Scanning device for symbol codes
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United States of America Patent
Stats
-
Dec 21, 1993
Grant Date -
N/A
app pub date -
Dec 19, 1991
filing date -
Dec 20, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Scanning device for optically scanning symbol codes, such as bar codes, the device comprising a laser source for producing a scanning beam, a first lens for focussing the scanning beam, a detector for detecting light backscattered by the scanned symbol codes, a second lens for focussing the backscattered light onto the detector, first and second rotatable deflection means for both transmitting and deflecting the scanning beam so as to generate a scanning pattern, and drive means for rotating the deflection means, wherein both the first and the second deflection means comprise triangular prisms.
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