ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,497, issued on March 25, was assigned to AMS AG (Premstaetten, Austria).

"Optical interference filters" was invented by David Josef Pramberger-Schriebl (Eindhoven, Netherlands), Gerhard Eilmsteiner (Eindhoven, Netherlands) and Hannes Brandner (Eindhoven, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes an emitter operable to emit a first light wave. The optical device also includes a detector operable to detect a second light wave that is based on the first light wave. The second light wave is susceptible to being coupled with an undesired light wave that is based on the first light wave. The optical device furt...