Optical system and method for high contrast projection display

Details Optical system and method for high contrast projection display Optical system and method for high contrast projection display

1998-09-16

2000-07-04

Dowling, William

Optics: image projectors

Polarizer or interference filter

353122, 353 69, G03B 2114

Patent

active

060828617

ABSTRACT:
An optical system for a projection display includes one or more polarizing beam splitters, one or more reflective light valves disposed to receive light transmitted through the one or more splitters and one or more phase correcting members, each disposed between the one or more splitters and the one or more light valves, whereby contrast of the display is substantially improved.

REFERENCES:
patent: 4906073 (1990-03-01), Hunahata et al.
patent: 5541673 (1996-07-01), Shioya et al.
patent: 5621486 (1997-04-01), Doany et al.
patent: 5772299 (1998-06-01), Koo et al.
patent: 5829852 (1998-11-01), Jung
patent: 5875008 (1999-02-01), Takahara et al.

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