Patent ID: 7077985
Filing Date: 2006-07-18
Classification: B29C,B29D,B29K,B29L,B32B,G02B,G02C,Y10T

Abstract:
1. A method of forming an ophthalmic lens comprising: providing a mold having a concave portion and a convex portion, said mold also having a portion for forming an add corridor in a multifocal lens; providing a laminate functional film; placing said laminate functional film in said mold, wherein prior to the placing of said laminate functional film in said mold, said laminate functional film has been pre-shaped to a shape shallower than a surface in said mold into which said laminate functional film is being placed; injecting a molten thermoplastic into said mold at a location adjacent to said portion for forming said add corridor; maintaining a temperature of said mold within a range of approximately 270–290 degrees F. during the injection of said molten thermoplastic; allowing said thermoplastic to cool; and, removing the resulting ophthalmic lens having said laminate functional film from said mold.