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Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2022/065170
Kind Code:
A1
Abstract:
The present invention relates to an optical filter comprising a substrate and a dielectric multilayer film that is laminated, as an outermost layer, on at least one principal surface side of the substrate, the substrate having a resin film including: a pigment (U) that has a maximum absorption wavelength of 380-425 nm in dichloromethane; a pigment (A) that has a maximum absorption wavelength of 690-730 nm in dichloromethane; and a resin, wherein the optical filter satisfies all of specific spectral characteristics (i-1)-(i-8).

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Inventors:
SHIONO KAZUHIKO (JP)
NAGATA TAKASHI (JP)
Application Number:
PCT/JP2021/034011
Publication Date:
March 31, 2022
Filing Date:
September 15, 2021
Export Citation:
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Assignee:
AGC INC (JP)
International Classes:
G02B5/22; G02B5/28
Domestic Patent References:
WO2015099060A12015-07-02
WO2020054786A12020-03-19
Foreign References:
JP2019066814A2019-04-25
JP2019200399A2019-11-21
JP2019012121A2019-01-24
JP2018180533A2018-11-15
US20200241185A12020-07-30
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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