Study on the Surface Figure Changes or primary Mirror Centerally Supported Under Gravity Load

Wu Qingwen; Lu E; Wang Jiaqi; Zhang Xuejun; Niu Xiaoming

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Study on the Surface Figure Changes or primary Mirror Centerally Supported Under Gravity Load

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- Study on the Surface Figure Changes or primary Mirror Centerally Supported Under Gravity Load
- Optics and Precision Engineering Vol. 4, Issue 4, Pages: 23-28(1996)
- 作者机构：
  
  中国科学院长春光学精密机械研究所长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：13 February 1996，
  
  Published Online：15 August 1996，
  
  Published：15 August 1996
- 稿件说明：
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吴清文, 卢锷, 王家骐, 张学军, 牛晓明. 自重作用下中心支撑主反射镜面形变化研究[J]. 光学精密工程, 1996,(4): 23-28

Wu Qingwen, Lu E, Wang Jiaqi, Zhang Xuejun, Niu Xiaoming. Study on the Surface Figure Changes or primary Mirror Centerally Supported Under Gravity Load[J]. Editorial Office of Optics and Precision Engineering, 1996,(4): 23-28
吴清文, 卢锷, 王家骐, 张学军, 牛晓明. 自重作用下中心支撑主反射镜面形变化研究[J]. 光学精密工程, 1996,(4): 23-28 DOI：

Wu Qingwen, Lu E, Wang Jiaqi, Zhang Xuejun, Niu Xiaoming. Study on the Surface Figure Changes or primary Mirror Centerally Supported Under Gravity Load[J]. Editorial Office of Optics and Precision Engineering, 1996,(4): 23-28 DOI：

摘要

利用FEM研究了弯月形主反射镜中心支撑条件下自重所引起的面形变化

通过计算所得镜面变形的PV值和RMS值来评价是否超差

利用Zernike多项式进行数据处理

分解出中心支撑方式下自重引起的像差成份

并相应地提出了提高成像质量的改进措施.最后进行了主反射镜背部形状优化.

Abstract

The surface figure changes of menisctls primary mirror

centrally supported and loadedby the gravity(1g)

are studied. The PV and RMS values are used to determine whether thedeformation is reasonable or not. Data processing is done with the help of zernikepolynomials

the aberration composition of the mirror Supported in this way is found'

andsome approaches to improve image quality are carried out. At last the rear profile of themirror is optimized.

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