用于超低温环境的轻质反射镜制造技术

陈亚; 宋淑梅; 宣斌; 谢京江

Volume 3 Issue 5

Nov. 2010

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Chinese Optics > 2010 > 3(5): 494-499.

CHEN Ya, SONG Shu-mei, XUAN Bin, XIE Jing-jiang. Manufacturing technologies of lightweighted mirror applied to vacuum cryogenic environment[J]. Chinese Optics, 2010, 3(5): 494-499.

Citation:

CHEN Ya, SONG Shu-mei, XUAN Bin, XIE Jing-jiang. Manufacturing technologies of lightweighted mirror applied to vacuum cryogenic environment[J]. Chinese Optics, 2010, 3(5): 494-499.

CHEN Ya, SONG Shu-mei, XUAN Bin, XIE Jing-jiang. Manufacturing technologies of lightweighted mirror applied to vacuum cryogenic environment[J]. Chinese Optics, 2010, 3(5): 494-499.

Citation:

CHEN Ya, SONG Shu-mei, XUAN Bin, XIE Jing-jiang. Manufacturing technologies of lightweighted mirror applied to vacuum cryogenic environment[J]. Chinese Optics, 2010, 3(5): 494-499.

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Manufacturing technologies of lightweighted mirror applied to vacuum cryogenic environment

Key Laboratory of Optical System Advanced Manufacturing Technology,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033 China

Received Date: 11 May 2010
Rev Recd Date: 19 Jul 2010
Publish Date: 25 Oct 2010

Abstract

Abstract

The design and manufacture of an elliptic mirror used in remote sensing was described in detail. How to choose the materials of a lightweighted mirror was discussed and the applications of the mirror to vacuum cryogenic environments were introduced. Based on the analyses of effects of different shapes of lightweighting holes, the structure of mirror was designed. By supporting the mirror with a belt hanging system, the gravity effect and the ultra low temperature effect were analyzed with a finite-element software. Furthermore, the practical lightweighting manufacture was carried out in the routing function of a computerized numerical control machining system, and the lightweighting ratio of elliptic mirror obtained has exceeded 33%. In order to eliminate the residual stress and microcracks introduced in the process, the mirror was disposed by a chemistry etching, and processed by a zone polishing machine on local. Results show that the surface error after polishing reaches 0.022(rms, =633 nm). The experiment of temperature variation was done in a small range and the change of surface error is 0.03 nm.
- lightweighted mirror,
- ultra-low temperature,
- lightweighting,
- computerized numerical control

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References

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