Title:
眼鏡レンズ素材
Document Type and Number:
Japanese Patent JP6703714
Kind Code:
B2
Abstract:
To provide a spectacle lens material that can reduce the transmission of near infrared radiation, can be produced conveniently, has durability, and allows orthoptics.SOLUTION: A spectacle lens material comprises a thio urethane resin obtained by thermal hardening of an isocyanate composition and a thiol composition, the isocyanate composition containing a composite tungsten oxide near-infrared radiation shielding agent. The composite tungsten oxide near-infrared radiation shielding agent has excellent durability and dispersibility into the isocyanate composition.SELECTED DRAWING: None
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Inventors:
Masakazu Honda
Application Number:
JP2017134941A
Publication Date:
June 03, 2020
Filing Date:
July 10, 2017
Export Citation:
Assignee:
Ito Optical Co., Ltd.
International Classes:
G02C7/10; G02B1/04; G02C7/00
Domestic Patent References:
| JP2017149820A | ||||
| JP2015168746A | ||||
| JP2009215487A | ||||
| JP2014156067A | ||||
| JP201825647A |
Foreign References:
| WO2017104853A1 |
Attorney, Agent or Firm:
Akio Iida
Michiko Ema
Chiori Ueda
Toshiyuki Ando
Michiko Ema
Chiori Ueda
Toshiyuki Ando