Simulation and validation of a prototype swing arm profilometer for measuring extremely large telescope mirror-segments

被引：37
作者：
Jing, Hongwei [1 ]
King, Christopher [2 ]
Walker, David [2 ]
机构：
[1] Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
[2] Univ Coll London, Natl Facil Ultraprecis Surfaces, OpTIC Technium, St Asaph LL17 0JD, North Wales, Wales
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
Telescopes; -; Interferometry; Profilometry;
D O I：
10.1364/OE.18.002036
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The Extremely Large Telescope (ELT) projects presuppose segmented primary mirrors. The metrology of the off-axis aspherical segments is particularly challenging in terms of global form, mid spatial frequencies and matching of the base-radius and conic constant. We propose to use a swing arm profilometer (SAP) to provide verification independent of interferometry. In this paper we present results of a simulation of the swing arm profilometer as applied to mirror segments, and experimental verification of the simulation using a prototype instrument. (C) 2010 Optical Society of America
引用
收藏
页码：2036 / 2048
页数：13
相关论文
共 14 条
[1]  
Anderson D.S., 1995, Proc. SPIE, P269
[2]  
Anderson D. S., 1990, P OF T WORKSH AC MON, V11, P119
[3]  
ANGEL JRP, 1982, P SOC PHOTO-OPT INST, V332, P316
[4]  
Astronet, 2008, ASTR INFR ROADM STRA
[5]  
EFSTATHIOU A, 2007, THESIS LONDON
[6]  
*ESO EUR ELT, 2009, EUR EXTR LARG TEL PR
[7]   Static tool influence function for fabrication simulation of hexagonal mirror segments for extremely large telescopes [J].
Kim, DW ;
Kim, SW .
OPTICS EXPRESS, 2005, 13 (03) :910-917
[8]  
Lewis A., 2008, UNCERTAINTY BUDGET N
[9]  
Lewis A., 2006, P S METR AC MEX, P101
[10]  
Malacara D., 1992, OPTICAL SHOP TESTING
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