Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2023/127670
Kind Code:
A1
Abstract:
The present invention relates to an optical filter which comprises a base material, and a dielectric multilayer film (A) that is superposed, as an outermost layer, on at least one main surface side of the base material and reflects light in a wavelength region of 900 nm or higher, the base material having a resin film that contains a resin and a dye (I) having a maximum absorption wavelength within the range of 700-800 nm in the resin. The optical filter transmits visible light and light in at least a partial wavelength region within the range of 750-1000 nm, and satisfies all of specific spectral characteristics (i-1) to (i-9).
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Inventors:
SHIONO KAZUHIKO (JP)
NAKAYAMA MOTOSHI (JP)
NAGATA TAKASHI (JP)
NAKAYAMA MOTOSHI (JP)
NAGATA TAKASHI (JP)
Application Number:
PCT/JP2022/047247
Publication Date:
July 06, 2023
Filing Date:
December 21, 2022
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
G02B5/28; B32B7/023; G02B1/115; G02B1/14; G02B5/22; G02B5/26; H04N23/55
Domestic Patent References:
| WO2017030174A1 | 2017-02-23 | |||
| WO2018043500A1 | 2018-03-08 | |||
| WO2019039386A1 | 2019-02-28 |
Foreign References:
| US8630037B1 | 2014-01-14 | |||
| JP2019124946A | 2019-07-25 | |||
| JP2020034701A | 2020-03-05 | |||
| JP2021006901A | 2021-01-21 | |||
| JP2019078816A | 2019-05-23 |
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
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