Ophthalmic article inspection system

G - Physics – 01 – M

Patent

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G01M 11/02 (2006.01)

Patent

CA 2465629

Abstract of the DisclosureAn assembly and method for inspecting ophthalmic lenses includes a light source and a 360~ light structuring aperture configured to direct structured light toward an open center where a lens is positioned for imaging by an imaging device positioned beneath the assembly. The structured light is directed at the entire periphery of the lens and is internally reflected by the lens in the manner of a fiber optic conduit whereby the lens appears dark at clear areas of the lens. If there are defects or imprints on the lens, the internally reflected light will scatter at that point and appear as a bright spot to the imaging device.

L'invention concerne un ensemble et un procédé d'inspection de lentilles ophtalmiques comprenant une source lumineuse et un orifice structurant la lumière à 360·, configuré pour diriger la lumière structurée vers un centre ouvert, dans lequel une lentille est positionnée pour effectuer une imagerie, à l'aide d'un dispositif d'imagerie positionné en dessous dudit ensemble. La lumière structurée est dirigée sur la périphérie entière de ladite lentille et elle est réfléchie de manière interne par ladite lentille, comme un conduit de fibre optique, de sorte que ladite lentille semble sombre dans les zones claires. Si il y a des défauts ou des empreintes sur la lentille, la lumière réfléchie de manière interne sera diffusée sur ce point et apparaîtra tel un spot large sur le dispositif d'imagerie.

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