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Window film technology

Multi-Layer Film

Multi-layer film stacks dozens or hundreds of polymer layers, each tuned to reflect a specific wavelength, achieving very high solar rejection without using metals.

Multi-layer optical films exploit interference between thin polymer layers (sometimes 200+ layers) where each layer is tuned to reflect a narrow band of the solar spectrum. The cumulative effect is a film that reflects most near-infrared while transmitting visible light.

A multi-layer optical film keeps high IR rejection without darkening the glass: strong total solar energy rejection at 70%+ VLT, metal-free and signal-friendly. The technical advantage is selectivity, so you get high IR rejection without darkening the windows.

Multi-layer films sit at the top end of the market. They are appropriate for owners who want maximum heat rejection from a windscreen tint while staying within the LTA 70% VLT rule.