ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,715, issued on Dec. 23, was assigned to IQ Structures S.R.O. (Husinec-Rez, Czech Republic).
"Display panel" was invented by Tomas Tethal (Husinec-Rez, Czech Republic), Milan Matejka (Brno, Czech Republic) and Vladimir Kolarik (Brno, Czech Republic).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display panel (1) comprising a body of optical material, the body having at least one optical image recorded therein in an encoded manner, wherein the image is selectively reconstructable and viewable (5, 6, 7) by illuminating the panel (1) using at least one light source (3a, 3b, 3c) under selected illumination conditions, wherein the image is reconstructab...