ALEXANDRIA, Va., June 9 -- United States Patent no. 12,650,627, issued on June 9, was assigned to RealD Spark LLC (Boulder, Colo.).
"Marks for angular optical filters" was invented by Jonathan Harrold (Leamington Spa, Great Britain), Graham J. Woodgate (Henley-on-Thames, Great Britain), Michael G Robinson (Boulder, Colo.), Robert Ramsey (Boulder, Colo.) and Ben Ihas (Boulder, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A privacy display comprises a spatial light modulator and a view angle control element that may comprise a first polariser that may be a reflective polariser, a liquid crystal retarder, a compensation retarder and an additional polariser. The layer of liquid crystal material is patter...