Patent ID: 6579918
Filing Date: 2003-06-17
Classification: A61F,B29D,G02B,G02C

Abstract:
A process for producing a multifunctional ophthalmic lens having two relatively flat surfaces, which process comprises the steps of:a) cast molding a pre-lens comprising a polymeric composition that forms a first optical component in a pre-lens mold assembly having a retaining mold half and a matching mold half, wherein said retaining mold half provides an optical surface which is an optical curve of said multifunctional lens; b) opening said mold assembly with said optical surface of said pre-lens adhered to said retaining mold half, thereby providing an exposed surface which is the flat surface opposite of said optical surface; c) providing a second optical component on said exposed surface; d) providing an additional amount of said polymeric composition to cover said second optical component; e) placing a finishing mold half to form a finishing mold assembly, wherein said finishing mold half matches said retaining mold half to form a lens cavity larger than said pre-lens; and f) curing said polymeric composition in said finishing mold assembly to form said multifunctional ophthalmic lens.