Sol-gel coating of composite mirrors to provide a surface for optical figuring

Details Sol-gel coating of composite mirrors to provide a surface for optical figuring Sol-gel coating of composite mirrors to provide a surface for optical figuring

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3356..946w&link_type=abstract

Proc. SPIE Vol. 3356, p. 946-950, Space Telescopes and Instruments V, Pierre Y. Bely; James B. Breckinridge; Eds.

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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.

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