Patent ID: 8739571
Filing Date: 2014-06-03
Classification: C03B

Abstract:
1. A manufacturing method for manufacturing an optical element, the method comprising: supplying a gas containing a mold-release acceleration substance to a space between a first mold and a second mold which sandwich an optical material; heating an inert gas and supplying the heated inert gas to the space between the first and second molds to heat and soften the optical material; and pressurizing and transforming the heated and softened optical material by moving the first and second molds towards each other, wherein the mold-release acceleration substance is generated by heating raw material for the mold-release acceleration substance, wherein the step of supplying the gas containing the mold-release acceleration substance comprises reducing an amount of the mold-release acceleration substance supplied to the space between the first mold and the second mold during the pressuring and transforming step, and wherein the mold-release acceleration substance is at least one of a hydrocarbon and graphite, or the mold-release acceleration substance is obtained by a reaction of a hydrocarbon or a halogenated hydrocarbon in a raw material form.