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Title:
METHOD FOR MANUFACTURING LENS MOLD AND LENS MOLD
Document Type and Number:
WIPO Patent Application WO/2017/150335
Kind Code:
A1
Abstract:
A method for manufacturing a lens mold having at least one inverted optical curved surface (22) on the surface thereof includes (a) a step for preparing an aluminum base material (10A) having a plurality of inverted optical curved surfaces (22) on the surface thereof or a step for preparing mold base material (10B), which is mold base material (10B) having a base material (12) and an aluminum layer (16) supported on the base material and having a plurality of inverted optical curved surfaces (22) on the surface thereof, (b) a step for forming a porous alumina layer (18) having a plurality of minute recesses (18p) by anodizing the surface of the aluminum base material or aluminum layer, and (c) a step for enlarging the plurality of minute recesses (18p) in the porous alumina layer by bringing the porous alumina layer into contact with an etching fluid.

Inventors:
YAMADA MIHO
MINOURA KIYOSHI
NAKAHARA TAKAHIRO
Application Number:
PCT/JP2017/006855
Publication Date:
September 08, 2017
Filing Date:
February 23, 2017
Export Citation:
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Assignee:
SHARP KK (JP)
International Classes:
C25D11/12; B29C33/38; B29C59/02; C25D11/04; C25D11/06; C25D11/16; C25D11/24; G02B1/118; G02B3/00; B29L11/00
Domestic Patent References:
WO2012029570A12012-03-08
WO2010125795A12010-11-04
WO2009147858A12009-12-10
WO2006059686A12006-06-08
WO2010128662A12010-11-11
WO2015159797A12015-10-22
WO2015163018A12015-10-29
Foreign References:
JP2014217951A2014-11-20
JP2014102311A2014-06-05
JP2015187637A2015-10-29
Attorney, Agent or Firm:
OKUDA Seiji (JP)
Download PDF:
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