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US 2007/0182939 A1Published application
Digital projection system without a color filter
AssigneeTexas Instruments Incorporated
InventorsAndrew Huibers, Regis Grasser
Life of this patent
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Abstract
A digital system without a color filter is provided. The desired color components are produced by a light source capable of emitting the desired color components. The color components are delivered to the pixels of the spatial light modulator through a group of optical lens and/or lightpipes, but without a color filter.
Claims33
A projection system capable of producing a color image, comprising:
- an illumination system comprising an array of light sources capable of producing a set of color light beams;
- a spatial light modulator comprising an array of micromirror devices for modulating the incident light;
- a projection lens for projecting the modulated light onto a screen;
- wherein a color wheel with a multiplicity of color segments capable of producing the set of color light beams is absent from the projection system;
- and
- wherein the illumination system is optically coupled to the spatial light modulator without a condensing lens.
3 more elements
Dependencies are inferred from the claim text.