Optics: image projectors – Plural
Reexamination Certificate
2011-03-22
2011-03-22
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Plural
C353S122000
Reexamination Certificate
active
07909474
ABSTRACT:
A digital projection apparatus has a first light modulation subsystem with a first light source producing linear illumination of a first spectral color and a second light source producing linear illumination of a second spectral color. A first light modulator chip (110a) has at least two independently addressable linear arrays of light modulating devices. A first spatial filter (108) blocks reflected light and transmits diffracted light along a first optical path. A second light modulation subsystem has at least a third light source producing linear illumination of a third spectral color. A second light modulator chip has at least one independently addressable linear array of light modulating devices. A second spatial filter blocks reflected light and transmits diffracted light along a second optical path. A color combining element directs modulated light onto a common optical path. Projection optics direct modulated light toward a scanning element (122) for projection toward a display surface (124).
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J. Agostinelli et al.: “GEMS: A Simple Light Modulator for High-Performance Laser Projection Display”, Proceedings of the 13th International Display Workshops (IDW 06), Dec. 7, 2006, pp. 1579-1582, XP-002538522.
Agostinelli John A.
Kowarz Marek W.
Marcus Michael A.
Blish Nelson Adrian
Eastman Kodak Company
Epps Georgia Y
Le Bao-Luan
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