Patent ID: 7256881
Filing Date: 2007-08-14
Classification: G01M

Abstract:
1. An automated ophthalmic lens inspection system, comprising: (a) an image acquisition system including first and second digital cameras, the first and second digital cameras each having an optical path, and an ophthalmic lens support having a planar lens supporting surface providing the only contact surface for an ophthalmic lens, the image acquisition system being structured to position the ophthalmic lens placed on the planar lens supporting surface of the ophthalmic lens support to allow the first camera and the second camera to focus on the ophthalmic lens at different times, the first camera being positioned at a distance from the ophthalmic lens so that a lens of the first camera is focused on an edge of the ophthalmic lens to obtain a single image of the entire edge of the ophthalmic lens and being positioned so that the optical path of the first camera is parallel to an optical axis of the ophthalmic lens located on the ophthalmic lens support, and the second camera being positioned at a distance from the ophthalmic lens so that a lens of the second camera is focused on a surface of the ophthalmic lens spaced apart from the ophthalmic lens edge to obtain a single image of the surface of the ophthalmic lens spaced apart from the ophthalmic lens edge and being positioned so that the optical path of the second camera is parallel to the optical axis of the ophthalmic lens located on the ophthalmic lens support; and (b) an image analysis system including at least one computer having one or more programs to inspect the images of the edge of the ophthalmic lens and the surface of the ophthalmic lens spaced apart from the ophthalmic lens edge obtained by the first and second cameras, respectively.