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Proceedings Paper

The application of pentaprism scanning technology on the manufacturing of M3MP
Author(s): Erhui Qi; Haixiang Hu; Haifei Hu; Glen Cole; Xiao Luo; Virginia Ford; Xuejun Zhang
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Paper Abstract

The PSS (pentaprism scanning system) has advantages of simple structure, needless of reference flat, be able of on-site testing, etc, it plays an important role in large flat reflective mirror’s manufacturing, especially the high accuracy testing of low order aberrations. The PSS system measures directly the slope information of the tested flat surface. Aimed at the unique requirement of M3MP, which is the prototype mirror of the tertiary mirror in TMT (Thirty Meter Telescope) project, this paper analyzed the slope distribution of low order aberrations, power and astigmatism, which is very important in the manufacturing process of M3MP. Then the sample route lines of PSS are reorganized and new data process algorism is implemented. All this work is done to improve PSS’s measure sensitivity of power and astigmatism, for guiding the manufacturing process of M3MP.

Paper Details

Date Published: 24 October 2016
PDF: 7 pages
Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96821A (24 October 2016); doi: 10.1117/12.2245813
Show Author Affiliations
Erhui Qi, Changchun Institute of Optics (China)
Haixiang Hu, Changchun Institute of Optics (China)
Haifei Hu, Changchun Institute of Optics (China)
Univ. of Chinese Academy of Sciences (China)
Glen Cole, Thirty Meter Telescope (United States)
Xiao Luo, Changchun Institute of Optics (China)
Virginia Ford, Thirty Meter Telescope (United States)
Xuejun Zhang, Changchun Institute of Optics (China)


Published in SPIE Proceedings Vol. 9682:
8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Myung K. Cho; Bin Fan, Editor(s)

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