JP2020057009A5

JP2020057009A5 - Optical filter

Info

Publication number: JP2020057009A5
Application number: JP2019226439A
Authority: JP
Filing date: 2019-12-16
Publication date: 2020-05-21

Description

本発明は、
光吸収層を備え、
前記光吸収層は、０°の入射角度で波長３００ｎｍ〜１２００ｎｍの光を入射させたときに、下記（ｉ）、（ii）、及び（iii）の条件を満たす第一透過スペクトルを有する、
光学フィルタを提供する。
（ｉ）波長４５０ｎｍ〜６００ｎｍにおいて７８％以上の平均透過率を有する。
（ii）波長３５０ｎｍ〜４５０ｎｍにおいて５０％の分光透過率を示す波長が３８０ｎｍ〜４３０ｎｍの範囲内に存在する。
（iii）波長６００ｎｍ〜７５０ｎｍにおいて５０％の分光透過率を示す波長が６２０ｎｍ〜６８０ｎｍの範囲内に存在する。 The present invention is
Equipped with a light absorption layer,
The light absorption layer has a first transmission spectrum that satisfies the following conditions (i), (ii), and (iii) when light having a wavelength of 300 nm to 1200 nm is incident at an incident angle of 0 °.
Provide an optical filter.
(I) It has an average transmittance of 78% or more at a wavelength of 450 nm to 600 nm.
(Ii) A wavelength showing a spectral transmittance of 50% at a wavelength of 350 nm to 450 nm exists within a range of 380 nm to 430 nm.
(Iii) A wavelength exhibiting 50% spectral transmittance at a wavelength of 600 nm to 750 nm exists within a range of 620 nm to 680 nm.

Claims

Equipped with a light absorption layer,
The light absorption layer has a first transmission spectrum that satisfies the following conditions (i), (ii), and (iii) when light having a wavelength of 300 nm to 1200 nm is incident at an incident angle of 0 °.
Optical filter.
(I) It has an average transmittance of 78% or more at a wavelength of 450 nm to 600 nm.
(Ii) A wavelength showing a spectral transmittance of 50% at a wavelength of 350 nm to 450 nm exists within a range of 380 nm to 430 nm.
(Iii) A wavelength exhibiting 50% spectral transmittance at a wavelength of 600 nm to 750 nm exists within a range of 620 nm to 680 nm.

The optical filter according to claim 1, wherein the first transmission spectrum has a spectral transmittance of 1% or less at a wavelength of 300 nm to 350 nm.

The optical filter according to claim 1, wherein the first transmission spectrum has a spectral transmittance of 3% or less at a wavelength of 1000 nm to 1100 nm.

The first transmission spectrum has a spectral transmittance that decreases as the wavelength increases at wavelengths of 600 nm to 750 nm, and a spectral transmittance that increases as the wavelength increases at wavelengths of 350 nm to 450 nm. 3. The optical filter according to any one of 3 above.

The optical filter according to any one of claims 1 to 4, wherein the first transmission spectrum has a spectral transmittance of 10% or less at a wavelength of 700 nm.

The optical filter according to claim 1, wherein the first transmission spectrum has a spectral transmittance of 15% or less at a wavelength of 1100 nm to 1200 nm.

The first transmission spectrum satisfies the following condition (I),
The light absorption layer has a second transmission spectrum that satisfies the following condition (II) when light having a wavelength of 300 nm to 1200 nm is incident at an incident angle of 40 °.
The optical filter according to claim 1.
(I) It has a transmittance of 78% or more at a wavelength of 446 nm to 594 nm.
(II) It has a transmittance of 78% or more at a wavelength of 473 nm to 586 nm.

The light absorption layer has a transmittance of 78% or more at a wavelength of 499 nm to 573 nm when light having a wavelength of 300 nm to 1200 nm is incident at an incident angle of 50 °. The optical filter described.