For color television, the picture is divided into 3 basic colors. Each of the surfaces of this system from 1951 are transparent for one wavelength range and reflect the rest. White light is therefore split into 3 color components, each of which is directed onto a photosensitive screen and scanned. Three image signals are obtained in this way, and reassembled in the receiver. The system's enormous size was a major disadvantage, and prevented it from becoming an everyday item.