CN102279458B - Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens - Google Patents
Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens Download PDFInfo
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- CN102279458B CN102279458B CN201110206775.0A CN201110206775A CN102279458B CN 102279458 B CN102279458 B CN 102279458B CN 201110206775 A CN201110206775 A CN 201110206775A CN 102279458 B CN102279458 B CN 102279458B
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Abstract
The invention relates to an ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens, which is characterized in that a front lens set A and a rear lens set B are respectively arranged along the incidence direction of light rays from left to right, wherein the front lens set A comprises a negative crescent-shaped lens A-1 and a negative crescent-shaped lens A-2, and the focal length f = -2.95mm; and the rear lens set B is formed by closely connected double-glued groups comprising a drum-shaped lens B-1, a double-convex lens B-2 and a negative crescent-shaped lens B-3, and the focal length f = 4.4mm. The ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens provided by the invention has the advantages of ultra wide angle, large relative aperture, high resolution, wide spectral confocality and the like, and can be widely applied to mini television monitoring and picture pick-up systems.
Description
Technical field
The present invention relates to a kind of super wide-angle high resolution day and night micro pick-up lens, be applied to the micro-television monitored video camera system.
Background technology
The appearance of micro television rig camera and the history in existing 20～30 years of application, there are the micro pick-up lens of various specifications and models and it supporting, their performance index are very different, great majority belong to low grade products, performance index are low, can only adapt to the common camera of 20～300,000 pixels, the spectral range of adaptation is narrow, can only use under the light condition in the daytime of 480nm～650nm.
Summary of the invention
The object of the present invention is to provide a kind of super wide-angle high resolution day and night micro pick-up lens, the present invention is in order to adapt to miniature video camera to the high definition future development, promote the image quality of miniature video camera system, enlarge the range of application of miniature camera system, overcome the low defective of performance index of micro pick-up lens prior art, be devoted to the high resolving power of micro pick-up lens and the research of wide spectrum confocal technology, for the miniature video camera system provides a kind of super wide-angle, resolution is better than 2,000,000 pixel day and night micro pick-up lens.
The invention is characterized in: a kind of super wide-angle high resolution day and night micro pick-up lens, it is characterized in that: along light from left to right incident direction be respectively arranged with front lens group A and rear mirror group B, described front lens group A is made of the first negative selenodont lens (A-1) and the second negative selenodont lens (A-2), and focal length is f
=-2.95mm; Described rear mirror group B is by drum type lens (B-1), and biconvex lens (B-2) consists of with two gummed groups that the 3rd negative selenodont lens (B-3) connect airtight, and focal length is f
=4.4mm; Airspace between described front lens group A and the rear mirror group B is 0.92mm; The airspace of the described first negative selenodont lens (A-1) and the second negative selenodont lens (A-2) is 2.75mm; Described drum type lens (B-1) and biconvex lens (B-2) are 0.76mm with the airspace of the cemented doublet that the 3rd negative selenodont lens (B-3) connect airtight.
Advantage of the present invention:
1. the retrofocus type structure that adopts positive negative power to separate, the focal distance f of front lens group A
=-2.95mm, the focal distance f of rear mirror group B
=4.4mm after the combination of two constituent elements, makes the rear main face forward shift of camera lens, the rear cut-off distance l of camera lens
＞=1.6f
2. two of the front lens group A of camera lens negative selenodont lens are all selected the glass of high index of refraction (n＞=1.69), they have born very large focal power, make the oblique ray of super wide-angle, through after the front lens group, fast " convergence ', greatly reduce with the slanted angle of optical axis; through after after mirror group B reflects; the angle of outgoing chief ray and optical axis reduces, and makes camera lens realize that good aberration correction is arranged in the full field range, and makes the uniform-illumination of image planes.See Fig. 2;
3. place drum type lens B-1 in the Guang Lan back of camera lens, utilize it to come the aberration of corrective lens, make the resolution of camera lens up to 2,000,000 pixels.
Description of drawings
Fig. 1 is embodiment of the invention lens laying structure synoptic diagram.
Fig. 2 is embodiment of the invention light channel structure synoptic diagram.
Embodiment
With reference to figure 1 and Fig. 2, a kind of super wide-angle high resolution day and night micro pick-up lens, it is characterized in that: along light from left to right incident direction be respectively arranged with front lens group A and rear mirror group B, described front lens group A is made of negative selenodont lens A-1 and negative selenodont A-2, focal length is f
=-2.95mm; Described rear mirror group B is by drum type lens B-1, and two gummed groups that biconvex lens B-2 and negative selenodont lens B-3 connect airtight consist of, and focal length is f
=4.4mm.
Airspace between above-mentioned front lens group A and the rear mirror group B is 0.92mm; The airspace of described negative selenodont lens A-1 and negative selenodont A-2 is 2.75mm; The airspace of the cemented doublet that described drum type lens B-1 and biconvex lens B-2 and negative selenodont lens B-3 connect airtight is 0.76mm.
Also be provided with fixed diaphram between above-mentioned front lens group A and the rear mirror group B.
The optical index that the present invention reaches:
1. focal length: f '=3.6;
2. relative aperture F=1.6;
3. field angle: 2w 〉=120 ° (as the side as visual field 2 η ' 〉=Ф 6mm);
4. resolution: can be adaptive with 2,000,000 pixel high-resolution CCD or cmos camera;
5. light path overall length ∑≤23mm, optics rear cut-off distance l ' 〉=6mm;
6. be suitable for spectral line scope: 480nm～850nm.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. super wide-angle high resolution day and night micro pick-up lens, it is characterized in that: along light from left to right incident direction be respectively arranged with front lens group A and rear mirror group B, described front lens group A is made of the first negative selenodont lens (A-1) and the second negative selenodont lens (A-2), and focal length is f
=-2.95mm; Described rear mirror group B is by drum type lens (B-1), and biconvex lens (B-2) consists of with two gummed groups that the 3rd negative selenodont lens (B-3) connect airtight, and focal length is f
=4.4mm; Airspace between described front lens group A and the rear mirror group B is 0.92mm; The airspace of the described first negative selenodont lens (A-1) and the second negative selenodont lens (A-2) is 2.75mm; Described drum type lens (B-1) and biconvex lens (B-2) are 0.76mm with the airspace of the cemented doublet that the 3rd negative selenodont lens (B-3) connect airtight.
2. super wide-angle high resolution day and night micro pick-up lens according to claim 1 is characterized in that: also be provided with fixed diaphram between described front lens group A and the rear mirror group B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110206775.0A CN102279458B (en) | 2011-07-22 | 2011-07-22 | Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110206775.0A CN102279458B (en) | 2011-07-22 | 2011-07-22 | Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102279458A CN102279458A (en) | 2011-12-14 |
| CN102279458B true CN102279458B (en) | 2013-03-20 |
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|---|---|---|---|
| CN201110206775.0A Active CN102279458B (en) | 2011-07-22 | 2011-07-22 | Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439782B (en) * | 2013-08-15 | 2015-08-12 | 福建福光数码科技有限公司 | 2.8 focus bugeye lens |
| CN105242377A (en) * | 2015-11-05 | 2016-01-13 | 福建福光股份有限公司 | High-resolution economic 2.6mm lens |
| CN111856767B (en) | 2019-04-24 | 2022-09-23 | 信泰光学(深圳)有限公司 | Distance measuring instrument and display lens group device thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644823A (en) * | 2009-09-16 | 2010-02-10 | 福建福光数码科技有限公司 | Wide-angle low-light high-resolution lens |
| CN101859016A (en) * | 2009-04-03 | 2010-10-13 | 株式会社理光 | Wide-angle lens and image pick up equipment |
| CN101859020A (en) * | 2009-04-01 | 2010-10-13 | 三星数码影像株式会社 | Zoom lens and the imaging optical device that comprises this zoom lens |
| CN202177734U (en) * | 2011-07-22 | 2012-03-28 | 福建福光数码科技有限公司 | Day and night mini camera lens having super wide angle and high resolution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4919712B2 (en) * | 2006-06-20 | 2012-04-18 | 株式会社シグマ | Fisheye lens |
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2011
- 2011-07-22 CN CN201110206775.0A patent/CN102279458B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859020A (en) * | 2009-04-01 | 2010-10-13 | 三星数码影像株式会社 | Zoom lens and the imaging optical device that comprises this zoom lens |
| CN101859016A (en) * | 2009-04-03 | 2010-10-13 | 株式会社理光 | Wide-angle lens and image pick up equipment |
| CN101644823A (en) * | 2009-09-16 | 2010-02-10 | 福建福光数码科技有限公司 | Wide-angle low-light high-resolution lens |
| CN202177734U (en) * | 2011-07-22 | 2012-03-28 | 福建福光数码科技有限公司 | Day and night mini camera lens having super wide angle and high resolution |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-3108A 2008.01.10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20111214 Assignee: FUJIAN FUGUANG TIANTONG OPTICS CO., LTD. Assignor: Fujian Forecam Optics Co., Ltd. Contract record no.: 2013350000082 Denomination of invention: Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens Granted publication date: 20130320 License type: Exclusive License Record date: 20130626 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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. |
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| CP03 | Change of name, title or address |
Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Patentee after: FUJIAN FORECAM CO., LTD. Address before: 350015, No. 87 Jun Zhu Road, Mawei District, Fujian, Fuzhou Patentee before: Fujian Forecam Optics Co., Ltd. |