A number of viewers wearing polarized glasses are presented real-time, hiresolution, three-dimensional projected images on a distant screen at video image signal rates. Two laser raster scanners each activate a separate one of two liquid crystal light valves with information representative of left or...http://www.google.ca/patents/US4623219?utm_source=gb-gplus-sharePatent US4623219 - Real-time high-resolution 3-D large-screen display using laser-activated liquid crystal light valves
