Communications: electrical – Digital comparator systems
Patent
1974-07-01
1976-03-30
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
235 6111E, 250568, 3401463F, 350 7, 350285, G06K 714
Patent
active
039478165
ABSTRACT:
An omnidirectional optical system is arranged for scanning bar coded labels passing a rectangular scanning window with a plurality of interlaced scans in a plurality of differing directions whereby the labels are completely scanned irrespective of orientation. The interlaced and plural directive scanning rays are generated by directing a beam of light, from a laser or like light source, onto a rotating multi-faceted mirror for deflecting the light beam in a line extending in a given direction. A set of fixed mirrors is positioned to deflect the light beam in a number of laterally displaced scanning segments all parallel to the line extending in the given direction. A pair of fixed end mirrors are arranged for reflecting the light from half of the segments back onto the other half of the segments to provide the intersecting scanning pattern. Beam splitting mirrors are interposed in the light beam from the laser for providing additional light beams directed onto the rotating mirror to provide an interlaced raster.
REFERENCES:
patent: 3619028 (1971-11-01), Keene et al.
patent: 3632871 (1972-01-01), Watkins et al.
patent: 3728677 (1973-04-01), Munson
patent: 3762791 (1973-10-01), Fournier et al.
patent: 3818444 (1974-06-01), Connell
patent: 3902048 (1975-08-01), Fleischer et al.
U.S. Published Patent Application-B382,783, Bowen et al., "Omnidirectional Optical Scanner", 1-28-75.
Boudreau Leo H.
International Business Machines - Corporation
Roush George E.
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