ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,891, issued on Jan. 20, was assigned to Lumus Ltd. (Ness Ziona, Israel).
"Optical systems and methods for eye tracking based on eye imaging via collimating element and light-guide optical element" was invented by Eitan Ronen (Rechovot, Israel).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light-transmitting substrate is deployed with a first of two major surfaces in facing relation to an eye of a viewer and guides light by internal reflection between the two major surfaces. An optical coupling-out configuration couples image light, that corresponds to a collimated image and that is guided by internal reflection between the two major surfaces, out ...