| abstract |
The invention provides a provides a lighting unit ( 100 ) comprising a first light source ( 110 ), a second light source ( 210 ), a first wavelength converting ( 1100 ), a second wavelength converting element ( 2100 ), wherein the lighting unit further comprises a transport infrastructure ( 20 ) configured to arrange the first light source, the second light source, the first wavelength converting element, and the second wavelength converting element in a first configuration or a second configuration by transport of one or more of these, wherein in the first configuration and the second configuration the lighting unit provides lighting unit light having substantially the same color point while having different color rendering indices. With such lighting unit, it is possible to switch between high CRI-low efficiency and low CRI-high efficiency at a given color temperature (or color point). |