Strategies For 3d Video With Wide Fields-Of-View

Real three-dimensional images make their full impact only if seen over a wide field-of-view, but those on present three-dimensional a video displays rarely span more than 20. The field-of-view of a multiprojector three-dimensional display can be expanded to 90 or more by a circularly symmetric field lens, and the dark zones typically present between the views of a multiprojector system can be eliminated without ghosting by using a pinhole projector equivalent arrangement and a precise diffuser. A planarised version of the optics has been demonstrated, and if combined with a waveguide screen and microdisplays may give an inexpensive three-dimensional display which has a large, flat screen and wide field-of-view.