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

文献类型：期刊论文

作者Hu, Haixiang; Qi, Erhui; Luo, Xiao; Zhang, Xuejun; Xue, Donglin
刊名Applied Optics
出版日期2018
卷号57期号:34页码:F37-F43
关键词Fabrication Ion beams Mirrors Optical telescopes Optical testing Polishing
ISSN号1559128X
DOI10.1364/AO.57.000F37
英文摘要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.
源URL[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.

入库方式： OAI收割

来源：长春光学精密机械与物理研究所

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