ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,686, issued on March 25, was assigned to Amazon Technologies Inc. (Seattle).
"Waveguide geometry for improved display performance" was invented by Arkady Bablumyan (Tucson, Ariz.) and Chen Liang (Tucson, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention features new waveguide layouts for input, redirection (expansion), and output holograms that minimize cross talk between colors and allow all three colors to reside in a single waveguide. The use of multiple incoupling holograms that diffract different colors of light in different directions, or along different paths, through a waveguide substrate advantageously provides for...