CN201348508Y - Standard starlight simulator and stray light PST optical detection system containing same - Google Patents

Standard starlight simulator and stray light PST optical detection system containing same Download PDF

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Publication number
CN201348508Y
CN201348508Y CNU2008201846046U CN200820184604U CN201348508Y CN 201348508 Y CN201348508 Y CN 201348508Y CN U2008201846046 U CNU2008201846046 U CN U2008201846046U CN 200820184604 U CN200820184604 U CN 200820184604U CN 201348508 Y CN201348508 Y CN 201348508Y
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China
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light
optical
standard
star
detection system
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Expired - Fee Related
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CNU2008201846046U
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Chinese (zh)
Inventor
马臻
李英才
汶德胜
樊学武
陈荣利
车弛骋
冯广军
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XiAn Institute of Optics and Precision Mechanics of CAS
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XiAn Institute of Optics and Precision Mechanics of CAS
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Abstract

The utility model relates to a standard starlight simulator and a stray light PST optical detection system containing same. The standard starlight simulator comprises a light source, an iris diaphragm, a dodging device, a star point plate and a collimation system; the iris diaphragm is arranged on an incident light path; the dodging device is arranged on an output light path of the iris diaphragm; the star point plate is arranged on the dodging device; and the collimation system is arranged on the output light path of the star point plate. The utility model provides standard starlight simulator and a stray light PST optical detection system which can largely expand the range of simulating star and the like, and can measure and calibrate accurately in the environment of extreme low light and has high measurement precision.

Description

Standard star optical simulator and contain the parasitic light PST optical detection system of this simulator
Technical field
The parasitic light PST optical detection system that the utility model relates to a kind of standard star optical simulator and contains this simulator.
Background technology
Starlight analog device is a kind of standard source of mete-wand, mainly is in order to set up standard magnitude light quantity.As a kind of ground calibration facility, star simulator simulates faint starlight illumination, star angular diameter and spectral characteristic, in order to test and demarcate fixed star, satellite sensor, star sensor susceptibility to the extraterrestrial target of different magnitudes, spectral characteristic, satisfy the starlight detector, the needs of star sensor ground surface simulation test.At present, star simulator has become ground rating test critical equipment such as starlight detector, star sensor.
Along with detectivity and accuracy requirement to the starlight detector are more and more higher, this must also have higher requirement to the calibration facility star simulator on ground.From the research of domestic and international association area, the external main following several modes that adopt of the generation of faint light:
1) place pin hole on the collimating light pipe focal plane, produce simulation asterism picture behind the light illumination, this scheme can't quantitatively calibrating, and the magnitude of simulation is lower;
2) with optical fiber light is directed on the collimating light pipe focal plane, regulates luminous flux by adding neutral attenuator, simulate the starlight of-2～8 stars such as grade, this scheme can't quantitatively calibrating, and adopts optical fiber light-guiding, the bending of optical fiber, and factors such as decay influence bigger to system accuracy.
3) adopt advanced liquid crystal light valve technology, delivered in real time on the high-resolution liquid crystal display screen by the simulation star chart that computing machine provides, illuminator illuminates liquid crystal display and produces the simulation asterism, is delivered on the star sensor to finish comparing and measuring of its star chart position by light pipe again.The method real-time height, pattern is flexible, but liquid crystal display resolution is low, and contrast is low, and the angular diameter that simulates is big, and can't quantitatively calibrating.
And at home in the numerous scientific research institution of scientific research, most liquid crystal light valve technology that adopt, but on the whole, the magnitude that this technology simulated is still lower, is difficult to satisfy the simulation of the faint starlight of high magnitude, and there is very big difficulty in the demarcation under the utmost point low light level situation.
Stray light level is an important indicator of optical system, and parasitic light has reduced the contrast and the signal to noise ratio (S/N ratio) of optical system image planes, produces hot spot on image planes, and object matter exerts an influence, and can cause thrashing when serious.Stray light level has directly influenced the raising of detectivity, thus the veiling glare of optical system design and detect imperative.From the research of association area both domestic and external, main by test solution to point source transmitance (PST) and two kinds of parameters of coefficient of stray light (V) to the evaluation and the check of veiling glare level.Point source transmitance (PST) is defined as: PST (θ)=E d(θ)/E.E wherein d(θ) be irradiance on the detector that causes of the light source by off-axis angle θ; E is perpendicular to the irradiance on the input aperture of this point source.
No matter be domestic or external, want to reach simultaneously the faint starlight and the quantitatively calibrating under the solution utmost point low light level situation that simulate higher magnitude and all do not obtain as yet well satisfying.
The utility model content
In order to solve the above-mentioned technical matters that exists in the background technology, the utility model provides a kind of scope that can significantly enlarge the simulation magnitude, can accurately measure demarcation under utmost point low light environment, the standard star optical simulator that measuring accuracy is high and the parasitic light PST optical detection system that contains this simulator.
Technical solution of the present utility model is: the utility model provides a kind of standard star optical simulator, and its special character is: this standard star optical simulator comprises light source, iris, light uniforming device, star tester and colimated light system; Described iris is arranged on the input path of light source; Described light uniforming device is arranged on the output light path of iris; Described star tester is arranged on the light uniforming device; Described colimated light system is arranged on the output light path of star tester.
Above-mentioned standard star optical simulator also comprises the luminosity metering outfit, and described spectrum metering outfit is arranged on the light uniforming device.
Above-mentioned luminosity metering outfit is illuminometer, photoelectric cell or spectral radiant emittance meter.
Above-mentioned star tester is provided with the asterism hole, and described asterism hole is one or more.
Above-mentioned light source halogen tungsten lamp or xenon source.
Above-mentioned colimated light system is off axis paraboloid mirror parallel light tube, refraction type parallel light tube or telescope optical system.
A kind of parasitic light PST optical detection system that contains the standard star optical simulator, its special character is: this optical detection system comprises standard star optical simulator, objective table and photodetector, light trapping; Described photodetector is arranged on the output light path of standard star optical simulator; Described objective table is arranged between photodetector and the standard star optical simulator.
Above-mentioned optical detection system also comprises light trapping, and described optical detection entire system places light trapping.
Above-mentioned objective table is two-dimentional objective table.
Above-mentioned photodetector is the high sensitivity photodetector.
Above-mentioned light trapping is black cloth, light shield or camera bellows.
The utility model has the advantages that:
1, can significantly enlarge the scope of simulation star.The utility model adopts iris to regulate luminous flux, compares with using neutral attenuator group combination adjusting luminous flux, and the continuous light tuning amount dynamic range of iris is big, has improved the scope and the precision of simulation magnitude.The utility model also adopts star tester to add collimating apparatus simultaneously, simulates infinite distant place starlight, and the star tester bore is very little, can simulate utmost point low light level illuminance value, and by the method for extrapolation simulation magnitude number is improved greatly.Star tester that replaceable use is different or aperture satisfying different needs, and can be opened a plurality of asterisms hole on a star tester, to realize the simulation of star chart, significantly enlarged the scope of simulation star.
2, under utmost point low light condition, can accurately measure demarcation.The utility model adopts light uniforming device, has guaranteed photodistributed homogeneity in the light uniforming device, cooperates the luminosity metering outfit simultaneously, makes the exit light quantity accurately to measure.Well having solved does not have the substandard measurement of the low light level to demarcate problem.
3, measuring accuracy height.The utility model matching standard highly-sensitive detector can carry out parasitic light PST test to long-focal distance optical system, and its test dynamic range is big, and dynamic range can reach 10 magnitudes.By increasing optical filter, it is panchromatic to make that system can carry out, monochromatic PST test, intersect calibration by changing different apertures, stated accuracy is higher, and it is little influenced by environment factors such as temperature, and can be by computing machine convenient, flexible management measurement and calibration process.
Description of drawings
Fig. 1 provides the preferred construction synoptic diagram of standard star system for the utility model;
Fig. 2 is a parasitic light PST optical detection system architecture synoptic diagram provided by the utility model.
Embodiment
Referring to Fig. 1, the utility model provides a kind of standard star optical simulator, and this standard star optical simulator comprises light source 1, iris 2, light uniforming device 3, star tester 5 and colimated light system 6, and iris 2 is arranged on the input path of light source 1; Light uniforming device 3 is arranged on the output light path of iris 2; Star tester 5 is arranged on the light uniforming device 3; Colimated light system 6 is arranged on the output light path of star tester 5.
This standard star optical simulator also comprises luminosity metering outfit 4 except that comprising above device, luminosity metering outfit 4 is arranged on the light uniforming device 3 a certain openings.
Can be provided with the asterism hole on the star tester 5, the asterism hole is one or more.
Light-source system 1 is to use the DC voltage stabilization and current stabilization electric light source as halogen tungsten lamp, xenon lamp etc.
Colimated light system 6 is off axis paraboloid mirror parallel light tube, refraction type parallel light tube or telescope optical system, various phtographic lenses.
Light source 1 enters light uniforming device 3 by the light that light-source system produces by iris 2, by regulating iris 2, makes light-inletting quantity variable, with the change of realization light uniforming device 3 exit luminance brightness, thereby simulates different starlight illuminations.
Luminosity metering outfit 4 is installed on light uniforming device 3,, but,, has solved demarcation problem under the utmost point low light level situation simultaneously so that feedback to be provided by changes of properties such as luminosity metering outfit measuring light characteristic and observation colour temperatures because light is evenly distributed in the light uniforming device 3.Light shines colimated light system 6 through the star tester 5 in light uniforming device 3 exits, simulates infinite distant place starlight, and star tester 5 bores of micron dimension cooperate the adjusting of iris 2, makes the magnitude of simulation improve greatly, and can extrapolated higher magnitude.Well simulate high magnitude faint light.Simultaneously can on star tester 5, open a plurality of asterisms hole, then can realize the simulation of many asterisms figure.
Scaling method: according to following formula:
E = π 4 ( d F ) 2 · L · T
Wherein d is the asterism bore dia, and F is the focal length of colimated light system 6, and L is the outlet brightness of light uniforming device 3, finishes measurement by luminosity metering outfit 4.T is the optical transmittance of colimated light system.
The utility model is when providing a kind of standard starlight device simulator, a kind of parasitic light PST optical detection system that contains the standard star optical simulator also is provided, this optical detection system comprises standard star optical simulator, objective table 8 and photodetector 9, and photodetector 9 is arranged on the output light path of standard star optical simulator; Objective table 8 is arranged between photodetector 9 and the standard star optical simulator.This optical detection system can also comprise light trapping 10 and color filter 7, and the optical detection entire system places light trapping 10, and color filter 7 places the light uniforming device exit.
The objective table of being mentioned in the optical detection system is two-dimentional objective table, can do pitching at two-dimensional directional, horizontally rotates.
Photodetector 9 is high sensitivity photodetectors.This high sensitivity photodetector is that the minimum detectable luminous power should be less than 1.0 * 10 -10W/m 2The high sensitivity photodetector.
Light trapping 10 is black cloth, light shield or camera bellows.
Parasitic light PST optical detection provided by the utility model system at first places optical system to be measured on the objective table 8 when carrying out the PST test, replaces star tester 5 with the aperture of larger caliber, makes iris 2 reach full-gear, to produce maximum incident light illumination.The light of star simulator outgoing enters tested optical system, is equipped with highly-sensitive detector 9, both can carry out the PST test, can increase the parasitic light characteristic of 7 pairs of tested optical systems of optical filter under polychrome or monochromatic light in light uniforming device 3 exits again and measure.

Claims (11)

1, a kind of standard star optical simulator is characterized in that: described standard star optical simulator comprises light source, iris, light uniforming device, star tester and colimated light system; Described iris is arranged on the input path of light source; Described light uniforming device is arranged on the output light path of iris; Described star tester is arranged on the light uniforming device; Described colimated light system is arranged on the output light path of star tester.
2, standard star optical simulator according to claim 1 is characterized in that: described standard star optical simulator also comprises the luminosity metering outfit, and described spectrum metering outfit is arranged on the light uniforming device.
3, standard star optical simulator according to claim 2 is characterized in that: described luminosity metering outfit is illuminometer, photoelectric cell or spectral radiant emittance meter.
4, according to claim 1 or 2 or 3 described standard star optical simulators, it is characterized in that: described star tester is provided with the asterism hole, and described asterism hole is one or more.
5, standard star optical simulator according to claim 4 is characterized in that: described light source is halogen tungsten lamp or xenon source.
6, standard star optical simulator according to claim 5 is characterized in that: described colimated light system is off axis paraboloid mirror parallel light tube, refraction type parallel light tube or telescope optical system.
7, a kind of parasitic light PST optical detection system that contains the described standard star optical simulator of claim 1 is characterized in that: described optical detection system comprises standard star optical simulator, objective table and photodetector, light trapping; Described photodetector is arranged on the output light path of standard star optical simulator; Described objective table is arranged between photodetector and the standard star optical simulator.
8, the parasitic light PST optical detection system of standard star optical simulator according to claim 7 is characterized in that: described optical detection system also comprises light trapping, and described optical detection entire system places light trapping.
9, the parasitic light PST optical detection system of standard star optical simulator according to claim 8, it is characterized in that: described objective table is two-dimentional objective table.
10, according to the parasitic light PST optical detection system of claim 7 or 8 or 9 described standard star optical simulators, it is characterized in that: described photodetector is the high sensitivity photodetector.
11, the parasitic light PST optical detection system of standard star optical simulator according to claim 10, it is characterized in that: described light trapping is black cloth, light shield or camera bellows.
CNU2008201846046U 2008-12-17 2008-12-17 Standard starlight simulator and stray light PST optical detection system containing same Expired - Fee Related CN201348508Y (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116642B (en) * 2009-12-31 2012-08-08 北京控制工程研究所 Simulator of star sensor
CN103234734A (en) * 2013-04-09 2013-08-07 中国科学院西安光学精密机械研究所 Large-diameter stray light measuring device and testing method
CN104236553A (en) * 2014-09-10 2014-12-24 中国空间技术研究院 Autonomous all-weather stellar refraction satellite location method
CN105095608A (en) * 2015-09-21 2015-11-25 上海卫星工程研究所 Method for testing stray light of satellite
CN105606388A (en) * 2016-02-14 2016-05-25 长春理工大学 Split magnitude adjustable star map variable static star simulator having sky background
CN106289323A (en) * 2016-08-31 2017-01-04 上海航天控制技术研究所 The optical texture frock of the anti-Stray Light Test of star sensor and method of testing
CN108519054A (en) * 2018-04-24 2018-09-11 长春理工大学 The caliberating device and scaling method of arc-shaped infrared target simulator

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116642B (en) * 2009-12-31 2012-08-08 北京控制工程研究所 Simulator of star sensor
CN103234734A (en) * 2013-04-09 2013-08-07 中国科学院西安光学精密机械研究所 Large-diameter stray light measuring device and testing method
CN103234734B (en) * 2013-04-09 2016-06-08 中国科学院西安光学精密机械研究所 Heavy caliber Stray Light Test device and method of testing
CN104236553A (en) * 2014-09-10 2014-12-24 中国空间技术研究院 Autonomous all-weather stellar refraction satellite location method
CN104236553B (en) * 2014-09-10 2017-05-10 中国空间技术研究院 Autonomous all-weather stellar refraction satellite location method
CN105095608A (en) * 2015-09-21 2015-11-25 上海卫星工程研究所 Method for testing stray light of satellite
CN105095608B (en) * 2015-09-21 2018-08-03 上海卫星工程研究所 A kind of test method of satellite stray light
CN105606388A (en) * 2016-02-14 2016-05-25 长春理工大学 Split magnitude adjustable star map variable static star simulator having sky background
CN105606388B (en) * 2016-02-14 2018-05-08 长春理工大学 The variable static star simulator of the split type magnitude with sky background is adjustable star chart
CN106289323A (en) * 2016-08-31 2017-01-04 上海航天控制技术研究所 The optical texture frock of the anti-Stray Light Test of star sensor and method of testing
CN108519054A (en) * 2018-04-24 2018-09-11 长春理工大学 The caliberating device and scaling method of arc-shaped infrared target simulator
CN108519054B (en) * 2018-04-24 2019-12-17 长春理工大学 calibration device and calibration method for arc-shaped infrared target simulator

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091118

Termination date: 20151217

EXPY Termination of patent right or utility model