PRODUCTION METHOD OF CURVED-SURFACE METAL MOLD HAVING FINE UNEVEN STRUCTURE AND PRODUCTION METHOD OF OPTICAL ELEMENT USING THIS METAL MOLD

WIPO Patent Application WO/2005/092588

A1

A method of easily producing a metal mold able to add an antireflection structure to a lens or the like having a complicated surface shape such as an aspherical lens. The method comprises the steps of forming a silicon dioxide film (SiO₂) film (2) on a curved-surface base material (1) formed in a specified shape, forming by etching a specified-shape antireflection-structure pattern on the silicon dioxide film (SiO₂) film (2) using a resist mask (3), bonding a metal mold-use metal (4) onto a silicon dioxide film (SiO₂) film (21) on which this antireflection film pattern is formed to transfer the antireflection film pattern onto the metal mold-use metal (4), and then removing the silicon dioxide film (SiO₂) film to form a metal mold (4a) having an antireflection structure on the curved surface.

KOBAYASHI SHINJI (JP)
YAMAGUCHI ATSUSHI (JP)
SUMI SATOSHI (JP)
HIGUCHI MASAHIRO (JP)
MAENO YOSHIAKI (JP)

PCT/JP2005/005012

October 06, 2005

March 18, 2005

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SANYO ELECTRIC CO (JP)
SANYO MAVIC MEDIA CO LTD (JP)
KOBAYASHI SHINJI (JP)
YAMAGUCHI ATSUSHI (JP)
SUMI SATOSHI (JP)
HIGUCHI MASAHIRO (JP)
MAENO YOSHIAKI (JP)

B22C9/06; B22D17/22; B29C33/38; B29C33/42; B29C45/26; B29C45/37; G02B1/11; G02B1/118; G02B3/00; B29L11/00; (IPC1-7): B29C33/38; B29C33/42

JPH05220751A	1993-08-31
JP2000057638A	2000-02-25
JPH09254161A	1997-09-30
JP2003340844A	2003-12-02
JP2004012856A	2004-01-15
JP2004268331A	2004-09-30

Torii, Hiroshi (Kita-ku Osaka-sh, Osaka 72, JP)

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