CN203759343U - Small-target-surface high-resolution ultra-wide-angle fish-eye lens - Google Patents
Small-target-surface high-resolution ultra-wide-angle fish-eye lens Download PDFInfo
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- CN203759343U CN203759343U CN201420100258.4U CN201420100258U CN203759343U CN 203759343 U CN203759343 U CN 203759343U CN 201420100258 U CN201420100258 U CN 201420100258U CN 203759343 U CN203759343 U CN 203759343U
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Abstract
The utility model relates to a small-target-surface high-resolution ultra-wide-angle fish-eye lens. A former group A of a lens group and a rear group B are successively arranged in an optical system of a lens along a light incidence direction from left to right. A diaphragm C is arranged between the former group A and the rear group B. The former group A comprises a negative selenodont lens A-1, a negative selenodont lens A-2, a double-concave lens A-3 and a double-concave lens A-4 which are successively arranged from left to right. The rear group B comprises a double-concave lens B-1, a double-concave lens B-2, an agglutination group which is tightly contacted with a negative selenodont lens B-3 and a double-concave lens B-4. The small-target-surface high-resolution ultra-wide-angle fish-eye lens possesses full field-of-view, waterproof, dustproof, scratch-resistant and day-and-night performance and can be used for security and protection monitoring of a super large field of view, especially in halls of a hotel, a club and the like.
Description
Technical field
The utility model relates to the super wide-angle fish eye lens of a kind of little target surface high resolving power, belongs to the optical pick-up apparatus field of video technique.
Background technology
The appearance of micro television CCTV camera and the application history of existing 20～30 years, there is the micro pick-up lens of varied specifications and models supporting with it. their performance index difference is very big, the limitation of application is large, and great majority belong to low grade products, performance index are low, and majority can only apply to generally only adapt to the common camera of 20～300,000 pixels, and the spectral range of adaptation is narrow, can only under light condition, use in the daytime of 480nm～700nm, field angle and close-shot are large apart from limitation.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of full visual field, the super wide-angle fish eye lens of little target surface high resolving power of waterproof and dustproof, scratch resistant and day and night, adapt to the requirement of the high definition of miniature video camera, and meet the application of the particular places such as hotel, club, stadium, promote the image quality of miniature video camera system, expand the maximum monitoring range of miniature camera system, and tackle the request for utilization of outdoor various rugged surroundings.
The utility model adopts following scheme to realize: the super wide-angle fish eye lens of a kind of little target surface high resolving power, in the optical system of described camera lens along light from left to right incident direction before being provided with successively lens set, organize A and rear group of B, between described front group of A and rear group of B, be provided with light hurdle C, described front group of A comprises the negative selenodont lens A-1 setting gradually from left to right, negative selenodont lens A-2, biconcave lens A-3 and biconvex lens A-4; Described rear group of B comprises the biconvex lens B-1 setting gradually from left to right, gummed group and biconvex lens B-4 that biconvex lens B-2 and negative crescent moon lens B-3 connect airtight.
Further, the airspace between described front group of A and rear group of B is 4.25mm, and wherein the airspace between front group A and light hurdle C is 2.33mm, and the airspace between light hurdle C and rear group of B is 1.92mm.
Further, on the convex surface of described negative selenodont lens A-1, be coated with Buddha's warrior attendant film.
Further, airspace between described negative selenodont lens A-1 and negative selenodont lens A-2 is 1.88mm, airspace between described negative selenodont lens A-2 and biconcave lens A-3 is 3.05mm, and the airspace between described biconcave lens A-3 and biconvex lens A-4 is 0.52mm.
Further, between the gummed group that described biconvex lens B-1 and biconvex lens B-2 and negative crescent moon lens B-3 connect airtight, be spaced apart 0.1mm, the airspace between described gummed group and described biconvex lens B-4 is 0.1mm.
Further, described camera lens physical construction comprises body tube, and A is organized before lens set is installed in described body tube inner chamber front portion, and body tube inner chamber rear portion is provided with rear group of B.
Further, the front end of described body tube is provided with the front trim ring that can block described negative selenodont lens A-1 peripheral part, between described negative selenodont lens A-2 and biconcave lens A-3, be folded with spacer ring BC, between described biconcave lens A-3 and biconvex lens A-4, be folded with spacer ring CD, between described front group of A and described rear group of B, be folded with spacer ring DE, between the gummed group that described biconvex lens B-1 and biconvex lens B-2 and negative crescent moon lens B-3 connect airtight, be folded with spacer ring FG, between described gummed group and described biconvex lens B-4, be folded with spacer ring GH.
Compared with prior art, the utlity model has following beneficial effect:
(1) in structure, meet the strict demand of optical design to air distance and eyeglass concentricity, make the compact conformation of camera lens, volume is little, lightweight.
(2) camera lens is realized full visual field, high resolving power, more meets the requirement of large space of a whole page high definition video shooting, is applicable to the shooting of panorama machine.
(3) in the time of optical design, the wide spectral range of 400～850nm is carried out to aberration correction and balance, make camera lens all there is good picture element at wide spectral range, realize wide spectrum confocal.Like this camera lens can not only photoenvironment in the daytime under blur-free imaging, under night utmost point low-light (level) environment, by infrared light filling, also can blur-free imaging.
Brief description of the drawings
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;
The MTF curve on daytime that Fig. 3 provides for computer-aided software engineering;
The night vision MTF curve that Fig. 4 provides for computer-aided software engineering;
Trim ring 10-spacer ring BC 11-spacer ring CD 12-spacer ring DE 13-spacer ring FG 14-spacer ring GH 15-body tube 16-convex shoulder before the negative crescent moon lens B-3 8-biconvex lens B-4 9-of the negative selenodont lens A-2 3-biconcave lens A-3 4-biconvex lens A-4 5-biconvex lens B-1 6-biconvex lens B-2 7-of the negative selenodont lens A-1 2-of number in the figure explanation: 1-.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below will, by specific embodiment and relevant drawings, the utility model be described in further detail.
As shown in Figure 1, the super wide-angle fish eye lens of a kind of little target surface high resolving power, in the optical system of described camera lens along light from left to right incident direction before being provided with successively lens set, organize A and rear group of B, between described front group of A and rear group of B, be provided with light hurdle C, described front group of A comprises the negative selenodont lens A-1 (1) setting gradually from left to right, negative selenodont 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) setting gradually from left to right, the gummed group that biconvex lens B-2 (6) and negative crescent moon lens B-3 (7) connect airtight and biconvex lens B-4 (8).
In the present embodiment, the airspace between described front group of A and rear group of B is 4.25mm, and wherein the airspace between front group A and light hurdle C is 2.33mm, and the airspace between light hurdle C and rear group of B is 1.92mm.
In the present embodiment, on the convex surface of described negative selenodont lens A-1 (1), be coated with Buddha's warrior attendant film, to possess good scratch resistant effect.
In the present embodiment, airspace between described negative selenodont lens A-1 (1) and negative selenodont lens A-2 (2) is 1.88mm, airspace between described negative selenodont lens A-2 (2) and biconcave lens A-3 (3) is 3.05mm, and the airspace between described biconcave lens A-3 (3) and biconvex lens A-4 (4) is 0.52mm.
In the present embodiment, between the gummed group that described biconvex lens B-1 (5) and biconvex lens B-2 (6) and negative crescent moon lens B-3 (7) connect airtight, be spaced apart 0.1mm, the airspace between described gummed group and described biconvex lens B-4 (8) is 0.1mm.
The eyeglass of front group of A is selected glass of high refractive index material, bear very large focal power, make the oblique ray of wide-angle, after front group, fast " convergence ', reduce with the slanted angle of optical axis; through after organize B and reflect after; the angle of chief ray and optical axis reduces, and makes camera lens realize good aberration correction, and makes the uniform-illumination of image planes.
Select the optical glass material of high refraction, low dispersion, various aberrations and the distortion of having proofreaied and correct optical lens by computer optics Computer Aided Design and optimization, make camera lens realize full visual field, high resolving power, more meet the requirement of large space of a whole page high definition video shooting, be applicable to the shooting of panorama machine.
In the present embodiment, the optical system being made up of above-mentioned lens set has reached following optical index:
(1) focal length: f '=1.57m;
(2) relative aperture F=2.2;
(3) target surface: 1/4 ";
(4) field angle: 2w >=180 ° (image space is as visual field 2 η ' >=Ф 8mm);
(5) resolution: can be adaptive with 8,000,000 pixel high-resolution CCD or cmos camera;
(6) light path overall length ∑≤30mm, optics rear cut-off distance l ' >=6mm;
(7) be suitable for spectral line scope: 400nm～850nm.
In the time of optical design, the wide spectral range of 400～850nm is carried out to aberration correction and balance, make camera lens all there is good picture element at wide spectral range, realize wide spectrum confocal.Like this camera lens can not only photoenvironment in the daytime under blur-free imaging, under night utmost point low-light (level) environment, by infrared light filling, also can blur-free imaging.As Fig. 3 illustrates the MTF curve on daytime that computer-aided software engineering provides, Fig. 4 illustrates the night vision MTF curve that computer-aided software engineering provides.
As shown in Figure 2, in the present embodiment, described camera lens physical construction comprises body tube 15, and A is organized before lens set is installed in described body tube 15 inner chamber front portions, and body tube 15 inner chamber rear portions are provided with rear group of B.
In the present embodiment, the front end of described body tube 15 is provided with the front trim ring (9) that can block described negative selenodont lens A-1 (1) peripheral part, to ensure being mounted with property, the stability of whole eyeglasses.In the seat hole of body tube 15 rear ends, be provided with convex shoulder (16) to block the peripheral part of described biconvex lens B-4 (8), between described negative selenodont lens A-2 (2) and biconcave lens A-3 (3), be folded with spacer ring BC (10), between described biconcave lens A-3 (3) and biconvex lens A-4 (4), be folded with spacer ring CD (11), between described front group of A and described rear group of B, be folded with spacer ring DE (12), light enters rear group of B by the light hole at described spacer ring DE middle part, play the effect of aperture, ensure the airspace between front group of A and rear group of B simultaneously.
Between the gummed group that described biconvex lens B-1 (5) and biconvex lens B-2 (6) and negative crescent moon lens B-3 (7) connect airtight, be folded with spacer ring FG (13), between described gummed group and described biconvex lens B-4 (8), be folded with spacer ring GH (14), each spacer ring can ensure the clearance between each eyeglass.
In the time of structural design, both ensured camera lens concentricity, precision and axial location accurately, make again structural design compactness small and exquisite (overall dimensions Ф 21mm x 24mm), can be applicable to the occasion that structure is compacter, such as small-sized ball machine etc., its applicable surface is wider.
Body tube 15 is clamped one time machine-shaping, can well ensure the positional precision of body tube 15, and to there is accurate verticality to ensure the accuracy of eyeglass assembling adding the plane of wanting man-hour the spacer ring of strict guarantee eyeglass airspace to contact with eyeglass, body tube endoporus internal diameter size is carried out to strict size Control, it is coordinated with eyeglass and closely reach the right alignment of eyeglass installation requirement and the consistance of lens light axis, and ensure the airspace between each eyeglass by the accurate processing to spacer ring.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is 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 of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. the one kind little super wide-angle fish eye lens of target surface high resolving power, it is characterized in that: in the optical system of described camera lens along light from left to right incident direction before being provided with successively lens set, organize A and rear group of B, between described front group of A and rear group of B, be provided with light hurdle C, described front group of A comprises the negative selenodont lens A-1 setting gradually from left to right, negative selenodont lens A-2, biconcave lens A-3 and biconvex lens A-4; Described rear group of B comprises the biconvex lens B-1 setting gradually from left to right, gummed group and biconvex lens B-4 that biconvex lens B-2 and negative crescent moon lens B-3 connect airtight.
2. the super wide-angle fish eye lens of little target surface high resolving power according to claim 1, it is characterized in that: the airspace between described front group of A and rear group of B is 4.25mm, airspace wherein between group A and light hurdle C is 2.33mm, and the airspace between light hurdle C and rear group of B is 1.92mm.
3. the super wide-angle fish eye lens of little target surface high resolving power according to claim 1, is characterized in that: on the convex surface of described negative selenodont lens A-1, be coated with Buddha's warrior attendant film.
4. the super wide-angle fish eye lens of little target surface high resolving power according to claim 1, it is characterized in that: the airspace between described negative selenodont lens A-1 and negative selenodont lens A-2 is 1.88mm, airspace between described negative selenodont lens A-2 and biconcave lens A-3 is 3.05mm, and the airspace between described biconcave lens A-3 and biconvex lens A-4 is 0.52mm.
5. the super wide-angle fish eye lens of little target surface high resolving power according to claim 1, it is characterized in that: between the gummed group that described biconvex lens B-1 and biconvex lens B-2 and negative crescent moon lens B-3 connect airtight, be spaced apart 0.1mm, the airspace between described gummed group and described biconvex lens B-4 is 0.1mm.
6. the super wide-angle fish eye lens of little target surface high resolving power according to claim 1, is characterized in that: described camera lens physical construction comprises body tube, and A is organized before lens set is installed in described body tube inner chamber front portion, and body tube inner chamber rear portion is provided with rear group of B.
7. the super wide-angle fish eye lens of little target surface high resolving power according to claim 6, it is characterized in that: the front end of described body tube is provided with the front trim ring that can block described negative selenodont lens A-1 peripheral part, between described negative selenodont lens A-2 and biconcave lens A-3, be folded with spacer ring BC, between described biconcave lens A-3 and biconvex lens A-4, be folded with spacer ring CD, between described front group of A and described rear group of B, be folded with spacer ring DE, between the gummed group that described biconvex lens B-1 and biconvex lens B-2 and negative crescent moon lens B-3 connect airtight, be folded with spacer ring FG, between described gummed group and described biconvex lens B-4, be folded with spacer ring GH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100258.4U CN203759343U (en) | 2014-03-07 | 2014-03-07 | Small-target-surface high-resolution ultra-wide-angle fish-eye lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100258.4U CN203759343U (en) | 2014-03-07 | 2014-03-07 | Small-target-surface high-resolution ultra-wide-angle fish-eye lens |
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| Publication Number | Publication Date |
|---|---|
| CN203759343U true CN203759343U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420100258.4U Expired - Fee Related CN203759343U (en) | 2014-03-07 | 2014-03-07 | Small-target-surface high-resolution ultra-wide-angle fish-eye lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823291A (en) * | 2014-03-07 | 2014-05-28 | 福建福光数码科技有限公司 | Small-target-surface high-resolution ultra-wide field fish-eye lens |
| CN110581937A (en) * | 2019-08-01 | 2019-12-17 | 珠海格力电器股份有限公司 | Camera and mobile device |
-
2014
- 2014-03-07 CN CN201420100258.4U patent/CN203759343U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823291A (en) * | 2014-03-07 | 2014-05-28 | 福建福光数码科技有限公司 | Small-target-surface high-resolution ultra-wide field fish-eye lens |
| CN103823291B (en) * | 2014-03-07 | 2015-10-28 | 福建福光股份有限公司 | Little target surface high resolving power ultra-wide angle fish eye lens |
| CN110581937A (en) * | 2019-08-01 | 2019-12-17 | 珠海格力电器股份有限公司 | Camera and mobile device |
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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: 20140806 Termination date: 20160307 |