Display apparatus using LCD panel

Details Display apparatus using LCD panel Display apparatus using LCD panel

2007-04-03

2007-04-03

Dowling, William C. (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S037000, C349S008000

Reexamination Certificate

active

11120331

ABSTRACT:
A projection apparatus (10) has an illumination section (68) that provides at least a first, a second, and a third component wavelength illumination. At least two component wavelength modulating sections accept and modulate the component wavelength illumination to provide a modulated component wavelength beam. Each component wavelength modulating section has a portion of a monochrome transmissive liquid crystal modulator panel (118) that has been segmented into at least a first, a second, and a third spatially separate portion. A component wavelength polarizer directs substantially polarized light to the corresponding portion of the monochrome transmissive liquid crystal modulator panel. An illumination path Fresnel lens focuses incident illumination from the component wavelength polarizer through the corresponding portion of the monochrome transmissive liquid crystal modulator panel. An analyzer conditions the polarization of the modulated component wavelength beam. A lens forms an image of superimposed component wavelength beams for projection onto a display surface (40).

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Dewald et al.; “Sequential Color Recapture and Dynamic Filtering: A Method of Scrolling Color” SID 01 Digest, pp. 1076-1079.

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