Stock material or miscellaneous articles – Composite – Of silicon containing
Patent
1992-08-11
1995-12-05
Robinson, Ellis P.
Stock material or miscellaneous articles
Composite
Of silicon containing
428333, 428698, 428699, 428701, 428702, 4289088, 359359, 359360, B32B 904
Patent
active
054727871
ABSTRACT:
Coatings for a diamond surface of an optical element control reflections and oxidation at the surface. Transmissive element coatings effective in the infrared and at up to 800.degree. C. have a first layer of amorphous hydrogenated silicon deposited directly on the diamond and have a second layer of aluminum nitride, yttrium oxide, hafnium oxide or other refractory oxide deposited directly on the first layer. The first layer may be relatively thin and for adhesion only with the second layer constructed of an oxide and having a thickness selected to control reflection, or the thicknesses of both layers may be selected together to control reflection with the proportion of hydrogen in the first layer varied to select its refractive index.
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Johnson Linda F.
Klemm Karl A.
Moran Mark B.
Church Stephen J.
Forrest, Jr. John L.
Robinson Ellis P.
Sliwka Melvin J.
Speer Timothy M.
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