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Patent Searching and Data


Title:
MOLDING DIE AND LENS
Document Type and Number:
WIPO Patent Application WO/2020/045668
Kind Code:
A1
Abstract:
An objective of the present invention is to provide a molding die with which it is not necessary to provide a release material layer on the surface of the molding die. A further objective is to provide a lens having excellent durability and having a water-repellent surface. The present invention relates to a molding die provided with a base portion, and a pattern portion comprising protrusions and recesses provided on a surface of the base portion, wherein the distance between the centers of the protruding portions of the pattern portion is 15 to 50 nm, a recessed/protruding portion ratio of the pattern portion (protrusion/distance between centers of protruding portions) is at most equal to 0.5, the height of the protruding portions of the pattern portion is at least equal to 2 nm, and a defect density of the pattern portion is at most equal to 10 × 101 0 cm². The present invention also relates to a lens provided with a base portion, and a pattern portion comprising protrusions and recesses provided on a surface of the base portion, wherein the distance between the centers of the protruding portions of the pattern portion is 15 to 50 nm.

Inventors:
SAMUKAWA SEIJI (JP)
OHORI DAISUKE (JP)
Application Number:
PCT/JP2019/034281
Publication Date:
March 05, 2020
Filing Date:
August 30, 2019
Export Citation:
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Assignee:
TOHOKU TECHNO ARCH CO LTD (JP)
NAGASE & CO LTD (JP)
International Classes:
B29C33/44; B29C33/42; B29C51/30
Domestic Patent References:
WO2012173162A12012-12-20
Foreign References:
JP2011194848A2011-10-06
JP2006289519A2006-10-26
JP2009290026A2009-12-10
Attorney, Agent or Firm:
LIGHTHOUSE INTERNATIONAL PATENT FIRM (JP)
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