Title:
光学シートおよび光学部品
Document Type and Number:
Japanese Patent JP7088379
Kind Code:
B2
Abstract:
An optical sheet 10 of the present invention includes a laminate including a polarizing layer 4 containing at least one kind of a light absorbing agent and having a polarizing function, and a protective layer 1 laminated on the polarizing layer 4, in which in the polarizing layer 4, a value of a* is 0 or more and 30 or less and a value of b* is 0 or more and 30 or less in an L*a*b* color system defined by JIS Z 8781-4, and in the optical sheet 10, a size of a Q Blue value defined by Australian Standard Australia/New Zealand Standard 1067-2016 is 0.70 or more. Thus, even when the optical sheet is toned to brown, blue light can be distinguished with excellent distinguishability.
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Inventors:
Tetsushi Nishino
Hiroshi Oya
Hiroshi Oya
Application Number:
JP2021097242A
Publication Date:
June 21, 2022
Filing Date:
June 10, 2021
Export Citation:
Assignee:
Sumitomo Bakelite Co., Ltd.
International Classes:
G02B5/30; G02B5/22; G02C7/10; G02C7/12; G02C9/00
Domestic Patent References:
| JP2021505955A | ||||
| JP2008066964A |
Foreign References:
| WO2019113357A1 | ||||
| WO2014030611A1 | ||||
| WO2014115705A1 | ||||
| US20180299598 |
Attorney, Agent or Firm:
Tatsuya Masuda
Kazuo Asahi
Kazuo Asahi