The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2022
Filed:
Sep. 20, 2019
Corning Incorporated, Corning, NY (US);
Bruce Hildreth Myrick, Keene, NH (US);
Leonard Gerard Wamboldt, Sunderland, MA (US);
Kenneth Smith Woodard, New Boston, NH (US);
Corning Incorporated, Corning, NY (US);
Abstract
A support for optical elements is described. The support includes a base substrate with high specific stiffness and a finishing layer. The base substrate is a non-oxide ceramic material, preferably a carbide, such as boron carbide or silicon carbide. The finishing layer is preferably Ge or an alloy of Al and Si. The finishing layer is or is capable of being processed to provide a surface with low finish. Low finish is achieved by diamond turning or polishing the finishing material. The finishing layer has a coefficient of thermal expansion similar to the coefficient of thermal expansion of the base substrate. The optical element optionally includes a reflective stack on the finishing layer.