| 摘要 |
A method of forming an optical element forming metal mold to form an optical element, having steps of: laminating a heat insulation layer 13 on a surface of the base member 11 where the optical element is formed; laminating an intermediate metal layer 14 on a surface of the heat insulation layer 13 by thermal spraying; laminating a surface forming layer 15 , on which a surface shape to be transferred to the optical element is formed, on the intermediate metal layer 14 ; wherein the intermediate metal layer 14 is laminated in a way that parts of the heat insulation layer 13 are exposed substantially evenly from the intermediate layer 14.
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