Lamps and control circuit
AssigneeLextar Electronics Corporation
InventorsChun-Kuang Chen, Feng-Ling Lin, Po-Shen Chen, Hui-Ying Chen, Tung-Yu Chen
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Abstract
An embodiment of the invention provides a lamp comprising a first emitting device, a second emitting device, and a control signal generation device. The control signal generation device generates a first control signal and a second control signal to control the first emitting device and the second emitting device, so that a first light flux generated by the first emitting device is equivalent to a second light flux generated by the second emitting device, wherein the second control signal is generated according to the first control signal.
Claims20
A lamp, comprising:
- a first emitting device having a first emitting efficiency;
- a second emitting device having a second emitting efficiency;
- and
- a control signal generation device for generating a first control signal and a second control signal to control the first emitting device and the second emitting device, so that a first light flux generated by the first emitting device is equivalent to a second light flux generated by the second emitting device, wherein the second control signal is generated according to the first control signal, and the first emitting efficiency is greater than the second emitting efficiency.
A control circuit for controlling a color temperature of a lamp, comprising:
- a pulse signal generation device for generating a first control signal;
- a buffer device for receiving and buffering the first control signal;
- an inverter for receiving the first control signal to generate an inverted first control signal;
- and
- a compensation device for receiving a compensation signal and the inverted first control signal to generate the second control signal, wherein the first control signal controls a first emitting device in the lamp and the second control signal controls a second emitting device in the lamp.
Dependencies are inferred from the claim text.