Device to identify surface defects, e.g. dents, in neck region of tin can, especially deep drawn drinks tin can; has arrangement of guiding optics to link external light source to the inspection area

摘要

The tin can (1) is illuminated with guiding optics (16) that are arranged above the tin can, so that an outer light source (12) is guided directly on to the outer surface (5) of the tin can.