INJECTION MOLD AND METHOD FOR MOLDING AN OPTICAL ELEMENT
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United States of America Patent
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app pub date -
May 22, 2013
filing date -
Jun 29, 2004
priority date (Note) -
Abandoned
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Abstract
An injection mold composed of a movable mold and a fixed mold. The movable mold has bases, a heat insulating layer and a surface processed layer, and the fixed mold has a base. A heat insulator is provided on the inner circumferential surface of the base of the movable mold at a part forming a wall of a cavity. The heat insulating layer is in the rear of the surface processed layer, and therefore, the transfer accuracy of a fine configuration of the surface processed layer is improved. Additionally, since the heat insulator is provided adjacent to the fine configuration, heat radiation from resin is inhibited, and the transfer accuracy of the fine configuration is further improved.
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