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Proceedings Paper

A best-fit sphere definition capable of reducing dynamic range in aspheric surface testing
Author(s): Feng Xie; Qun Hao; Qiudong Zhu; Lei Tang; Yao Hu
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Paper Abstract

In order to fit the requirements of aspheric surface testing, a new best-fit sphere definition is proposed. The application and importance of the best-fit sphere definition in aspheric surface testing are analyzed. According to mass simulations, the characteristics of the best-fit sphere are analyzed, and the formulas of its sphere center and radius are given. The analysis indicates that the best-fit sphere definition is directly relative to the manufacture difficulty of CGH and the testing difficulty of aspheric surface to represent the testing difficulty of aspheric surface and reduce the testing dynamic range, and is beneficial to reduce the testing error of laser deflectometry and expand testing range.

Paper Details

Date Published: 9 November 2010
PDF: 7 pages
Proc. SPIE 7849, Optical Design and Testing IV, 784917 (9 November 2010); doi: 10.1117/12.869028
Show Author Affiliations
Feng Xie, Beijing Institute of Technology (China)
Qun Hao, Beijing Institute of Technology (China)
Qiudong Zhu, Beijing Institute of Technology (China)
Lei Tang, Beijing Institute of Technology (China)
Beijing Institute of Special Electromechanical Technology (China)
Yao Hu, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 7849:
Optical Design and Testing IV
Yongtian Wang; Julie Bentley; Chunlei Du; Kimio Tatsuno; Hendrik P. Urbach, Editor(s)

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