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Low CTE glass, SiC & Beryllium for lightweight mirror substrates

文献类型: 会议论文

第一作者: Roland Geyl

作者: Roland Geyl 1 ; Marc Cayrel 1 ;

作者机构: 1.SAGEM Optronics & AirLand Systems-REOSC High Performance Optics Avenue de la Tour Maury -91280 Saint Pierre du Perray, France

关键词: Gemini;GAIA;GTC;Zerodur;SiC;Beryllium;large optics;aspheric;secondary mirror;lightweight

会议名称: Optical fabrication, testing, and metrology II :

主办单位:

页码: 461-467

摘要: This paper is intended to analyze the relative merits of low CTE glass, SiC and Beryllium as candidates for lightweight mirror substrates in connection with real practical experience and example or three major projects using these three materials and running presently at SAGEM-REOSC. Beryllium and SiC have nice thermal and mechanical properties but machined glass ceramic can still well compete technically or economically in some cases.

分类号: N5

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