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Lighting system with at least two lighting source and method for operating the same

A lighting system and light source technology, applied in the field of lighting systems, can solve the problems of disturbing color trajectory, high switching loss, offset, etc., and achieve the effect of simple realizability and improved reliability

Inactive Publication Date: 2006-05-10
PATENT TREUHAND GESELLSCHAFT FUER ELECTRIC GLUEHLAMPEN M B H
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the measures known from the prior art, it is also necessary to choose one of the disadvantages, namely interference or color locus shift or high switching losses

Method used

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  • Lighting system with at least two lighting source and method for operating the same

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Embodiment Construction

[0022]Fig. 1 shows the schematic circuit diagram of the lighting system of the present invention. The circuit schematic comprises a plurality of light sources combined in a module 10, at least one of which (as shown schematically) is an LED 11 operated with a DC signal. The light output from the module 10 is detected by a sensor device 12 with which at least one characteristic of the light output by the lighting system can be determined. Consider color temperature, brightness or color locus as features. At least one characteristic determined by sensor device 12 is stored in actual value storage device 14 . The actual value storage device 14 can be designed to store values ​​of a plurality of characteristics. The actual value of at least one characteristic is supplied to the control device 16 . The control device additionally receives the desired value of at least one characteristic provided by the desired value selection device 18 . The target value selection device can al...

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Abstract

The invention relates to a lighting system with at least two light sources, wherein at least one light source comprises an LED (11), wherein the lighting system further comprises driving means (22) for driving at least said LEDs (11) with a direct current signal; sensor means (12), with which at least one characteristic of the light output by the lighting system can be determined; an actual value storage device (14), which is connected to the sensor device (12) and in which the actual value of at least one characteristic can be stored; setpoint value Selection device (18), wherein the rated value of at least one characteristic can be stored; Control device (16), it is connected on the input side with the actual value storage device and the rated value selection device (18) and on its output to The driver (22) supplies a control signal such that the driver modifies the characteristic of the DC signal used to drive the at least one LED (11) in such a way that the actual value approaches the setpoint value. Furthermore, the invention also relates to a method for operating a lighting system with at least two light sources.

Description

technical field [0001] The invention relates to a lighting system with at least two light sources, wherein at least one light source comprises an LED. Furthermore, the invention also relates to a method for operating such a lighting system. Background technique [0002] Lighting systems of the kind described are sufficiently known in the prior art, where the simplest method for operating LEDs consists in connecting the LEDs together with a series resistor to a DC power supply. The series resistor is used to limit the LED current I F (on current). By changing this series resistance, the conduction current I can be changed F , thereby also changing the brightness of the light emitted by the light-emitting diode. Dimming capabilities of systems that may include light emitting diodes and other light emitting devices as light sources can be achieved in this simple manner. However, the problem is that in some LEDs, especially InGaN-LEDs, the conduction current I F There is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H05B44/00H01L33/00H05B41/38
CPCH05B35/00H05B45/22H05B45/20
Inventor A·比布尔S·哈肯布赫纳G·希尔施曼R·维策尔
Owner PATENT TREUHAND GESELLSCHAFT FUER ELECTRIC GLUEHLAMPEN M B H