ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,608, issued on March 25, was assigned to RealD Spark LLC (Boulder, Colo.).
"Observer-tracked privacy display" was invented by Graham J. Woodgate (Henley-on-Thames, Great Britain), Michael G. Robinson (Boulder, Colo.), Jonathan Harrold (Leamington Spa, Great Britain) and Robert A Ramsey (Boulder, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display device comprising a spatial light modulator having a display polariser arranged on one side is provided with an additional polariser arranged on the same side as the display polariser and a polar control retarder between the additional polariser and the display polariser. The polar control retar...