H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 35/00 (2006.01) H05B 33/02 (2006.01) H05B 39/04 (2006.01)
Patent
CA 2520233
The present invention relates to an illumination system having at least two light sources of which at least one light source comprises an LED (11), the illumination system furthermore comprising a driver device (22) that is designed to operate at least the one LED (11) with a DC signal; a sensor device (12) with the aid of which at least one feature of the light output by the illumination system can be determined; an actual value storage device (14) that is connected to the sensor device (12) and in which an actual value of the at least one feature can be stored; a setpoint selection device (18) in which a setpoint of the at least one feature can be stored; and a control device (16) that is connected on the input side to the actual value storage device for the purpose of transmitting the actual value of the at least one feature, and to the setpoint selection device (18) for the purpose of transmitting the setpoint of the at least one feature, and which is designed to provide the driver device (22) at its output with a control signal in such a way that the driver device changes a characteristic of the DC signal used for driving the at least one LED (11) in such a way that the actual value approaches the setpoint. The present invention relates, moreover, to a method for operating an illumination system having at least two light sources of which at least one light source comprises an LED (11), comprising the following steps: a) determining the actual value of at least one feature of the light output by the illumination system; b) comparing the actual value of the at least one feature with a prescribable setpoint of the at least one feature; and c) driving the at least one LED with a DC signal in such a way that the actual value approaches the set point.
Biebl Alois
Hackenbuchner Stefan
Hirschmann Guenther
Weitzel Reinhard
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
LandOfFree
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