ALEXANDRIA, Va., April 9 -- United States Patent no. 12,271,013, issued on April 8, was assigned to VIAVI Solutions Inc. (Chandler, Ariz.).
"Optical filter" was invented by William D. Houck (Santa Rosa, Calif.) and Charles Andrew Hulse (Sebastopol, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter includes a first mirror that has a first uniform thickness, a second mirror that has a second uniform thickness, and a spacer that is positioned between the first mirror and the second mirror. The spacer has a variable thickness along a first axis of the optical filter. In some implementations, a thickness profile of the spacer, along the first axis, includes one or more portions that have a n...