SYSTEM FOR INSPECTING THE LOWER FACE OF A MOVING STRIP

摘要

A system for optically inspecting the lower face of a moving strip for defects in a production line said system comprising: optical means (1) for inspecting the lower face of the strip, comprising a light source (2) for illuminating the surface of the strip, and a camera (3) arranged in the path of the light from the source (2) reflected by the surface of the strip; electronic defect-indication means (4) respectively associated with the optical means (2, 3) for inspecting the lower face of the strip, characterized in that the optical means (1) comprises means (6) for keeping the visual field of the camera (3) to the strip free from liquid and/or solid contaminants.