Composition, film, laminate, infrared transmitting filter, solid image pickup element, and infrared sensor
A composition includes: a coloring material that allows transmission of infrared light and shields visible light; an infrared absorber; and a resin, in which the infrared absorber includes a compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter, and a ratio A/B of a minimum value A of an absorbance of the composition in a wavelength range of 400 to 950 nm to a maximum value B of an absorbance of the composition in a wavelength range of 1100 to 1300 nm is 4.5 or higher.
1. A composition comprising:
a coloring material that allows transmission of infrared light and shields visible light;
an infrared absorber; and
a resin,
wherein the infrared absorber includes a compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter,
the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter is at least one compound selected from the group consisting of a cyanine compound, a squarylium compound, a phthalocyanine compound, and a naphthalocyanine compound, and
a ratio A/B of a minimum value A of an absorbance of the composition in a wavelength range of 400 to 950 nm to a maximum value B of an absorbance of the composition in a wavelength range of 1100 to 1300 nm is 4.5 or higher.
2. The composition according to claim 1 ,
wherein in the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter, a ratio absorbance A max /absorbance A 1020 of an absorbance A max at the absorption maximum to an absorbance A 1020 at a wavelength of 1020 nm is 4.5 or higher.
3. The composition according to claim 1 ,
wherein the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter is a compound represented by the following Formula (1),
in Formula (1), X 1 and X 2 each independently represent a hydrogen atom or a substituent, A 1 and A 2 each independently represent a substituent, R 1 to R 10 each independently represent a hydrogen atom or a substituent, and at least one of R 1 , . . . , or R 8 represents a substituent.
4. The composition according to claim 1 ,
wherein the infrared absorber further includes a compound having an absorption maximum in a wavelength range of longer than 700 nm and 900 nm or shorter.
5. The composition according to claim 4 ,
wherein a content of the coloring material that allows transmission of infrared light and shields visible light is 10 to 60 mass % with respect to a total solid content of the composition,
a content of the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter is 10 to 40 mass % with respect to a total content of the infrared absorber and the coloring material that allows transmission of infrared light and shields visible light, and
a content of the compound having an absorption maximum in a wavelength range of longer than 700 nm and 900 nm or shorter is 1 to 40 mass % with respect to the total content of the infrared absorber and the coloring material that allows transmission of infrared light and shields visible light.
6. The composition according to claim 5 ,
wherein the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter is the cyanine compound or the phthalocyanine compound.
7. The composition according to claim 6 ,
wherein the coloring material that allows transmission of infrared light and shields visible light includes an organic black colorant.
8. The composition according to claim 6 ,
wherein the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter is the phthalocyanine compound.
9. The composition according to claim 1 ,
wherein the coloring material that allows transmission of infrared light and shields visible light has an absorption maximum in a wavelength range of 400 to 700 nm.
10. The composition according to claim 1 ,
wherein the coloring material that allows transmission of infrared light and shields visible light includes two or more chromatic colorants, and
a combination of the two or more chromatic colorants forms black.
11. The composition according to claim 1 , further comprising:
a polymerizable compound; and
a photopolymerization initiator.
12. A film which is formed using the composition according to claim 1 .
13. The film according to claim 12 ,
wherein a maximum value of a light transmittance of the film in a thickness direction in a wavelength range of 400 to 950 nm is 20% or lower, and
a minimum value of a light transmittance of the film in the thickness direction in a wavelength range of 1100 to 1300 nm is 70% or higher.
14. An infrared transmitting filter comprising:
the film according to claim 12 .
15. A solid image pickup element comprising:
the film according to claim 12 .
16. An infrared sensor comprising:
the film according to claim 12 .
17. A laminate comprising:
a layer including a coloring material that allows transmission of infrared light and shields visible light; and
a layer including a compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter,
wherein the compound having an absorption maximum in a wavelength range of longer than 900 nm and 1000 nm or shorter is at least one compound selected from the group consisting of a cyanine compound, a squarylium compound, a phthalocyanine compound, and a naphthalocyanine compound, and
a ratio A/B of a minimum value A of an absorbance of the laminate in a wavelength range of 400 to 950 nm to a maximum value B of an absorbance of the laminate in a wavelength range of 1100 to 1300 nm is 4.5 or higher.
18. The laminate according to claim 17 ,
wherein a maximum value of a light transmittance of the laminate in a thickness direction in a wavelength range of 400 to 950 nm is 20% or lower, and
a minimum value of a light transmittance of the laminate in the thickness direction in a wavelength range of 1100 to 1300 nm is 70% or higher.
19. The laminate according to claim 17 ,
wherein the layer including the coloring material that allows transmission of infrared light and shields visible light includes two or more chromatic colorants, and
a combination of the two or more chromatic colorants forms black.
20. An infrared transmitting filter comprising:
the laminate according to claim 17 .
21. A solid image pickup element comprising:
the laminate according to claim 17 .
22. An infrared sensor comprising:
the laminate according to claim 17 .