ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,870, issued on May 27, was assigned to VIAVI Solutions Inc. (Chandler, Ariz.).
"Optical interference filter" was invented by Jinhui Yang (Santa Rosa, Calif.) and Marius Grigonis (Santa Rosa, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In some implementations, an optical interference filter includes a substrate and one or more sets of layers that are disposed on the substrate. Each set of layers includes: a first layer that comprises at least tantalum and oxygen (e.g., a tantalum pentoxide (Ta2O5) material); a second layer that comprises at least aluminum and nitrogen (e.g., an aluminum nitride (AlN) material); and a third layer that compri...