CN205809398U - A kind of large aperture long wave double-view field infrared optical lens - Google Patents
A kind of large aperture long wave double-view field infrared optical lens Download PDFInfo
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- CN205809398U CN205809398U CN201620521779.6U CN201620521779U CN205809398U CN 205809398 U CN205809398 U CN 205809398U CN 201620521779 U CN201620521779 U CN 201620521779U CN 205809398 U CN205809398 U CN 205809398U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 230000000007 visual effect Effects 0.000 claims abstract description 19
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 16
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000009738 saturating Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000000571 coke Substances 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of large aperture long wave double-view field infrared optical lens, described lens optical system is sequentially provided with from thing lateral image side incident direction along light before there is positive light coke and fixes group, for a piece of falcate germanium plus lens convex surface facing thing side；There is the zoom group of negative power, for a piece of concave concave germanium minus lens, be used for switching visual field；Group is fixed, for a piece of lenticular germanium plus lens after there is the first of positive light coke；Fix group after there is the second of positive light coke, form for a piece of falcate germanium plus lens convex surface facing image space.This optical system can in two visual fields of 50/150mm in image quality good, and be capable of focal length and be switched fast.
Description
Technical field
This utility model relates to optical technical field, particularly relates to a kind of large aperture long wave double-view field infrared optical lens.
Background technology
Infrared technique is applicable to the detection under night and cigarette, mist, dirt bad-weather condition to target, it is achieved round-the-clock sight
Examine.
Double-view field infrared optical lens has two visual fields wide, narrow, it is possible to meet detection and the function identified respectively.Width regards
Field is for the detection of target, and narrow visual field is for the identification of target.
When weather is more severe, it is desirable to have more energy enters optical system and is detected, thus increases
Image contrast.For optical principle, Ai Liban diameter diminishes along with the increase of aperture, also implies that resolution is more
High.It is thus desirable to the camera lens of large aperture.
Summary of the invention
This utility model provides a kind of large aperture long wave double-view field infrared optical lens, solves the problems referred to above, its skill
Art scheme is as described below:
A kind of LONG WAVE INFRARED double-view field infrared optical lens, fixing group before including the most successively, zoom group, the
Fix group after one, fix group after second；
Before described, fixing group, has positive diopter, converges light, including a piece of falcate germanium convex surface facing thing side
Plus lens；
Described zoom group, has negative diopter, for the switching of focal length, including a piece of double concave germanium minus lens；Described change
Group second uses diffraction surfaces again；
Fix group after described first, there is positive diopter, including a piece of lenticular germanium plus lens；
Fix group after described second, there is positive diopter, including a piece of falcate germanium plus lens convex surface facing image space.
After described first, fixing group first uses high order aspheric surface.
After described second, fixing group first uses high order aspheric surface.
The service band of described LONG WAVE INFRARED double-view field infrared optical lens is 8～12um.
Described LONG WAVE INFRARED double-view field infrared optical lens F number=1 when focal length, F number=0.9 during short Jiao.
Wherein, F/# refers to the diameter of camera lens and the ratio of focal length, is optics technical term, does not has unit.
This optical system adaptation detector resolution 640 × 480, Pixel size 17 μm.
This optical system can in two visual fields of 50/150mm in image quality good, and be capable of focal length and quickly cut
Change.
Accompanying drawing explanation
Fig. 1 is the narrow visual field of this utility model, long-focus index path；
Fig. 2 is this utility model wide visual field, short focus index path；
Fig. 3 is the narrow visual field of this utility model, long-focus disc of confusion figure；
Fig. 4 is this utility model wide visual field, short focus disc of confusion figure；
Fig. 5 is the narrow visual field of this utility model, long focal length optical transmission functional arrangement, and cut-off resolution is 20llp/mm；
Fig. 6 is this utility model wide visual field, short focus optical delivery functional arrangement, and cut-off resolution is 20llp/mm；
Fig. 7 is the narrow visual field of this utility model, long-focus astigmatism distortion figure；
Fig. 8 is this utility model wide visual field, short focus astigmatism distortion figure；
Wherein, 110-object space, fix group, 111-diaphragm, L2-zoom group before L1-, after L3-first, fix group, L4-
Fixing group, 112-protecting window, 113-detector protecting window, 114-image planes after two, S1～S8 is each surfaces of lens.
Detailed description of the invention
This utility model sets gradually the first bent moon plus lens L1, the second double-concave negative lens L2, the 3rd from the object side to the image side
Biconvex positive lens L3, the 4th bent moon plus lens L4, protecting window 112 and image planes 113, the second minus lens can be saturating first vertically
Move between mirror L1 and the 3rd lens L3, respectively constitute narrow visual field light path and wide visual field light path.
Optical system be in short burnt time, extraneous radiation by first fixing group, zoom group, that rear fixing group converges to detector is burnt
In plane；When optical system is in focal length, extraneous radiation by first fixing group, zoom group, fix after first group, after second fixing
Group converges on detector focal plane.
The large aperture long wave double-view field infrared optical lens that this utility model provides, uses high order aspheric surface and diffraction surfaces to change
Kind system picture element, the light path overall length making system is shorter lighter with weight.Owing to have employed the movement of a piece of lens to realize visual field
Conversion and focusing compensate, decrease the motion in system, reduce resetting difficulty.
And meet following parameter:
Effective focal length EFL=50/150mm of described LONG WAVE INFRARED double-view field optical lens, F number=0.9/1, optical system
Overall length=220mm, adaptive detector resolution 640 × 480, Pixel size 17 μm.
Below in conjunction with accompanying drawing, by embodiment, this utility model is described in further details.
Should be appreciated that specific embodiment described herein is only used for explaining this utility model, be not limited in this practicality
Novel.
Fig. 1, Fig. 2 are respectively this utility model optical system diagram when focal length 150mm and 50mm, the structure of described camera lens
Identical, as explanation as a example by one of them figure.
As it is shown in figure 1, this enforcement is by fixing before positive light coke group L1, zoom group L2 of negative power, positive light coke
Rear fixing group L3, L4 composition.
Front fixing group L1 that is first lens, for the plus lens convex surface facing thing side, material is germanium single crystal, this sheet eyeglass bore
Greatly, aspheric surface is not the most used；
Zoom group L2 that is second lens, are minus lens for double concave, and material is germanium single crystal, and S4 surface is diffraction surfaces.This is saturating
Mirror is mobile eyeglass, serves the effect of zoom and focusing, total shift motion 39.6mm；
Fixing group L3 that is the 3rd lens after first, for lenticular plus lens, material is germanium single crystal, and S5 surface is aspheric
Face；
Fixing group-L4 the i.e. the 4th lens after second, for the falcate plus lens convex surface facing image space, material is germanium single crystal,
S7 surface is aspheric surface.
Light, through detector protecting window 112, is imaged on image planes 113, and resolution is 640x480, Pixel size 17 μ.
In above four lens, the first lens S1 plated surface diamond-like carbon film, because this is surface exposed, need to plate eka-gold
Diamond carbon film carbon film plays protective effect, and anti-reflection film is all plated on remaining S2～S8 surface.
Table 1 is this utility model at focal length 150mm, Optic structure parameter during 50mm:
Table 1
The aspheric surface mentioned in above 4 lens, is even aspheric surface, and its expression formula is as follows:
Wherein z is aspheric surface along optical axis direction when the position that height is r, and away from the distance rise on aspheric surface summit, c represents
The vertex curvature on surface, k is circular cone coefficient, α2、α3、α4、α5、α6For high order aspheric surface coefficient.
Table 2 is the asphericity coefficient of surface S4, S5, S7:
Table 2
The diffraction surfaces mentioned in above 4 lens, its expression formula is as follows:
Φ=A1ρ2+A2ρ4
Wherein Φ is the position phase of diffraction surfaces, ρ=r/rn,rnBeing the planning radius of diffraction surfaces, A1, A2 are the position phase of diffraction surfaces
Coefficient.
Table 3 is the diffraction coefficient of surface S3:
Table 3
| Surface | ||
| S4 | -34.83 | 3.381 |
Last it is noted that above example only in order to this utility model is described and and unrestricted this utility model retouched
The technical scheme stated.Therefore, although this utility model is had been carried out describing in detail by this specification with reference to the above embodiments,
But, it will be understood by those within the art that, still this utility model can be modified or equivalent；And one
Cutting the technical scheme without departing from spirit and scope of the present utility model and improvement thereof, it all should be contained will in right of the present utility model
Ask in the middle of scope.
Claims (6)
1. a LONG WAVE INFRARED double-view field infrared optical lens, it is characterised in that fixing group before including the most successively,
Zoom group, fix group after first, fix group after second；
Before described, fixing group, has positive diopter, converges light, the most saturating including a piece of falcate germanium convex surface facing thing side
Mirror；
Described zoom group, has negative diopter, for the switching of focal length, including a piece of double concave germanium minus lens；Described zoom group
Second uses diffraction surfaces；
Fix group after described first, there is positive diopter, including a piece of lenticular germanium plus lens；
Fix group after described second, there is positive diopter, including a piece of falcate germanium plus lens convex surface facing image space.
LONG WAVE INFRARED double-view field infrared optical lens the most according to claim 1, it is characterised in that fixing after described first
Organize first and use high order aspheric surface.
LONG WAVE INFRARED double-view field infrared optical lens the most according to claim 1, it is characterised in that fixing after described second
Organize first and use high order aspheric surface.
LONG WAVE INFRARED double-view field infrared optical lens the most according to claim 1, it is characterised in that described LONG WAVE INFRARED is double
The service band of visual field infrared optical lens is 8～12um.
LONG WAVE INFRARED double-view field infrared optical lens the most according to claim 1, it is characterised in that described LONG WAVE INFRARED is double
Visual field infrared optical lens is F number=1 when focal length, F number=0.9 during short Jiao.
LONG WAVE INFRARED double-view field infrared optical lens the most according to claim 1, it is characterised in that described LONG WAVE INFRARED is double
Visual field infrared optical lens adaptation detector resolution 640 × 480, Pixel size 17 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620521779.6U CN205809398U (en) | 2016-06-01 | 2016-06-01 | A kind of large aperture long wave double-view field infrared optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620521779.6U CN205809398U (en) | 2016-06-01 | 2016-06-01 | A kind of large aperture long wave double-view field infrared optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809398U true CN205809398U (en) | 2016-12-14 |
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ID=57501189
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|---|---|---|---|
| CN201620521779.6U Active CN205809398U (en) | 2016-06-01 | 2016-06-01 | A kind of large aperture long wave double-view field infrared optical lens |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107229108A (en) * | 2017-07-10 | 2017-10-03 | 北京伊神华虹系统工程技术有限公司 | A kind of passive infrared and active infrared overall view monitoring linked system and method |
| CN108152935A (en) * | 2018-01-12 | 2018-06-12 | 中国科学院长春光学精密机械与物理研究所 | Long wave infrared imaging optical system |
| CN108828750A (en) * | 2018-09-05 | 2018-11-16 | 西安泰豪红外科技有限公司 | A kind of infrared lens of heavy caliber ultrahigh resolution |
| CN111090169A (en) * | 2020-01-14 | 2020-05-01 | 西安深瞳智控技术有限公司 | Simple airborne long-wave double-view-field two-gear zooming infrared optical system |
| CN113933955A (en) * | 2021-11-23 | 2022-01-14 | 浙江大立科技股份有限公司 | Long-wave infrared lens adaptive to high-definition assembly |
-
2016
- 2016-06-01 CN CN201620521779.6U patent/CN205809398U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107229108A (en) * | 2017-07-10 | 2017-10-03 | 北京伊神华虹系统工程技术有限公司 | A kind of passive infrared and active infrared overall view monitoring linked system and method |
| CN107229108B (en) * | 2017-07-10 | 2023-05-02 | 北京伊神华虹系统工程技术有限公司 | Passive infrared and active infrared panoramic monitoring linkage system and method |
| CN108152935A (en) * | 2018-01-12 | 2018-06-12 | 中国科学院长春光学精密机械与物理研究所 | Long wave infrared imaging optical system |
| CN108152935B (en) * | 2018-01-12 | 2020-09-01 | 中国科学院长春光学精密机械与物理研究所 | Long-wave infrared imaging optical system |
| CN108828750A (en) * | 2018-09-05 | 2018-11-16 | 西安泰豪红外科技有限公司 | A kind of infrared lens of heavy caliber ultrahigh resolution |
| CN108828750B (en) * | 2018-09-05 | 2023-07-04 | 西安中科立德红外科技有限公司 | Large-caliber ultra-high resolution infrared lens |
| CN111090169A (en) * | 2020-01-14 | 2020-05-01 | 西安深瞳智控技术有限公司 | Simple airborne long-wave double-view-field two-gear zooming infrared optical system |
| CN113933955A (en) * | 2021-11-23 | 2022-01-14 | 浙江大立科技股份有限公司 | Long-wave infrared lens adaptive to high-definition assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210226 Address after: 065200 l03-g workshop in Baishi Jingu Yanjiao international industrial base, west of Yingbin North Road and north of Gushan West Road, Yanjiao Development Zone, Sanhe City, Langfang City, Hebei Province Patentee after: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 100016 courtyard 160, East Bajianfang village, Jiangtai Township, Chaoyang District, Beijing Patentee before: BEIJING LENSTECH SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 065200 l03-g workshop in Baishi Jingu Yanjiao international industrial base, west of Yingbin North Road and north of Gushan West Road, Yanjiao Development Zone, Sanhe City, Langfang City, Hebei Province Patentee after: Hebei Lansitek Optoelectronic Technology Co.,Ltd. Address before: 065200 l03-g workshop in Baishi Jingu Yanjiao international industrial base, west of Yingbin North Road and north of Gushan West Road, Yanjiao Development Zone, Sanhe City, Langfang City, Hebei Province Patentee before: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY CO.,LTD. |