OPTICAL FILTER AND IMAGING DEVICE

WIPO Patent Application WO/2019/151344

A1

The present invention relates to an optical filter which comprises: an absorption layer that contains a transparent resin and a near-infrared absorbing dye (A) which has the maximum absorption wavelength in dichloromethane within the wavelength range of 850-1,100 nm; and a reflective layer that is composed of a dielectric multilayer film. This optical filter is configured such that: with respect to the near-infrared absorbing dye (A), the ratio of the absorbance at a wavelength of 400 nm to the absorbance at the maximum absorption wavelength in dichloromethane is less than 0.10, and the ratio of the absorbance at a wavelength of 550 nm to the absorbance at the maximum absorption wavelength in dichloromethane is less than 0.04; and with respect to the near-infrared absorbing dye (A), the ratio of the absorbance at a wavelength of 400 nm to the absorbance at the maximum absorption wavelength in the transparent resin is less than 0.15, and the ratio of the absorbance at a wavelength of 550 nm to the absorbance at the maximum absorption wavelength in the transparent resin is less than 0.10.

JPH0784093	[Title of Invention] Recording Material
JP2020132842	METHINE COMPOUND AND METHOD FOR SYNTHESIZING SAME
JPH02135264	CYCLOALKENE COMPOUND AND RECORDING MATERIAL USING THE SAME

HIGASHITAMORI SAYURI (JP)
SHIONO KAZUHIKO (JP)
HOTAKA HIROKI (JP)

PCT/JP2019/003227

August 08, 2019

January 30, 2019

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AGC INC (JP)

C09B23/14; G02B5/22; C09B57/00; G02B5/26; G02B5/28; H01L27/146

WO2016158819A1	2016-10-06
WO2016133099A1	2016-08-25
WO2017135359A1	2017-08-10

JP2007163644A	2007-06-28
JP2008088426A	2008-04-17

EIKOH PATENT FIRM, P.C. (JP)

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