Title:
OPTICAL MEMBER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/196644
Kind Code:
A1
Abstract:
Provided are an optical member and a method for producing this optical member. The optical member is composed of an injection molded article, and the injection molded article comprises a glutarimide resin that contains: a glutarimide unit having an imidocarbonyl group provided by the imidization of a carbonyl group deriving from (meth)acrylate ester monomer, a repeat unit deriving from (meth)acrylate ester monomer, and a repeat unit deriving from aromatic vinyl monomer. The glutarimide resin has an orientation birefringence of -0.5 × 10-3 to 0.5 × 10-3, a photoelastic constant of -3.0 × 10-12 Pa-1 to 3.0 × 10-12 Pa-1, and a glass transition temperature of at least 125°C. The average value of the phase difference of the optical member is not more than 20 nm.
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Inventors:
EZAKI TOSHIAKI (JP)
SAEGUSA KAZUNORI (JP)
HATANO KEISUKE (JP)
HIRAI KEITA (JP)
NISHIKAWA RIRU (JP)
SAEGUSA KAZUNORI (JP)
HATANO KEISUKE (JP)
HIRAI KEITA (JP)
NISHIKAWA RIRU (JP)
Application Number:
PCT/JP2022/011370
Publication Date:
September 22, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
G02B1/04; B29C45/00; C08F8/48; G02B3/00; G02B5/30
Domestic Patent References:
| WO2012114718A1 | 2012-08-30 | |||
| WO2005054311A1 | 2005-06-16 | |||
| WO2015098980A1 | 2015-07-02 | |||
| WO2014002491A1 | 2014-01-03 |
Foreign References:
| JP2002338702A | 2002-11-27 | |||
| JP2010270162A | 2010-12-02 | |||
| JP2012008248A | 2012-01-12 | |||
| US20170052286A1 | 2017-02-23 |
Attorney, Agent or Firm:
NIIYAMA Yuichi et al. (JP)
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