US Patent Issued to Rockwell Collins, Digilens on April 15 for "Transparent waveguide display with passive expander input bragg gratings with different angular diffraction efficiencies" (American, British Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,895, issued on April 15, was assigned to Rockwell Collins Inc. (Cedar Rapids, Iowa) and Digilens Inc. (Sunnyvale, Calif.).

"Transparent waveguide display with passive expander input bragg gratings with different angular diffraction efficiencies" was invented by Robert D. Brown (Lake Oswego, Ore.), Alastair John Grant (San Jose, Calif.), Wyatt L. Hendrick (Encinitas, Calif.), Milan Momcilo Popovich (Leicester, Great Britain), James H. Stanley (Palo Alto, Calif.) and Jonathan David Waldern (Diablo, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "One embodiment provides an apparatus for displaying an image comprising: a first optical substrate com...