Grinding and polishing technology by computer controlled active lap for &#934;1250mmF/1.5 aspheric mirror

Bin Fan; Zhige Zeng; Xiaojin Li; Qiang Chen; Pingqi Gao; Jiabin Zhou; Yongjian Wan

doi:10.1117/12.883418

13 October 2010 Grinding and polishing technology by computer controlled active lap for Φ1250mmF/1.5 aspheric mirror

Bin Fan, Zhige Zeng, Xiaojin Li, Qiang Chen, Pingqi Gao, Jiabin Zhou, Yongjian Wan

Proceedings Volume 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 765409 (2010) https://doi.org/10.1117/12.883418
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

For large aspheric optical elements, Computer Controlled Active Lap(CCAL) manufacturing which developed in IOE (Institute of Optics and Electronics, Chinese Academy of Science), have some advantages such as higher manufacturing efficiency, lower middle-frequency and high-frequency errors comparing the fixed lapping technology and CCOS(Computer Controlled Optical Surface) technology. A paraboloid surface of Φ1250mmF/1.5 was grinded by the active lap bonded with ceramic pills, as well as polished will pitch bonded active lap. During polishing processing a null lens was designed to test the paraboloid surface, the final testing data of RMS with ZYGO interferometer reached to 0.027λ(λ=0.6328μm).

Citation Download Citation

Bin Fan, Zhige Zeng, Xiaojin Li, Qiang Chen, Pingqi Gao, Jiabin Zhou, and Yongjian Wan "Grinding and polishing technology by computer controlled active lap for Φ1250mmF/1.5 aspheric mirror", Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 765409 (13 October 2010); https://doi.org/10.1117/12.883418

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