Illumination system having at least two light sources, and a method for operating such an illumination system
First Claim
1. An illumination system having at least two light sources of which at least one light source comprises an LED (11), characterized in that it furthermore comprises:
- 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.
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Accused Products
Abstract
An illumination system has at least two light sources of which at least one light source includes an LED, and a driver device designed to operate at least the one LED with a DC signal; a sensor device for determining at least one feature of the light output; an actual value storage device connected to the sensor device for storing an actual value of the feature; a setpoint selection device for storing a setpoint of the feature; and a control device connected on the input side to the actual value storage device for of transmitting the actual value, and to the setpoint selection device for transmitting the setpoint, and which provides the driver device with a control signal that changes a characteristic of the DC signal used for driving the LED such that the actual value approaches the setpoint.
16 Citations
15 Claims
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1. An illumination system having at least two light sources of which at least one light source comprises an LED (11), characterized in that it furthermore comprises:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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14. 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:
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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 setpoint.
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Specification