Optical scanner for bar code scanning

Details Optical scanner for bar code scanning Optical scanner for bar code scanning

1992-10-14

1994-09-27

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235462, 250566, G06K 710

Patent

active

053509099

ABSTRACT:
An apparatus for scanning bar code data recorded on a target includes a source emitting a beam of radiation, and optics for deflecting the beam of radiation along an axis normal to the beam. The apparatus further includes an electronic shutter element defining a plurality of adjacent regions, each region independently capable of assuming a substantially transparent state, and, digital logic, for causing the adjacent regions of the shutter element to assume substantially transparent states in a sequential, directional manner along the axis to affect directional transmission of less than all of the deflected beam onto the target. The apparatus further includes a detector for sensing the presence of radiation reflected from the target, and, optics for converting the radiation reflected from the target into a beam and for focussing the beam onto the detector.

REFERENCES:
patent: 4818886 (1989-04-01), Drucker
patent: 5091636 (1992-02-01), Takada
patent: 5196684 (1993-03-01), Lum et al.

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