Light projection apparatus
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United States of America Patent
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-
Sep 23, 1986
Issued Date -
N/A
app pub date -
Jun 21, 1985
filing date -
Jan 19, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Light projection apparatus including a laser device and a light separation device for producing red, green and blue light beam components. Ultrasonic diffraction acousto-optical devices are provided for modulating the red, green and blue light beam components respectively, and a scanning device is provided for receiving modulated light from the acousto-optical devices and projecting the light onto a viewing surface. The red, green and blue light beam components are arranged relative to their respective acousto-optical devices so that they intercept the acoustic wave corresponding to any given signal moving through the respective crystals at different times to achieve time differences in modulation of the three components for the given signal. The scanning device is arranged to scan in two dimensions to form a raster.
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Family
International Classification(s)
Cited Art Landscape
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