ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,579, issued on Oct. 21, was assigned to AGC Inc. (Tokyo).
"Optical filter" was invented by Yuichiro Orita (Fukushima, Japan), Kazuhiko Shiono (Fukushima, Japan) and Takashi Nagata (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter including: a substrate; and a dielectric multilayer film laid on or above at least one major surface of the substrate as an outermost layer, in which the substrate includes a resin film including a dye (I) having a maximum absorption wavelength in a wavelength of 690 to 900 nm in dichloromethane, and a resin, the optical filter transmits visible light and light in at least part of a wavelengt...