Device for molding ophthalmic lens material and method of molding therewith

摘要

A device comprises a lower die 6 composed of a lower die base portion and a lower die columnar portion of which tip surface is formed with a lower die molding surface corresponding to one surface of an ocular lens material; an upper die 8 composed of an upper die base portion that is fitted into an upper portion of a hollow hole of the cylindrical main body for parting the hollow hole into two, forming an intermediate chamber 18 between itself and the lower die base portion into which the monomer composition is filled, and forming an exterior accumulating chamber 20 on a side of an upper aperture of the hollow hole into which the monomer composition is accumulated, and an upper die columnar portion of which tip surface is formed with an upper die molding surface corresponding to another surface of the ocular lens material, wherein a molding cavity 22 having a communicating portion 24 is formed between the upper die molding surface and the lower die molding surface; and not less than three piercing holes 16 provided as to pierce the upper die base portion of the upper die in a vertical direction and as to be positioned at equal intervals around the upper die columnar portion. Simplification of the die arrangement of the molding device for molding ocular lens materials through polymerization in a mold can be effectively achieved, and superior transcriptability and uniform lens shape can be realized.