ALEXANDRIA, Va., March 24 -- United States Patent no. 12,585,117, issued on March 24, was assigned to Snap Inc. (Santa Monica, Calif.).
"Waveguide for augmented reality or virtual reality display" was invented by Mohmed Salim Valera (Sutton Coldfield, Great Britain) and Christian William Olavi Sol (London).
According to the abstract* released by the U.S. Patent & Trademark Office: "A waveguide for use in an augmented reality or virtual reality display comprises a plurality of optical structures in or on a photonic crystal. The plurality of optical structures are arranged in an array to provide two diffractive optical elements overlaid on one another in the waveguide. Each of the two diffractive optical elements is configured to receive li...