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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, Hongshen; Li, Xiaojin; Fan, Bin; Zeng, Zhige
刊名: Applied Optics
出版日期: 2015
卷号: 54, 期号:10, 页码:2658-2664
DOI: 10.1364/AO.54.002658
通讯作者: Zhao, HS (reprint author), Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China.
文章类型: 期刊论文
中文摘要: 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
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
收录类别: SCI ; Ei
项目资助者: National Natural Science Foundation of China [61178043]
语种: 英语
WOS记录号: WOS:000352152400016
ISSN号: 1559-128X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7042
Appears in Collections:先光中心_期刊论文

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作者单位: 1.[Zhao, Hongshen
2.Li, Xiaojin
3.Fan, Bin
4.Zeng, Zhige] Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
5.[Zhao, Hongshen] 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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