Patent ID: 6716375
Filing Date: 2004-04-06
Classification: B29C,B29D,H05B

Abstract:
A method for making a plastic eyeglass lens, comprisingheating a lens forming composition in a heating apparatus comprising: a body, the body being configured to hold the lens forming composition, the body comprising an opening for receiving a fluid container and an outlet; a heating system positioned within the body for heating the lens forming composition; a valve positioned proximate the outlet, wherein the valve comprises an elongated member, wherein the elongated member is positionable within the outlet in a closed position, wherein the elongated member in the closed position inhibits flow of the lens forming composition through the outlet, and wherein the elongated member is positionable within the outlet in an open position, wherein the elongated member in an open position allows flow of the lens forming composition flows through the outlet during use; placing the liquid lens forming composition in a mold cavity of a mold assembly, wherein the mold assembly comprises a front mold member and a back mold member, the lens forming composition comprising a monomer composition and a photoinitiator; directing activating light toward at least one of the mold members to initiate curing of the lens forming composition; and directing activating light and heat toward at least one of the mold members subsequent to initiating curing of the lens to form the eyeglass lens.