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Patent Searching and Data


Title:
OPTICAL FILTER AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/049441
Kind Code:
A1
Abstract:
The present invention relates to an optical filter which is provided with an adsorption layer containing a near-infrared absorbing dye and a resin, wherein: the near-infrared absorbing dye contains a squarylium dye that has a maximum absorption wavelength at 650 to 780 nm and a thermal decomposition temperature of 265°C or more, while satisfying (IR20 – IR80) < 65 nm; and the glass transition temperature of the resin is 390°C or more.

Inventors:
SHIONO KAZUHIKO (JP)
YAMADA SAYURI (JP)
YAMAMORI YAYOI (JP)
Application Number:
PCT/JP2020/033687
Publication Date:
March 18, 2021
Filing Date:
September 04, 2020
Export Citation:
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Assignee:
AGC INC (JP)
International Classes:
G02B5/22; C09B23/14; C09B57/00; G02B5/26; G02B5/28
Domestic Patent References:
WO2018100834A12018-06-07
Foreign References:
JP2007119766A2007-05-17
JPH01228960A1989-09-12
JP2012008532A2012-01-12
JP2012103340A2012-05-31
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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