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LED light source dimming method and dimming system

A technology of LED light source and dimming, applied in electrical components and other directions, can solve the problem of difficult to adjust the color temperature and luminous flux of LED white light source according to requirements.

Active Publication Date: 2022-04-19
GUANGZHOU UNIONLUX ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to overcome at least one defect (deficiency) of the above-mentioned prior art, and provides a dimming method and a dimming system for an LED light source, which are used to solve the problem that it is difficult to adjust the color temperature and luminous flux of an LED white light source according to requirements.

Method used

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  • LED light source dimming method and dimming system
  • LED light source dimming method and dimming system
  • LED light source dimming method and dimming system

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Embodiment 1

[0056] This embodiment provides a method for dimming an LED light source, which is used for dimming an LED light source. The LED light source includes a first color temperature LED light source and a second color temperature LED light source, the color temperature of the first color temperature LED light source and the second color temperature LED light source The range is different. The first color temperature LED light source and the second color temperature LED light source can respectively adopt LED chips of different wavelengths and / or LED chips of different primary colors and / or different phosphor powder formulations and / or different phosphor layer thicknesses, etc., thereby realizing the first The color temperature ranges of the color temperature LED light source and the second LED light source are different.

[0057] The dimming target of this embodiment is to make the luminous flux Pm of the first color temperature LED light source and the second color temperature LED...

Embodiment 2

[0181] This embodiment provides an LED light source dimming system. The LED light source includes a first color temperature LED light source and a second color temperature LED light source. The first color temperature LED light source and the second color temperature LED light source have different color temperature ranges.

[0182] Figure 6 It is the composition diagram of the LED light source dimming system provided by this embodiment, as Figure 6 As shown, it includes a relationship establishment module 21 and a current regulation module 22:

[0183] A relation establishing module 21, configured to establish a dimming relation according to the first relation, the second relation and the fitting relation;

[0184] The first relational expression includes the color temperature T of the LED light source with the first color temperature under the condition that the LED light source with the first color temperature is powered on alone. 1 with current A 1 Relational expressi...

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Abstract

The invention relates to an LED light source dimming method and system, and the method comprises the steps: building a dimming relational expression according to a first relational expression, a second relational expression and a fitting relational expression; the dimming relational expression comprises a relational expression between the fitted color temperature T3 and the current A31 of the first color temperature LED light source and a relational expression between the fitted luminous flux Pm3 and the current A32 of the second color temperature LED light source under the condition that the first color temperature LED light source and the second color temperature LED light source are powered on; and the current A31 of the first color temperature LED light source and the current A32 of the second color temperature LED light source are adjusted according to the dimming relational expression so that the fitted color temperature T3 can meet the set color temperature value, and the fitted luminous flux Pm3 is adjusted by adjusting the current A31 and the current A32 according to the dimming relational expression and the needed set luminous flux. Under the condition that the color temperature and the color rendering indexes Ra and R9 of the LED light source are basically unchanged, the luminous flux of the LED light source can be continuously adjusted within a certain range.

Description

technical field [0001] The present invention relates to the technical field of lighting sources, and more particularly, to a dimming method and a dimming system for an LED light source. Background technique [0002] LED has the characteristics of energy saving, environmental protection and long life, and is widely used in lighting, backlight display and other fields. However, with the improvement of people's quality of life, the requirements for lighting sources are getting higher and higher, and there are higher requirements for the color rendering index of different brightness in the lighting process. At present, the functions of LED products are becoming more and more diversified and intelligent, but it is difficult to meet this demand for a single light source, while integrated LEDs can meet the requirements of different color temperatures, different color rendering indexes and different brightness requirements in a single light source. Different color temperature, diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/20
CPCH05B45/20
Inventor 高权李虎杨枢要陈国平
Owner GUANGZHOU UNIONLUX ELECTRONICS TECH CO LTD