Active Optics and Aberration Correction Technology for Sparse Aperture Segmented Mirrors

doi:10.3390/app13064063

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	Active Optics and Aberration Correction Technology for Sparse Aperture Segmented Mirrors
	B. L. Zhang, F. Yang, F. G. Wang and B. W. Lu
	2023
发表期刊	Applied Sciences-Basel
卷号	13 期号:6 页码:17
摘要	Active optics and aberration correction techniques for sparse aperture segmented mirrors are studied. A finite element model of the sparse aperture segmented mirror was established, and a multi-aperture aberration polynomial was derived. According to the hard spot theorem, a co-phase maintenance method based on the change of the edge sensor position in the conventional mode is derived. And a co-phase maintenance method based on the change of the aberration of the segmented mirror surface without the participation of the edge sensor is proposed. The method can correct aberrations of the segmented mirror surface, which are caused by the rigid body displacement along the horizontal direction of the segments. This method can reduce the RMS of the segmented mirror surface to 2.2 nm. The correction principle of the Warping Harness (WH) technique is derived. For the problems of tedious steps and a small number of target aberrations, the correction method is proposed to directly target the aberrations of the segmented mirrors, which is simple and has a wider range of target aberrations. Using this method, the amplitude of each aberration of the stitched mirror is corrected to below 10(-4)nm. It is also verified that combining the generalized ridge estimation method and the differential evolution algorithm can effectively solve the correction quantity. Finally, it is verified that the SiC material can effectively improve the adaptability of the segmented mirror to gravity load by reducing the mirror's weight.
DOI	10.3390/app13064063
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收录类别	sci
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68146
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	B. L. Zhang, F. Yang, F. G. Wang and B. W. Lu. Active Optics and Aberration Correction Technology for Sparse Aperture Segmented Mirrors[J]. Applied Sciences-Basel,2023,13(6):17.
APA	B. L. Zhang, F. Yang, F. G. Wang and B. W. Lu.(2023).Active Optics and Aberration Correction Technology for Sparse Aperture Segmented Mirrors.Applied Sciences-Basel,13(6),17.
MLA	B. L. Zhang, F. Yang, F. G. Wang and B. W. Lu."Active Optics and Aberration Correction Technology for Sparse Aperture Segmented Mirrors".Applied Sciences-Basel 13.6(2023):17.

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