Laser scanner with integral distance measurement system

Details Laser scanner with integral distance measurement system Laser scanner with integral distance measurement system

1997-06-30

1999-05-04

Evans, F. L.

Registers

Coded record sensors

Particular sensor structure

235462, 2502016, G06K 710

Patent

active

059006110

ABSTRACT:
The present invention relates to a scanner for reading coded symbologies. The invention uses a coherent, visible light source for illuminating the coded symbol during a scan and a detecting means for collecting the reflected light energy from the coded symbol. The invention also employs an invisible light source illuminating the coded symbol during the scan and a one-dimensional position-sensitive detector whose field of view receives images of the illuminating beam. The position-sensitive detector outputs a current which is processed to detect the presence and compute the distance of an object being scanned. Both the visible and invisible light sources from the scanner travel along a shared, coaxial path to and from the object.

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patent: 5534684 (1996-07-01), Danielson
Hamamatsu Photonics K.K. brochure entitled "Position-Sensitive Detectors", Oct. 1988.
Seikosha Co., Ltd. brochure entitled "X-126 Distance Sensor Module". undated.
Unknown Titled Article from Photonics Spectra, May 1997.

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