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DEVICE FOR CONTROLLING LIGHT SOURCES

  • US 20100045191A1
  • Filed: 12/17/2007
  • Published: 02/25/2010
  • Est. Priority Date: 12/22/2006
  • Status: Abandoned Application
First Claim
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1. Illumination system (1), comprising:

  • at least one light source (2);

    a control system (3) for controlling the light sources (2), the control system (3) comprising a sensor system (4) with at least one light sensor (5) for sensing ambient light (L1) and for generating a sensor output signal (M) representing the sensed light level, wherein the control system (3) is designed for controlling the light sources (2) in relation to the sensor output signal (M);

    wherein the control system (3) is designed to automatically calibrate the sensor system (4);

    wherein the control system (3) is designed to measure the ambient illumination level (MMIN) at a moment of calibration and to store this measured ambient illumination level into a memory (7);

    wherein the control system (3) is designed to monitor the ambient illumination level and compare this with the value (MMIN) stored in said memory (7), and, if the comparison shows that the ambient illumination level is lower than the value (MMIN) stored in said memory (7), to determine when the ambient illumination level reaches a new minimum value and to automatically perform a calibration procedure when the ambient illumination level reaches the new minimum value.

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