Laser video imaging system with pulse backtrack and method

Details Laser video imaging system with pulse backtrack and method Laser video imaging system with pulse backtrack and method

1993-04-22

1994-05-10

Groody, James J.

Television

Video display

Projection device

348769, 359285, 359305, H04N 931

Patent

active

053113217

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.

REFERENCES:
patent: 3514534 (1970-05-01), Korpel
patent: 4611245 (1986-09-01), Trias
patent: 4720747 (1988-01-01), Crowley
patent: 4833528 (1989-05-01), Kobayashi

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