Optical inspection of flat media using direct image technology

Details Optical inspection of flat media using direct image technology Optical inspection of flat media using direct image technology

G - Physics

01

N

G01N 21/958 (2006.01) G01N 35/00 (2006.01)

Patent

CA 2580551

The invention is directed at a method and system of detecting defects in a transparent media such as a piece of glass. The method comprises the steps of transmitting light from a light source towards the transparent media and then detecting defects in the transparent media by scanning the light as it is reflected or passes through the transparent media. The method and system may operate in any one of a dark field mode, a bright field mode for scanning or a bright field mode for inspecting.

La présente invention a trait à un procédé et un système de détection de défauts dans un support transparent tel qu'un morceau de verre. Le procédé comprend les étapes suivantes: la transmission de la lumière depuis une source lumineuse vers le support transparent suivie de la détection de défauts dans le support transparent par le balayage de la lumière au fur et à mesure de sa réflexion ou son passage à travers le support transparent. Le procédé et le système peuvent fonctionner dans un parmi un mode à fond sombre, un mode à fond clair pour balayage ou un mode à fond clair pour inspection.

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