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Patent Searching and Data


Title:
PHOTOCHROMIC LENS AND POLYMERIZABLE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2018/062385
Kind Code:
A1
Abstract:
This photochromic lens has transmittance that satisfies the following conditions at 23°C after irradiation for 15 minutes at a luminance of 50,000 lux using a xenon lamp. (1) Transmittance at 550 nm is 25% or less. (2) Transmittance a at 550 nm is greater than minimum transmittance b between 575 nm and 600 nm, and the difference between transmittance a and transmittance b is 5% or greater. (3) The transmittance curve for 550 – 600 nm has one or more points of inflection.

Inventors:
KAWATO NOBUO (JP)
KAWAGUCHI MASARU (JP)
KADOWAKI SHINICHIRO (JP)
KASORI YUUKI (JP)
Application Number:
PCT/JP2017/035210
Publication Date:
April 05, 2018
Filing Date:
September 28, 2017
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
G02C7/10; C09B47/00; C09B57/00; C09K9/02; G02B1/04; G02B5/23
Domestic Patent References:
WO2015115648A12015-08-06
WO2012141306A12012-10-18
WO2012020570A12012-02-16
WO2012141306A12012-10-18
WO2012020570A12012-02-16
WO2012149599A12012-11-08
WO2013078086A12013-05-30
WO2010020770A12010-02-25
WO2009146509A12009-12-10
WO2010020770A12010-02-25
WO2012162725A12012-12-06
Foreign References:
US20100123105A12010-05-20
JP2010001297A2010-01-07
JP2004078052A2004-03-11
JP2008134618A2008-06-12
JP2014156067A2014-08-28
JP2004500319W
US4812545A1989-03-14
JP2016194499A2016-11-17
JP2017157506A2017-09-07
Other References:
See also references of EP 3521907A4
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
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