@inproceedings{795416cbd3f7411c98d7f9d54a3f8759,
title = "A best-fit sphere definition capable of reducing dynamic range in aspheric surface testing",
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.",
keywords = "CGH, aspheric surface, best-fit sphere, laser deflectometry, optical testing",
author = "Feng Xie and Qun Hao and Qiudong Zhu and Lei Tang and Yao Hu",
year = "2010",
doi = "10.1117/12.869028",
language = "English",
isbn = "9780819483799",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Optical Design and Testing IV",
note = "Optical Design and Testing IV ; Conference date: 18-10-2010 Through 20-10-2010",
}