| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for preventing invasion of foreign materials into a mold set with a simple structure in a method and an apparatus for producing an optical element. <P>SOLUTION: The method for producing an optical element comprises a heating step of heating the optical element material 100, a pressurizing step of pressurizing the heated optical element material 100, a cooling step of cooling the pressurized optical material element 100, further includes a gas inflow and outflow step of flowing the gas into a gas flow pipe 6 installed to be vertically extending, wherein the mold set 2 for molding the optical element in which the optical element material 100 is held is placed in the gas flow pipe 6, and in the gas inflow and outflow step, a gas A is brought to flow in from either one of the upper and lower parts of the gas flow pipe 6 so as to flow the gas A in the direction along the outer peripheral surface of the mold set 2 and the inflow gas A is discharged from the other part out of the upper or lower part of the gas flow pipe 6. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
