ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,602, issued on Sept. 23, was assigned to AGC Inc. (Tokyo).
"Optical filter" was invented by Kazuhiko Shiono (Fukushima, Japan), Takuro Shimada (Fukushima, Japan), Yuichiro Orita (Fukushima, Japan), Nanako Nishimoto (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 (IR) and a resin, the dye (IR) has a maximum absorption wavelength in a wavelength of 680 to 800 nm in the resin, and t...