Automatic optical projection scanner for omni-directional reading of bar code symbols within a confined scanning volume
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United States of America Patent
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Aug 12, 2003
Issued Date -
N/A
app pub date -
May 18, 2001
filing date -
Nov 24, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic bar code symbol reading system having an automatic laser scanning device which can be used at a point-of-sale (POS) station as either a portable hand-supported laser scanner when operated in its automatic hands-on mode of operation, or as a stationary laser projection scanner when operated in its automatic hands-free mode of operation. The bar code symbol reading system provides a collimated scanning pattern projected from the hand-supportable device about a projection axis. The collimated scanning pattern intersects the projection axis within a narrowly confined scanning volume so that bar code symbols disposed within this scanning volume can be read omnidirectionally, while inadvertent scanning of bar code symbols outside of the scanning volume is prevented.
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