Optical element molding method and device

摘要

In an optical element molding method, a preform (P) disposed on a pit formed in the lower die (5) is heated to a temperature higher than the given molding temperature to melt at least a part of the preform (P); the heated preform (P) is cooled to the given molding temperature; and the preform (P) that has reached the given molding temperature is compressed inside the space enclosed by the upper die (6), the lower die (5) and the barrel die (7) to form an optical element.