Light-emitting diode lighting system and control method thereof

A light-emitting secondary body and lighting system technology, which is applied to lighting devices, lighting and heating equipment, lighting device components, etc., can solve the problem that the brightness exceeds that of the light bulb, and achieve the effects of heat dissipation, energy saving and heat dissipation, and improving the brightness of the screen

Active Publication Date: 2010-06-16
QISDA OPTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, even if the projector is equipped with high-power LED and adopts the above-mentioned lighting control system, it still cannot surpass traditional light bulbs in brightness, such as UHP light bulbs

Method used

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  • Light-emitting diode lighting system and control method thereof
  • Light-emitting diode lighting system and control method thereof
  • Light-emitting diode lighting system and control method thereof

Examples

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Embodiment Construction

[0022] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0023] See image 3 and Figure 4 , image 3 is a schematic diagram of an LED lighting system 30 according to an embodiment of the present invention, Figure 4 It is a schematic diagram of a color cycle frame in an LED lighting system according to an embodiment of the present invention. The light emitting diode lighting system 30 includes a first color light emitting diode 31, a second color light emitting diode 32, a third color light emitting diode 33 and a control circuit 34, the control circuit 34 is electrically connected to the first color light emitting diode The diode 31, the second color light emitting diode 32 and the third color light emitting diode 33, the control circuit 34 controls the first color light emitting diode 31, the second color light emitti...

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Abstract

The invention relates to a light-emitting diode lighting system and a control method thereof, and the lighting system comprises a first color light-emitting diode, a second color light-emitting diode, a third color light-emitting diode and a control circuit. The control circuit is electrically connected with the first color light-emitting diode, the second color light-emitting diode and the thirdcolor light-emitting diode, and the control circuit can sequentially drive the first color light-emitting diode, the second color light-emitting diode and the third color light-emitting diode in a color looping frame with relative duty cycle by control and only drive two of the first color light-emitting diode, the second color light-emitting diode and the third color light-emitting diode at the same time in at least one transition period of the color looping frame. The lighting system can not only improve the screen brightness of a projector of a light-emitting diode light source, but also save more energy and be conductive to heat dissipation in comparison with the technology of simultaneously lighting the three light-emitting diodes.

Description

technical field [0001] The present invention relates to a light-emitting diode (LED) lighting system and a control method thereof, in particular to a light-emitting diode lighting system applied to a projector and a control method thereof. Background technique [0002] Current developments in LED technology have enabled LEDs to be used as light sources in applications requiring high brightness, such as many projection display systems. See figure 1 , figure 1 It is a schematic diagram of a projection display system 1 using LED light sources in the prior art. Projection display system 1 includes LED driver circuitry 11 , LED array 12 , illumination optics 13 , imaging device 14 , projection optics 15 , viewing screen 16 and control circuitry 17 . The LED driver 11 includes at least three different current sources for providing power to the red, green and blue LEDs of the LED array 12, thereby forming a separate circuit for each color. Light emitted by LED array 12 illumina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S10/02F21V23/00H05B37/02G03B21/14F21Y101/02
Inventor 简志雄
Owner QISDA OPTRONICS (SUZHOU) CO LTD
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