Mapping distortion correction in freeform mirror testing by computer-generated hologram

doi:10.1364/ao.57.000f56

CIOMP OpenIR

	Mapping distortion correction in freeform mirror testing by computer-generated hologram
	Zeng, X. F.; Zhang, X. J.; Xue, D. L.; Zhang, Z. Y.; Jiao, J.
	2018
发表期刊	Applied Optics
ISSN	1559-128X
卷号	57 期号:34 页码:F56-F61
摘要	Distortion can be introduced in null testing using computer-generated holograms for off-axis aspheres or freeforms with significant deviation. It leads to the failure of testing results to guide deterministic optical processing. In this paper, based on ray tracing and calibration marks applied to a mirror surface, a high-accuracy method is proposed to correct the distortion. The correction error is less than 1 mm. Second and fourth mirrors of a reflective telescope prototype with an F number of 6.5 and field of view of 76 degrees are polished. In the process, distortion is corrected, and the position misalignment error is as small as 0.783 mm. For the sake of alignment, the two mirrors are fixed on a 790 mm x 390 mm SiC substrate. The root-mean-square value of the mirror surface error is 0.0433 lambda (lambda = 0.6328 mu m) after ion beam finishing. (C) 2018 Optical Society of America
关键词	cgh Optics
DOI	10.1364/ao.57.000f56
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61052
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	Zeng, X. F.,Zhang, X. J.,Xue, D. L.,et al. Mapping distortion correction in freeform mirror testing by computer-generated hologram[J]. Applied Optics,2018,57(34):F56-F61.
APA	Zeng, X. F.,Zhang, X. J.,Xue, D. L.,Zhang, Z. Y.,&Jiao, J..(2018).Mapping distortion correction in freeform mirror testing by computer-generated hologram.Applied Optics,57(34),F56-F61.
MLA	Zeng, X. F.,et al."Mapping distortion correction in freeform mirror testing by computer-generated hologram".Applied Optics 57.34(2018):F56-F61.

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