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PST test, extremely low object simulation system, and test method of PST and detection capability

A simulation system and test system technology, applied in the field of optical detection, can solve the problem of low-light star simulator affecting the cost and other issues

Pending Publication Date: 2018-10-19
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0008] In order to solve the problem that the lower limit of the PST test is difficult to break through at the present stage, and the low-light star simulator is affected by the test environment and the cost is high, the present invention provides a method that can realize the point source transmittance test of the detection camera lens and the system key index test. Very Weak Target Simulation System

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  • PST test, extremely low object simulation system, and test method of PST and detection capability
  • PST test, extremely low object simulation system, and test method of PST and detection capability

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Embodiment Construction

[0076] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0077] from figure 1 and Figure 4 It can be seen that the point source transmittance test and very weak target simulation system in this embodiment mainly includes a point source transmittance test system, a very weak target simulation system, a calibration system and a main control system;

[0078] from figure 2 It can be seen that the point source transmittance test system includes a laser light source system 1, a chopper 3, a collimator assembly 4, a receiving system 7, a detection system 8, a multi-degree-of-freedom turntable 6, a collimator low-pressure tank 9, Low pressure double-column tank 10 and lock-in amplifier 11;

[0079] The wavelength of the laser light source system 1 is 0.52μm, 0.66μm, 0.75μm but not limited to these wavelengths, the output power is ≥500mW, after beam shaping, the divergence angle matches the divergence an...

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Abstract

The invention relates to PST (point source transmittance) test, an extremely low object simulation system, and a test method of PST and detection capability. The system mainly comprises a point sourcetransmittance test system, the extremely low object simulation system, and a master control system; the point source transmittance test system and the extremely low object simulation system are combined, so that the universality of the main assemblies is achieved, and construction of a low pressure environment is adopted, so that the vacuum degree of the point source transmittance test system andthe extremely low object simulation system is reduced to 50Pa, the point source transmittance test lower limit reaches 10 to 15, and the extremely low object simulation lower limit reaches +18Mv; andinfluences of the environment on the two systems are avoided at a high degree.

Description

technical field [0001] The invention belongs to the field of optical detection, and relates to a point source transmittance test and an extremely weak target simulation system and a test method thereof, in particular to a test system and a test method for point source transmittance and limit detection capability parameters of a detection camera. Background technique [0002] The analysis work on point source transmittance (Points Source Transmittance) test of optical system started early in foreign countries. The Space Dynamics Laboratory of Utah State University established the PST test device Black Hole in the 1970s, and the PST can reach 10 -15 , reaching the Rayleigh scattering background. In 2008, Ball Aerospace & Technologies Corp of the United States developed a new type of stray light test system. This system requires a completely black experimental environment with a cleanliness level of five. The system measures 58 inches by 20 inches and has a double column. The ...

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Application Information

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IPC IPC(8): G01C25/00G01M11/02
CPCG01C25/00G01M11/00
Inventor 薛勋赵建科刘尚阔李坤曹昆昌明李晶张洁胡丹丹赛建刚王争锋宋琦鄂可伟徐亮
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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