ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,946, issued on Feb. 10, was assigned to SEIKO EPSON Corp. (Tokyo).
"Virtual image display device and optical unit" was invented by Katsutoshi Inomoto (Shiojiri, Japan), Mitsutaka Ide (Shiojiri, Japan), Masayuki Takagi (Azumino, Japan) and Takashi Tajiri (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A virtual image display device includes a display panel being a display element configured to emit image light, a light-guiding member including a first total reflection surface and a second total reflection surface, a first diffraction element being provided on a light incidence side in association with the light-guiding member, a seco...