CN203422518U - Large-format 5-megapixel miniature camera lens - Google Patents
Large-format 5-megapixel miniature camera lens Download PDFInfo
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- CN203422518U CN203422518U CN201320498164.2U CN201320498164U CN203422518U CN 203422518 U CN203422518 U CN 203422518U CN 201320498164 U CN201320498164 U CN 201320498164U CN 203422518 U CN203422518 U CN 203422518U
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Abstract
The utility model relates to a large-format 5-megapixel miniature camera lens. In an optical system of the lens, a front set A with negative focal power, a diaphragm C and a rear set B with positive focal power are arranged in an incident direction of light from left to right. The front set A includes, in sequence, a negative meniscus lens A-1, a double-concave lens A-2, a first cementing unit formed by a positive meniscus lens A-3 and a double-concave lens A-4 which are in close connection, and a double-convex lens A-5. The rear set B includes, in sequence, a second cementing unit formed by a planoconvex lens B-1 and a positive meniscus lens B-2 which are in close connection, a double-convex lens B-3, and a third cementing unit formed by a double-convex lens B-4 and a positive meniscus lens B-5 which are in close connection. The lens provided by the utility model has the advantages of ultra-wide angle, high power, high resolution and wide spectrum confocal properties, and is capable of providing full-frame clear images beyond 5-megapixel for a high-resolution network camera system.
Description
Technical field
The utility model relates to a kind of video camera lens device, and particularly the large target surface micro pick-up lens of a kind of 5,000,000 pixel, belongs to field of photoelectric technology.
Background technology
The TV camera len of ultra wide-angle of existing structure pattern has been applied more than 10 year in video camera field, its performance index are not high, especially aspect image definition, it can only be adaptive with SD CCD or the cmos camera of 20 ~ 300,000 pixels, and the spectral range adapting to is narrow, used under illumination condition the daytime that is confined to 480nm ~ 650nm.
Along with the continuous appearance of 1,000,000 grades of pixel high-resolution CCD, cmos image sensor, photo electric video frequency monitoring has stepped into network times; The performance of video camera system by the past to external world pure " the watching " of scenery to " identification and cognitive " now; From can only shine the 24 hours continual continuous monitorings that monitor condition to daylight in the past; And defocusing not when day and night switching, focuses without scene.For adapting to above-mentioned development trend, lifting image information collecting instrument---the performance of pick-up lens is vital.
Utility model content
In order to overcome the defect of existing wide-angle camera, realizing above-mentioned target is the purpose of this utility model, and the technical problems to be solved in the utility model is to provide the large target surface micro pick-up lens of a kind of 5,000,000 pixel.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: the large target surface micro pick-up lens of a kind of 5,000,000 pixel, in the optical system of described camera lens along light from left to right incident direction be respectively equipped with focal power for front group of negative A, diaphragm C and focal power are rear group of positive B, described front group of A is provided with negative crescent moon lens A-1 successively, biconcave lens A-2, the the first gummed group and the biconvex lens A-5 that by positive crescent moon lens A-3 and biconcave lens A-4, are connected airtight, described rear group of B is provided with the second gummed group of being connected airtight by plano-convex lens B-1 and positive crescent moon lens B-2 successively, biconvex lens B-3 and the 3rd gummed group of being connected airtight by biconvex lens B-4 and positive crescent moon lens B-5.
In further technical scheme, the airspace between described front group of A and rear group of B is 2.430mm.
In further technical scheme, negative crescent moon lens A-1 in described front group of A and the airspace between biconcave lens A-2 are 3.625mm, airspace between described biconcave lens A-2 and the first gummed group is 1.039mm, and the airspace between described the first gummed group and biconvex lens A-5 is 0.480mm.
In further technical scheme, the airspace between described biconvex lens A-5 and diaphragm C is 2.000mm, and the airspace between described diaphragm C and the second gummed group is 0.430mm.
In further technical scheme, the second gummed group in described rear group of B and the airspace between biconvex lens B-3 are 2.443mm, and the airspace between described biconvex lens B-3 and the 3rd gummed group is 0.106mm.
Compared with prior art, the utlity model has following beneficial effect: (1) organizes the focal power of A and rear group of B in the optical texture of retrofocus type before reasonable distribution; In rear group of B, the 3rd lens of three-chip type Ke Ke type structure are changed into cemented doublet group, make camera lens reach object lens of large relative aperture, super wide-angle, the short performance index of structure length.(2) by the optical glass material of forward and backward two groups ten seven groups of reasonable selections, select the optical glass material of high index of refraction, low dispersion as far as possible; By area of computer aided optical design and optimization, proofreaied and correct the various aberrations of optical lens perfectly, make the resolution of camera lens high, can adapt to the requirement of 5,000,000 pixel high definition video shootings.(3) when optical design, the wide spectral range of 480nm ~ 850nm is carried out to aberration correction and balance, make camera lens have good picture element at wide spectral range, realized wide spectrum confocal; This camera lens can not only photoenvironment in the daytime under blur-free imaging, also can blur-free imaging by infrared light filling under the environment of night utmost point low-light (level) or zero illumination, realized 24 hours continuous monitorings, and when day and night switching defocusing not, without scene, focus.(4) when Design of Mechanical Structure, adopt the mode of two assembling, both guaranteed camera lens concentricity, precision and axial location accurately, make again the compact conformation of camera lens as far as possible; In order to eliminate the parasitic light of camera lens, at the inwall of the 3rd spacer ring, done delustring line, thereby eliminated halation problem simultaneously.
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 schematic diagram of the utility model embodiment.
Fig. 2 is the physical construction schematic diagram of the utility model embodiment.
In figure: 1-bears crescent moon lens A-1,2-O-ring seal, 3-body tube, 4-biconcave lens A-2,5-the first gummed group, 6-biconvex lens A-5,7-the second gummed group, 8-biconvex lens B-3,9-the 3rd gummed group, trim ring after 10-, 11-the 3rd spacer ring, 12-the second spacer ring, 13-the first spacer ring, trim ring before 14-; Group before A-, A-1-bears crescent moon lens, A-2-biconcave lens, the positive crescent moon lens of A-3-, A-4-biconcave lens, A-5-biconvex lens, group after B-, B-1-plano-convex lens, the positive crescent moon lens of B-2-, B-3-biconvex lens, B-4-biconvex lens, the positive crescent moon lens of B-5-, C-diaphragm.
Embodiment
As shown in Figure 1, the large target surface micro pick-up lens of a kind of 5,000,000 pixel, the light path of described camera lens is the optical texture of retrofocus type, in its optical system along light from left to right incident direction be respectively equipped with focal power for front group of negative A, diaphragm C and focal power are rear group of positive B, described front group of A is provided with negative crescent moon lens A-1 successively, biconcave lens A-2, the the first gummed group and the biconvex lens A-5 that by positive crescent moon lens A-3 and biconcave lens A-4, are connected airtight, described rear group of B is provided with the second gummed group of being connected airtight by plano-convex lens B-1 and positive crescent moon lens B-2 successively, biconvex lens B-3 and the 3rd gummed group of being connected airtight by biconvex lens B-4 and positive crescent moon lens B-5.
In the present embodiment, described the second gummed group and the 3rd is glued together the focal power that component has been carried on a shoulder pole rear group of B, has improved the relative aperture of camera lens, utilizes gummed to organize aberration and the wide spectrum aberration of the refractive index of positive and negative eyeglass and the difference correction camera lens of dispersion.In addition, described negative crescent moon lens A-1 convex surface is coated with Buddha's warrior attendant film, has good scratch resistant effect.In order to improve optical property, all eyeglasses of this camera lens all adopt the optical material of high refraction, low dispersion, such as H-FK61 optical material etc.This camera lens has super wide-angle, high light power, high resolving power, the confocal performance of wide spectrum, can be high definition network system the full interface picture rich in detail that is better than 5,000,000 pixels is provided.
In the present embodiment, the airspace between described front group of A and rear group of B is 2.430mm; Negative crescent moon lens A-1 in described front group of A and the airspace between biconcave lens A-2 are 3.625mm, airspace between described biconcave lens A-2 and the first gummed group is 1.039mm, and the airspace between described the first gummed group and biconvex lens A-5 is 0.480mm; Airspace between described biconvex lens A-5 and diaphragm C is 2.000mm, and the airspace between described diaphragm C and the second gummed group is 0.430mm; The second gummed group in described rear group of B and the airspace between biconvex lens B-3 are 2.443mm, and the airspace between described biconvex lens B-3 and the 3rd gummed group is 0.106mm.
In the present embodiment, the optical system consisting of above-mentioned lens set has reached following optical index: (1) focal length: f '=3.2mm; (2) relative aperture D/F=1/2.2; (3) field angle: 2 ω=116 °; (4) applicable spectral range: 480nm ~ 850nm; (5) resolution: adaptive with the high-definition camera of 5,000,000 pixels; (6) light path overall length ∑≤39.15mm.
Because the resolution of this camera lens is very high, and the resolution of visual field, edge and central market do not allow to make a big difference, thus in Design of Mechanical Structure, to guarantee the actions such as the concentricity of each constituent element of system and focusing accurately, steadily and good hand touch.
As shown in Figure 2, physical construction of the present utility model comprises body tube 3, by the negative crescent moon lens A-1 of ten seven groups of formulas, biconcave lens A-2, the first gummed group of being connected airtight by positive crescent moon lens A-3 and biconcave lens A-4, biconvex lens A-5, the second gummed group of being connected airtight by plano-convex lens B-1 and positive crescent moon lens B-2, biconvex lens B-3, the 3rd gummed group of being connected airtight by biconvex lens B-4 and positive crescent moon lens B-5 is positioned in body tube 3, because body tube 3 is produced on same board, guaranteed the right alignment of whole light path, and two groups of assemblings before and after eyeglass is divided into, guarantee the consistance of optical axis, the second gummed group of being connected airtight by plano-convex lens B-1 and positive crescent moon lens B-2, biconvex lens B-3, the 3rd gummed group of being connected airtight by biconvex lens B-4 and positive crescent moon lens B-5 are rear group assembles, and after assembling, by rear trim ring 10, is anchored in body tube 3, negative crescent moon lens A-1, biconcave lens A-2, the first gummed group, the biconvex lens A-5 that by positive crescent moon lens A-3 and biconcave lens A-4, are connected airtight are front group and assemble, fastening by front trim ring 14 after assembling, make the off-axis aberration of optical lens reach designing requirement.
For fixing len and guarantee the airspace between each eyeglass, trim ring and spacer ring have been designed respectively: the first spacer ring 13 is set between the first gummed group and biconvex lens A-5 and guarantees airspace, between biconvex lens A-5 and the second gummed group, the second spacer ring 12 is set and guarantees airspace, between biconvex lens B-3 and the 3rd gummed group, the 3rd spacer ring 11 is set and guarantees airspace; Those spacer rings are made into step, have both saved material, can play better again the effect of interception parasitic light.In order to guarantee the impermeability of whole camera lens, at thick groove of 0.5mm of front end face car of body tube 3, fill O-ring seal 2, make shell protection grade reach IP66, dustproof, impermeability is high.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. the large target surface micro pick-up lens of pixel, it is characterized in that: in the optical system of described camera lens along light from left to right incident direction be respectively equipped with focal power for front group of negative A, diaphragm C and focal power are rear group of positive B, described front group of A is provided with negative crescent moon lens A-1 successively, biconcave lens A-2, the the first gummed group and the biconvex lens A-5 that by positive crescent moon lens A-3 and biconcave lens A-4, are connected airtight, described rear group of B is provided with the second gummed group of being connected airtight by plano-convex lens B-1 and positive crescent moon lens B-2 successively, biconvex lens B-3 and the 3rd gummed group of being connected airtight by biconvex lens B-4 and positive crescent moon lens B-5.
2. the large target surface micro pick-up lens of 5,000,000 pixel according to claim 1, is characterized in that: the airspace between described front group of A and rear group of B is 2.430mm.
3. the large target surface micro pick-up lens of 5,000,000 pixel according to claim 1 and 2, it is characterized in that: the negative crescent moon lens A-1 in described front group of A and the airspace between biconcave lens A-2 are 3.625mm, airspace between described biconcave lens A-2 and the first gummed group is 1.039mm, and the airspace between described the first gummed group and biconvex lens A-5 is 0.480mm.
4. the large target surface micro pick-up lens of 5,000,000 pixel according to claim 1 and 2, is characterized in that: the airspace between described biconvex lens A-5 and diaphragm C is 2.000mm, and the airspace between described diaphragm C and the second gummed group is 0.430mm.
5. the large target surface micro pick-up lens of 5,000,000 pixel according to claim 1 and 2, it is characterized in that: the second gummed group in described rear group of B and the airspace between biconvex lens B-3 are 2.443mm, and the airspace between described biconvex lens B-3 and the 3rd gummed group is 0.106mm.
6. the large target surface micro pick-up lens of 5,000,000 pixel according to claim 1, it is characterized in that: described front group of A is installed in the front end of body tube and compressed by front trim ring, described rear group of B is installed in the rear end of body tube and compressed by rear trim ring, the front end face of described body tube is provided with groove, in described groove, O-ring seal is installed, between described the first gummed group and biconvex lens A-5, be provided with the first spacer ring, between described biconvex lens A-5 and the second gummed group, be provided with the second spacer ring, between described biconvex lens B-3 and the 3rd gummed group, be provided with the 3rd spacer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498164.2U CN203422518U (en) | 2013-08-15 | 2013-08-15 | Large-format 5-megapixel miniature camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498164.2U CN203422518U (en) | 2013-08-15 | 2013-08-15 | Large-format 5-megapixel miniature camera lens |
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| Publication Number | Publication Date |
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| CN203422518U true CN203422518U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498164.2U Expired - Fee Related CN203422518U (en) | 2013-08-15 | 2013-08-15 | Large-format 5-megapixel miniature camera lens |
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| CN (1) | CN203422518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389562A (en) * | 2013-08-15 | 2013-11-13 | 福建福光数码科技有限公司 | 5 mega-pixel micro camera lens with large target surface |
-
2013
- 2013-08-15 CN CN201320498164.2U patent/CN203422518U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389562A (en) * | 2013-08-15 | 2013-11-13 | 福建福光数码科技有限公司 | 5 mega-pixel micro camera lens with large target surface |
| CN103389562B (en) * | 2013-08-15 | 2015-05-27 | 福建福光数码科技有限公司 | 5 mega-pixel micro camera lens with large target surface |
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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 |
Granted publication date: 20140205 Termination date: 20150815 |
|
| EXPY | Termination of patent right or utility model |