CN105717651A - Multi-channel target simulation system based on beam combining prism and beam expanding field lens - Google Patents
Multi-channel target simulation system based on beam combining prism and beam expanding field lens Download PDFInfo
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- CN105717651A CN105717651A CN201410714985.4A CN201410714985A CN105717651A CN 105717651 A CN105717651 A CN 105717651A CN 201410714985 A CN201410714985 A CN 201410714985A CN 105717651 A CN105717651 A CN 105717651A
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Abstract
The invention discloses a multi-channel target simulation system based on a beam combining prism and a beam expanding field lens, and belongs to the technical field of optical simulation and test. The existing beam combining method can combine beams of different wavelengths, but cannot combine beams of the same wavelength. The multi-channel target simulation system is composed of an optical coupling system (1), a target sub-channel (2) and a beam combining prism (3), wherein the beam combining prism is of a hexagonal pyramid structure, has six reflecting surfaces, and can combine target beams in six target sub-channels; and the optical coupling system comprises an optical microstructure beam expanding field lens, which etches a certain number of array micro lenses on the surface of an element in a photolithography mode to realize a beam expansion function. By adopting the multi-channel target simulation system, a plurality of moving targets and interference point sources can be simulated in the same view field, and the tracking precision and the anti-interference tracking capability of a tracking and pointing optical imaging system can be tested.
Description
Technical field
The invention belongs to optical analog emulation and technical field of measurement and test, relate generally to a kind of based on beam cementing prism and the multi-channel target analog systems expanding field lens.
Background technology
Development along with semi-true object emulation technology, it is desirable to target simulator can provide scene more true to nature and target image.But, actual scene not only comprises target, also comprises the jamming target similar to target, this just require target simulator can simulated target and interference point source simultaneously, and multiple targets are combined with each other, Shared aperture output in same visual field.
Existing light beam closes Shu Fangfa as shown in Figure 1, the two-beam with different wave length is utilized and is undertaken closing bundle by the beam cementing prism of two corner cube prism gluings, wherein light beam beam cementing prism separating surface completely through, another light beam is fully reflective at separating surface, thus realizing the conjunction beam function of two light beams.But owing to the two-beam with phase co-wavelength cannot be realized being all-trans and full impregnated by this beam cementing prism simultaneously, therefore, the two-beam with phase co-wavelength can not be carried out closing bundle by this method.China Patent Publication No. CN1O3486906A, publication date on 01 01st, 2014, the name of innovation and creation is called " the complex target simulator of a kind of laser, IR point source and infrared imaging ", this complex target simulator includes target coupled apparatus, infrared imaging passage, IR point source passage and laser channeling, plurality of IR point source passage and laser channeling circumference uniform distribution centered by infrared imaging passage.Target beam in each passage is reflected mirror and reflexes on the diffuse-reflectance face of coupled apparatus, light beam after diffuse-reflectance can be propagated to all directions, but always some light beam is along the Propagation of optical imaging system, therefore can, couple thus realizing multiple target after the reflection in diffuse-reflectance face by the light beam coupling of multiple targets (containing jamming target) incident in different passages together.But adopt diffuse-reflectance mode to carry out closing bundle and there is the problems such as energy loss is serious, veiling glare is too much, the problem such as imageable target and background illuminance simultaneously also can be brought to reduce, contrast is poor, therefore it is difficult to provide true to nature, scene and complex target image clearly.In view of this, prior art solves multiobject complex imaging problem not yet well.
Summary of the invention
Instant invention overcomes deficiency of the prior art, provide a kind of based on beam cementing prism and the multi-channel target analog systems expanding field lens, can by the complex imaging in same field range of the Point Target in multiple target subchannels, it is achieved thereby that the test to pointing optical imaging system tracking accuracy and anti-interference tracking ability.
The technical solution used in the present invention is:
Optical coupling system (1), beam cementing prism (3) and target subchannel (2) is included based on beam cementing prism and the multi-channel target analog systems expanding field lens；Described beam cementing prism adopts hexagonal pyramid version, has six reflectings surface, it is possible to carry out the light beam in 6 target subchannels closing bundle；Described optical coupling system is by mirror group 1(5), optical microstructures expand field lens (4) and mirror group 2(6) constitute, wherein optical microstructures expand field lens element surface etch some array lenticule.
Described beam cementing prism, each reflecting surface is plated with the reflective coating of high reflectance, and beam cementing prism is placed on the entrance pupil position of optical coupling system, and this position is also the exit pupil position of target subchannel simultaneously.
Described optical microstructures expands field lens and is placed on the image space position of focal plane of mirror group 2.
The existing Shu Fangfa of conjunction is capable of the light beam of different wave length and closes bundle, but can not carry out the light beam of phase co-wavelength closing bundle.The invention has the beneficial effects as follows:
(1) beam cementing prism adopts hexagonal pyramid version, has six reflectings surface, it is possible to carry out the target beam in 6 target subchannels closing bundle simultaneously；
(2) optical microstructures is expanded field lens and is etched the array lenticule of some by photolithographicallpatterned at element surface, and each lenticule to expand multiplying power consistent, the target beam in each target subchannel so can be made at the whole emergent pupil that can be full of optical coupling system after expanding field lens, thus realizing multiple target and the composite analogy of interference point source；
(3) closing energy loss in bundle process little, veiling glare is few, using the teaching of the invention it is possible to provide true to nature, complex target image clearly.
Accompanying drawing explanation
Fig. 1 is the structural representation of tradition beam cementing prism；
Fig. 2 is based on beam cementing prism and the composition diagram of the multi-channel target analog systems expanding field lens；
Fig. 3 is based on beam cementing prism and the plan structure figure of the multi-channel target analog systems expanding field lens；
Fig. 4 is based on beam cementing prism and the side block diagram of the multi-channel target analog systems expanding field lens；
Fig. 5 is the structure chart of beam cementing prism；
Fig. 6 is the light path principle figure of optical coupling system；
Fig. 7 is the top view that optical microstructures expands field lens；
Fig. 8 is the side view that optical microstructures expands field lens；
Fig. 9 is based on beam cementing prism and the light path principle figure of the multi-channel target analog systems expanding field lens；
Figure 10 is that optical microstructures expands in field lens some and lenticular expands light path principle figure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Based on beam cementing prism and the multi-channel target analog systems expanding field lens composition as shown in Figure 2, being made up of optical coupling system (1), beam cementing prism (3) and target subchannel (2), wherein each target subchannel forms by blackbody radiation source (7), secondary imaging system (8) and target light hurdle motion (9).Fig. 3 is based on beam cementing prism and the plan structure figure of the multi-channel target analog systems expanding field lens, the optical axis of optical coupling system as shown in the drawing (1) and target subchannel (2) is mutually perpendicular to, and centre realizes optical coupling system by beam cementing prism (3) and docks with the light path of target subchannel.Fig. 4 is based on beam cementing prism and the side block diagram of the multi-channel target analog systems expanding field lens, and multi-channel target analog systems as shown in the drawing comprises 6 target subchannels (2), and they carry out circumference uniform distribution centered by beam cementing prism.The present invention can by the complex imaging in same field range of the Point Target in multiple target subchannels, thus realizing tracking accuracy and the anti-interference tracking ability thereof of pointing optical imaging system are tested.
Described target subchannel, each of which is made up of blackbody radiation source, secondary imaging system and target light hurdle motion, wherein secondary imaging system is capable of the Uniform Illumination of target light hurdle motion, is capable of target subchannel simultaneously and couples with the perfect of optical coupling system；Blackbody radiation source and target light hurdle motion cooperate, it is possible to generate that an energy adjustable, size be variable, the IR point source target of position changeable.
The structure of described beam cementing prism, as it is shown in figure 5, adopt hexagonal pyramid version, has 6 reflectings surface, it is possible to realize the conjunction beam function of 6 target subchannel internal object light beams；Each reflecting surface is plated with the reflective coating of high reflectance, and ensures that reflectance is all higher than 90%, so can eliminate residual aberration during imaging as far as possible, improves image quality；Beam cementing prism is placed on the entrance pupil position of optical coupling system, and this position is also the exit pupil position of target subchannel simultaneously, so can reduce the energy loss closed in bundle process, reduces the impact of veiling glare.
Described optical coupling system is as shown in Figure 6, by mirror group 1(5), optical microstructures expand field lens (4) and mirror group 2(6) form, wherein optical microstructures is expanded field lens and is etched the array lenticule of some by the mode of photoetching at element surface, and each lenticule to expand multiplying power consistent.Fig. 7 is the top view that optical microstructures expands field lens, and shown in this figure, each lenticule is 20um at the width of X-direction and Y-direction；Fig. 8 is the side view that optical microstructures expands field lens, and shown in this figure, each lenticular radius of curvature is 100um.Optical microstructures expands field lens and is placed on the image space position of focal plane of mirror group 2, when the target beam in each target subchannel can be full of the whole emergent pupil of optical coupling system after expanding field lens by optical microstructures, thus realizing the composite analogy of 6 Point Target.But due to the restriction of photoetching process level, actual mechanical process use clouded glass replace optical microstructures to expand field lens.Optical coupling system adopts telecentric beam path design, and the energy loss after so can making beam expander is preferably minimized.Optical coupling system is transmissive system, and its visual field covers the visual field of pointing optical imaging system, and emergent pupil aperture covers the entrance pupil aperture of pointing optical imaging system, is so possible not only to realize the perfect coupling of optical system, can reduce the imaging aberration of system simultaneously.
Based on beam cementing prism and the multi-channel target analog systems expanding field lens operation principle as shown in Figure 9, each target subchannel (2) is all provided that the IR point source target that energy, a size and location are all variable, and the symbiosis of 6 target subchannels (2) becomes 6 IR point source targets.Beam cementing prism (3) is placed on the entrance pupil position of optical coupling system (1), and the outgoing beam of 6 Point Target closes bundle respectively after 6 reflective surface of beam cementing prism and enters optical coupling system.But, target beam that in each target subchannel, Point Target sends (includes the light beam along picture frame outermost outgoing in target subchannel) after reflecting through beam cementing prism and the whole entrance pupil of underfill optical coupling system, and simply cover a part for entrance pupil, such result can cause that outgoing beam also cannot be full of the whole emergent pupil of optical coupling system, so that multiple target cannot be combined with each other.Therefore, optical coupling system adds optical microstructures and expands field lens (4), and place it in mirror group 2(6) image space position of focal plane.So, the target beam that each Point Target sends realizes beam expander after expanding field lens through optical microstructures, and expand light path principle figure as shown in Figure 10, it expands in field lens some for optical microstructures and lenticular expands schematic diagram, and two light beams increase realizing angle after lenticular expanding.Light beam after expanding is through mirror group 1(5) the final whole emergent pupil (10) being full of optical coupling system after collimation, it is achieved thereby that the Shared aperture output of 6 Point Target that energy, size and location are all different or interference in the field range of pointing optical imaging system, it is achieved that the test to the tracking accuracy of pointing optical imaging system and capacity of resisting disturbance.
Claims (3)
1. based on beam cementing prism and the multi-channel target analog systems expanding field lens, it is characterized in that, including optical coupling system (1), beam cementing prism (3) and target subchannel (2)；Described beam cementing prism adopts hexagonal pyramid version, has six reflectings surface, it is possible to carry out the light beam in 6 target subchannels closing bundle；Described optical coupling system is by mirror group 1(5), optical microstructures expand field lens (4) and mirror group 2(6) constitute, wherein optical microstructures expand field lens element surface etch some array lenticule.
2. according to claim 1 a kind of based on beam cementing prism and the multi-channel target analog systems expanding field lens, it is characterized in that, described beam cementing prism, each reflecting surface is plated with the reflective coating of high reflectance, and beam cementing prism is placed on the entrance pupil position of optical coupling system, this position is also the exit pupil position of target subchannel simultaneously.
3. according to claim 1 a kind of based on beam cementing prism and the multi-channel target analog systems expanding field lens, it is characterized in that, described optical microstructures expands field lens and is placed on the image space position of focal plane of mirror group 2.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842560A (en) * | 2017-02-20 | 2017-06-13 | 哈尔滨工业大学 | A kind of energy conditioner for infrared target simulator |
| CN110381232A (en) * | 2018-04-13 | 2019-10-25 | 甘肃智呈网络科技有限公司 | Integral type multispectral imaging photographic device |
| CN111272283A (en) * | 2019-12-19 | 2020-06-12 | 哈尔滨新光光电科技股份有限公司 | Imaging optical system based on multi-channel combination and interference elimination method |
| CN112230315A (en) * | 2020-12-10 | 2021-01-15 | 武汉乾希科技有限公司 | Mirror group, method for growing mirror group, optical device and optical system |
| CN112433381A (en) * | 2020-11-20 | 2021-03-02 | 北京航天长征飞行器研究所 | Moving point target image generation device under laser interference condition |
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| CN103486906A (en) * | 2013-09-06 | 2014-01-01 | 北京理工大学 | Laser, infrared point source and infrared imaging combined target simulator |
| CN103744183A (en) * | 2014-01-24 | 2014-04-23 | 哈尔滨工业大学 | Infrared broadband multi-interference compound optical system |
| CN103759222A (en) * | 2014-02-21 | 2014-04-30 | 哈尔滨工业大学 | Four-jamming-light-path infrared jamming simulation system using microlens array as beam expansion element |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486906A (en) * | 2013-09-06 | 2014-01-01 | 北京理工大学 | Laser, infrared point source and infrared imaging combined target simulator |
| CN103744183A (en) * | 2014-01-24 | 2014-04-23 | 哈尔滨工业大学 | Infrared broadband multi-interference compound optical system |
| CN103759222A (en) * | 2014-02-21 | 2014-04-30 | 哈尔滨工业大学 | Four-jamming-light-path infrared jamming simulation system using microlens array as beam expansion element |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842560A (en) * | 2017-02-20 | 2017-06-13 | 哈尔滨工业大学 | A kind of energy conditioner for infrared target simulator |
| CN110381232A (en) * | 2018-04-13 | 2019-10-25 | 甘肃智呈网络科技有限公司 | Integral type multispectral imaging photographic device |
| CN111272283A (en) * | 2019-12-19 | 2020-06-12 | 哈尔滨新光光电科技股份有限公司 | Imaging optical system based on multi-channel combination and interference elimination method |
| CN112433381A (en) * | 2020-11-20 | 2021-03-02 | 北京航天长征飞行器研究所 | Moving point target image generation device under laser interference condition |
| CN112230315A (en) * | 2020-12-10 | 2021-01-15 | 武汉乾希科技有限公司 | Mirror group, method for growing mirror group, optical device and optical system |
| CN112230315B (en) * | 2020-12-10 | 2021-03-09 | 武汉乾希科技有限公司 | Mirror group, method for growing mirror group, optical device and optical system |
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Address after: 150001 No. 1 Nanhu Street, Yingbin Road Concentrated Area, Harbin Development Zone, Heilongjiang Province Patentee after: Harbin Xinguang Photoelectric Technology Co., Ltd. Address before: 150001 No. 1 Nanhu Street, Yingbin Road Concentrated Area, Harbin Development Zone, Heilongjiang Province Patentee before: Harbin Xinguang Photoelectric Technology Co., Ltd. |
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