Patent ID: 6991849

Claim:
A near infrared screening film which consists of (A) a biaxially oriented film made from a polyester containing a near infrared light absorber having a weight reduction start temperature of at least 280° C. and a weight change rate of 10 wt % or less when it is kept at 280° C. for 30 minutes and which has (B) a haze value of 5% or less, (C) a total transmittance for visible lights having a wavelength of 400 to 650 nm of 40% or more and (D) optical properties at visible and near infrared ranges which satisfy the following expressions (1) to (4): 1< T (850)<20 (1) 1< T (950)<20 (2) −10< T (620)− T (540)<10 (3) −10< T (450)− T (540)<10 (4) wherein T(450), T(540), T(620), T(850) and T(950) are light transmittances at wavelengths of 450 nm, 540 nm, 620 nm, 850 nm and 950 nm, respectively.