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| Dr. Susanne Fleischer - Using light to provide stimulation |
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"The psychological effect of variable artificial lighting situations on people" is the title of Susanne Fleischer's dissertation for the Swiss Federal Institute of Technology (ETH) in Zurich. Her results provide striking proof that the disparate nature of office activities demands different illuminance levels and a balance between direct and indirect light. The lighting expert sums it up as follows: "More detailed consideration of the effect of three variable influencing factors (brightness distribution, light colour and illuminance) makes it possible to design lighting scenarios that cater for requirements in terms of type of activity, stimulation and well-being. In the process, artificial light is used as a stimulant within the confines of normal office lighting systems and without increasing energy consumption." |
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Subjects assessed lighting intensity and its indirect component very differently depending on application area. For screen-based work, they preferred direct light, for desk-based work satisfaction improved the higher the indirect component was. In both cases, a wish for higher illuminance levels was expressed..
Left: VDT work zoom
Right: Desk work zoom
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low satisfaction
high satisfaction
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Zumtobel
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