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Patent Searching and Data


Title:
OPHTHALMIC MEDICAL INSTRUMENT INCLUDING PHOTOCHROMIC POLYMER AND PRODUCTION METHOD FOR OPHTHALMIC MEDICAL INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2020/261502
Kind Code:
A1
Abstract:
Provided is an ophthalmic medical instrument including a photochromic polymer that is obtained from a photochromic monomer and that exhibits high transparency in a non-active state. The ophthalmic medical instrument according to one embodiment of the present invention includes a photochromic polymer obtained by polymerizing monomer components including a photochromic monomer and a lactam ring-containing monomer, wherein the content proportion of said lactam ring-containing monomer in said monomer components is 10-50 wt%. This ophthalmic medical instrument is provided typically in the form of a contact lens or an intraocular lens.

Inventors:
TOMIDA TOMOMI (JP)
NAKADA KAZUHIKO (JP)
BABA MASAKI (JP)
NIIDA SATOMU (JP)
MOMODA JUNJI (JP)
MIYAZAKI MASAYUKI (JP)
TAKENAKA JUNJI (JP)
Application Number:
PCT/JP2019/025687
Publication Date:
December 30, 2020
Filing Date:
June 27, 2019
Export Citation:
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Assignee:
MENICON CO LTD (JP)
TOKUYAMA CORP (JP)
International Classes:
G02C7/04; A61F2/16; G02B1/04; G02B5/23
Domestic Patent References:
WO2004068215A12004-08-12
WO2012057096A12012-05-03
Foreign References:
JP2007524857A2007-08-30
JP2017049615A2017-03-09
JPH08501504A1996-02-20
EP0277639A21988-08-10
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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