28 August 1998 Sol-gel coating of composite mirrors to provide a surface for optical figuring
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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.
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Patrick M. Woida, Patrick M. Woida, William F. Hoffmann, William F. Hoffmann, } "Sol-gel coating of composite mirrors to provide a surface for optical figuring", Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); doi: 10.1117/12.324452; https://doi.org/10.1117/12.324452
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