CN103744183A - Infrared broadband multi-interference compound optical system - Google Patents
Infrared broadband multi-interference compound optical system Download PDFInfo
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- CN103744183A CN103744183A CN201410033117.XA CN201410033117A CN103744183A CN 103744183 A CN103744183 A CN 103744183A CN 201410033117 A CN201410033117 A CN 201410033117A CN 103744183 A CN103744183 A CN 103744183A
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Abstract
The invention relates to an infrared broadband multi-interference compound optical system, which belongs to the technical field of infrared and analog simulation. The system comprises an interference optical system formed by a scene generator and an interference collimation optical system, a recombination optical system, a beam expanding element, a beam expanding collimation optical system and a plane mirror, wherein the interference optical system is divided into four paths which are located in the same plane vertical to a principal plane direction and are distributed along a cross direction; infrared radiation generated by the scene generator is collimated through the interference collimation optical system so as to be reflected through the plane mirror, then is recombined through the recombination optical system so as to enter into the beam expanding element, and is incident onto a subsequent coupling mirror through the beam expanding collimation optical system after being subjected to beam expansion; the coupling mirror couples a target optical path and an interference optical path; the coupled optical path is subjected to beam expansion through an objective lens and an ocular lens of a main projection optical system so as to be imaged infinitely, and is matched with an optical system to be tested. The system has the obvious advantages of high coupling efficiency, small size, higher cost performance, and easiness in processing and adjusting.
Description
Technical field
The invention belongs to infrared and imitation technology field, relate to a kind of infrared broadband and disturb complex optics more, it is applicable to measure the optical system of infrared shortwave and the dynamic object recognition of medium wave imaging system and the infrared interference simulation of tracking power.
Background technology
Along with the development of infrared imagery technique, infrared sensing receiving device, as infrared remote sensing, infrared seeker, tracking, and thermal imaging system etc. has become the most important thing of various countries' military developments.According to national military requirement, modern infrared imaging system becomes increasingly complex, precision, so cost of manufacture also increases thereupon, this makes the funds spending of battlefield plan-validation that it is carried out and flight test increasing, and the useful information that each test is obtained is also very limited.
Infrared semi-true object emulation technology can be effective to the performance evaluation of infrared imaging system, and it can also reduce outfield flight test in a large number in addition, the spending of saving funds and shortening weapon development cycle.Therefore, semi-true object emulation technology is significant in the development process of infrared imaging system.At present in the analog simulation of infrared background, need often not only one of the target of simulation, the image of target is by independently optical system generation, this causes whole target simulation system architecture complexity, even can be because the restriction of structure cannot realize the function of wanting, therefore need one to disturb complex optics to be compound to together.
For broadband, disturb complex optics more, the performance of beam-expanding element directly affects the simulation performance of this device, domestic application has reticulate pattern mirror beam expanding technology (having another name called micro-hole mirror beam expanding technology) and infrared biography as optical cable beam expanding technology in many interference light pencil beam expanding technology at present, and two kinds of beam expanding technologies all exist certain limitation in the use.Reticulate pattern mirror beam expanding technology is generally expanded the restriction of spot size, micro-hole manufacture craft, and the system, coupled efficiency of the method is lower, and physical dimension is large, volume is large, and weight is large; And infrared biography is subject to the restriction of fiber optic materials and fiber optic cable production technology as optical cable beam expanding technology, pass the spectral range relative narrower as optical cable, the biography of bigger numerical aperture is difficult to obtain as optical cable in addition.
Broadband is disturbed complex optics more, the overriding challenge that affects its image quality is the spectral information of different-waveband to image on same focal plane, and because this point of reason of aberration is difficult to accomplish, it is very limited that another one significant challenge is to transmit the infra-red material of broadband information, and some material price is extremely expensive.These are all restricting the development of infrared broadband target simulator optical system.The universal method of this type of optical system of design is to select at least three kinds of different infra-red materials to match at present, guarantees image quality on some lens surface by aspheric surface simultaneously.Consider the costliness of material and the difficulty of aspherical mirror machining, this increases development cost greatly.Therefore in the urgent need to a kind of, guaranteeing on the basis of image quality at present, meet cheap, be easy to processing and debug the infrared broadband of requirement and disturb complex optics more.
Summary of the invention
In order to solve current infrared broadband, disturb that complex optics coupling efficiency is low, volume is large more, expensive, be difficult to the shortcoming that processing is debug, it is that the infrared broadband that 2.2 ~ 4.8 μ m, visual field are ± 4 ° is disturbed complex optics more that the present invention proposes a kind of imaging wave band, for testing dynamic object recognition and the tracking power of infrared imaging system.The remarkable advantage of this system is: coupling efficiency is high, and volume is little, and cost performance is very high, and be easy to processing debug.
The object of the invention is to be achieved through the following technical solutions:
A kind of infrared broadband is disturbed complex optics more, comprise interference optical system, complex optics, beam-expanding element, beam-expanding collimation optical system and plane mirror five parts, wherein interference optical system Wei Si road, be positioned at perpendicular to the same plane of paper direction and along " ten " word direction and distribute, described interference optical system is by scene generation device and disturb collimating optical system to form, the infrared radiation that scene generation device sends after disturbing collimating optical system collimation by plane mirror is reflected, after complex optics is compound, pool again coaxial beam and enter beam-expanding element, after expanding, it by beam-expanding collimation optical system, incides on follow-up coupling mirror again, coupling mirror is by target light path and disturb light path to be coupled, after expanding, the object lens of principal view optical system and eyepiece be imaged onto infinity again, mate with tested optical system.
In above-mentioned complex optics, the degree of eccentricity of described interference collimating optical system and complex optics is 35mm.
In above-mentioned complex optics, described scene generation device is positioned on the focal plane of disturbing collimating optical system.
In above-mentioned complex optics, described beam-expanding element is positioned on the focal plane of complex optics and beam-expanding collimation optical system.
In above-mentioned complex optics, described beam-expanding element is microlens array.
In above-mentioned complex optics, remove catoptron, microlens array upper surface is outside plane, other lens surface is standard sphere.
In above-mentioned complex optics, realize Liao Si road and disturb light path to be coupled to together by a composite light path.
Four of the present invention are disturbed light path to be positioned at perpendicular to observing the same plane of paper and distributing along " ten " word direction, they from axle light pencil eccentric throw, be 35mm, make system compact, and adopt microlens array as beam-expanding element, satisfied, expand on the basis of requirement, coupling efficiency is higher.With reticulate pattern mirror and optical fiber array ratio, system bulk is little, lightweight, compact conformation.
Infrared broadband of the present invention disturbs complex optics to have the following advantages more:
1, the lens material of this system only limits to Si and two kinds of crystal of Ge.On meeting compared with the basis of high imaging quality, significantly reduced system manufacturing cost.
2, remove outside parallel flat, all lens surfaces of this system all adopt standard sphere, make system processing, debug and become easily, and then reduced system cost.
3, native system is with microlens array as beam-expanding element, and volume is little, lightweight, compact conformation, and coupling efficiency is high.
4,4 tunnels are disturbed light path be positioned at perpendicular to observing the same plane of paper and distributing along " ten " word direction, make like this system compact reasonable, saved large quantity space.
5, the interference light path of native system have variable go alone disturb, multiple fixedly going alone disturb and multiple much more fixing disturb etc.
Accompanying drawing explanation
Fig. 1 is the vertical view of many interference simulations of the infrared broadband of the present invention optical system;
Fig. 2 is the structural representation of infrared many interference simulations of broadband optical system of the present invention;
Fig. 3 is modulation transfer function (MTF) schematic diagram of infrared many interference simulations of broadband optical system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described; but do not limit to so; every technical solution of the present invention is modified or is equal to replacement, and not departing from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
As shown in Figure 1-2, infrared many interference simulations of broadband optical system of the present invention is comprised of scene generation device 100, interference collimating optical system 200, complex optics 300, beam-expanding element 400 and beam-expanding collimation optical system 500 and plane mirror 600 6 parts.The infrared scene that scene generation device 100 sends is after disturbing collimating optical system 200, by the plane mirror 600 parallel complex optics 300 that enters after 90 degree reflections of transferring, four tunnels are disturbed and after complex optics 300, are pooled coaxial beam from axle light pencil, and then after expanding via beam-expanding element 400, by beam-expanding collimation optical system 500, enter in coupling mirror again, by main projection system, projected infinite distance afterwards with target scene is compound, mate with tested optical system.
Described in the present invention, infrared broadband is disturbed the design of complex optics more, first according to systematic parameter, choose existing similar patent, afterwards according to system wavelength, visual field, the parameter requests such as focal length, according to Aberration Theory, by adding lens, change lens position etc. it is optimized, finally obtain infrared broadband and disturb more the optical texture of complex optics.In design process, this system adopts forward optical path-tracing, and to facilitate the utilization factor detecting by luminous energy after microlens array, result demonstration meets technical requirement completely.
The design of infrared many interference simulations of broadband complex optics is divided into three parts: disturb design, the design of complex optics 300 and the design of beam-expanding collimation optical system 500 of collimating optical system 200.
As shown in Figure 2, disturb collimating optical system 200 to be comprised of first lens 210, the second lens 220 and 230 3 lens of the 3rd lens, each surface of three lens is standard sphere.In addition, from first lens 210 to the 3rd lens 230, their material is respectively Si, Ge, Ge crystal.Complex optics 300 is comprised of the 4th lens 310, the 5th lens 320 and 330 3 lens of the 6th lens, and three each faces of lens are all standard sphere, and from the 4th lens 310 to the 6th lens 330, their material is respectively Si, Ge, Si crystal.Beam-expanding collimation optical system is comprised of the 7th lens 510, the 8th lens 520 and 530 3 lens of the 9th lens, and three each faces of lens are all standard sphere, and from the 7th lens 510 to the 9th lens 530, their material is respectively Si, Ge, Si crystal.To disturbing collimating optical system 200, complex optics 300 and beam-expanding collimation optical system 500 design respectively and optimize, finally more whole many interference simulations complex optics is optimized.
First to disturbing collimating optical system 200 to be optimized, adopt three lens to match, from first lens 210 to the 3rd lens 230, that lens strength is respectively is positive and negative, just, and material used is respectively Si, Ge, Ge.Its final focal length is 125mm.Disturbing collimating optical system 200 is 35mm from axle light pencil eccentric throw.
Then to the independent design optimization of complex optics 300, adopt three lens to match, from the 4th lens 310 to the 6th lens 330, lens strength is just respectively, and negative, just, material used is respectively Si, Ge, Si.Final focal length is 140mm.
Again beam-expanding collimation optical system 500 is optimized to design.Adopt three lens to coordinate, from the 7th lens 510 to the 9th lens 530, lens strength is just respectively, and negative, just, material used is respectively Si, Ge, Si.Final focal length is 75mm.
Finally whole system is optimized, is finally adjusted to transport function and is greater than 0.6 when 20lp/mm, approach diffraction limit, as shown in Figure 3.
The concrete optical parametric of optical system is as shown in table 1.
The concrete optical parametric of table 1 optical system
| Surface | Face type | Radius-of-curvature | Thickness | Material | Folding/anti-type |
| Object plane | Sphere | ∞ | 64 | ? | Refraction |
| 1 | Sphere | -18 | 5 | Ge | Refraction |
| 2 | Sphere | -23 | 40 | ? | Refraction |
| 3 | Sphere | -115 | 6 | Ge | Refraction |
| 4 | Sphere | -108 | 1 | ? | Refraction |
| 5 | Sphere | -170 | 7.5 | Si | Refraction |
| 6 | Sphere | -83 | 40 | ? | Refraction |
| Diaphragm | Plane | ∞ | 56 | ? | Reflection |
| 8 | Sphere | -144 | 15 | Si | Refraction |
| 9 | Sphere | -312 | 17 | ? | Refraction |
| 10 | Sphere | -445 | 12 | Ge | Refraction |
| 11 | Sphere | -210 | 116 | ? | Refraction |
| 12 | Sphere | -44 | 11 | Si | Refraction |
| 13 | Sphere | -41 | 18 | ? | Refraction |
| 14 | Lenticule | 0.04 | 3 | Si | Refraction |
| 15 | Sphere | ∞ | 15 | ? | Refraction |
| 16 | Sphere | 51 | 13 | Si | Refraction |
| 17 | Sphere | 45 | 60 | ? | Refraction |
| 18 | Sphere | 167 | 10 | Ge | Refraction |
| 19 | Sphere | 750 | 25 | ? | Refraction |
| 20 | Sphere | 226 | 12 | Si | Refraction |
| 21 | Sphere | 105 | 55 | ? | Refraction |
| Image planes | Sphere | ∞ | 0 | ? | Refraction |
Table one illustrates: in table one, label and Fig. 2 optics correspond to: object plane is the position of scene generation device 100,1-2 is the 3rd lens 230, and 3-4 is lens the 2 220, and 5-6 is first lens 210, diaphragm is plane mirror 600,8-9 is the 6th lens 330, and 10-11 is the 5th lens 320, and 12-13 is the 4th lens 310,14-15 is beam-expanding element 400,16-17 is the 9th lens 530, and 18-19 is the 8th lens 520, and 20-21 is the 7th lens 510.
Claims (10)
1. an infrared broadband is disturbed complex optics more, it is characterized in that described optical system comprises interference optical system, complex optics, beam-expanding element, beam-expanding collimation optical system and plane mirror five parts, wherein interference optical system Wei Si road, be positioned at perpendicular to the same plane of paper direction and along " ten " word direction and distribute, described interference optical system is by scene generation device and disturb collimating optical system to form, the infrared radiation that scene generation device sends after disturbing collimating optical system collimation by plane mirror is reflected, after complex optics is compound, enter again beam-expanding element, after expanding, it enters beam-expanding collimation optical system.
2. the infrared broadband of one according to claim 1 is disturbed complex optics more, and the degree of eccentricity that it is characterized in that described interference collimating optical system and complex optics is 35mm.
3. the infrared broadband of one according to claim 1 is disturbed complex optics more, it is characterized in that described scene generation device is positioned on the focal plane of disturbing collimating optical system.
4. the infrared broadband of one according to claim 1 is disturbed complex optics more, it is characterized in that described beam-expanding element is positioned on the focal plane of complex optics and beam-expanding collimation optical system.
5. according to the infrared broadband of the one described in claim 1 or 4, disturb complex optics more, it is characterized in that described beam-expanding element is microlens array.
6. the infrared broadband of one according to claim 5 is disturbed complex optics more, it is characterized in that unit size 20 × 20 μ m of described microlens array, spherical crown is high is 2.23 μ m, and lenticule unit number is 1400 × 1400, and lenticule unit radius-of-curvature is R=0.046mm.
7. according to the infrared broadband of one described in claim 1,2 or 3, disturb complex optics more, it is characterized in that described interference collimating optical system is comprised of first lens, the second lens and the 3rd lens, from first lens to the three lens, that lens strength is respectively is positive and negative, just, material used is respectively Si, Ge, Ge, and its final focal length is 125mm.
8. according to the infrared broadband of one described in claim 1,2 or 4, disturb complex optics more, it is characterized in that described complex optics is comprised of the 4th lens, the 5th lens and the 6th lens, from the 4th lens to the six lens, that lens strength is respectively is positive and negative, just, material used is respectively Si, Ge, Si, and final focal length is 140mm.
9. according to the infrared broadband of the one described in claim 1 or 4, disturb complex optics more, it is characterized in that described beam-expanding collimation optical system is comprised of the 7th lens, the 8th lens and the 9th lens, from the 7th lens to the nine lens, that lens strength is respectively is positive and negative, just, material used is respectively Si, Ge, Si, and final focal length is 75mm.
10. the infrared broadband of one according to claim 1 is disturbed complex optics more, and the imaging wave band that it is characterized in that described optical system is 2.2 ~ 4.8 μ m, and visual field is ± 4 °.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105717651A (en) * | 2014-12-02 | 2016-06-29 | 哈尔滨新光光电科技有限公司 | Multi-channel target simulation system based on beam combining prism and beam expanding field lens |
| CN107085313A (en) * | 2017-06-13 | 2017-08-22 | 哈尔滨工业大学 | Infrared imaging system spatial filter and the operating method of the wave filter based on double freedom micro-adjusting mechanism |
| CN108490594A (en) * | 2018-02-26 | 2018-09-04 | 北京仿真中心 | A kind of asymmetric reflective optical system based on micronano optical surface |
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| US20020005938A1 (en) * | 2000-05-30 | 2002-01-17 | Nikon Corporation | Projection optical system, exposure apparatus incorporating this projection optical system, and manufacturing method for micro devices using the exposure apparatus |
| EP0646828B1 (en) * | 1993-03-16 | 2003-11-12 | Seiko Epson Corporation | Projection type display device |
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| CN101907771A (en) * | 2009-06-04 | 2010-12-08 | 罗新军 | Design method of projection optical system for forming plane object into spherical image |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04200990A (en) * | 1990-11-30 | 1992-07-21 | Fanuc Ltd | Beam path shifting type laser beam cutting machine |
| EP0646828B1 (en) * | 1993-03-16 | 2003-11-12 | Seiko Epson Corporation | Projection type display device |
| US20020005938A1 (en) * | 2000-05-30 | 2002-01-17 | Nikon Corporation | Projection optical system, exposure apparatus incorporating this projection optical system, and manufacturing method for micro devices using the exposure apparatus |
| JP2005093522A (en) * | 2003-09-12 | 2005-04-07 | Canon Inc | Optical illumination system and aligner using the same |
| CN101907771A (en) * | 2009-06-04 | 2010-12-08 | 罗新军 | Design method of projection optical system for forming plane object into spherical image |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717651A (en) * | 2014-12-02 | 2016-06-29 | 哈尔滨新光光电科技有限公司 | Multi-channel target simulation system based on beam combining prism and beam expanding field lens |
| CN105717651B (en) * | 2014-12-02 | 2019-02-15 | 哈尔滨新光光电科技有限公司 | It is a kind of based on beam cementing prism and the multi-channel target simulation system for expanding field lens |
| CN107085313A (en) * | 2017-06-13 | 2017-08-22 | 哈尔滨工业大学 | Infrared imaging system spatial filter and the operating method of the wave filter based on double freedom micro-adjusting mechanism |
| CN107085313B (en) * | 2017-06-13 | 2019-04-16 | 哈尔滨工业大学 | Based on the infrared imaging system spatial filter of double freedom micro-adjusting mechanism and the operating method of the filter |
| CN108490594A (en) * | 2018-02-26 | 2018-09-04 | 北京仿真中心 | A kind of asymmetric reflective optical system based on micronano optical surface |
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