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Deformation verification and surface improvement of active stressed lap for 4 m-class primary mirror fabrication
Zhao, Hongshen; Li, Xiaojin; Fan, Bin; Zeng, Zhige; Zhao, HS (reprint author), Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China.
Source PublicationApplied Optics
Volume54Issue:10Pages:2658-2664
2015
Language英语
ISSN1559-128X
DOI10.1364/AO.54.002658
Indexed BySCI ; Ei
WOS IDWOS:000352152400016
Subtype期刊论文
AbstractThe 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; 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
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7042
Collection先光中心
Corresponding AuthorZhao, HS (reprint author), Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China.
Affiliation1.[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
GB/T 7714
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.
APA Zhao, Hongshen,Li, Xiaojin,Fan, Bin,Zeng, Zhige,&Zhao, HS .(2015).Deformation verification and surface improvement of active stressed lap for 4 m-class primary mirror fabrication.Applied Optics,54(10),2658-2664.
MLA Zhao, Hongshen,et al."Deformation verification and surface improvement of active stressed lap for 4 m-class primary mirror fabrication".Applied Optics 54.10(2015):2658-2664.
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