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AssigneeU.S. Philips Corporation
InventorsSimon H. A. Begemann, Ariadne D. Tenner, Gerrit J. Van Den Beld
Estimating the term…
A lighting system having at least one light source for supplying artificial light and a control unit for controlling the light source. The light source is of the type having an adjustable color temperature. The control unit is provided with a control signal form a signal from a signal generator. The signal generator is dependent on the mean daylight level. The control unit is arranged to adjust the color temperature of the light source in dependence on a predetermined relationship between the mean daylight level and the color temperature of the artificial light. The lighting system will provide artificial light which will when the daylight level, as measured on an office desk, increases from approximately 400 lux to approximately 800 lux, increase the color temperature from approximately 3300 K to approximately 4300 K.
A lighting system, comprising at least one light source for supplying artificial light and a control unit for controlling the light source, the control unit comprising means for forming a control signal which is dependent on a daylight level, characterized in that the light source is of the type having an adjustable colour temperature, and the control unit is arranged to adjust the colour temperature of the light source in dependence on a predetermined relationship between the daylight level and the colour temperature of the artificial light.
Dependencies are inferred from the claim text.