Study on the calculation and application for asphericity of rectangle off-axis aspherics

Jun-feng Li; Bin Xuan; Peng Wang; Xiao-ping Chen; Hong Zhang; Jing-jiang Xie; Shu-mei Song

doi:10.1117/12.830895

21 May 2009 Study on the calculation and application for asphericity of rectangle off-axis aspherics

Jun-feng Li, Bin Xuan, Peng Wang, Xiao-ping Chen, Hong Zhang, Jing-jiang Xie, Shu-mei Song

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 728221 (2009) https://doi.org/10.1117/12.830895
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

Asphericity which affects the manufacturing process and the grinding quantity is an important parameter of optical aspherics. In this paper, the approximation, the least square fitting, wavefront aberration, sag methods are given for the calculation of optical asphericity. The effects of different definitions of optical asphericity are analysed to optimize the process of manufacture. A sag method is presented to solve the best-fit sphere and asphericity for an off-aixs aspheric mirror with a rectangle aperture of 180mm×145mm, and polishing quantity and distribution plots are given. The optical manufacturing and testing technology for different choices of best-fit spheres and asphericity are described and analyzed. Therefore, proper definition of optical asphericity which is useful to manufacturing is very important for optical fabrication and test.

Citation Download Citation

Jun-feng Li, Bin Xuan, Peng Wang, Xiao-ping Chen, Hong Zhang, Jing-jiang Xie, and Shu-mei Song "Study on the calculation and application for asphericity of rectangle off-axis aspherics", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728221 (21 May 2009); https://doi.org/10.1117/12.830895

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