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Proceedings Paper

Sol-gel coating of composite mirrors to provide a surface for optical figuring
Author(s): Patrick M. Woida; William F. Hoffmann
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Paper Abstract

We have achieved reliable, repeatable coatings of solgel- deposited glass on Carbon Fiber Reinforced Plastic sandwich panel mirrors of sizes 10 to 90 cm. Very lightweight CFRP panels up to 2 meter size have been produced with high thermal and temporal stability, but replicated surface accuracy limited to millimeter applications. The solgel coatings of 20 to 200 micrometers thickness provide a surface which can be optically ground, polished, and figured to provide IR and optical quality mirrors. We have demonstrate this with both flat and concave spherical mirrors.

Paper Details

Date Published: 28 August 1998
PDF: 5 pages
Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); doi: 10.1117/12.324452
Show Author Affiliations
Patrick M. Woida, Steward Observatory/Univ. of Arizona (United States)
William F. Hoffmann, Steward Observatory/Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 3356:
Space Telescopes and Instruments V
Pierre Y. Bely; James B. Breckinridge, Editor(s)

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