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US 6,649,092 B2Granted
Plastic laminated infrared optical element
AssigneeLockheed Martin Corporation
InventorsDel Vicker, Richard Leblanc
Life of this patent
Estimating the term…
Abstract
A laminated optical element has an IR transmissive substrate and a laminated IR transmissive polymeric layer on at least one surface of the IR transmissive substrate. The polymer layer may be a fluoropolymer or polyethylene and has an aspheric/diffractive surface. The polymer layer is affixed to the substrate by adhesive or, alternatively, the polymer layer is formed directly on the substrate resulting in a unitary optical element that is IR transmissive.
Claims20
A method of producing a laminated optical element comprising the steps of:
- disposing a polymer layer onto at least a first surface of a substrate made from a material that is essentially transparent in a desired IR range;
- and
- forming the polymer layer into an optically significant surface.
Dependencies are inferred from the claim text.