Electro-optical scanner module having dual electro-magnetic coil

Details Electro-optical scanner module having dual electro-magnetic coil Electro-optical scanner module having dual electro-magnetic coil

1996-01-22

1997-09-09

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

235472, 348205, 359214, 359223, G06K 710

Patent

active

056659547

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.

REFERENCES:
patent: 5168149 (1992-12-01), Dvorkis et al.
patent: 5422469 (1995-06-01), Bard et al.

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