Detection method of mirror seeing based on curvature/ slope hybrid sensing

doi:10.3788/IRLA20200419

CIOMP OpenIR

	Detection method of mirror seeing based on curvature/ slope hybrid sensing
	Q. An; X. Wu; J. Zhang; H. Li and L. Chen
	2021
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	50 期号:7
摘要	With the increase of aperture of optical elements, the influence of mirror seeing has become more and more difficult to ignore in the process of processing inspection and observation. For strong turbulence, slope detection is used to qualitatively analyze low order components. After the airflow is stable, curvature sensor can be used for fine measurement. After the slope detection, the back-end optical path of the autocollimator can be focused, and the system can be defocused to a certain amount (the defocusing direction of the two autocollimators is opposite), that is, the estimation of wavefront curvature can be obtained by the differential of wavefront along the optical axis. After obtaining the data, the results can be statistically analyzed based on point source sensitivity (PSSn) theory. Firstly, the basic method of curvature/slope hybrid sensing was deduced theoretically. The normalized PSSn was proposed by the US 30-meter telescope (TMT) to evaluate the overall performance, shape and distribution of systematic error and the change of mirror tranquility in the detection process were further analyzed with the PSSn as the evaluation index, the PSSn introduced by turbulence is 0.9718. The experimental results show that when the thermal disturbance flow field is relatively uniform, the influence of specular visibility on the flow field changes little with repeated changes. The work can quantitatively analyze the specular visibility of large-aperture optical elements, which is of great guiding significance for the optimization of large-aperture system design and detection processing. Copyright 2021 Infrared and Laser Engineering. All rights reserved.
DOI	10.3788/IRLA20200419
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收录类别	EI
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65168
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Q. An,X. Wu,J. Zhang,et al. Detection method of mirror seeing based on curvature/ slope hybrid sensing[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2021,50(7).
APA	Q. An,X. Wu,J. Zhang,&H. Li and L. Chen.(2021).Detection method of mirror seeing based on curvature/ slope hybrid sensing.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,50(7).
MLA	Q. An,et al."Detection method of mirror seeing based on curvature/ slope hybrid sensing".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 50.7(2021).

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