Title:
OPTICAL SHEET AND OPTICAL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2020/171219
Kind Code:
A1
Abstract:
This optical sheet is configured from a laminate that is formed by laminating: a polarization layer having a polarization function; and a light-absorbing layer comprising a material including resin and at least one type of light absorbing agent, and absorbing light in a specific wavelength region in a visible light region. The optical sheet has, in a light absorption spectrum, a first peak having a peak wavelength P1 of absorptance in a wavelength region of 460-510 nm inclusive, and a second peak having a peak wavelength P2 of absorptance in a wavelength region of 430-680 nm inclusive. Further, when the average transmittance of visible light in a wavelength region of 475-650 nm inclusive is denoted by TAVE, and the minimum transmittance of visible light in the wavelength region of 475-650 nm inclusive is denoted by TMIN, TMIN/TAVE is 0.20 or more.
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Inventors:
NISHINO SATOSHI (JP)
Application Number:
PCT/JP2020/007152
Publication Date:
August 27, 2020
Filing Date:
February 21, 2020
Export Citation:
Assignee:
SUMITOMO BAKELITE CO (JP)
International Classes:
G02C7/10; G02B5/22; G02B5/30; G02C7/12
Domestic Patent References:
| WO2018011613A1 | 2018-01-18 |
Foreign References:
| US20170299895A1 | 2017-10-19 | |||
| JP2013524300A | 2013-06-17 | |||
| KR20090090852A | 2009-08-26 | |||
| CN106249484A | 2016-12-21 | |||
| JP2011175260A | 2011-09-08 | |||
| JP2018534637A | 2018-11-22 | |||
| JP2013011840A | 2013-01-17 | |||
| KR20130020379A | 2013-02-27 | |||
| JP2014531058A | 2014-11-20 | |||
| JP2014156067A | 2014-08-28 |
Other References:
See also references of EP 3907554A4
Attorney, Agent or Firm:
ASAHI, Kazuo et al. (JP)
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