Instant portable bar code reader

Details Instant portable bar code reader Instant portable bar code reader

1990-03-26

1993-02-16

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235455, 235462, G06K 710

Patent

active

051873567

ABSTRACT:
In an exemplary embodiment, a hand-hald bar code reader has an elongated relatively narrow hand grip portion and an enlarged reader head portion with an extended window of greater width that the hand grip portion. Light energy is outwardly through the extended window so as to flood a bar code sensing region in front of the window having a depth dimension of at least about ten millimeters, and an optical system focuses bar code patterns in the sensing region onto an image plane in the reader unit with a resolution so as to read bars/spaces with a minimum width of about 0.0075 inch, or even less. Preferably the lens system provides a depth of focus for such bar code patterns of at least ten millimeters, so that a bar code pattern of marked curvature can be read in its entirety by means of an instant reading operation.

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*Purported English Translation from Nippondenso of Japanese Application previously disclosed in applicant's Mar. 14, 1991 IDS.
Grabowski et al "Code Reading Mechanical Scanning Gun"; IBM Technical Disclosure Bulletin, vol. 5, No. 5, Oct. 1962, P. 78.
Burke "High performance Optical Sensing System for Reading Bar Code" IBM Technical Disclosure Bulletin, vol. 17, No. 3, Aug. 1974, p. 692.
Patent Abstracts of Japan, 1977, p. 76 E 105, the abstract of JP 54 024 543.

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