Patent ID: 6228289
Filing Date: 2001-05-08
Classification: B29D,G02B,Y10S

Abstract:
A method of forming a plastic eyeglass lens comprising:placing a liquid lens forming composition in a mold cavity defined by at least a first mold member and a second mold member, the lens forming composition comprising:a monomer that cures by exposure to activating light to form the eyeglass lens during use;a photoinitiator that initiates curing of the monomer in response to being exposed to activating light during use;directing activating light toward the mold cavity, the activating light causing the lens forming composition to at least partially cure; andfiltering the activating light with a filter, the filter comprising a liquid crystal display panel, wherein the liquid crystal display panel is configured to vary an intensity of activating light as the activating light is directed toward the mold members, and wherein filtering the activated light comprises forming a pattern of light and dark areas on the liquid crystal display panel.