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Proceedings Paper

Fabrication of large off-axis asymmetry aspherics using stressed lap with orbital tool motion
Author(s): Xiao Luo; Ligong Zheng; Xuejun Zhang
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Paper Abstract

The stressed-lap technique has been proven to be an effective method to meet the challenge of polishing large mirrors with highly aspheric figures. It has the advantage of high material removal and strong natural smoothing tendency over a wide range of spatial frequencies, only round mirrors could be processed with this technology. A solution is put forward in this paper by applying the CCOS (Computer controlled optical surfacing) removing strategy into the stressed lap technology, employing the stressed lap as the removing tool but moving the lap in the CCOS fashion, naming the stressed lap with orbital motion. With the new technology, almost any shape of mirror could be processed, the figuring ability could be improved and the changing rate of the force imposed on the lap turn out to be only 1/6 of the stressed lap with spinning motion based on simulation results, which conducing a lower response requirement of the lap with orbital motion.

Paper Details

Date Published: 14 October 2010
PDF: 6 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 765408 (14 October 2010); doi: 10.1117/12.866652
Show Author Affiliations
Xiao Luo, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate Univ. of Chinese Academy of Science (China)
Ligong Zheng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate Univ. of Chinese Academy of Science (China)
Xuejun Zhang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate Univ. of Chinese Academy of Science (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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