Rapid fabrication strategy for ∅1.5 m off-axis parabolic parts using computer-controlled optical surfacing

doi:10.1364/AO.57.000F37

CIOMP OpenIR

	Rapid fabrication strategy for ∅1.5 m off-axis parabolic parts using computer-controlled optical surfacing
	Hu, Haixiang; Qi, Erhui; Luo, Xiao; Zhang, Xuejun; Xue, Donglin
	2018
发表期刊	Applied Optics
ISSN	1559128X
卷号	57 期号:34 页码:F37-F43
摘要	Off-axis parabolic parts (OAPs) or quasi-OAPs are mostly frequently used in large optical telescopes. Compared to the stressed mirror polishing, computer-controlled optical surfacing (CCOS) or other computer-controlled subaperture tools provide more flexibility. However, the fabrication efficiency needs to be promoted in tactical ways. In this paper, we present a large aperture CCOS lap equipped with a compound motion unit and go through the grinding and pre-polishing with its figure errors. A CCOS-based heterocercal tool is first used in large optics to restrain the edge effects. In the fine polishing stage, corrective polishing, smoothing, and ion beam figuring are applied in combination to finish. We experimentally test this strategy on an 1.5 m OAP, as a part of giant steerable science mirror (GSSM) in the Thirty Meter Telescope. Finally, the surface error of 1.5 m OAP is better than 150 RMS (full aperture), and the mid-spatial frequency part is better than 0.64 rad in slope RMS (effective aperture). The effective fabrication duration is reduced to 2 months. 2018 Optical Society of America.
关键词	Fabrication Ion beams Mirrors Optical telescopes Optical testing Polishing
DOI	10.1364/AO.57.000F37
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/181722/61118
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	Hu, Haixiang,Qi, Erhui,Luo, Xiao,et al. Rapid fabrication strategy for ∅1.5 m off-axis parabolic parts using computer-controlled optical surfacing[J]. Applied Optics,2018,57(34):F37-F43.
APA	Hu, Haixiang,Qi, Erhui,Luo, Xiao,Zhang, Xuejun,&Xue, Donglin.(2018).Rapid fabrication strategy for ∅1.5 m off-axis parabolic parts using computer-controlled optical surfacing.Applied Optics,57(34),F37-F43.
MLA	Hu, Haixiang,et al."Rapid fabrication strategy for ∅1.5 m off-axis parabolic parts using computer-controlled optical surfacing".Applied Optics 57.34(2018):F37-F43.

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