Electro-optic reader for retro-reflective bar codes
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United States of America Patent
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Sep 25, 2007
Grant Date -
Oct 28, 2004
app pub date -
Aug 16, 2001
filing date -
Aug 16, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for identification comprising: a surface (14) comprising retro-reflective indicta; a source of light that illuminates the indicta (18) along an illumination direction; and a detector (20, 21) that views light reflected from the indicta, wherein the retro-reflector reflects the light that illuminates it as a plurality of beams at a plurality of angles relative to the illumination direction.
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