Laser video imaging system with pulse backtrack and method
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United States of America Patent
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-
May 10, 1994
Grant Date -
N/A
app pub date -
Apr 22, 1993
filing date -
Apr 22, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved, multicolored video imaging system to provide a video image on a projection surface, which system includes a red, blue and green pulsed laser as a light source to provide inlet beams, an acoustic-optical cell to receive the inlet beams, an electrical signal to a sound transducer on the cell to provide a sound-modulated outlet beam; a projection surface to display the multicolored image and a projection system to project the outlet beam onto the projection surface to display the video image. The system includes as an improvement a solid state actuator to move a distance in a 45.degree. direction to backtrack the line of image of the outlet beam and a ramp signal device to provide a ramp signal that is proportional in time to the pulse duration of the input beams when the pulse duration is longer than the pixel propagation time for a line of image to be displayed, thereby minimizing the blurring of the line of image displayed.
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