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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 20 — Jul. 10, 2013
  • pp: 4797–4805

Quality evaluation of spaceborne SiC mirrors (I): analytical examination of the effects on mirror accuracy by variation in the thermal expansion property of the mirror surface

Masaki Kotani, Tadashi Imai, Haruyoshi Katayama, Yukari Yui, Yoshio Tange, Hidehiro Kaneda, Takao Nakagawa, and Keigo Enya  »View Author Affiliations


Applied Optics, Vol. 52, Issue 20, pp. 4797-4805 (2013)
http://dx.doi.org/10.1364/AO.52.004797


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Abstract

The Japan Aerospace Exploration Agency has studied a large-scale lightweight mirror constructed of reaction-bonded silicon carbide-based material as a key technology in future astronomical and earth observation missions. The authors selected silicon carbide as the promising candidate due to excellent characteristics of specific stiffness and thermal stability. One of the most important technical issues for large-scale ceramic components is the uniformity of the material’s property, depending on part and processing. It might influence mirror accuracy due to uneven thermal deformation. The authors conducted systematic case studies for the conditions of CTE by finite element analysis to know the typical influence of material property nonuniformity on mirror accuracy and consequently derived a comprehensive empirical equation for the series of CTE’s main factors. In addition, the authors computationally reproduced the mirror accuracy profile of a small prototype mirror shown in cryogenic testing and hereby verified wide-range practical computational evaluation technology of mirror accuracy.

© 2013 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(220.4840) Optical design and fabrication : Testing
(240.6700) Optics at surfaces : Surfaces
(350.4600) Other areas of optics : Optical engineering
(350.6090) Other areas of optics : Space optics

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 26, 2013
Revised Manuscript: May 29, 2013
Manuscript Accepted: May 29, 2013
Published: July 3, 2013

Citation
Masaki Kotani, Tadashi Imai, Haruyoshi Katayama, Yukari Yui, Yoshio Tange, Hidehiro Kaneda, Takao Nakagawa, and Keigo Enya, "Quality evaluation of spaceborne SiC mirrors (I): analytical examination of the effects on mirror accuracy by variation in the thermal expansion property of the mirror surface," Appl. Opt. 52, 4797-4805 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-20-4797

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