Information reader for optically reading code

Details Information reader for optically reading code Information reader for optically reading code

2011-01-18

2011-01-18

Labaze, Edwyn (Department: 2887)

Registers

Coded record sensors

Particular sensor structure

C235S455000, C235S494000

Reexamination Certificate

active

07871005

ABSTRACT:
An information reader has a light source, an optical system having a light receiving sensor and a lens, and a board supporting the source and sensor such that a sensor axis of the sensor perpendicular to the sensor and passing an intersection of an optical axis of the optical system and the sensor is parallel to an emission axis of the source. A positional relation among the lens, sensor and source satisfies a distance Di between the lens and sensor, a distance Da between an optical axis of the lens and the axis of the source, and a distance Do between the lens and a readable area. The axis of the sensor is shifted from the optical axis of the lens by an offset value F=Da×Di/Do in a direction away from the source. The reader optically reads a code placed in the readable area.

REFERENCES:
patent: 2002/0048248 (2002-04-01), Nakao
patent: 2003/0168512 (2003-09-01), Longacre et al.
patent: 2009/0145968 (2009-06-01), Kabeya
patent: A-2006-330987 (2006-12-01), None

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