| 摘要 |
PROBLEM TO BE SOLVED: To realize good transfer properties by suppressing the lowering of the temperature of an optical molding core which is used for molding the optical surface of an optical lens. SOLUTION: The mold for injection-molding the optical lens is constituted so thatλand X satisfy the relational expressions: 1.7≤λ≤3.2 and 0.010≤X≤0.025 when the heat conductivity of a movable core (optical surface molding core) 10 is set toλ(W/m×k) and the gap between the movable core 10 on the side of a cavity 50 filled with a molten material and a movable template (template) 20 is set to X(mm). COPYRIGHT: (C)2008,JPO&INPIT |
