Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1994-09-06
1996-01-23
Shepperd, John
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359199, 359214, 359224, 235462, G06K 710, G02B 2610
Patent
active
054869447
ABSTRACT:
An optical scanner module for directing a light beam to scan an optically encoded symbol includes an optical element mounted for oscillatory motion to scan the light beam in one direction by a flex element capable of torsional flexure. This oscillatory motion is induced by the interacting magnetic fields established by a permanent magnet mounted to the flex element and an electromagnetic coil driven by an AC current. Bidirectional light beam scanning is achieved by mounting an assembly of the flex element, optical element and permanent magnet to one or more additional flex elements for oscillatory motion to scan the light beam in a second direction. This oscillatory motion is induced by the inclusion of an additional permanent magnet and/or electromagnetic coil.
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Bard Simon
Dvorkis Paul
Strat Askold
Shepperd John
Symbol Technologies Inc.
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