Title:
ACHROMATIC POLARIZING PLATE WITH HIGH-TRANSMISSIVITY AND HIGH-DEGREE OF POLARIZATION
Document Type and Number:
WIPO Patent Application WO/2015/186681
Kind Code:
A1
Abstract:
This achromatic polarizing plate has a high transmissivity, while expressing an achromatic white color when the absorption axes of the polarizing elements are positioned in parallel, and expressing an achromatic black color when the absorption axes of the polarizing elements are positioned orthogonally to one another. This polarizing element contains at least two specific azo compounds, and the absolute value of the difference between the average transmissivity of 420nm to 480nm light and the average transmissivity of 520nm to 590nm light is within 2.5, and the absolute value of the difference between the average transmissivity of 520nm to 590nm light and the average transmissivity of 590nm to 640nm light is within 2.0.
Inventors:
MOCHIZUKI NORIAKI (JP)
Application Number:
PCT/JP2015/065834
Publication Date:
December 10, 2015
Filing Date:
June 02, 2015
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
POLATECHNO CO LTD (JP)
POLATECHNO CO LTD (JP)
International Classes:
G02B5/30; C09B29/08; C09B31/08; C09B31/22; C09B45/28; C09B56/04; G02F1/1335
Domestic Patent References:
| WO2012165223A1 | 2012-12-06 | |||
| WO2015111472A1 | 2015-07-30 |
Foreign References:
| JPH05295281A | 1993-11-09 | |||
| JP2003215338A | 2003-07-30 | |||
| JPH09302250A | 1997-11-25 | |||
| JP4815721B2 | 2011-11-16 | |||
| JPH0312606A | 1991-01-21 | |||
| JPH11218611A | 1999-08-10 | |||
| JP4162334B2 | 2008-10-08 | |||
| JP4360100B2 | 2009-11-11 |
Other References:
See also references of EP 3153896A4
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, p. c. (JP)
Patent business corporation Asamura patent firm (JP)
Patent business corporation Asamura patent firm (JP)
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