| 摘要 |
An injection compression molding method of a lens is provided, where a toggle link mechanism ( 65 ) is actuated to close a molding die ( 50 ) and a movable die plate ( 64 ) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism ( 65 ) is actuated to advance the movable die plate ( 64 ) toward a fixed die plate ( 61 ), the relative position of a rear die plate ( 62 ) and the movable die plate ( 64 ) is made constant at a position where extension of a tie bar ( 63 ) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.
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