OBJECTIVE LENS DRIVING UNIT AND MANUFACTURING METHOD THEREOF PHOTO PICK-UP UNIT AND MANUFACTURING METHOD THEREOF PHOTO DISK UNIT AND MANUFACTURING METHOD THEREOF TRACKING SPRING BOARD ARRAY FOCUSING SPRING BOARD ARRAY INJECTION MOLDING DIE

摘要

The present invention is an objective lens driving apparatus and a method for manufacturing an optical pickup device and a method of manufacturing the same, an optical device and its manufacturing method, a tracking plate spring array, a focusing plate spring array, injection of a forming mold, having a lower die and upper die an injection mold for forming the objective lens includes a plurality of gates formed in the lower mold in a vertical position with respect to the opening and closing directions; The lower die, the upper die, and a for the flow a resin in a cavity (cavity) formed at the other end of the mold formed in each end, and the upper die of the plurality of runners connected to the corresponding gate lower die and upper die, the tip of the end of the upper die each runner comprises characterized in that formed at an angle towards the upper die.