Apparatus for Controlling Light Emitting Devices
First Claim
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1. Apparatus for controlling light emitting devices, comprising:
- at least two light emitting devices with different spectrums;
at least two power measuring devices for respectively measuring input power of the at least two light emitting devices; and
at least two feedback controllers for receiving at least two power signals of the at least two power measuring devices, and respectively generating a control signal according to the at least two power signals.
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Abstract
The present invention is related to the apparatus for driving the light emitting devices with different colors. The input powers of the light emitting devices are measured and controlled by a feedback control system to maintain constant, and by setting different power inputs to the different light emitting devices different stable colors are produced.
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Citations
21 Claims
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1. Apparatus for controlling light emitting devices, comprising:
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at least two light emitting devices with different spectrums; at least two power measuring devices for respectively measuring input power of the at least two light emitting devices; and at least two feedback controllers for receiving at least two power signals of the at least two power measuring devices, and respectively generating a control signal according to the at least two power signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for controlling light emitting devices, comprising:
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at least two light-emitting diodes (LEDs) with different spectrums; at least two power supplies for respectively providing DC power to inputs of the at least two LEDs; at least two power measuring devices for respectively measuring input power of the at least two LEDs; and at least two feedback controllers for receiving at least two power signals of the at least two power measuring devices, and respectively generating a control signal according to the at least two power signals. - View Dependent Claims (10, 11, 12)
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13. Apparatus for controlling light emitting devices, comprising:
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at least two light-emitting diodes (LEDs) with different spectrums; a DC voltage power for providing DC voltage to inputs of the at least two LEDs; at least two power measuring devices for respectively measuring input power of the two LEDs; and at least two feedback controllers for receiving at least two power signals of the at least two power measuring devices, and respectively generating a control signal according to the at least two power signals. - View Dependent Claims (14, 15, 16, 17)
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18. Apparatus for controlling light emitting devices, comprising:
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at least two light-emitting diodes (LEDs) with different spectrums; a DC voltage power for providing DC voltage to the two LEDs; at least two power measuring devices for respectively measuring input power of the at least two LEDs; and at least two feedback controllers for receiving at least two power signals of the at least two power measuring devices, and respectively generating a control signal according to the at least two power signals. - View Dependent Claims (19, 20, 21)
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Specification