Patent
1989-08-28
1991-04-16
Arnold, Bruce Y.
350 65, 350484, G02B 2608
Patent
active
050076914
ABSTRACT:
A method and apparatus for sweeping a laser beam in a laser scanner is disclosed wherein a laser beam traveling along a path from a laser beam source is directed upon a scanner mirror which reflects the beam into scan pattern mirrors to project a scanning pattern for each sweep of the laser beam. A rotary actuator supports and rotates the scanner mirror to sweep the laser beam onto the scan pattern mirrors and a linear actuator in turn supports and linearly moves the rotary actuator and scanner mirror generally along the path of the laser beam to vary the point of focus of the laser beam and thereby expand the effective depth of field of the laser scanner.
REFERENCES:
patent: 4800270 (1989-01-01), Blais
Bobba Mohan L.
Nojiri Howard H.
Arnold Bruce Y.
Phan James
Spectra-Physics Inc.
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