ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,924, issued on Feb. 10, was assigned to HOYA Corp. (Tokyo).
"Optical filter and imaging apparatus" was invented by Haruna Imai (Toda, Japan), Shinichi Ogawa (Toda, Japan) and Takeshi Yamazaki (Toda, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an optical filter, including an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass; a bonding layer with a single layer structure; and a resin layer, wherein the resin layer is provided on the absorbing glass substrate through the bonding layer, wherein the bonding layer includes a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al ...