Optical: systems and elements – Single channel simultaneously to or from plural channels
Patent
1997-07-10
1999-05-25
Epps, Geogia
Optical: systems and elements
Single channel simultaneously to or from plural channels
359649, G02B 2710, G02B 300
Patent
active
059074370
ABSTRACT:
A light valve image projection system (10) wherein the optical registration of individual primary color images on a projection screen (14) is substantially immune to modification of the projection throw distance is disclosed herein. The inventive light valve projection system (10) is operative to project a composite optical image onto the screen (14), and includes an optical light valve apparatus (18, 19, 20) for generating first and second optical images. A converging optical system (22), in optical alignment with one or more light valves (20), is disposed to overlap the first and second images into a composite image along an optical axis. The projection system (10) of the present invention further includes a projection lens (24) for illuminating the screen (14) with the composite image.
REFERENCES:
patent: 4995702 (1991-02-01), Aruga
patent: 4999703 (1991-03-01), Henderson
patent: 5168351 (1992-12-01), Badley
patent: 5345262 (1994-09-01), Yee et al.
patent: 5499139 (1996-03-01), Chen
patent: 5786934 (1998-07-01), Chiu
patent: 5795047 (1998-08-01), Sannohe
Ledebuhr Arno G.
Sprotbery Donald E.
Epps Geogia
Hughes-JVC Technology Corporation
Lucas Michael A
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