A NEW SCANNING SKY SIMULATOR
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A sky simulator has been developed to study daylighting systems on scale models (diffuse component of daylight). This apparatus is of a completely new concept (scanning sky simulator) and has numerous advantages in comparison with similar devices. It allows in particular the reproduction of any sky condition and distinguishes itself by easy calibration, reduced maintenance and moderate electric consumption. The simulator is equipped with a measuring and visualisation system which allows the user to simultaneously carry out quantitative studies (profile of daylight factors) and qualitative studies (visual lighting effects). In this paper, a description of the system and its functioning as well as an application example are given.