ALEXANDRIA, Va., May 5 -- United States Patent no. 12,619,083, issued on May 5, was assigned to SEIKO EPSON Corp. (Tokyo).
"Virtual-image display device and optical unit" was invented by 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 configured to output image light, a projection optical system configured to collimate the image light from the display panel, and a light-guiding member including a light-guiding plate configured to guide the image light, an input diffraction optical element configured to cause the image light to enter the light-guiding plate, and an output diffraction optical element configured to cause the...