The light transmission indicates how much light shines through the window pane with mounted window film.

Window films fulfil a wide variety of functions on a window pane, such as providing privacy or sun protection. At the same time, as much light as possible should fall through the pane because our health and sense of well-being are positively influenced by the brightness of the light.

For special applications or when sleeping, on the other hand, many people find a dark room pleasant.