Testing asphere by subaperture stitching interferometric method

WANG Xiao-kun; WANG Li-hui; ZHANG Xue-jun

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Testing asphere by subaperture stitching interferometric method

更新时间：2020-08-12

- Testing asphere by subaperture stitching interferometric method
- Optics and Precision Engineering Vol. 15, Issue 2, Pages: 192-198(2007)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：
  CLC： O436.1;TQ171.6+5
- Received：22 July 2006，
  
  Revised：18 December 2006，
  
  Published Online：20 February 2007，
  
  Published：20 February 2007
- 稿件说明：
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WANG Xiao-kun, WANG Li-hui, ZHANG Xue-jun. Testing asphere by subaperture stitching interferometric method[J]. Optics and precision engineering, 2007, 15(2): 192-198.
DOI：

WANG Xiao-kun, WANG Li-hui, ZHANG Xue-jun. Testing asphere by subaperture stitching interferometric method[J]. Optics and precision engineering, 2007, 15(2): 192-198. DOI：

摘要

介绍了子孔径拼接干涉检测非球面的理论和方法

分析了其基本原理

基于齐次坐标变换、最小二乘法和Zernike多项式拟合建立了一种合理的拼接算法和数学模型。对一抛物面镜进行了五个子孔径的计算机模拟拼接实验

拼接前后全孔径面形误差分布是一致的

其PV值和RMS值的偏差分别为-0.009 2 λ和0.0013 λ;全口径相位分布的PV值和RMS值的相对误差分别为-0.39%和0.44%。实验结果表明

利用子孔径拼接技术不需要零位补偿就能实现对较大口径非球面的测量。

Abstract

A subaperture stitching interferometric method was introduced

and the basic principle was analyzed. A reasonable mathematical model and a effective stitching algorithm were established based on homogeneous coordinates transformation

least square method and Zernike polynomial fitting. Meanwhile the computer simulation experiment was carried on with five subapertures for a parabolic mirror

the phase map after stitching is consistent to the inputed map

the difference of the PV and RMS of the full aperture surface error is -0.009 2 λ and 0.0013 λ after stitching

and the relative error of PV and RMS is -0.39% and 0.44%

respectively. The results show that the method is feasible and accurate

and can test large aspheric surfaces without compensators and other auxiliary null optics.

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Keywords

references

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