Correlated Color Temperature Measuring and Adjustment System

This paper will present a Correlated Color Temperature (CCT) measurement and adjustment system. The system allows the fixing of a CCT and the control of lighting fixtures so that they emit light corresponding to the prescribed CCT. Lighting fixtures, even if they are made by the same manufacturer, may have different characteristics, for example due to the technological dispersion of the parameters or the aging of the elements that generate light (eg LEDs). Using the system described in this paper, CCT can be adjusted in the range 2900K ÷ 6300K with an error of less than ± 25K for different levels of illumination.