Ultra compact scanning system for a wide range of speeds, angles and field depth
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United States of America Patent
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Sep 12, 2000
Issued Date -
N/A
app pub date -
Nov 12, 1998
filing date -
Nov 15, 1990
priority date (Note) -
Expired
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Abstract
A non-contact light beam scan system small enough to fit into a hand holdable wand, pen or calculator size terminal incorporates a novel scan element which can scan at rates of ten to hundreds of scans per second in one or two dimensions. The device is immune to low frequency vibrations and can scan large angles of 60 degrees or more. Automatic trigger circuitry enables it to be used equally well in hand held or fixed mount applications. The depth of operating range is extended with a novel focal system which is integrated with the light source. The entire scanning system for generating a beam, focusing the beam electronically, scanning the beam, collecting light from a target and converting it into electrical signals, and automatically generating a trigger signal can work with industry standard low or high speed bar code decoders.
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