| abstract |
The invention relates to a lighting system ( 100 ) and a method for controlling lighting conditions in a room (R). The lighting system ( 100 ) comprises a controller ( 101 ) for controlling internal light sources ( 121, 122 ) and at least one actuator ( 131, 141 ) for changing the amount of external light entering the room (R). Moreover, at least one sensor ( 111,112, 31,141 ) is provided for detecting a parameter relating to the actual or to a desired lighting level of the room (R). Thus it is possible to control the lighting of the room (R) according to a predetermined schedule, particularly with a circadian rhythm that can reduce delirium in a patient (P). The actuator may for example comprise means ( 141 ) for closing or opening curtains ( 142 ) in front of a window (W). |