Optics: image projectors – Plural
Patent
1995-09-20
1997-05-06
Dowling, William
Optics: image projectors
Plural
353 30, 359456, G03B 2114
Patent
active
056264100
ABSTRACT:
A novel rear projection screen that displays images with substantially uniform brightness over a wider field-of-view than prior rear projection screens, comprising a first diffusing assembly for diffusing the image and a second diffusing assembly for further diffusing the image from the first diffuser. In the preferred embodiment, the first and second diffusing assemblies comprise an input diffusing screen and a fiber optic array, respectively, with an output diffusing screen used at the output end of the fiber optic array. A preferred flat panel tiled display system that incorporates the present invention includes a plurality of collimated light sources, with respective liquid crystal display assemblies that impart images onto the collimated light beams. An imager images the image-bearing light beams onto the rear projection screen described above so that they are displayed in a tiled arrangement.
REFERENCES:
patent: 4960314 (1990-10-01), Smith et al.
patent: 5196960 (1993-03-01), Matsuzaki et al.
patent: 5457572 (1995-10-01), Ishii et al.
B. Bahadur, Liquid Crystals: Applications and Uses, vol. 1, World Scientific Publishing (1990), pp. 397-436.
Chambers James M.
Shields Steven E.
Brown Rodney F.
Dowling William
Palomar Technologies Corporation
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