A best-fit sphere definition capable of reducing dynamic range in aspheric surface testing

Feng Xie; Qun Hao; Qiudong Zhu; Lei Tang; Yao Hu

doi:10.1117/12.869028

9 November 2010 A best-fit sphere definition capable of reducing dynamic range in aspheric surface testing

Feng Xie, Qun Hao, Qiudong Zhu, Lei Tang, Yao Hu

Proceedings Volume 7849, Optical Design and Testing IV; 784917 (2010) https://doi.org/10.1117/12.869028
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Feng Xie, Qun Hao, Qiudong Zhu, Lei Tang, and Yao Hu "A best-fit sphere definition capable of reducing dynamic range in aspheric surface testing", Proc. SPIE 7849, Optical Design and Testing IV, 784917 (9 November 2010); https://doi.org/10.1117/12.869028

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