Large-diameter mirror stitching accuracy analysis based on self-test

Yan Lisong; Wang Xiaokun; Zheng Ligong; Wang Runqiang; Zhang Xuejun

In order to solve the problem evaluating the stitching accuracy of large-diameter reflecting mirror, a kind of stitching accuracy evaluating method called self-test was proposed in the article, realizing the analysis and evaluation to the stitching accuracy of large-diameter reflector mirror, while providing a method measuring the stitching precision. Self-test was a kind of method testing the accuracy of stitching result with sub-aperture measuring result. In the article, relative accuracy evaluation indexes and their calculation methods were discussed. As a project example, 800 mm plane mirror was splicing measured with a 600 mm interferometer and stitching accuracy was evaluated with the self-test method. It shows that the stitching is accurate and it's reliable and precise to assess stitching accuracy by the way of self-test at the same time.

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

2. University of Chinese Academy of Sciences,Beijing 100049,China;

3. Changchun UP Optotech Co.Ltd,Changchun 130033,China

Received Date: 2013-10-05

Rev Recd Date: 2013-11-03

Publish Date: 2014-06-25

Key words:

Abstract: In order to solve the problem evaluating the stitching accuracy of large-diameter reflecting mirror, a kind of stitching accuracy evaluating method called self-test was proposed in the article, realizing the analysis and evaluation to the stitching accuracy of large-diameter reflector mirror, while providing a method measuring the stitching precision. Self-test was a kind of method testing the accuracy of stitching result with sub-aperture measuring result. In the article, relative accuracy evaluation indexes and their calculation methods were discussed. As a project example, 800 mm plane mirror was splicing measured with a 600 mm interferometer and stitching accuracy was evaluated with the self-test method. It shows that the stitching is accurate and it's reliable and precise to assess stitching accuracy by the way of self-test at the same time.

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Reference (15)

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Large-diameter mirror stitching accuracy analysis based on self-test

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