Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2022/075291
Kind Code:
A1
Abstract:
The present invention relates to an optical filter which comprises a base material and a dielectric multilayer film that is superposed, as an outermost layer, on at least one main surface side of the base material, wherein: the base material has a resin film that contains a resin and a dye (I) which has a maximum absorption wavelength of from 690 nm to 900 nm in dichloromethane; the optical filter transmits visible light and at least some light in the wavelength region of from 900 nm to 1,000 nm; and the optical filter satisfies all of specific spectral characteristics (i-1) to (i-6).
Inventors:
ORITA YUICHIRO (JP)
SHIONO KAZUHIKO (JP)
NAGATA TAKASHI (JP)
SHIONO KAZUHIKO (JP)
NAGATA TAKASHI (JP)
Application Number:
PCT/JP2021/036719
Publication Date:
April 14, 2022
Filing Date:
October 04, 2021
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
G02B5/22; B32B7/023; B32B27/32; G02B5/26; G02B5/28
Domestic Patent References:
| WO2014103921A1 | 2014-07-03 | |||
| WO2015056734A1 | 2015-04-23 | |||
| WO2019004319A1 | 2019-01-03 | |||
| WO2016171219A1 | 2016-10-27 |
Foreign References:
| JP2020034701A | 2020-03-05 | |||
| JP2006010764A | 2006-01-12 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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