Patent ID: 7595880
Filing Date: 2009-09-29
Classification: A24C,B65H,G01N,G06T

Abstract:
1. An optical system for inspecting a moving web of material having a longitudinal axis extending in a direction of travel of the moving web, a transverse axis extending in a direction perpendicular to the longitudinal axis and a plurality of transverse banded regions, the optical system comprising: a) a trigger device operatively arranged to detect a transverse banded region on the moving web of material and generate at least one signal upon detecting the transverse banded region to initiate the acquisition of an image of an illuminated portion of the moving web of material having at least one transverse banded region; b) an illuminating device in communication with the trigger device and being operatively arranged to illuminate a portion of the moving web of material having at least one transverse banded region in response to a signal generated by the trigger device; and c) an image capturing device in communication with the trigger device and being operatively arranged to acquire an image of a portion of the moving web of material having at least one transverse banded region in a field of view illuminated by the illuminating device in response to a signal generated by the trigger device; and d) a processing unit in communication with the image capturing device and operatively arranged to: