ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,748, issued on March 18, was assigned to RealD Spark LLC (Boulder, Colo.).
"Switchable privacy display" was invented by Jonathan Harrold (Leamington Spa, Great Britain), Michael G Robinson (Boulder, Colo.), Graham J. Woodgate (Henley-on-Thames, Great Britain), Robert Ramsey (Boulder, Colo.) and Ben Ihas (Boulder, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A switchable privacy display device comprises a spatial light modulator and a switchable diffractive view angle control retarder arrangement arranged between a display polariser of the spatial light modulator and an additional polariser. The display achieves high image visibility to an o...