Multiple beam bar code scanner

Details Multiple beam bar code scanner Multiple beam bar code scanner

1990-03-26

1991-12-17

Trafton, David

Registers

Coded record sensors

Particular sensor structure

235470, 359205, 359204, G06K 710

Patent

active

050737023

ABSTRACT:
A bar code scanner includes a source of a scanning light beam which is intercepted by a beam splitter which divides the laser beam into two secondary light beams. Each secondary light beam is projected through a focusing lens which focuses each beam at a different focal point. Both of the secondary light beams are directed at a second beam splitter which combines the two secondary light beams forming a primary scanning light beam which is directed at a scanning area adjacent the scanner which will scan a coded bar code label at various distances from the scanner in accordance with the location of the two focal points.

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patent: 4999482 (1991-03-01), Yang

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