ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,073, issued on Nov. 11, was assigned to Raytheon Co. (Arlington, Va.).
"Method of strengthening an optical element" was invented by Ralph Korenstein (Natick, Mass.) and Christopher S. Nordahl (Chelmsford, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to various aspects and embodiments, a system and method for providing an optical element is disclosed. In one example, the optical element includes a substrate formed from a Nanocomposite Optical Ceramic (NCOC) material that includes a first oxide nanograin material dispersed in a second oxide nanograin material, and a compressive layer of the NCOC material formed on a surface of the su...