Optical code reader with devices to locate a code in a reading w

Details Optical code reader with devices to locate a code in a reading w Optical code reader with devices to locate a code in a reading w

1995-09-15

1997-11-18

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

235462, G06K 710

Patent

active

056891040

ABSTRACT:
An optical code reader is held in a hand of an operator and is brought near an article having a 2-dimensional code affixed thereto at the time of reading. The optical code reader includes a read window, a light source for illuminating an article via the read window, and a read control circuit for receiving light reflected by the article via the read window and detecting a 2-dimensional code from an image corresponding to the reflected light. The light source may include a guide beam projector for radiating guide light in a direction almost perpendicular to a read window plane, the guide light indicating a read range corresponding to the size of the read window on a plane parallel to the read window plane. Transparent cap may be provided at the read window for permitting a code on the article to be seen from the outside, while reducing external light entering the cap from the outside of the cap.

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patent: 5331176 (1994-07-01), Sant'Anselmo et al.
patent: 5378883 (1995-01-01), Batterman et al.

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