Multiple radiation inspection of ophthalmic lenses

摘要

Methods for inspecting ophthalmic lenses with different wavelengths of radiation are disclosed herein.

主权项

1. A method of inspecting a silicone hydrogel ophthalmic lens housed in a container with packaging solution that is moving through a manufacturing line comprising
(a) illuminating the ophthalmic lens with radiation comprising one or more members of the group consisting of visible, ultraviolet, or infrared radiation to create a first image; (b) transferring the first image to an intermediate storage area (c) illuminating the ophthalmic lens with radiation comprising one or more members of the group consisting of visible, ultraviolet, or infrared radiation to generate a second image, provided that the illuminating radiation of step (c) is different from the illuminating radiation of step (a)
wherein said illuminating of step (c) is conducted in a substantially short period of time after the illuminating of step (a) (d) transferring the first image from the intermediate storage area to an image capturing device (e) transferring the second image to the intermediate storage area (f) transferring the second image to the image capturing device (g) comparing the first image to the second image when viewed from the image capturing device to determine if the ophthalmic lens contains defects.