ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,392, issued on Dec. 2, was assigned to NITTO DENKO Corp. (Osaka, Japan).

"Light incoupling element, related method and uses" was invented by Kozo Nakamura (Osaka, Japan), Minoru Miyatake (Osaka, Japan), Yufeng Weng (Osaka, Japan), Kari Rinko (Helsinki) and Shingo Matsumoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical incoupling element (100) provided in the form of a discrete item attachable on a lightguide (20) is provided, comprising a substrate (100A) and at least one three-dimensionally formed optical surface (104). The optical surface (104) is configured to incouple light incident thereto and to adjust direction of the incoup...