CN104656227A - Day and night prime lens with high resolution and low distortion - Google Patents
Day and night prime lens with high resolution and low distortion Download PDFInfo
- Publication number
- CN104656227A CN104656227A CN201510089092.XA CN201510089092A CN104656227A CN 104656227 A CN104656227 A CN 104656227A CN 201510089092 A CN201510089092 A CN 201510089092A CN 104656227 A CN104656227 A CN 104656227A
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- lens
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- negative selenodont
- day
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- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims description 18
- 230000004304 visual acuity Effects 0.000 claims description 15
- 238000003384 imaging method Methods 0.000 abstract description 7
- 238000004026 adhesive bonding Methods 0.000 abstract 2
- 230000009469 supplementation Effects 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 230000004075 alteration Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
Abstract
The invention relates to a day and night prime lens with high resolution and low distortion. An optical system of the prime lens is sequentially provided with a front group A, a diaphragm C and a rear group in the light incident direction, the focal power of the front group A is negative, the focal power of the rear group is positive, the front group A is sequentially provided with a negative crescent type lens A-1, a negative crescent type lens A-2, a double-concave lens A-3 and a first gluing group tightly connected through a negative crescent type lens A-4 and a negative crescent type lens A-5, and the rear group B is sequentially provided with a double-concave lens B-1, a second gluing group tightly connected through a negative crescent type lens B-2 and a negative crescent type lens B-3 as well as a double-convex lens B-4. The lens has the advantages of high resolution, large relative aperture, day and night co-focus, low distortion and the like, and clear imaging can be obtained in the day light environment and can also be obtained in the low-illuminance environment at night through infrared light supplementation.
Description
Technical field
The present invention 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.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention 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, technical scheme of the present invention 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 present invention 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 present invention is further detailed explanation.
Accompanying drawing explanation
Fig. 1 is the optical system diagram of the embodiment of the present invention.
Fig. 2 is the mechanical construction drawing of the embodiment of the present invention.
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.Invention increases the requirement of people to video camera, 5,000,000 pixels, high definition and the requirement of low distortion video camera can be adapted to.
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 (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. the economic money micro-lens of high resolution day and night according to claim 6, is characterized in that: described first spacer ring and the second spacer ring all adopt staged spacer ring, described staged spacer ring endoporus is provided with delustring line.
8. the economic money micro-lens of high resolution day and night according to claim 6, 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 |
|---|---|---|---|
| CN201510089092.XA CN104656227B (en) | 2015-02-27 | 2015-02-27 | High-resolution, low distortion day and night tight shot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510089092.XA CN104656227B (en) | 2015-02-27 | 2015-02-27 | High-resolution, low distortion day and night tight shot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104656227A true CN104656227A (en) | 2015-05-27 |
| CN104656227B CN104656227B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510089092.XA Active CN104656227B (en) | 2015-02-27 | 2015-02-27 | High-resolution, low distortion day and night tight shot |
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| CN (1) | CN104656227B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443975A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | Optical industrial lens with high resolution and low distortion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403816A (en) * | 2008-11-07 | 2009-04-08 | 秦皇岛视听机械研究所 | 240 degree field angle ultra-large pore diameter fish-eye lens base structure |
| US20120268834A1 (en) * | 2011-04-22 | 2012-10-25 | Pentax Ricoh Imaging Company, Ltd. | Photographing lens system |
| CN204556943U (en) * | 2015-02-27 | 2015-08-12 | 福建福光数码科技有限公司 | High resolving power, low distortion day and night tight shot |
-
2015
- 2015-02-27 CN CN201510089092.XA patent/CN104656227B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403816A (en) * | 2008-11-07 | 2009-04-08 | 秦皇岛视听机械研究所 | 240 degree field angle ultra-large pore diameter fish-eye lens base structure |
| US20120268834A1 (en) * | 2011-04-22 | 2012-10-25 | Pentax Ricoh Imaging Company, Ltd. | Photographing lens system |
| CN204556943U (en) * | 2015-02-27 | 2015-08-12 | 福建福光数码科技有限公司 | High resolving power, low distortion day and night tight shot |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443975A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | Optical industrial lens with high resolution and low distortion |
| CN106443975B (en) * | 2016-12-16 | 2019-01-04 | 福建福光天瞳光学有限公司 | A kind of low distorted optical industrial lens of high-resolution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104656227B (en) | 2017-03-08 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
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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Free format text: CORRECT: APPLICANT; FROM: FUJIAN FORECAM DIGITAL TECHNOLOGY CO., LTD. TO: FUJIAN FORECAM CO., LTD. |
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