Patent ID: 7238307
Filing Date: 2007-07-03
Classification: B29C,B29D,B29L,H05B

Abstract:
1. A method of pre-conditioning an optical part insert for use in injection molding an optical part with improved replication of the injection-molding cavity, comprising: providing a mold cavity configured for use in injection molding the optical part; providing the optical part insert having a curvature measurably different from the average curvature of a molding surface of the mold cavity; placing the optical part insert in a position resting against the molding surface of the mold cavity; providing an irradiation source separate from the mold cavity; and heat-soaking the insert via radiant energy from the irradiation source while the insert rests against the molding surface of the mold cavity, wherein the radiant energy is preferentially absorbed by the insert, such that the insert is warmed but does not lose its structural integrity.