Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2023/002923
Kind Code:
A1
Abstract:
One aspect of an optical filter according to the present invention is an optical filter comprising: a transparent substrate having a first main surface; and a first light absorption layer provided to the first main surface side of the transparent substrate. The first light absorption layer includes an ultraviolet absorbing pigment and an inorganic material. The ultraviolet absorbing pigment has a maximum absorbing wavelength at a wavelength of 300-430 nm and a molecular weight of not more than 2000.
Inventors:
NAGATA TAKASHI (JP)
NASHI HIROTAKA (JP)
SHIONO KAZUHIKO (JP)
NASHI HIROTAKA (JP)
SHIONO KAZUHIKO (JP)
Application Number:
PCT/JP2022/027766
Publication Date:
January 26, 2023
Filing Date:
July 14, 2022
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
G02B5/22; B32B7/023; B32B9/00; B32B9/04; B32B27/18; C09B23/10; C09B57/00; C09B67/20; C09K3/00
Domestic Patent References:
| WO2015099060A1 | 2015-07-02 |
Foreign References:
| JP3213654U | 2017-11-24 | |||
| JP2019049586A | 2019-03-28 | |||
| JP2015196622A | 2015-11-09 | |||
| JP2016515084A | 2016-05-26 | |||
| JP2020091422A | 2020-06-11 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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