Multi-beam array stitching method based on scanning Hartmann for imaging quality evaluation of large space telescopes

doi:10.1038/s41598-018-25632-0

CIOMP OpenIR

	Multi-beam array stitching method based on scanning Hartmann for imaging quality evaluation of large space telescopes
	Wei, H. S.; Hu, H. X.; Yan, F.; Chen, X. D.; Cheng, Q.; Xue, D. L.; Zhang, X. J.
	2018
发表期刊	Scientific Reports
ISSN	2045-2322
卷号	8 页码:11
摘要	To test large-aperture space optical systems in a simple and highly efficient manner, the scanning Hartmann test (SHT) has been used to measure the sub-aperture wavefront slopes of optical systems by scanning with a collimated beam followed by retrieval of the overall wavefront form. However, the use of such a method contains a crucial flaw in that pointing errors of the translation stage can severely affect the test accuracy. Therefore, a multi-beam stitching method is proposed to correct pointing errors by stitching together data obtained by successive sub-aperture acquisition. In this paper, a test principle and a data processing method are detailed. Simulation results theoretically verify a high precision for the stitching algorithm. Furthermore, a multi-beam array stitching test system (MASTS) is developed and used to successfully test an actual space optical system of phi 800 mm. The MASTS shows a deviation of 1/50 lambda (lambda = 632.8 nm) root mean square (RMS) from the interferometric results and a repeatability of 1/80. RMS, which demonstrates high precision, high repeatability and low sensitivity to air turbulence compared to interferometric measurement. In future engineering applications, the MASTS has great potential to solve the test problems of space optical systems using ultra-large apertures.
关键词	system mirrors head Science & Technology - Other Topics
DOI	10.1038/s41598-018-25632-0
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60729
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	Wei, H. S.,Hu, H. X.,Yan, F.,et al. Multi-beam array stitching method based on scanning Hartmann for imaging quality evaluation of large space telescopes[J]. Scientific Reports,2018,8:11.
APA	Wei, H. S..,Hu, H. X..,Yan, F..,Chen, X. D..,Cheng, Q..,...&Zhang, X. J..(2018).Multi-beam array stitching method based on scanning Hartmann for imaging quality evaluation of large space telescopes.Scientific Reports,8,11.
MLA	Wei, H. S.,et al."Multi-beam array stitching method based on scanning Hartmann for imaging quality evaluation of large space telescopes".Scientific Reports 8(2018):11.

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