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Proceedings Paper

Grinding and polishing technology by computer controlled active lap for Φ1250mmF/1.5 aspheric mirror
Author(s): Bin Fan; Zhige Zeng; Xiaojin Li; Qiang Chen; Pingqi Gao; Jiabin Zhou; Yongjian Wan
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Paper 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).

Paper Details

Date Published: 13 October 2010
PDF: 6 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 765409 (13 October 2010); doi: 10.1117/12.883418
Show Author Affiliations
Bin Fan, Institute of Optics and Electronics (China)
Zhige Zeng, Institute of Optics and Electronics (China)
Xiaojin Li, Institute of Optics and Electronics (China)
Qiang Chen, Institute of Optics and Electronics (China)
Pingqi Gao, Institute of Optics and Electronics (China)
Jiabin Zhou, Institute of Optics and Electronics (China)
Yongjian Wan, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 7654:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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