Patent ID: 9588268
Date: 2017-03-07
CPC Classifications: B32B,G02B

Claim:
1. An infrared shielding film comprising: a laminated body including a high refractive index layer and a low refractive index layer, the high refractive index layer and the low refractive index layer being alternately laminated and including a high refractive index material and a low refractive index material, respectively, and the high refractive index material and the low refractive index material having mutually different refractive indexes; a primary reflection unit providing a primary reflection band with reflectivity exceeding 60% in near-infrared region in reflection spectra of the infrared shielding film for incident light angles of 0° and 60°, wherein, when in a short-wavelength side of the primary reflection band, wavelengths exhibiting 70% reflectivity of the peak value in the primary reflection band are referred to as s(0) nm and s(60) nm, respectively, a relationship s(60) nm>700 nm is satisfied; a secondary reflection unit providing a secondary reflection peak, the secondary reflection peak having reflectivity of 30 to 60% of a peak value of the primary reflection band in 700 to the s(0) rim in the reflection spectrum for the incident light angle of 0°; and when I(0) nm refers to a wavelength, which exhibits 70% reflectivity of the peak value of the primary reflection band in a long-wavelength side of the primary reflection band in the reflection spectrum for the incident angle of 0°, the secondary reflection unit provides an auxiliary secondary reflection peak having reflectivity of 30 to 60% of the peak value of the primary reflection band in I(0) to I(0)+100 nm.