Device for controlling a lamp including at least two LEDs emitting light in different colors
The device ( 10 ) for controlling a lamp including LEDs emitting light in at least two different colors comprises at least two current sources ( 14,16,18 ) of which each is assigned to a group of LEDs ( 20,24,26 ) emitting light of the same colors; and is arranged to supply these LEDs ( 20,24,26 ) w...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The device (
10
) for controlling a lamp including LEDs emitting light in at least two different colors comprises at least two current sources (
14,16,18
) of which each is assigned to a group of LEDs (
20,24,26
) emitting light of the same colors; and is arranged to supply these LEDs (
20,24,26
) with a continuous current having an adjustable amplitude. Further, the device (
10
) comprises a control unit (
30
) for controlling the current sources (
14,16,18
) to adjust the amplitudes of the currents generated by the current sources (
14,16,18
) so as to generate a desired color of the mixed light emitted by the totality of the LEDs (
20,24,26
), and a setting unit (
36
) for influencing the total current of all current sources (
14,16,18
) to thus set the intensity of the mixed light. |
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