Heat ray shielding plate having high visible ray transmittance

摘要: PURPOSE: To form a heat ray shielding plate, having visible transmittance and ability equal to those of conventional products durability hardly corroding in the air, by using only dielectric film as reflecting place containing silver combining with plate substrate high absorptivity. CONSTITUTION: A obtained forming 2 λ 0 /4 optical thickness (λ is 0.8W1.1μm) refractive index 1.9W2.5 on at least one surface 1 (e.g., commercially available blue float glass) 1.4W1.7 index, ≥75% ≤67% sunray transmittance. For example, TiO , Ta O 5 ZrO SnO ZnO, etc., can be used above-mentioned index. COPYRIGHT: (C)1989,JPO&Japio