Method and device for detecting surface defects on the neck...

Details Method and device for detecting surface defects on the neck... Method and device for detecting surface defects on the neck...

2008-01-08

2008-01-08

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Reexamination Certificate

active

07317524

ABSTRACT:
A device for detecting surface defects (2) on the neck ring (3) of a container comprises:a light source (5) illuminating, by means of an incident light beam, a section of the surface of the neck ring of the container, along a determined incident direction (Di),at least one linear sensor (10) measuring light beams, arranged to receive the light beam reflected by the surface defect, the angle (α) between the incident (Di) and reflection (Dr) directions lying between 15 and 45°, preferably in the order of 30°, one of the directions being parallel to the axis of revolution of the container,means (15) for ensuring the rotation of the container about the axis of revolution through at least one rotation,and a unit (16) for analysing and processing light beams received by the linear sensor, to identify the presence of a surface defect.

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