ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,443,040, issued on Oct. 14, was assigned to Canon K.K. (Tokyo).
"Louver, head mounted display, and optical apparatus" was invented by Hideo Genda (Tokyo) and Ryoshu Iura (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A louver includes a light blocking portion having a first surface and a second surface and a base portion made of a transparent material. The light blocking portion is formed in the base portion, being made of a light blocking material. The second surface is a surface that is in contact with the transparent material and that is located on an outer-edge side of the base portion. The first surface is a surface that is in cont...