Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2022/085636
Kind Code:
A1
Abstract:
The present invention is an optical filter comprising a substrate and a dielectric multilayer film layered as an outermost layer on at least one main surface of the substrate, wherein the substrate has a resin film including a pigment (IR) and a resin, the pigment (IR) has a maximal absorption wavelength of 680-800 nm in the resin, and the optical filter satisfies all of specific spectral characteristics (i-1) through (i-23) in a spectral transmittance curve at incidence angles of 0 degrees, 30 degrees, and 70 degrees.
Inventors:
SHIONO KAZUHIKO (JP)
SHIMADA TAKURO (JP)
ORITA YUICHIRO (JP)
NISHIMOTO NANAKO (JP)
NAGATA TAKASHI (JP)
SHIMADA TAKURO (JP)
ORITA YUICHIRO (JP)
NISHIMOTO NANAKO (JP)
NAGATA TAKASHI (JP)
Application Number:
PCT/JP2021/038464
Publication Date:
April 28, 2022
Filing Date:
October 18, 2021
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
G02B5/22; C09B67/20; G02B5/26; G02B5/28
Domestic Patent References:
| WO2018043564A1 | 2018-03-08 | |||
| WO2016043166A1 | 2016-03-24 | |||
| WO2019230570A1 | 2019-12-05 | |||
| WO2014103921A1 | 2014-07-03 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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