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题名:
Deformation verification and surface improvement of active stressed lap for 4 m-class primary mirror fabrication
作者: Zhao, Hongshen1,2; Li, Xiaojin1; Fan, Bin1; Zeng, Zhige1
刊名: APPLIED OPTICS
出版日期: 2015-04-01
卷号: 54, 期号:10, 页码:2658-2664
文章类型: Article
英文摘要: The surface shape accuracy of the active stressed lap impacts the performance of grinding and polishing in the fabrication of large mirrors. We introduce a model of active stressed lap for the fabrication of a 4 m f/1.5 mirror based on finite element analysis (FEA), and the lap surface accuracy achieves RMS < 1.8 mu m in the FEA method. Using the lap surface measurement system, experimental verification is put forward, and the RMS of the measured lap surface is within 2 mu m in practice. A general improvement in lap surface accuracy using the Zernike polynomial is shown. After compensating the calculation errors, the lap surface accuracy is improved by 8%-23%, and achieves RMS < 1.5 mu m, which is appropriate for practical grinding and polishing. (C) 2015 Optical Society of America
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: TOOL
收录类别: SCI
语种: 英语
WOS记录号: WOS:000352152400016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2547
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Zhao, Hongshen,Li, Xiaojin,Fan, Bin,et al. Deformation verification and surface improvement of active stressed lap for 4 m-class primary mirror fabrication[J]. APPLIED OPTICS,2015,54(10):2658-2664.
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