FIELD: physics.
SUBSTANCE: light source comprises one or more light-emitting clusters of a first type and one or more light-emitting clusters of one or more other types, each comprising one or more light-emitting elements, such that, when all light-emitting elements are driven to provide a substantially optimised output intensity, the spectral output of said one or more light-emitting clusters of the first type is substantially balanced by the spectral output of the one or more other light-emitting clusters.
EFFECT: spectrally balanced light source with optimum output intensity.
26 cl, 7 dwg
