OBJECTIVE LENS, METHOD FOR MANUFACTURING OBJECTIVE LENS, AND MOLDING DIE

摘要

The purpose of the present invention is to provide an objective lens minimizing the limitation on the amount of molten resin flowing into a mold space corresponding to an optical function section of a lens, and to which a fine shape or the like is transferred with high accuracy. Satisfying conditional expression (1) causes the thickness deviation ratio t/T to be relatively low in an objective lens (10), even in an objective lens in which the outside diameter G of the lens is such that 1.45 = G = 4.05; minimizes the limitation on the amount of inflowing molten resin when the objective lens (10) is molded; and makes it possible to prevent an unfilled state. It is thereby possible to manufacture an objective lens (10) having a fine shape that has been transferred with high accuracy.