METHOD FOR PRODUCING OPTICAL ELEMENT

摘要

The purpose of the present invention is to provide a method for producing an optical element such that when a core is protruded for demolding and a molded product (100) is removed, deformation of and damage to the optical surface can be reduced. A method comprises a step for separating a core (64a) from a first optical surface (OS1) of a lens (LP) by moving the core (64a) to the side of a first die (41) while a flange (FL) which is a part of the lens (LP) is in contact with a holding unit (64b), and a step for separating the lens (LP) from the holding unit (64b) by moving the core (64a) again to the side of a second die (42), wherein under the state that the core (64a) and the lens (LP) are substantially released, the lens (LP) can be detached from the core (64a) by holding a portion other than the lens (LP), such as a runner (RP), etc. Thereby, deformation and damage of the optical surfaces (OS1, OS2), etc., can be reduced at the time of removing the molded product (100), and a high quality lens (LP) can be provided.