Patent ID: 6241505
Filing Date: 2001-06-05
Classification: B29C,B29D,B29K,Y10S

Abstract:
An apparatus for making a plastic lens, comprising:a first mold member having a casting face and a non-casting face;a second mold member having a casting face and a non-casting face, the second mold member being spaced apart from the first mold member during use such that the casting faces of the first mold member and the second mold member at least partially define a mold cavity;an ultraviolet light generator configured to direct ultraviolet light rays toward at least one of the first and second mold members during use;an ultraviolet light generator configured to maintain an intensity of light directed by the ultraviolet light generator; anda light sensor to measure the intensity of light directed by the ultraviolet generator; anda filter configured to inhibit light other than ultraviolet light from impinging upon the light sensor.