A comprehensive evaluation method for optical properties of semi-ellipsoid reflecting surfaces
A technology for comprehensive evaluation and optical performance, applied in the direction of testing optical performance, etc., can solve the problems of limited component optical performance improvement and popularization, lack of comprehensive evaluation methods, etc., to achieve the effect of low implementation cost, easy operation, and improved measurement accuracy
Active Publication Date: 2021-11-05
NORTHWEST INST OF NUCLEAR TECH
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[0004] In general, the standard detection methods currently available for the sub-indicators of the performance of semi-ellipsoidal reflective surfaces have their own limitations, and the comprehensive evaluation methods are even more lacking, which limits the improvement and popularization of optical performance of this type of components.
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[0031] The present invention proposes a comprehensive evaluation method for the optical performance of the semi-ellipsoidal reflective surface, which can achieve the purpose of comprehensively evaluating the optical performance of this type of element. A method for measuring the power of concentrated light, especially grazing incidence and out-of-focus concentrated light.
[0032] 1. Overall surface shape detection method
[0033] Such as figure 1 As shown, the diffuse transmission plate 2 and the first camera 3 are respectively placed at the focal points A and B; the beam-expanded and collimated laser light 4 is split by the beam splitter 5, and the light reflected by the beam splitter enters the diffuse transmission plate 2 and is scattered After arriving at the semi-ellipsoid reflective surface 1, it is reflected by the semi-ellipsoid reflective surface 1 and converged to the first camera 3; the second camera 6 is placed on the optical path of the beam splitter mirror and ...
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The invention proposes a comprehensive evaluation method for the optical performance of the semi-ellipsoid reflective surface. The method includes overall surface shape detection and reflectivity measurement; where the overall surface shape detection is mainly to place a diffuse transmission plate and a first camera at the focal points A and B of the semi-ellipsoid; the laser beam that has been expanded and collimated is split by a beam splitter , the light reflected by the beam splitter is incident on the diffuse transmission plate, and reaches the semi-ellipsoid reflective surface after being scattered, and is reflected by the semi-ellipsoid reflective surface and converges to the first camera; Put the second camera; the second camera and the first camera respectively shoot the incident light spot and the conjugate image of the light spot; compare the incident light spot and its conjugate image, and evaluate the surface shape accuracy and surface roughness according to the degree of distortion and blur of the conjugate image; Rativity measurements include local reflectivity measurements and total reflectivity measurements. The invention has the advantages of high detection efficiency, low implementation cost, easy operation, anti-interference, comprehensive system and the like.
Description
technical field [0001] The invention belongs to the technical field of optical testing, and relates to a method for comprehensively evaluating the optical performance of a semi-ellipsoid reflecting surface, and is especially suitable for comprehensively evaluating the optical properties of a large-diameter semi-ellipsoid reflecting surface such as the overall surface shape and reflection characteristics. Background technique [0002] The semi-ellipsoidal reflector has a unique spatial structure, and its conjugate properties can be used to improve the performance of the optical system and simplify the structure of the instrument, so it has a good application prospect. According to the working principle of the semi-ellipsoid reflective surface, the surface shape accuracy, surface roughness, and film reflection characteristics of the reflective surface are important indicators to determine its application effect. [0003] The semi-ellipsoid reflector belongs to the category of ...
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IPC IPC(8): G01M11/02
CPCG01M11/02
Inventor 吴丽雄王立君刘峰王家伟韦成华
Owner NORTHWEST INST OF NUCLEAR TECH