For example, with its HelioJet^® Spectrum^CC cabin lighting system, SCHOTT offers a unique full-color system based on LEDs that produces uniformly homogeneous light. In this case, LED light is guided via the two ends of an optical lightguide and radiated uniformly over the entire length according to fiber optic principles. Furthermore, a special sensor controller continuously measures the color shade of each LED package and corrects deviations from the target value on the basis of human color perception. This produces homogeneous light and color stability for the full duration of its operating time. This works because LEDs are the only electric light source capable of rendering the entire color spectrum of approximately 16 million colors that can be perceived by the human eye. Different lighting scenarios can now be used continuously and harmoniously, such as sunsets or sunrises.

”Our sensor technology has been so successful that we are now able to extend this concept to the entire lighting system inside an aircraft – from ambient lighting with a starry sky to contour lighting and reading lights. Then we control all of the light sources in a uniform manner and turn the interior lighting into a complete experience. We see great potential for innovative lighting concepts for airlines interested in differentiating themselves from the competition,” Dr. Danielzik explained. —

The scientist David L. MacAdam has charted the sensitivity of the human eye in a CIE color diagram. True color sensors compensate for drifts in color so that the eye sees no difference.