PRESS FORMING DEVICE FOR OPTICAL ELEMENT

摘要

A press forming device for an optical element for forming an optical element by pressing a glass material between a plurality of upper dies and a plurality of lower dies forming pairs with the upper dies, the device comprising a means for imparting a pressure to the plurality of lower dies, a body mold into which the plurality of pairs of upper dies are inserted from above and the plurality of pairs of lower dies are inserted from below and which guides the relative position of the upper and lower dies, a pressure generating means for pressing the body mold upward, and an upper die pressure distribution means for pressing each upper die downward as the body mold is moved upward by a pressing force generated by the pressure generation means and applying a pressure independently to each upper die, characterized in that the upper die pressure distribution means; comprises an upper cylinder receiving a load by a pressure acting on an upper die, and an upper rocking member arranged to be able to rock on a fulcrum and having one end abutting on the upper end of the upper die and the other end coupled with the upper cylinder; regulates a pressure being applied from the upper cylinder to each upper die through the upper rocking member in a process for moving the body mold upward by the pressure generation means; and presses the lower die upward by the means for imparting a pressure to the lower dies.