ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,832, issued on Aug. 4.
"Optical security device" was invented by Marek Skeren (Nova Ves I, Czech Republic), Zbynek Ryzi (Littleton, Mass.) and Roman Nahalka (Beroun, Czech Republic).
According to the abstract* released by the U.S. Patent & Trademark Office: "An security device comprises a recorded representation of an optically variable image which is reconstructable and viewable for a security purpose, and comprises: an optical structure having recorded therein a representation of the optically variable image in the form of a plurality of discrete portions of the complete image to be reconstructed, wherein the plurality of image portions can, when reconstructed, only be viewed in...