ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,808, issued on Feb. 24, was assigned to MLOptic Corp. (Redmond, Wash.).
"Waveguide calibration" was invented by Jiang He (Redmond, Wash.), Wei Zhou (Sammamish, Wash.) and Wei Wang (Redmond, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for aligning the projection of a first light source with an in-coupler of a planar waveguide, the method including supplying a secondary light source through an optical path of the planar waveguide to exit at the in-coupler of the planar waveguide as an exit light, determining the concentricity of the exit light with respect to the first light source, and improving the concentricity of the exit light w...