ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,550, issued on May 13, was assigned to Magic Leap Inc. (Plantation, Fla.).

"Multi-layer diffractive eyepiece having multilevel metasurface" was invented by Brian T. Schowengerdt (Seattle), Dianmin Lin (Los Altos, Calif.) and Pierre St. Hilaire (Belmont, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An eyepiece includes a planar waveguide having a front surface and a back surface. The eyepiece also includes a grating coupled to the back surface of the planar waveguide and configured to diffract a first portion of the light propagating in the planar waveguide out of a plane of the planar waveguide toward a first direction and to diffract a sec...