Anti-glare film works through a combination of absorption and reflection. The film contains metallic or ceramic nanoparticles embedded in a polyester substrate. These particles selectively absorb and reflect specific wavelengths of light — primarily the visible wavelengths that cause glare and the infrared wavelengths that carry heat. The openness factor determines the density of these particles: a 1% film has a very dense particle matrix that blocks nearly all glare, while a 14% film has a sparser matrix that softens light without dramatically reducing brightness. UV rejection is achieved through a separate UV-absorbing layer that blocks 99% of ultraviolet radiation regardless of openness factor. The result is a multi-layer optical system that provides precise control over light, heat, and UV transmission. At Blinds Concept, we source films from manufacturers who use advanced ceramic nanotechnology for superior optical clarity and longevity.