High precision mirror, and a method of making it
AssigneeRaytheon Company
InventorJohn P. Schaefer
Life of this patent
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Abstract
A mirror includes: a substrate having a surface; and a thin-film finish layer provided over the surface of the substrate and having on a side thereof opposite from the substrate a surface with a polished finish. According to a different aspect of the invention, a method of making a mirror includes: providing a substrate having a surface thereon; forming a thin-film finish layer over the surface of the substrate using thin-film techniques, the finish layer having a surface on a side thereof opposite from the substrate; and polishing the surface of the finish layer.
Claims32
An apparatus comprising a mirror which includes:
- a substrate having a surface;
- and
- a thin-film finish layer provided over said surface of said substrate and having on a side thereof opposite from said substrate a surface with a polished finish.
A method of making a mirror, comprising:
- providing a substrate having a surface thereon;
- forming a thin-film finish layer over said surface of said substrate using thin-film techniques, said finish layer having a surface on a side thereof opposite from said substrate;
- and
- polishing said surface of said finish layer.
Dependencies are inferred from the claim text.