Laser and beam intensity modulation system for imagesetting device
 A laser beam intensity modulation system has a variable delay circuit that is used to control the relative delay in the delivery of a video signal between two cascaded AOM's. This delay circuit is controlled by a delay controller that monitors the intensity modulation of the laser beam to provide feedback control. This system maximizes the rise and fall times of the beam to generate precise beam modulation required for high speed image setters. 
Agfa Corporation
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inventional inventional
Arkady B. Steven E. Jeffrey Norman F.
Chernin Mason Knox Rolfe