Design of null compensator for Ф1.5m primary mirror

Xiaohui Meng; Jiyou Zhang; Yonggang Wang; Lingdi Xu; Wen Guo; Zhao Jin

doi:10.1117/12.975211

15 October 2012 Design of null compensator for Φ1.5m primary mirror

Xiaohui Meng, Jiyou Zhang, Yonggang Wang, Lingdi Xu, Wen Guo, Zhao Jin

Proceedings Volume 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 84171X (2012) https://doi.org/10.1117/12.975211
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

The null compensator is the most commonly used method in the large aperture aspheric mirrors manufacturing and testing process. Combining the testing equipment which have already existed, spherical wave compensator and plane wave compensator are need to be designed separately in the practical application. Based on the third-order aberration theory, the equations of two-1ens compensators for 1.5m, F/1.33 hyperboloid concave mirror are deduced, and two different kind design methods for two-lens compensator are obtained. The optimized compensate system achieve the accuracy of 0.0025λ (PV) and 0.0007λ (RMS) by using the optical simulation analysis software. At last, the manufacturing tolerance and compensating range are analyzed, and the result of which indicates that the optimized result are rational and reliable, and it can fulfill the requirement of manufacturing and testing process for aspheric mirrors, meanwhile, the design can lay a theoretical foundation for the null test of larger F/# primary mirror.

Citation Download Citation

Xiaohui Meng, Jiyou Zhang, Yonggang Wang, Lingdi Xu, Wen Guo, and Zhao Jin "Design of null compensator for Φ1.5m primary mirror", Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84171X (15 October 2012); https://doi.org/10.1117/12.975211

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