Method capable of continuously adjusting color temperature and brightness of LED light

A bright and mild technology, applied in the circuit layout of electric lamps, lighting devices, light sources, etc., can solve the problems of narrow color temperature adjustment range, difficulty in continuous linear adjustment of color temperature, and difficulty in maintaining stability for a long time. The effect of simple color temperature adjustment

Inactive Publication Date: 2012-10-31
上海亮硕光电子科技有限公司
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in order to overcome the problems that the existing white LED lamps are difficult to achieve continuous linear adjustment of color temperature, the range of color temperature adjustment is narrow, and it is difficult to maintain its stability for a long time, a continuously adjustable LED lamp color temperature is provided. method of brightness

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  • Method capable of continuously adjusting color temperature and brightness of LED light
  • Method capable of continuously adjusting color temperature and brightness of LED light
  • Method capable of continuously adjusting color temperature and brightness of LED light

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Embodiment Construction

[0024] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0025] A method for continuously adjusting the color temperature and brightness of an LED lamp has the following steps: first, select a cool white LED and a warm white LED, the color temperature range of the cool white LED is 4000K-7000K, and the color temperature range of the warm white LED is 2700K ~ 4000K, the number of cold white LEDs and warm white LEDs is at least one; the above selected cool white LEDs form a series circuit, and are connected in series with the cool white control circuit; the above selected warm white LEDs form a series circuit , and in series with the warm white light control circuit; adjust the pulse width through the corresponding co...

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Abstract

The invention relates to a method capable of continuously adjusting color temperature and brightness of a LED (light-emitting diode) light. The method comprises the steps as follows: firstly, selecting a cold white light LED and a warm white light LED; forming the selected cold white light LED into a series return circuit to connect in series with the warm white light LED; forming the selected warm white light LED into a series return circuit to connect in series with the cold white light LED; adjusting the pulse width according to a corresponding cold white light controlling circuit and a corresponding warm white light controlling circuit; providing the specific driving current for the return circuits of the cold white light LED and the warm white light LED by adjusting the pulse width; and therefore, obtaining the required color temperature and brightness. The method has a simple process and is easiness in popularization. Besides, the method can realize the continuous change of the color temperature range from 2700K to 7000K, maintain the characteristic stability of the color temperature and the light passing of the LED even if the LED lights up for a long time, and adjust the brightness change from 0 to 100%.

Description

technical field [0001] The invention relates to the technical field of white LED lighting adjustment, in particular to a method for continuously adjusting the color temperature and brightness of white LED lamps. Background technique [0002] At present, with the rise of white LED lighting, various intelligent lighting control technologies are also constantly innovating. But the main focus is still on the adjustment of the brightness of the light, and the development needs of modern home life are not only satisfied with the adjustment of the brightness, but also hope that the color temperature of the light can be adjusted synchronously at any time according to one's own wishes. [0003] At present, there are generally the following methods for adjusting the color temperature of white LED lights: [0004] 1. Use red, green, and blue chips to separately drive and synthesize white light and realize adjustment. In this scheme, the forward voltage and light output of the red, gre...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 曾宇辉楼志斌尹椿荣陈立新金强李喆
Owner 上海亮硕光电子科技有限公司
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