US Patent Issued to Sony Group on June 30 for "Input coupling gratings for waveguide-based displays" (Japanese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,639, issued on June 30, was assigned to Sony Group Corp. (Tokyo).

"Input coupling gratings for waveguide-based displays" was invented by Kazue Shimizu (Kanagawa, Japan), Christophe Peroz (Tokyo) and Sebastien De Cunsel (Atsugi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An input coupling grating (ICG) for a waveguide-based display comprises an input region that receives light and a plurality of unit cells. Each unit cell includes photonic structures arranged at a pitch. The photonic structures of at least one first unit cell have at least one different structural characteristic than the photonic structures of at least one second unit cell....