Unitl recently, daylighting has been provided by passive products, that effectively bring FREE sunlight into the building interiors. However, sometimes the quality of sunlight would vary with the time of day. Now, active daylighting products provide a more even level of sunlight over the course of the day by incorporating mirrors in the dome collector that track the arc of the sun via GPS. Your specific application may only require using passive solar tubes. But when a higher, more consistent quality of light is needed, an active daylighting system will provide the quality of light you are looking for.
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