Window with Variable Light Transmittance

摘要

PURPOSE: A photo-transmittance varying window is provided to increase the transmittance of a visible light region by improving cooling and warming energy efficiency and arranging additional functional layers. CONSTITUTION: A photo-transmittance varying window(10) includes a photo-transmittance substrate(11), a thermo-chromic layer(15), first functional thin layers(13), and second functional thin layers(12). The thermo-chromic layer is arranged at one side of the substrate. The first functional thin layers are in contact with both sides of the thermo-chromic layer. The second functional thin layers are in contact with the first function thin layers. The thermo-chromic layer is based on a material containing vanadium dioxide.