Patent ID: 6997428

Claim:
An ophthalmic lens mold, said mold comprising a first mold half having a front side and a back side, said front side defining an optical surface; and a second mold half having a front side defining an optical surface, wherein, upon alignment of said first mold half with respect to said second mold half so that said front sides oppose each other, an mold cavity is formed between said front sides to form an ophthalmic lens therein from a moldable material so that said optical surfaces form respective opposing optical surfaces of said ophthalmic lens, and wherein said first mold half includes a first section that transmits curing light from a light source and that extends from said back side to said front side, said first section including at least an area of said first mold half optical surface enclosed by an outermost circumference of said ophthalmic lens, and a second section co-molded with said first section and that blocks said curing light, said second section disposed with respect to said first section so that said second section prevents said curing light incident to said back side from passing through said first mold half into an area of said mold cavity that extends from said first mold half front side to said second mold half front side and that surrounds and extends radially outward of a boundary including said circumference, and said first section passes said incident curing light to an area of said mold cavity bounded by and within said boundary; wherein said first section includes polymethylmethacrylate and wherein said second section includes polymethylmethacrylate and butadiene.