Optical: systems and elements – Optical aperture or tube – or transparent closure
Patent
1990-02-08
1991-08-13
Arnold, Bruce Y.
Optical: systems and elements
Optical aperture or tube, or transparent closure
359900, 359893, 430 5, 51307, G02B 500
Patent
active
050392034
ABSTRACT:
An optical window member comprises a substrate having a multiplicity of through-holes, and a diamond film formed on one surface of the substrate and covering the through-holes. A method for producing the optical window member comprises forming a thin film of diamond on one surface of the substrate, imparting a pattern to a photoresist layer formed on the substrate for partially exposing the substrate, and removing the exposed part of the substrate by etching thereby partically forming a diamond monolayer region. The thus obtained substrate possessing a multiplicity of through-holes assumes a lattice-like form, gives shape to the diamond monolayer region and, at the same time, prevents the thin diamond film from being warped or curved, and imparts improved compression strength to the diamond film and protects the diamond film against fracture.
REFERENCES:
patent: 4296143 (1981-10-01), Franken et al.
patent: 4319889 (1982-03-01), Villalobos
patent: 4421386 (1983-12-01), Podgorski
patent: 4466938 (1984-08-01), Gigl et al.
patent: 4704342 (1987-11-01), Lehrer et al.
Adams Bruce L.
Arnold Bruce Y.
Ben Loha
Seiko Instruments Inc.
Wilks Van C.
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