| abstract |
Lighting unit with at least one LED as a light source, wherein the LED emits primary radiation in the range 300 to 485 nm, this radiation is partially or completely converted into wavelength radiation by phosphors exposed to the primary radiation of the LED, characterized in that the conversion at least with the aid of a phosphor which emits yellow-orange with a peak emission wavelength at 540 to 620 nm and which originates from the class of the Eu-activated sialones, the sialon of the formula M p / 2 Si 12-pg Al p + g O q N 16-q : Eu 2+ obeys, with M = Ca singly or in combination with at least one of the metals Sr or Mg, with q = 0 to 2.5 and p = 0.5 to 3. |