Light modulation device and optical display device, and...

Details Light modulation device and optical display device, and... Light modulation device and optical display device, and...

2007-06-26

2007-06-26

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C353S038000

Reexamination Certificate

active

11052572

ABSTRACT:
A projection type display device includes dichroic mirrors which separate the light from the light source into light of the three primary colors R, G and B, a plurality of color modulation light valves upon which the light beams separated by the dichroic mirrors are respectively incident and comprising a plurality of picture elements which are capable of being individually controlled with regard to their transmittivity ratios, a dichroic prism which combines the light beams from the color modulation light valves, a relay lens which forms the optical images of the color modulation light valves upon the picture element surface of a reflective type liquid crystal light valve, and a reflective type liquid crystal light valve upon which the light from the relay lens is incident and comprising a plurality of picture elements whose reflectivity ratios can be individually controlled.

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patent: 7055964 (2006-06-01), Belliveau
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patent: A 2004-138732 (2004-05-01), None

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