Video projection apparatus

Details Video projection apparatus Video projection apparatus

1988-01-25

1991-01-29

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

340784, 350337, 350338, 350401, 350403, 350408, 353 31, 353 34, H04N 931

Patent

active

049890760

ABSTRACT:
An apparatus for receiving the illumination light from an illumination light souce and for providing a color image on a projection lens includes three displays responsive to a video signal for modulating incident light to display respective component images. Also included are a first dichroic layer for separating the illumination light into a first light component and a first mixed light of different wavelengths to transmit the first light component to one of the displays, a second dichroic layer for separating the mixed light into second and third light component of different wavelengths to transmit the second and third light component to the other two of the displays, respectively, a third dichroic layer for combining the first and second information lights from the first two displays, and a fourth dichroic layer for further combining the information light combined by the third dichroic layer with a third information light from the third display.

REFERENCES:
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4191456 (1980-03-01), Hong et al.
patent: 4425028 (1984-01-01), Gagnon et al.
patent: 4755869 (1988-07-01), Tanaka
patent: 4786146 (1988-11-01), Ledebuhr
patent: 4796978 (1989-01-01), Tanaka et al.
patent: 4864390 (1989-09-01), McKechnie et al.

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