Patent ID: 8679379
Filing Date: 2014-03-25
Classification: B29C,B29D,G02B

Abstract:
1. A production method of a wafer lens in which an optical member made of a first hardening resin are provided on both surfaces of a base board, comprising: a process of forming a first duplication molding section made of a second hardening resin and having a plurality of molding surfaces with a negative configuration corresponding to an optical surface configuration from a first mold having a plurality of molding surfaces with a positive configuration corresponding to the optical surface configuration of the optical member provided on one surface of the base board, and lining the first duplication molding section with a base board for the first duplication molding section, thereby forming a first duplication mold; a process of forming a second duplication molding section made of the second hardening resin and having a plurality of molding surfaces with a negative configuration corresponding to an optical surface configuration from a second mold having a plurality of molding surfaces with a positive configuration corresponding to the optical surface of the optical member provided on another surface of the base board, and lining the second duplication molding section with a base board for the second duplication molding section, thereby forming a second duplication mold; a first filling process of filling the first hardening resin between the first duplication mold and the one surface of the base board; a second filling process of filling the first hardening resin between the second duplication mold and the another surface of the base board after the viscosity of the first hardening resin filled between the first duplication mold and the one surface of the base board has been increased to a predetermined viscosity; and a hardening process of hardening the first hardening resins filled in the respective surfaces of the base board after the first and second filling processes; wherein the hardening process conducted for the one surface and the another surface of the base board includes a light hardening process to advance hardening by irradiating light to the filled first hardening resin and a heat hardening process to conduct a heating process to the first hardening resin whose hardening has been advanced by the light hardening process so as to advance further the hardening of the first hardening resin, and the first resin filled between the first duplication mold and the one surface of the base board and the first resin filled between the second duplication mold and the another surface of the base board are hardened simultaneously.