MOLD FOR MOLDING OPTICAL ELEMENT, OPTICAL ELEMENT MOLDING METHOD AND OPTICAL ELEMENT

摘要

PROBLEM TO BE SOLVED: To solve a problem wherein the optical characteristics of an optical element obtained from the same cavity become unstable and it is difficult to obtain optical elements satisfying all of the aberrations obtained from a plurality of cavities, that is, satisfying good optical characteristics from all cavities even if an injection molding condition is controlled. SOLUTION: The optical characteristics of the optical element are controlled by positioning or arranging inserts 6 and 11 or the spacers 8, 13 arranged so as to be connected to the inserts 6 and 11 by rotating them or by using inclined spacers or inserts having axially asymmetric surfaces. COPYRIGHT: (C)2005,JPO&NCIPI