Electro-optical scanner module having dual electro-magnetic coils
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United States of America Patent
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Sep 9, 1997
Issued Date -
N/A
app pub date -
Jan 22, 1996
filing date -
Oct 21, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A scanner module for directing a light beam to scan an optically encoded symbol includes a scanner component and a permanent magnet mounted for joint oscillatory motion on a support to scan the light beam by a flexible, resilient member having one end connected to the support, and an opposite end connected to a frame. This oscillatory motion is induced by the interacting magnetic fields established by the permanent magnet and an electromagnetic coil driven by an AC current. Bidirectional light beam scanning is achieved by an additional electromagnetic coil.
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