Embodiments relate to a layered film having an antireflection function and an infrared-shielding function. According to at least one embodiment, there is provided a layered film having a heat-ray shielding layer and a low-refractive-index layer in this order on at least one surface of a resin film, where the difference (Rh−Rf) of the refractive index (Rh) of the heat-ray shielding layer and the refractive index (Rf) of the resin film is −0.1 to 0.1, the difference (Rh−RL) of the refractive index (Rh) of the heat-ray shielding layer and the refractive index (RL) of the low-refractive-index layer is 0.05 or greater, and the refractive index (RL) of the low-refractive-index layer is 1.2 to 1.45. The thickness of the heat-ray shielding layer may be 0.1 to 5 μm. The visible-light transmittance of the layered film may be 88% or greater.
Layered film having antireflection function and infrared-shielding function
2021-12-21
Patent
Elektronische Ressource
Englisch
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge |
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