Many surfaces as for example paper or clothes contain luminescence colors them, animated in the violet and/or close ultraviolet area of the electromagnetic spectrum, in the visible area of the electromagnetic spectrum shine. Light-emitting diodes the white light emit radiate not enough in the violet and/or close ultraviolet area of the spectrum to receive a natural colour impression of these surfaces for the viewer. If several light-emitting diodes are used they in the visible one as well as in the violet and/or close ultraviolet area of the spectrum these surfaces irradiate at the same time changed themselves, however, e.g., by different temperature drifts of the light-emitting diodes, the spectrum of the single light-emitting diodes and with it also the colour impression for the viewer. Also caused, particularly on short distances between the lighting and the surface, the distance between the multi colour light-emitting diodes lead to different colour effects and brilliant effects.
Now by means of spegg C200 ceramic and spegg C300 are LED`s in the whole visible spectral range from ultraviolet up to the infrared one shines. Ideally suitably for colour measuring instruments and spectroscopic uses or lighting like the daylight are.