD or cmos camera; (5) light path overall length ∑≤22.73mm, optics rear cut-off distance l ' >=6.63mm; (6) spectral line scope: 480nm ~ 850nm is suitable for.
As shown in Figure 2, the physical construction of described camera lens comprises body tube 1, described front group of A and rear group of B is arranged in body tube 1, be fixed by front trim ring 2 on front side of described negative selenodont lens A-1, the first spacer ring 3 is provided with between described negative selenodont lens A-1 and negative selenodont lens A-2, locate respectively by the step in body tube 1 on rear side of described first gummed group He on front side of biconcave lens B-1, be provided with the second spacer ring 4 between described second gummed group and biconvex lens B-4, be fixed by rear trim ring 5 on rear side of described biconvex lens B-4.
In the present embodiment, described body tube 1, first spacer ring 3 and the second spacer ring 4 process by advanced precision machine tool; Described body tube 1 pair of hole internal diameter has carried out strict size management and control, it is made to coordinate tight ness rating to reach the right alignment of eyeglass installation requirement and the consistance of all lens light axis with eyeglass, body tube 1 has strict size and status requirement, and external diameter uses M12 × 0.5 thread; Described first spacer ring 3 and the second spacer ring 4 ensure that the airspace between corresponding eyeglass, and the plane of they and lens contacts has enough accurate verticality to ensure the accuracy that eyeglass assembles.
In the present embodiment, described first spacer ring 3 and the second spacer ring 4 all adopt staged spacer ring, and described staged spacer ring endoporus is provided with delustring line, can eliminate parasitic light and halation better, also assures that logical light and the optical axis assembling of eyeglass simultaneously.The internal thread of described front trim ring 2 matches with the external thread of body tube 1 front end, and the external thread of described rear trim ring 5 matches with the internal thread of body tube 1 rear end, ensure that the rigging position of whole arrangement of mirrors sheet is fixing and stable.
Tested known by reality, this lens imaging can reach five mega pixels by day, night this lens imaging also can reach five mega pixels, can be adaptive with the CCD of high definition or cmos camera, realize high definition video shooting; This lens distortion, lower than 1%, realizes the blur-free imaging of short close-shot distance.The utility model improves the requirement of people to video camera, can adapt to 5,000,000 pixels, high definition and the requirement of low distortion video camera.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (8)
1. a high resolving power, low distortion day and night tight shot, it is characterized in that: in the optical system of described camera lens along light direction be provided with successively focal power be negative before organize A, light hurdle C and focal power are positive rear group, before described, group A is provided with negative selenodont lens A-1 successively, negative selenodont lens A-2, biconcave lens A-3 and the first gummed group of being touched by negative selenodont lens A-4 and negative selenodont lens A-5, described rear group of B is provided with biconcave lens B-1 successively, the second gummed group of being touched by negative selenodont lens B-2 and negative selenodont lens B-3 and biconvex lens B-4.
2. high resolving power according to claim 1, low distortion day and night tight shot, is characterized in that: the airspace between described front group of A and rear group of B is 1.56mm.
3. high resolving power according to claim 2, low distortion day and night tight shot, it is characterized in that: the first gummed group before described in group A and the airspace between light hurdle C are 0.8mm, and the airspace between the biconcave lens B-1 in described rear group of B and light hurdle C is 0.76mm.
4. high resolving power according to claim 1 and 2, low distortion day and night tight shot, it is characterized in that: the airspace between the negative selenodont lens A-1 before described in group A and negative selenodont lens A-2 is 0.59mm, airspace between described negative selenodont lens A-2 and biconcave lens A-3 is 1.37mm, and the airspace between described biconcave lens A-3 and the first gummed group is 0.81mm.
5. high resolving power according to claim 1 and 2, low distortion day and night tight shot, it is characterized in that: the biconcave lens B-1 in described rear group of B and the airspace between the second gummed group are 0.44mm, and the airspace between described second gummed group and biconvex lens B-4 is 0.11mm.
6. high resolving power according to claim 1 and 2, low distortion day and night tight shot, it is characterized in that: described front group of A and rear group of B is arranged in body tube, be fixed by front trim ring on front side of described negative selenodont lens A-1, the first spacer ring is provided with between described negative selenodont lens A-1 and negative selenodont lens A-2, locate respectively by the step in body tube on rear side of described first gummed group He on front side of biconcave lens B-1, be provided with the second spacer ring between described second gummed group and biconvex lens B-4, be fixed by rear trim ring on rear side of described biconvex lens B-4.
7. high resolving power according to claim 6, low distortion day and night tight shot, is characterized in that: described first spacer ring and the second spacer ring all adopt staged spacer ring, and described staged spacer ring endoporus is provided with delustring line.
8. high resolving power according to claim 6, low distortion day and night tight shot, it is characterized in that: the internal thread of described front trim ring matches with the external thread of body tube front end, the external thread of described rear trim ring matches with the internal thread of body tube rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117568.1U CN204556943U (en) | 2015-02-27 | 2015-02-27 | High resolving power, low distortion day and night tight shot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117568.1U CN204556943U (en) | 2015-02-27 | 2015-02-27 | High resolving power, low distortion day and night tight shot |
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| Publication Number | Publication Date |
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| CN204556943U true CN204556943U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520117568.1U Expired - Fee Related CN204556943U (en) | 2015-02-27 | 2015-02-27 | High resolving power, low distortion day and night tight shot |
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| CN (1) | CN204556943U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656227A (en) * | 2015-02-27 | 2015-05-27 | 福建福光数码科技有限公司 | Day and night prime lens with high resolution and low distortion |
| CN107643587A (en) * | 2017-11-11 | 2018-01-30 | 福建福光股份有限公司 | 5.2mm day and night ultra high-definition 4K tight shots |
| CN110426820A (en) * | 2019-08-14 | 2019-11-08 | 福建福光天瞳光学有限公司 | Low distortion broad spectrum high resolution Penetrating Fog telephotography camera lens and its assembly method |
-
2015
- 2015-02-27 CN CN201520117568.1U patent/CN204556943U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656227A (en) * | 2015-02-27 | 2015-05-27 | 福建福光数码科技有限公司 | Day and night prime lens with high resolution and low distortion |
| CN107643587A (en) * | 2017-11-11 | 2018-01-30 | 福建福光股份有限公司 | 5.2mm day and night ultra high-definition 4K tight shots |
| CN107643587B (en) * | 2017-11-11 | 2020-06-26 | 福建福光股份有限公司 | 5.2mm day and night dual-purpose super-high-definition 4K prime lens |
| CN110426820A (en) * | 2019-08-14 | 2019-11-08 | 福建福光天瞳光学有限公司 | Low distortion broad spectrum high resolution Penetrating Fog telephotography camera lens and its assembly method |
| CN110426820B (en) * | 2019-08-14 | 2023-08-15 | 福建福光天瞳光学有限公司 | Low-distortion wide-spectrum high-resolution fog-penetrating television camera lens and assembly method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUJIAN FORECAM CO., LTD. Free format text: FORMER NAME: FUJIAN FORECAM DIGITAL TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Patentee after: FUJIAN FORECAM CO., LTD. Address before: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Patentee before: Fujian Forecam Optics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20170227 |