| 摘要 |
<p>Disclosed is an apparatus for manufacturing a resin molded article for an optical element, said resin molded article being formed by injecting a molten resin into a cavity, and having a hollow section inside. The apparatus has: a pressurized fluid injecting means, which forms the hollow section by injecting a pressurized fluid into the molten resin injected into the cavity; and a pressing means which presses a movable part in the same direction as the molding die clamping direction. The movable part is moved with respect to a first molding die or a second molding die, in the opposite direction to the molding die clamping direction against the pressing force applied by means of the pressing means, with a pressure increase in the molding dies, said pressure increase being caused by the injection of the pressurized fluid into the cavity. The movable part is moved by the pressing force with respect to the first molding die or the second molding die, in the same direction as the molding die clamping direction, with a pressure reduction in the molding die, said pressure reduction being caused by discharge of the pressurized fluid.</p> |
