US Patent Issued to Rockwell Collins, Digilens on Feb. 17 for "Systems for and methods of using fold and output gratings for dual axis and pupil expansion" (British, American Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,138, issued on Feb. 17, was assigned to Rockwell Collins Inc. (Cedar Rapids, Iowa) and Digilens Inc. (Sunnyvale, Calif.).

"Systems for and methods of using fold and output gratings for dual axis and pupil expansion" was invented by James H. Stanley (Palo Alto, Calif.), Jonathan David Waldern (Diablo, Calif.), Milan Momcilo Popovich (Leicester, Great Britain), Alastair John Grant (San Jose, Calif.) and Steven J. Robbins (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A near eye optical display includes a waveguide comprising a first surface and a second surface, an input coupler, a fold grating, and an output grating. The input coupl...