Part of our ``Technically Speaking`` series on natural light
Solar Energy is measured in nanometers and is classified in three categories: Ultra Violet, Visible Light and Infrared.
It is important to pay close attention to exactly which type of solar energy is being reduced by a window film. Some films claim good solar energy reduction, however, the majority of the energy controlled is actually from the visible light spectrum; not the infrared spectrum. Visible light is what our eyes can see. Any window film that reduces visible light will darken a room, but it may not actually reduce much solar heat, which comes from the infrared spectrum; thus not offering the best energy saving benefits.
What has the biggest effect
With the technology in today’s advanced solar control window films, you can achieve excellent heat reduction by blocking out a good percentage of infrared, while still allowing a great amount of visible light to pass through the glass. Therefore you can continue to enjoy the beauty of sunlight, while reducing unwanted solar heat. This benefit is attainable without generating a reflective appearance as some conventional films do; thus, you will notice a clearer, cleaner view.