Title:
OPTICAL LENS AND OPTICAL LENS SYSTEM
Document Type and Number:
Japanese Patent JP2018145349
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical lens having a small value of birefringence and a high refractive index and achieving a reduction in size and thickness.SOLUTION: An optical lens of the present invention is formed of cyclic olefin-based resin. The cyclic olefin-based resin comprises a structural unit (A) derived from an α-olefin having 2 to 20 carbon atoms, a structural unit (B) derived from a cyclic olefin having a specific structure, and a structural unit (C) derived from an aromatic vinyl compound. When the total of the structural unit (A), the structural unit (B) and the structural unit (C) included in the cyclic olefin-based resin is set to 100 mol%, the content of the structural unit (A) is 40 mol% or more and 74 mol% or less, the content of the structural unit (B) is 20 mol% or more and 54 mol% or less, and the content of the structural unit (C) is 6 mol% or more and 20 mol% or less; and the cyclic olefin-based resin has a refractive index (nD) of 1.548 or more measured in accordance with ASTM D542.SELECTED DRAWING: None
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Inventors:
SAITO HARUKA
MATSUKI TOMOAKI
HARADA KATSUYOSHI
MOORTHI SUNIL
SOEDA YASUYUKI
KATO HISAHIRO
MATSUKI TOMOAKI
HARADA KATSUYOSHI
MOORTHI SUNIL
SOEDA YASUYUKI
KATO HISAHIRO
Application Number:
JP2017043990A
Publication Date:
September 20, 2018
Filing Date:
March 08, 2017
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
C08F32/00; G02B1/04
Domestic Patent References:
| JP2008024736A | 2008-02-07 | |||
| JPH10287713A | 1998-10-27 | |||
| JP2015172655A | 2015-10-01 |
Foreign References:
| WO2006104049A1 | 2006-10-05 |
Attorney, Agent or Firm:
Shinji Hayami