A COLOR TEMPERATURE TUNABLE LIGHTING DEVICE AND A LUMINAIRE

摘要

A color temperature tunable lighting device 100 for emitting light 156, 152, 154 of a color close to or on a black body line and a luminaire is provided. The color temperature tunable lighting device 100 comprises a light source 106 and a luminescent element 108. The light source 106 emits light 156 of a color close to the black body line. The luminescent element 108 comprises luminescent materials to tune the correlated color temperature of the light emission of the color temperature tunable lighting device 100. The luminescent materials comprise a first organic luminescent material and a second organic luminescent material. The first organic luminescent material absorbs a part of the light 156 emitted by the light source or by a second organic luminescent material and converts a part of the absorbed light to a first light emission 152 at least in the red spectral range. The second organic luminescent material absorbs a part of the light emitted by the light source or emitted by the first organic luminescent materials and converts a part of the absorbed light to a second light emission 154 at least in the yellow spectral range.