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Method for testing radiation characteristics of uniform light source

A technology of a uniform light source and a test device, applied in the field of optical testing, can solve the problems of difficulty in meeting the diameter of the exit surface of the uniform light source, the inability of the angular uniformity test device to be universal, and the size and weight, achieving fast measurement speed, saving test costs, and improving ease of use. usability effect

Pending Publication Date: 2020-09-15
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to test the uniformity of the existing ultra-large diameter (1m ~ 2m) uniform light source, the existing surface uniformity test device is complex in structure, bulky and heavy, and the angular uniformity test device cannot be used universally, the structure is complicated, and it is difficult to meet the requirements of uniformity. In order to meet the actual needs of the increasing diameter of the light source exit surface, a device and method for testing the radiation characteristics of a uniform light source are provided.

Method used

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  • Method for testing radiation characteristics of uniform light source
  • Method for testing radiation characteristics of uniform light source
  • Method for testing radiation characteristics of uniform light source

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Embodiment

[0082] The invention provides a specific structure of a uniform light source radiation characteristic testing device, such as image 3 As shown, it includes a support 1 , a lifting mechanism 2 , a lightweight crossbar 3 , a photodetector assembly 4 , a loading plate 5 and a signal processing and measurement control unit 6 .

[0083] Support 1 is a vertical gantry structure, comprising a horizontal support 11 and a vertical support 12 vertically arranged at the end of the horizontal support 11; signal processing and measurement control unit 6 are installed on the horizontal support 11, and such installation purpose is to make the whole device more Stable and reliable; in order to facilitate the horizontal adjustment of the whole device, the four corners of the horizontal support 11 are respectively provided with leveling bolts 13 .

[0084] The lifting mechanism 2 is arranged on the vertical support 12, and the lifting mechanism can adopt a chain structure, a transmission belt ...

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Abstract

The invention discloses a device and a method for testing radiation characteristics of a uniform light source. The device has a surface uniformity test function and an angle uniformity test function,has the advantages of simple structure, high measurement speed and high universality, and comprises a bracket, a lifting mechanism, a light cross rod, a plurality of photoelectric detector assembliesand a signal processing and measurement control unit. The lifting mechanism is connected with the bracket, the light cross rod is installed on the lifting mechanism, the photoelectric detector assemblies are installed on the light cross rod side by side, and the signal processing and measurement control unit is installed on the bracket. The test of the surface uniformity of the uniform light source is realized by adopting a longitudinal push-broom method of the transversely and uniformly distributed photoelectric detectors, and the test of the angle uniformity of the uniform light source is realized by adopting a method of the angularly and uniformly distributed photoelectric detectors.

Description

technical field [0001] The invention relates to the technical field of optical testing, in particular to a radiation characteristic testing device and method for a uniform light source. Background technique [0002] Uniform light source is an indispensable test equipment in the relative and absolute radiation calibration experiments of imaging cameras. The quality of its radiation characteristics directly affects the test accuracy, which in turn affects the correction level and accuracy of the tested camera. With the continuous improvement of the resolution of the space remote sensing camera, its aperture is also increasing. In order to meet the basic requirements of radiation calibration, the aperture of the uniform radiation source is also increasing, and the requirements for its radiation characteristics are also increasing. . [0003] With the continuous improvement of the output aperture of the uniform light source, it becomes more and more difficult to test its radiat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/02G01M11/0207
Inventor 昌明周艳刘锴李晶薛勋宋琦曹昆万伟赵怀学
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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