PHOTOMETRIC PARAMETERS OF LED LUMINAIRES WITH SWITCHABLE CORRELATED COLOUR TEMPERATURE

AbstractAt present, there are lights on the market that are capable of emitting white light with an adjustable correlatedcolor temperature. The advantage of these luminaires is the possibility of changing the correlated colortemperature, for example, due to a change in the function of the room in which they are installed, with noreplacement of the lamps. The disadvantage of such a correlated color temperature setting is that this setting isperformed directly on the luminaire and it is not possible to set the correlated color temperature with the controlsystem. When changing the color temperature, in most cases, it is undesirable to change the other photometricparameters. In this paper, attention is paid to changes of the photometric parameters caused by changing thecorrelated color temperature.Key wordsLED, correlated colour temperature, luminous flux, tunable-whit