| abstract |
An illumination unit comprising at least one LED as a light source, wherein the LED emits primary radiation in the range of 300 to 570 nm, which radiation is partially or completely converted to longer wavelength radiation by phosphors exposed to the primary radiation of the LED, the conversion being at least assisted a nitride-containing phosphor which emits at a wavelength of the peak emission at 430 to 670 nm and which comes from the class of Ce- the Eu-activated nitrides, oxynitrides or sialones. |