Video projection apparatus
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United States of America Patent
Stats
-
Jan 29, 1991
Grant Date -
N/A
app pub date -
Jan 25, 1988
filing date -
Jan 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
International Classification(s)
Cited Art Landscape
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