MULTI-FOCAL VISION SYSTEM

MULTI-FOCAL VISION SYSTEM

A machine vision system images bar code labels moving through a horizontal plane at variable object distances within the system's object depth of field Z obj with a plurality of sequential line images, each with different object lengths which gradate Z obj into plural focused object planes, and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SCHMUTZ, LAWRENCE, E, YORSZ, JEFFREY
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Beschreibung
Zusammenfassung:A machine vision system images bar code labels moving through a horizontal plane at variable object distances within the system's object depth of field Z obj with a plurality of sequential line images, each with different object lengths which gradate Z obj into plural focused object planes, and the object plane within which the bar code label lies provides a focused optical image of the bar code to a multilinear photodetector which transduces the focused optical image into a corresponding electrical signal for further processing.