ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,750, issued on Feb. 24, was assigned to AGC Inc. (Tokyo) and Optical Coatings Japan (Tokyo).
"Optical filter" was invented by Masaaki Miyake (Tokyo) and Naoto Tatsuoka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter including: a substrate having a first major surface and a second major surface; a first dielectric multilayer film laid on or above the first major surface; and a second dielectric multilayer film laid on or above the second major surface, in which: each of the first dielectric multilayer film and the second dielectric multilayer film is a laminate in which one or more low refractive index films, one or more mediu...