INFRARED REFLECTING SUBSTRATE AND LAMINATED GLASS
First Claim
1. An infrared reflecting substrate, which comprises a transparent substrate, and an infrared reflecting film having at least 7 layers of a high refractive index dielectric film and a low refractive index dielectric film alternately laminated, formed on one main surface of the transparent substrate,wherein the infrared reflecting film has a first laminate portion having at least 5 layers of a high refractive index dielectric film and a low refractive index dielectric film having a n·
- d/λ
value of from 0.44 to 0.55 where the refractive index is n when the thickness is d (nm) and the wavelength is λ
(nm), continuously laminated, and a second laminate portion having at least 2 layers of a high refractive index dielectric film and a low refractive index dielectric film having a n·
d/λ
value of from 0.03 to 0.12 continuously laminated.
1 Assignment
0 Petitions
Accused Products
Abstract
To provide an infrared reflecting substrate, from which a laminated glass with surface having favorable neutral color tone without stimulus color tone is obtained. An infrared reflecting substrate 1 comprises a transparent substrate 2, and an infrared reflecting film 3 having at least 7 layers of a high refractive index dielectric film 3H and a low refractive index dielectric film 3L alternately laminated, formed on one principal surface of the transparent substrate 2. The infrared reflecting film 3 has a first laminate portion having at least 5 layers of dielectric films 311 having a n·d/λ value of 0.44 to 0.55 where the refractive index is n when the thickness is d (nm) and the wavelength is λ (nm), continuously laminated, and a second laminate portion 32 having at least 2 layers of dielectric films having a n·d/λ value of 0.03 to 0.12 continuously laminated.
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Citations
13 Claims
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1. An infrared reflecting substrate, which comprises a transparent substrate, and an infrared reflecting film having at least 7 layers of a high refractive index dielectric film and a low refractive index dielectric film alternately laminated, formed on one main surface of the transparent substrate,
wherein the infrared reflecting film has a first laminate portion having at least 5 layers of a high refractive index dielectric film and a low refractive index dielectric film having a n· - d/λ
value of from 0.44 to 0.55 where the refractive index is n when the thickness is d (nm) and the wavelength is λ
(nm), continuously laminated, and a second laminate portion having at least 2 layers of a high refractive index dielectric film and a low refractive index dielectric film having a n·
d/λ
value of from 0.03 to 0.12 continuously laminated. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- d/λ
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2. An infrared reflecting substrate, which comprises a transparent substrate, a first infrared reflecting film having at least 5 layers of a high refractive index dielectric film and a low refractive index dielectric film alternately laminated, formed on one main surface of the transparent substrate, and a second infrared reflecting film having at least 5 layers of a high refractive index dielectric film and a low refractive index dielectric film alternately laminated, formed on the other main surface of the transparent substrate,
wherein at least one of the first infrared reflecting film and the second infrared reflecting film has a first laminate portion having at least three layers of a high refractive index dielectric film and a low refractive index dielectric film having a n· - d/λ
value of from 0.44 to 0.55 where the refractive index is n when the thickness is d (nm) and the wavelength is λ
(nm), continuously laminated, and a second laminate portion having at least 2 layers of a high refractive index dielectric film and a low refractive index dielectric film having a n·
d/λ
value of from 0.03 to 0.12, continuously laminated.
- d/λ
Specification