ILLUMINATION SYSTEM

摘要

The invention relates to an illumination system (Sl) comprising: a light generating element (TL) comprising a first light source (Ll) for emitting light of a first primary color (Cl) and comprising a second light source (L2) for emitting light of a second primary color (C2) which is distinct from the first primary color (Cl). The light generating element is switched periodically on with a period (P) during an on-time-window (TO) within the period. Due to a difference between the rise times and decay times of the first and second light source, a temporally changing output light is obtained within the period. The illumination system further comprises a light modulator (Ml) which selects a portion of the temporally changing output light. The light modulator is constructed to emit light from the illumination system only during an output-time- window (Tl) within the period. By adapting the duration of the period, the duration of the on-time- window and the position and duration of the output-time- window, light of a predetermined color can be emitted from the illumination system.