| 摘要 |
[Problem] Provided is a near-infrared reflective film having an excellent near-infrared reflectivity, and a high transmittance in the visible light region, and not having visible light reflectivity irregularity, and a near-infrared reflector provided with the film. [Solving means]A near-infrared reflective film having a constitution in which, on a base material, a high refractive layer containing a water-soluble polymer and a metal oxide particle having a refractive index higher than the refractive index of the water-soluble polymer and a low refractive layer containing a water-soluble polymer and a metal oxide particle having a refractive index lower than the refractive index of the water-soluble polymer are alternately laminated individually in two or more layers, characterized in that, letting the total number of the layers of the high refractive layer and the low refractive layer be n, the total film thickness of the component layers from the region of n/2 to the base material be Sigmad1 and the total film thickness of the component layers from the region of n/2 to the outermost layer be Sigmad2, the film thickness ratio Sigmad1/Sigmad2 is from 1.05 to 1.80.
|
