The study presented in this paper aims to evaluate if and how the environment affects the circadian impact of a light source by predicting circadian stimulus (CS) resulting from the exposure to different light scenes, using equations reported in studies by Rea etal. The main findings are: (1) Above 600lx at eye level the increase of CS is little; (2) Between 50lx and 200lx at the eye level an increase of only 50lx determines a significant increase of CS; (3) Light sources with correlated colour temperatures between 2900K and 4200K have similar impacts on the circadian system according to the calculation method used; (4) Even an almost neutral environment affects the circadian impact of a light source.
Indoor artificial lighting: Prediction of the circadian effects of different spectral power distributions / Bellia, Laura; Pedace, Alessia; Barbato, G.. - In: LIGHTING RESEARCH & TECHNOLOGY. - ISSN 1477-1535. - 46:6(2014), pp. 650-660. [10.1177/1477153513495867]
Indoor artificial lighting: Prediction of the circadian effects of different spectral power distributions
BELLIA, LAURA;PEDACE, ALESSIA;
2014
Abstract
The study presented in this paper aims to evaluate if and how the environment affects the circadian impact of a light source by predicting circadian stimulus (CS) resulting from the exposure to different light scenes, using equations reported in studies by Rea etal. The main findings are: (1) Above 600lx at eye level the increase of CS is little; (2) Between 50lx and 200lx at the eye level an increase of only 50lx determines a significant increase of CS; (3) Light sources with correlated colour temperatures between 2900K and 4200K have similar impacts on the circadian system according to the calculation method used; (4) Even an almost neutral environment affects the circadian impact of a light source.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
