US Patent Issued to GM GLOBAL TECHNOLOGY OPERATIONS on Feb. 17 for "Lightweight pupil replicator" (Michigan Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,133, issued on Feb. 17, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Lightweight pupil replicator" was invented by Manoj Sharma (Troy, Mich.), Thomas A. Seder (Fraser, Mich.) and Kai-Han Chang (Sterling Heights, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pupil replicator for a head up display system includes a waveguide adapted to receive an incoming image beam, and including a transparent body having a partially transmissive top surface and a reflective bottom surface, a Dammann grating adapted to create a plurality of duplicate image beams having equal intensity, and reflect each of the plurality of duplicate image b...