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AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsLinda F. Johnson, Karl A. Klemm, Mark B. Moran
Estimating the term…
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.
An optical element comprising
In an optical element having a diamond surface, the improvement comprising a coating for controlling reflection of radiation incident on said diamond surface, said coating including a layer consisting essentially of amorphous hydrogenated silicon deposited directly on said diamond surface and including another layer deposited directly on said layer consisting essentially of amorphous hydrogenated silicon, said another layer consisting essentially of a material selected from the group consisting of aluminum nitride and a refractory metal oxide.
An optical element comprising;
An optical element comprising:
Dependencies are inferred from the claim text.