CN202177734U - Day and night mini camera lens having super wide angle and high resolution - Google Patents
Day and night mini camera lens having super wide angle and high resolution Download PDFInfo
- Publication number
- CN202177734U CN202177734U CN2011202614635U CN201120261463U CN202177734U CN 202177734 U CN202177734 U CN 202177734U CN 2011202614635 U CN2011202614635 U CN 2011202614635U CN 201120261463 U CN201120261463 U CN 201120261463U CN 202177734 U CN202177734 U CN 202177734U
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- lens
- high resolution
- wide angle
- night
- day
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Abstract
The utility model relates to a day and night mini camera lens having super wide angle and high resolution. A front lens unit A and a rear lens unit B are disposed along an incoming direction of a light from left to right. The front lens unit is composed of a negative meniscus lens A-1 and a negative meniscus lens A-2. The focus f is -2.95 mm. The rear lens group is composed of a double bonding unit formed by connecting a drum lens B-1 and a biconvex lens B-2 with a negative meniscus lens in a sealing manner. The focus f is 4.4 mm. The day and night mini camera lens having the super wide angle and the high resolution in the utility model has advantages of super wide angle, large relative aperture, high resolution, wide spectrum and the like. The day and night mini camera lens having the super wide angle and the high resolution in the utility model can be widely used for mini television monitoring camera system.
Description
Technical field
The utility model is related to a kind of ultra-wide angle high resolution day and night micro pick-up lens, applied to micro-television monitored video camera system.
Background technology
The appearance of micro television CCTV camera and existing 20~30 years history of application, there are the micro pick-up lens of various specifications and models supporting with it, their performance indications are very different, it is most of to belong to low grade products, performance indications are low, the common camera of 20~300,000 pixels can only be adapted to, the spectral region of adaptation is narrow, can only be used under 480nm~650nm daytime light condition.
The content of the invention
The purpose of this utility model is to provide a kind of ultra-wide angle high resolution day and night micro pick-up lens, the utility model is to develop to adapt to miniature video camera to fine definition direction, lift the image quality of miniature video camera system, expand the application of miniature camera system, the defect for overcoming the performance indications of micro pick-up lens prior art low, it is directed to the high-resolution of micro pick-up lens and the research of wide spectrum confocal technology, a kind of ultra-wide angle is provided for miniature video camera system, resolution ratio is better than 2,000,000 pixel day and night micro pick-up lens.
It is of the present utility model to be characterised by：A kind of ultra-wide angle high resolution day and night micro pick-up lens, it is characterised in that：Along light, incident direction is respectively arranged with front lens group A and rear microscope group B from left to right, and the front lens group A is made up of negative selenodont lens A-1 and negative selenodont A-2, and focal length is f
=-2.95mm；The rear microscope group B is made up of drum type lens B-1, biconvex lens B-2 and negative selenodont lens the B-3 double gluing units touched, and focal length is f
=4.4mm。
Advantage of the present utility model：
1. the retrofocus type structure separated using positive negative power, front lens group A focal length f=-2.95mm, rear microscope group B focal length f
=4.4mm, after the combination of two constituent elements, makes the back interarea of camera lens move forward, the rear cut-off distance l of camera lens
≧1.6f
；
The front lens group A of camera lens two panels bears selenodont lens and all selects high index of refraction（n≧1.69）Glass, they assume responsibility for very big focal power, make the skew ray of ultra-wide angle, after front lens group, quick " convergence ', greatly reduced with the slanted angle of optical axis; after after microscope group B refractions; the angle of outgoing chief ray and optical axis reduces, and realizing camera lens has excellent aberration correction in the range of full filed, and makes the uniform-illumination of image planes.See Fig. 2；
2. placing drum type lens B-1 behind the light bar of camera lens, the aberration of corrective lens is utilized to, makes the high resolution of camera lens up to 2,000,000 pixels.
Brief description of the drawings
Fig. 1 is the utility model embodiment lens laying structure schematic diagram.
Fig. 2 is the utility model embodiment light channel structure schematic diagram.
Embodiment
With reference to Fig. 1 and Fig. 2, a kind of ultra-wide angle high resolution day and night micro pick-up lens, it is characterised in that：Along light, incident direction is respectively arranged with front lens group A and rear microscope group B from left to right, and the front lens group A is made up of negative selenodont lens A-1 and negative selenodont A-2, and focal length is f
=-2.95mm；The rear microscope group B is made up of drum type lens B-1, biconvex lens B-2 and negative selenodont lens the B-3 double gluing units touched, and focal length is f
=4.4mm。
Airspace between above-mentioned front lens group A and rear microscope group B is 0.92mm；The airspace of the negative selenodont lens A-1 and negative selenodont A-2 are 2.75mm；The airspace of the drum type lens B-1 and biconvex lens B-2 and the negative selenodont lens B-3 cemented doublets touched is 0.76mm.
Fixed diaphram is additionally provided between above-mentioned front lens group A and rear microscope group B.
The optical index that the utility model reaches：
1. focal length：f′=3.6；
2. relative aperture F=1.6；
3. the angle of visual field：2w >=120 ° (image space is as the η ' of visual field 2 >=Ф 6mm)；
4. resolution ratio：It can be adapted to 2,000,000 pixel high-resolution CCD or cmos camera；
5. total length of light path ∑≤23mm, optics rear cut-off distance l ' >=6mm；
6. it is applicable spectral line scope：480nm~850nm.
Preferred embodiment of the present utility model is the foregoing is only, all equivalent changes and modifications done according to present utility model application the scope of the claims should all belong to covering scope of the present utility model.
Claims (3)
1. a kind of ultra-wide angle high resolution day and night micro pick-up lens, it is characterised in that：Along light, incident direction is respectively arranged with front lens group A and rear microscope group B from left to right, and the front lens group A is made up of negative selenodont lens A-1 and negative selenodont A-2, and focal length is f
=-2.95mm；The rear microscope group B is made up of drum type lens B-1, biconvex lens B-2 and negative selenodont lens the B-3 double gluing units touched, and focal length is f
=4.4mm。
2. ultra-wide angle high resolution day and night micro pick-up lens according to claim 1, it is characterised in that：Airspace between the front lens group A and rear microscope group B is 0.92mm；The airspace of the negative selenodont lens A-1 and negative selenodont A-2 are 2.75mm；The airspace of the drum type lens B-1 and biconvex lens B-2 and the negative selenodont lens B-3 cemented doublets touched is 0.76mm.
3. ultra-wide angle high resolution day and night micro pick-up lens according to claim 1, it is characterised in that：Fixed diaphram is additionally provided between the front lens group A and rear microscope group B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202614635U CN202177734U (en) | 2011-07-22 | 2011-07-22 | Day and night mini camera lens having super wide angle and high resolution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202614635U CN202177734U (en) | 2011-07-22 | 2011-07-22 | Day and night mini camera lens having super wide angle and high resolution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202177734U true CN202177734U (en) | 2012-03-28 |
Family
ID=45867607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202614635U Withdrawn - After Issue CN202177734U (en) | 2011-07-22 | 2011-07-22 | Day and night mini camera lens having super wide angle and high resolution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202177734U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279458A (en) * | 2011-07-22 | 2011-12-14 | 福建福光数码科技有限公司 | Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens |
| CN103543518A (en) * | 2013-11-15 | 2014-01-29 | 哈尔滨工业大学 | Wide-angle lens applied to LED lighting optical communication system |
| CN110673302A (en) * | 2019-09-04 | 2020-01-10 | 福建福光股份有限公司 | Super wide-angle lens |
-
2011
- 2011-07-22 CN CN2011202614635U patent/CN202177734U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279458A (en) * | 2011-07-22 | 2011-12-14 | 福建福光数码科技有限公司 | Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens |
| CN102279458B (en) * | 2011-07-22 | 2013-03-20 | 福建福光数码科技有限公司 | Ultra wide-angle high-resolution day and night dual-purpose mini-type pick-up lens |
| CN103543518A (en) * | 2013-11-15 | 2014-01-29 | 哈尔滨工业大学 | Wide-angle lens applied to LED lighting optical communication system |
| CN103543518B (en) * | 2013-11-15 | 2015-09-16 | 哈尔滨工业大学 | Be applied to the wide-angle lens of LED illumination optical communication system |
| CN110673302A (en) * | 2019-09-04 | 2020-01-10 | 福建福光股份有限公司 | Super wide-angle lens |
| CN110673302B (en) * | 2019-09-04 | 2021-07-30 | 福建福光股份有限公司 | Super wide-angle lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120328 Effective date of abandoning: 20130320 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120328 Effective date of abandoning: 20130320 |
|
| RGAV | Abandon patent right to avoid regrant |