The invention relates to a lighting device comprising a light source (1) that emits incoherent light with a total radiation power P and has a radiation-emitting area (S) divided into a plurality of subareas (Si), wherein assigned to each subarea (Si) is a light ray (2) having a radiation power Pi and...http://www.google.fr/patents/US8174036?utm_source=gb-gplus-shareBrevet US8174036 - Lighting device
