Digital frequency synthesizer for use with precision AO scanning and positioning
AssigneeChesapeake Laser Systems, Inc.
InventorsJ. Bradford Merry, Thomas Hubin
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Abstract
The invention comprises a digital frequency generator particularly adapted for use with acousto-optical scanning devices, and particularly for such devices as for producing a scan or a raster scan or the like. The invention electronic circuitry includes a precision timing generator which is made up of a tapped delay line which feeds a multiplexor to produce an output pulse of any desired configuration. The output pulses are produced in a stream, but each pulse is produced individually.
Claims9
An AO controlled laser scanning system comprising laser means, AO laser beam scanner means, means to feed the laser beam from said laser means into said scanner means, clock means producing a first stream of clock pulses at a constant period, circuit means for producing an output stream of pulses of predetermined configuration and predetermined period based on said clock pulses, means to feed said output stream of pulses to said scanner means, said pulse producing circuit means comprising means which control the start time and ending time of each pulse in said output stream of pulses individually, said pulse producing circuit means comprising pulse forming means and control means for said pulse forming means, and means to provide pulse forming signals from said pulse forming control means to said pulse forming means with relation to said clock pulses and with relation to said predetermined configuration and predetermined period to produce said output stream of pulses.
Dependencies are inferred from the claim text.