CN203364837U - Extra-large-view-field and multi-target scenery simulation system - Google Patents
Extra-large-view-field and multi-target scenery simulation system Download PDFInfo
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- CN203364837U CN203364837U CN 201320413877 CN201320413877U CN203364837U CN 203364837 U CN203364837 U CN 203364837U CN 201320413877 CN201320413877 CN 201320413877 CN 201320413877 U CN201320413877 U CN 201320413877U CN 203364837 U CN203364837 U CN 203364837U
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Abstract
The utility model provides an extra-large-view-field and multi-target scenery simulation system which comprises a light source system, a target system, a collimation system, a rotary beam splitting system and a control system, wherein the light source system provides a uniform face light source; the uniform face light source forms a target beam through the target system; and the target beam passes through the collimation system, then is divided into more than two parallel beams by the rotary beam splitting system, and enters a to-be-tested imaging system. The system can solve the problems that the cost is high due to multiple collimator tubes, and a scenery simulation view field is too small caused by a movement mechanism at a focal plane; the system is concise in structure, can achieve multi-target and large-view-field scenery simulation, and saves the acquisition cost of testing equipment greatly; under the condition that the collimation system is not increased, double-target scenery simulation is obtained ingeniously; through expansion of a beam splitter prism, simulation of more targets can be achieved; and the system is an initiate in China.
Description
Technical field
The utility model belongs to optical field, relates to a kind of ultra-large vision field multiple goal object simulation system, specifically in laboratory, large visual field optical system being carried out to object simulation.
Background technology
In aerial image equipment, naval vessel optical system, target range photoelectric measurement equipment, weapon control system and laser communications system, the super wide visual field optical system ingredient important as it played extremely important effect.During to the detection of the indexs such as the image quality of super wide visual field optical system, tracking performance, magnitude detectivity, need to use special inspecting equipment.This equipment need to meet the requirement of large visual field on the one hand, needs on the other hand to carry out the simulation of moving target, and both are indispensable.
For example, while large visual field star sensor being carried out to the magnitude simulation of many visual fields, generally need two to a plurality of parallel light tube colimated light systems, to carry out multiobject simulation, in order to test the positioning precision of star sensor.In test process, need the skimulated motion target, thereby while verifying its operation on orbit to the control degree of satellite spatial attitude.Generally have three kinds of modes to carry out the skimulated motion target: a kind of is that parallel light tube maintains static, and star sensor is placed on a high precision rate table, sets turntable and rotates, and can reach the effect of the relative camera motion of asterism target; Another analog form is that packaged type mechanism is installed at the focal surface of collimator tube place, and this mechanism can guarantee in position of focal plane the motion of Target Board two-dimensional directional, and star sensor, to the imaging of motion asterism, carrys out the skimulated motion target by this way; The third is identical with second way principle, and difference is, packaged type focal plane mechanism is replaced with to LCDs, by the moving image on the computer control LCD screen, carrys out the skimulated motion target.
In above-mentioned three kinds of modes, first kind of way needs at least 2 parallel light tubes, just can complete the magnitude simulation of two targets, and target simulation quantity is directly proportional to light pipe quantity.As everyone knows, the parallel light tube cost that light beam collimation and system ripple differ good is higher, comparatively expensive for realizing the device that multi-target simulation builds up.The second and the third mode have same shortcoming, because the visual field of parallel light tube is all smaller (only visual field) in a measure generally, the target travel scope that portable mechanism kinematic like this can be simulated is less, for the optical system of star sensor of large visual field, just in the visual field, center, in very little scope, move, can not meet the checking demand of the full visual field of star sensor positioning precision.
For short focal length, large view field imaging camera, also need to, under different visual fields, different gains, different exposure time, the brightness of different target spoke in laboratory, fully verify its imaging capability to moving target.As mentioned above, also there is same shortcoming in analog form.
The utility model content
In order to solve the problems such as the involving great expense of causing such as a plurality of parallel light tubes of existing in background technology, object simulation visual field that focal plane place motion causes be too small, the utility model provides a kind of cost-saving, very big scope to greatest extent ground to improve Bi-objective or the multiobject ultra-large vision field object simulation system of object simulation visual field.
Technical solution of the present utility model is:
A kind of ultra-large vision field multiple goal object simulation system, comprise light-source system, goal systems, colimated light system, rotation beam splitting system and control system; Described light-source system provides uniform area light source, and this uniform area light source forms target beam by goal systems, and target beam is divided into the parallel beam more than two-way by the rotation beam splitting system again after colimated light system, is incident to tested imaging system;
Described rotation beam splitting system comprises Amici prism, rotating mechanism, extending mechanism, first fold axle mirror and bracing frame; Described Amici prism is positioned on the optical axis of outgoing beam of colimated light system, and jointly is fixed on bracing frame with rotating mechanism and extending mechanism; Amici prism and extending mechanism drive the optical axis rotation around the outgoing beam of colimated light system by rotating mechanism;
Described first fold axle mirror is installed on extending mechanism and divides the extension on light direction at Amici prism, and relative with Amici prism fixing, the folding axle mirror back side is provided with one dimension and adjusts leaning device, in order at one-dimensional square to the angle of adjusted folding axle mirror folded light beam (can regulate the reflection optical axis that makes first fold axle mirror parallel with the transmission optical axis of Amici prism or form an angle according to other simulation demands); The extended distance of extending mechanism is adjustable, to realize the adjusting of distance between first fold axle mirror and Amici prism.
Based on above-mentioned basic scheme, the utility model has also further been done following optimization and has been limited and improve:
Above-mentioned colimated light system is the off-axis reflection optical system, is included in the primary mirror, the second folding axle mirror and the iris that set gradually in lens barrel; Target beam is successively through the second folding axle mirror, primary mirror reflection, then the outgoing beam that sees through the second folding axle mirror and collimate through iris formation.
Above-mentioned extending mechanism adopts guide rail type movable parts (can accurately realize rotating so the traversing amount of beam splitting system beam splitting light).
Above-mentioned goal systems comprises multiple goal automatic replacement universal stage and is arranged on the plurality of target plate on multiple goal automatic replacement universal stage; Described plurality of target plate comprises resolution chart, star tester and black and white strip plate; Described resolution chart and star tester all have many groups, and the black and white strip plate is identical with the Nyquist spatial frequency of the camera of tested imaging system.
Above-mentioned light-source system comprises integrating sphere, halogen tungsten lamp and xenon lamp; Described halogen tungsten lamp and xenon lamp are arranged on the inwall of integrating sphere; Described control system is connected with halogen tungsten lamp and xenon lamp; The wavelength band of the light that described halogen tungsten lamp and xenon lamp proportioning obtain is 200～2500nm.
Above-mentioned control system comprises: in order to the light source control module of controlling the brightness of light-source system output spoke, in order to the module of controlling the adjustment of colimated light system iris, in order to controlling module that the rotation beam splitting system rotates, in order to the module of controlling the tilt adjusting mechanism motion of the first fold axle mirror back side, in order to control module that extending mechanism moved and in order to control the module of multiple goal automatic replacement universal stage operation.
The surface figure accuracy of above-mentioned Amici prism reaches 140 λ, after the such light splitting of λ=632.8nm(, can introduce aberration hardly).
The utility model has the advantages that:
System architecture of the present utility model is simple and clear, can realize the simulation of multiple goal, large visual field scenery, has greatly saved the acquisition cost of testing apparatus.
The utility model utilizes Amici prism to realize minute luminous effect of collimation light beam, in the situation that do not increase colimated light system, has obtained dexterously the simulation of Bi-objective scenery.By the expansion to Amici prism, can also realize more multiobject simulation, initiate real the genus at home.
Ultra-large vision field multiple goal object simulation system of the present utility model, can, by rotating the control of beam splitting system, realize the function of Various Complex moving-target trace simulation.
Ultra-large vision field multiple goal object simulation system of the present utility model, can cover the simulation of spectral range from 200～2500nm range motion target.
Ultra-large vision field multiple goal object simulation system of the present utility model, can also complete the detection of the optical indexes such as optical system resolution, static MTF, dynamic MTF.
Ultra-large vision field multiple goal object simulation system of the present utility model, light source is selected the integrating sphere light source, has improved the stability of test.
Ultra-large vision field multiple goal object simulation system of the present utility model, goal systems is selected multiple goal automatic replacement universal stage, can to the target target plate, be replaced fast, has saved the test duration greatly.By driving circuit, with the rotation of moving-target wheel, the replacing of realize target, have three optoelectronic switches in each target coaxial direction, for code detection, and coded message returned to master control system.
Ultra-large vision field multiple goal object simulation system of the present utility model, light source is selected halogen tungsten lamp, xenon lamp reciprocally incorporated lamp, can realize broadband spectral energy proportioning and multiple color temperatures combination.
Ultra-large vision field multiple goal object simulation system of the present utility model, at colimated light system outgoing window, place is equipped with iris, can effectively block parasitic light, eliminates the veiling glare error that colimated light system is introduced; Also the bore of colimated light system outgoing beam can be adjusted according to the clear aperture size of different optical system, to meet the needs of different cameral test.
The accompanying drawing explanation
Fig. 1 is the structural representation of the ultra-large vision field multiple goal object simulation system that provides of the utility model.
Wherein:
The 1-integrating sphere; 2-organizes Target Board more; The 4-primary mirror; 5-folding axle mirror; The 6-iris; 7-rotates beam splitting system; The 8-bracing frame; The 9-Amici prism; The 10-rotating mechanism; The 11-extending mechanism; 12-folding axle mirror; The 13-system under test (SUT); The 14-control system; The 15-colimated light system.
Embodiment
Referring to Fig. 1, it is a kind of that the utility model provides, and this ultra-large vision field multiple goal object simulation system comprises light-source system, goal systems, colimated light system 15, rotation beam splitting system 7 and control system 14.Colimated light system is arranged on the emitting light path of light-source system; The rotation beam splitting system is arranged on the light-emitting window place of colimated light system; Control system is connected with light-source system, colimated light system, goal systems and rotation beam splitting system.
Light-source system comprises integrating sphere 1, halogen tungsten lamp and xenon lamp; Described halogen tungsten lamp and xenon lamp are arranged on the inwall of integrating sphere; Described control system is connected with halogen tungsten lamp and xenon lamp; The wavelength band of the light that described halogen tungsten lamp and xenon lamp proportioning obtain is 200～2500nm.
Colimated light system 15 is the off-axis reflection optical system; Described off-axis reflection optical system comprises primary mirror 4, folding axle mirror 5 and iris 6; Folding axle mirror, primary mirror are successively set on the emitting light path of light-source system after goal systems; Space Optical System to be measured is arranged on the emitting light path after the primary mirror reflection; Described iris is arranged between primary mirror and rotation beam splitting system; Described iris is the parasitic light diaphragm that disappears; Described off-axis reflection optical system is that bore is that Φ 100mm and focal length are the off-axis reflection optical systems of 1000mm.
Goal systems comprises multiple goal automatic replacement universal stage and is arranged on the many groups Target Board 2 on multiple goal automatic replacement universal stage; Described many group Target Boards comprise resolution chart, black and white strip plate and star tester; Described resolution chart is five groups; Described star tester is many groups; Described black and white strip plate is identical with tested imaging camera Nyquist spatial frequency.
Rotation beam splitting system 7 comprises Amici prism 9, rotating mechanism 10, extending mechanism 11, folding axle mirror 12 and the bracing frame 8 of large clear aperature; Described Amici prism, rotating mechanism, extending mechanism and folding axle mirror are all supported by bracing frame; Described Amici prism is positioned at the light-emitting window place of colimated light system; Described extending mechanism is connected Amici prism with folding axle mirror, extending mechanism can divide the light direction motion at Amici prism, realizes the variation of distance between folding axle mirror and Amici prism; Rotating mechanism can drive Amici prism, extending mechanism and the folding axle mirror direction rotation around the colimated light system optical axis; The folding axle mirror back side has one dimension to adjust leaning device, and the light beam that can guarantee to roll over the reflection of axle mirror to adjusting angle, so just can complete the simulation of different visual fields parallel beam at one-dimensional square.
Above-mentioned control system 14 comprises: in order to control the light source control module of light-source system output spoke brightness; The module of adjusting in order to control the colimated light system iris; The module of rotating in order to control the rotation beam splitting system; In order to control the module of folding axle mirror back side tilt adjusting mechanism motion in the rotation beam splitting system; The module of being moved in order to the extending mechanism of controlling in the rotation beam splitting system.
The specific works principle is as follows:
Halogen tungsten lamp, the light that xenon source sends becomes uniform area light source after integrating sphere, uniform area light source illuminates colimated light system image planes place Target Board, according to testing requirement rotating object turntable to required suitable target, colimated light system is infinity target picture by the target transposition, parallel beam is after Amici prism, be divided into the two-way light beam, a branch of along former direction, a branch of edge is reflected via folding axle mirror perpendicular to elementary beam direction (extending mechanism direction) in addition, realize the effect of light beam translation, rotating mechanism can rotate around the colimated light system optical axis, coordinate the packaged type extending mechanism, translation that can finished surface direction in space collimated light beam.Utilize this principle, realize the object simulation to ultra-large vision field, Bi-objective, increase the quantity of rotation beam splitting system, more can realize large visual field, multiobject object simulation.
When tested optical system is carried out to the detection of resolution index, can utilize control system adjustment aim system that the lattice-shaped Target Board is turned to colimated light system focal plane place, light-source system evenly illuminates target, tested optical system is to target imaging, check photographic images, during observation until just can all offer a clear explanation the lines of four direction in this group on a certain group, in the time of can not entirely offering a clear explanation in next group, so this to organize lines interval be exactly tested camera resolution.
When tested optical system is carried out to the MTF detection, utilize above-mentioned steps that Target Board is converted to the black and white strip Target Board, the black and white strip plate is identical with tested system Nyquist spatial frequency, regulate light-source brightness and camera integration time shutter, make optical system CCD/CMOS device be operated in linear zone and close on saturated; Regulate the black and white strip plate of focal surface of collimator tube, the intensity U of corresponding bright fringes from direction printing opacity band between the readable clearancen of image device output data
wthe dark fringe intensity U corresponding with light tight band
d;
Press formula (1) computing system degree of modulation;
In formula
---the average output valve that the printing opacity band is corresponding
γ---spatial frequency Lp/mm;
M (γ)---system modulation degree.
Data are processed:
According to formula (2) computing system MTF:
In formula: the waveform modification coefficient of k-black and white strip card, generally get π/4
M
i(γ)-according to the actual test parameter of target channel(l)ed plate, 0.98, can be similar to when above and be taken as 1.
When optical system is carried out to the magnitude analog detection, by the spectral radiant emittance meter to light-source system spectral information gathered, utilize formula (3), (4) to calculate colimated light system light-emitting window place illuminance.
Wherein:
K
mthe corresponding photopic vision maximum spectral luminous efficacy of human eye constant, described K
mget 683lm/W;
V (λ) is human eye photopic vision function;
Wherein:
D is the asterism element diameter;
F ' is the colimated light system focal length;
L (λ) is the spoke brightness value;
τ is the transmitance of colimated light system;
According to the illuminance value E obtained
illuminancecalculated the apparent magnitude m value, its computing formula is shown in formula (5):
LgE
illuminance-lgE
0=0.4 (m-0) (5)
Wherein:
E
0zero illuminance corresponding to star such as grade, described E
02.648 * 10
-6lx;
Ultra-large vision field multiple goal object simulation device of the present utility model can complete the detection to optical system resolution, MTF and magnitude simulation, be one have wide range of applications, testing apparatus that measuring accuracy is good.
Ultra-large vision field multiple goal object simulation device of the present utility model does not need many group parallel light tubes, just can solve multiobject object simulation, greatly reduce the cost of traditional analog device, and, on the basis of only using a parallel light tube, just can realize the object simulation of ultra-large vision field.In background technology, the shortcoming high such as cost, that visual field is little of three kinds of object simulation devices of tradition is all perfectly eliminated, and it is not only the equipment that energy handled easily in laboratory uses, in the engineering application, also have broad prospects, and being widely used of value.
Ultra-large vision field multiple goal object simulation system of the present utility model, can improve by the upgrading to rotating mechanism and extending mechanism kinematic accuracy the motion stabilization degree of simulating scenery.This equipment all has application very widely at aspects such as optical system imaging quality test, the detection of photoelectric follow-up tracking performance, the detections of star sensory system magnitude, function is inestimable.
Claims (7)
1. a ultra-large vision field multiple goal object simulation system, is characterized in that: comprise light-source system, goal systems, colimated light system, rotation beam splitting system and control system; Described light-source system provides uniform area light source, and this uniform area light source forms target beam by goal systems, and target beam is divided into the parallel beam more than two-way by the rotation beam splitting system again after colimated light system, is incident to tested imaging system;
Described rotation beam splitting system comprises Amici prism, rotating mechanism, extending mechanism, first fold axle mirror and bracing frame; Described Amici prism is positioned on the optical axis of outgoing beam of colimated light system, and jointly is fixed on bracing frame with rotating mechanism and extending mechanism; Amici prism and extending mechanism drive the optical axis rotation around the outgoing beam of colimated light system by rotating mechanism;
Described first fold axle mirror is installed on extending mechanism and divides the extension on light direction at Amici prism, and relative with Amici prism fixing, and the folding axle mirror back side is provided with one dimension and adjusts leaning device, in order to the angle to adjusted folding axle mirror folded light beam at one-dimensional square; The extended distance of extending mechanism is adjustable, to realize the adjusting of distance between first fold axle mirror and Amici prism.
2. ultra-large vision field multiple goal object simulation system according to claim 1 is characterized in that:
Described colimated light system is the off-axis reflection optical system, is included in the primary mirror, the second folding axle mirror and the iris that set gradually in lens barrel; Target beam is successively through the second folding axle mirror, primary mirror reflection, then the outgoing beam that sees through the second folding axle mirror and collimate through iris formation.
3. ultra-large vision field multiple goal object simulation system according to claim 1 is characterized in that:
Described extending mechanism adopts the guide rail type movable parts.
4. ultra-large vision field multiple goal object simulation system according to claim 1 is characterized in that:
Described goal systems comprises multiple goal automatic replacement universal stage and is arranged on the plurality of target plate on multiple goal automatic replacement universal stage; Described plurality of target plate comprises resolution chart, star tester and black and white strip plate; Described resolution chart and star tester all have many groups, and the black and white strip plate is identical with the Nyquist spatial frequency of the camera of tested imaging system.
5. ultra-large vision field multiple goal object simulation system according to claim 1 is characterized in that:
Described light-source system comprises integrating sphere, halogen tungsten lamp and xenon lamp; Described halogen tungsten lamp and xenon lamp are arranged on the inwall of integrating sphere; Described control system is connected with halogen tungsten lamp and xenon lamp; The wavelength band of the light that described halogen tungsten lamp and xenon lamp proportioning obtain is 200～2500nm.
6. ultra-large vision field multiple goal object simulation system according to claim 2, it is characterized in that: described control system comprises: in order to the light source control module of controlling the brightness of light-source system output spoke, in order to the module of controlling the adjustment of colimated light system iris, in order to controlling module that the rotation beam splitting system rotates, in order to the module of controlling the tilt adjusting mechanism motion of the first fold axle mirror back side, in order to control module that extending mechanism moved and in order to control the module of multiple goal automatic replacement universal stage operation.
7. ultra-large vision field multiple goal object simulation system according to claim 1, it is characterized in that: the surface figure accuracy of described Amici prism reaches 140 λ, λ=632.8nm.
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| CN 201320413877 CN203364837U (en) | 2013-07-11 | 2013-07-11 | Extra-large-view-field and multi-target scenery simulation system |
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| CN 201320413877 CN203364837U (en) | 2013-07-11 | 2013-07-11 | Extra-large-view-field and multi-target scenery simulation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364011A (en) * | 2013-07-11 | 2013-10-23 | 中国科学院西安光学精密机械研究所 | Super-large visual field multi-target scenery simulation system |
| CN104931239A (en) * | 2015-06-12 | 2015-09-23 | 北京理工大学 | MTF test apparatus and method for small off-axis optical system |
| CN107941328A (en) * | 2017-11-22 | 2018-04-20 | 中国科学院长春光学精密机械与物理研究所 | Stray light suppression device outside a kind of solar irradiance monitor visual field |
| CN111060137A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院长春光学精密机械与物理研究所 | Multi-star simulator |
-
2013
- 2013-07-11 CN CN 201320413877 patent/CN203364837U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364011A (en) * | 2013-07-11 | 2013-10-23 | 中国科学院西安光学精密机械研究所 | Super-large visual field multi-target scenery simulation system |
| CN103364011B (en) * | 2013-07-11 | 2015-10-21 | 中国科学院西安光学精密机械研究所 | Ultra-large vision field multiple goal object simulation system |
| CN104931239A (en) * | 2015-06-12 | 2015-09-23 | 北京理工大学 | MTF test apparatus and method for small off-axis optical system |
| CN104931239B (en) * | 2015-06-12 | 2018-12-21 | 北京理工大学 | A kind of MTF test device and method for small-sized off-axis optical system |
| CN107941328A (en) * | 2017-11-22 | 2018-04-20 | 中国科学院长春光学精密机械与物理研究所 | Stray light suppression device outside a kind of solar irradiance monitor visual field |
| CN111060137A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院长春光学精密机械与物理研究所 | Multi-star simulator |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20151021 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20151021 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |