Patent Number: 6,252,721

Title: Mold for molding optical element, mold structure for molding optical element, molding apparatus, optical element molded from resin material, and optical element constituted by plurality of optical surfaces

Abstract: This invention is to provide a mold for molding an optical element in which eccentricity of an optical insert can be suppressed as much as possible. In order to achieve this object, in a mold for molding an optical element, which molds an optical element having a curved optical surface on at least one surface thereof by injecting and solidifying a molten resin material, a mold member that forms a cavity surface for molding the optical surface includes a plurality of specular optical inserts that divide the optical surface into a plurality of surfaces. Contact surfaces of the divided specular optical inserts which come into contact with each other have grooves extending from the optical surface.

Inventors: Ito; Kazuhiko (Yokohama, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: B29C 45/26 (20060101); B29D 11/00 (20060101); G02B 17/08 (20060101); G02B 003/00 (); G02B 007/02 (); B29D 011/00 ()

Expiration Date: 06/26/2018