ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,885, issued on Jan. 13, was assigned to ALPS ALPINE Co. LTD. (Tokyo).
"Display device" was invented by Chihiro Oshima (Fukushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display device capable of displaying an aerial video image by utilizing retroreflection is provided. The display device includes a light source including an emission surface for emitting a video image; an optical member configured to separate incident light into reflected light and transmitted light, the optical member being arranged such that a principal surface of the optical member faces the emission surface of the light source in parallel; and a pair of retrorefle...