Light beam scanning pen, scan module for the device and method o

Details Light beam scanning pen, scan module for the device and method o Light beam scanning pen, scan module for the device and method o

1993-10-28

1996-04-09

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

235462, 250353, G06K 710

Patent

active

055063942

ABSTRACT:
A high speed non-contact beam scanning device sized and shaped to provide the ergonomic benefits of a pen or wand, yet can scan a wide angle moving beam across an information-bearing target in one or two dimensional scan patterns such as lines, rasters or other patterns in order to read information therefrom. The device is well suited for reading one or two dimensional bar-code or other printed matter. In order to achieve the high density optical packaging necessary for its high performance to size benefits the device employs a novel in-line or "axial" gyrating, or "axial" scan element. The axial scan element can accept an input light beam at one end and cause it to emerge from its opposite end as a scanned beam, propagating in the same general forward direction it had upon entering the element. Reflected light, which carries information contained on the target, is collected by an internal non-imaging light concentrator and is processed by signal processing electronics. All components are integrated into a thin low mass module small enough to fit in a pen. Communication from the device is achievable by a cable or by wireless transmission.

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