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Title:
OPTICAL ARTICLE
Document Type and Number:
WIPO Patent Application WO/2019/189855
Kind Code:
A1
Abstract:
The present invention provides an optical article such as an eyeglass lens that both is strong and has an enhanced rate of discoloration of a light-modulating layer having photochromic properties. This optical article such as an eyeglass lens has a light-modulating layer that contains a photochromic pigment and a resin component, and a protective layer, said layers being formed on a substrate. The indentation hardness of an inner part in the film thickness direction of the light-modulating layer is within the range of 0.1-10 mgf/μm2. In addition, a value defined as the indentation hardness of an inner part in the film thickness direction of the protective layer multiplied by the film thickness thereof is 5-9000 times a value defined as the indentation hardness of the inner part in the film thickness direction of the light-modulating layer multiplied by the film thickness thereof.

Inventors:
SHIMADA TAKUYA (JP)
HAMAMOTO TERUFUMI (JP)
KUTSUKAKE YUSUKE (JP)
YAMASHITA TERUO (JP)
WATANABE TSUYOSHI (JP)
Application Number:
PCT/JP2019/014248
Publication Date:
October 03, 2019
Filing Date:
March 29, 2019
Export Citation:
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Assignee:
HOYA LENS THAILAND LTD (TH)
SHIMADA TAKUYA (JP)
HAMAMOTO TERUFUMI (JP)
KUTSUKAKE YUSUKE (JP)
YAMASHITA TERUO (JP)
WATANABE TSUYOSHI (JP)
International Classes:
G02C7/10; G02B5/23
Domestic Patent References:
WO2003011967A12003-02-13
WO2003011967A12003-02-13
WO2008001578A12008-01-03
WO1994022850A11994-10-13
WO1996014596A11996-05-17
Foreign References:
JP2008058932A2008-03-13
JP2008058932A2008-03-13
JPH0228154A1990-01-30
JPS62288830A1987-12-15
JP2001114775A2001-04-24
JP2001031670A2001-02-06
JP2001011067A2001-01-16
JP2001011066A2001-01-16
JP2000347346A2000-12-15
JP2000034476A2000-02-02
JP2003044761A2003-02-14
JP2000327676A2000-11-28
JP2000327675A2000-11-28
JP2000256347A2000-09-19
JP2000229976A2000-08-22
JP2000229975A2000-08-22
JP2000229974A2000-08-22
JP2000229973A2000-08-22
JP2000229972A2000-08-22
JP2000219687A2000-08-08
JP2000219686A2000-08-08
JP2000219685A2000-08-08
JPH11322739A1999-11-24
JPH11286484A1999-10-19
JPH11279171A1999-10-12
JPH10298176A1998-11-10
JPH09218301A1997-08-19
JPH09124645A1997-05-13
JPH08295690A1996-11-12
JPH08176139A1996-07-09
JPH08157467A1996-06-18
JP2005218994A2005-08-18
Other References:
See also references of EP 3779572A4
Attorney, Agent or Firm:
OTSUKA Takefumi (JP)
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