Support system study of rectangular mirror

	Support system study of rectangular mirror
	Li, H.; Y. Ding and H. Zhang
	2015
发表期刊	Guangxue Xuebao/Acta Optica Sinica
卷号	35 期号:5
摘要	Support system design for large size rectangular mirror is one of the most challenging technical points during development of off-axis three-mirror anastigmatism (TMA) optical imaging sensor. The rectangular third mirror with the size of 760 mm320 mm is the study object. Key mechanism of the temperature effect on the mirror's optical surface deformation is studied thoroughly. The relationships between temperature range and the mirror blank's and back support part's linear expansion coefficient difference, mirror blank's capacity on interface mechanical load, rigidity of the flex structure which connects mirror blank and back support part, are established. During development of the mirror support system, a two-axis flex support structure which is composed of two perpendicular single axis circular flexures is proposed, and finite element analysis (FEA) is also employed to evaluate the mirror's optical surface error and model frequency of this mirror sub-assembly. In the mean time, sine scan test is used to verify the FEA result of mirror sub-assembly's model frequency. Under combination of 1g self gravity load and 10 temperature variation, the maximum FEA value of the mirror optical surface root-meansquare(RMS) error is 13.4 nm, and it meets the proposed requirement /45 (=632 nm). FEA result and test value of the lowest model frequency of the mirror sub-assembly are 128.67 Hz and 124.1 Hz, respectively, it is higher than the proposed requirement of 100 Hz and meets design objective. , 2015, Chinese Optical Society. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56168
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, H.,Y. Ding and H. Zhang. Support system study of rectangular mirror[J]. Guangxue Xuebao/Acta Optica Sinica,2015,35(5).
APA	Li, H.,&Y. Ding and H. Zhang.(2015).Support system study of rectangular mirror.Guangxue Xuebao/Acta Optica Sinica,35(5).
MLA	Li, H.,et al."Support system study of rectangular mirror".Guangxue Xuebao/Acta Optica Sinica 35.5(2015).

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