(63) Continuation-in-part of application No. 09/798,594, embodiment, an operator or
passenger uses the invention to filed on Mar. 2, 2001, which is a continuation-in-part control …

Disclosed is an optical valve or light valve for providing large area collimated illumination
from localized light sources, and system and method thereof for 2D, 3D, and/or …

5,423,554 A 6, 1995 Davis 6.219, 032 B1 4/2001 Rosenberg et al. 5,454,043 A 9, 1995
Freeman 6,236,736 B1* 5/2001 Crabtree et al.............. 382,103 5,481,454 A 1/1996 Inoue et …

(57) ABSTRACT A real-time computer vision system tracks the head of a computer user to
implement real-time control of games or other applications. The imaging hardware includes …

A privacy display comprises a spatial light modulator and a compensated switchable liquid
crystal retarder arranged between first and second polarizers arranged in series with the …

(57) ABSTRACT A privacy display comprises a polarized output spatial light modulator,
reflective polarizer, switchable liquid crystal retarder and polarizer. In a privacy mode of …

A privacy display comprises a spatial light modulator and a passive retarder arranged
between first and second polarisers arranged in series with the spatial light modulator. On …

(57) ABSTRACT A privacy display comprises a spatial light modulator and a compensated
switchable liquid crystal retarder arranged between first and second polarisers arranged in …

An identity verification system is used to identify persons with high accuracy, while avoiding
direct contact with the device to prevent any negative psychological reaction from a user …

A spatially multiplexed autostereoscopic display is arranged to provide landscape and
portrait operation. Multiple optical windows may be provided by spatial and temporal …