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Method and system for determining maximum brightness of RGB LED light source matching target chromaticity

A technology of LED light source and maximum brightness, applied in electrical components and other directions, can solve the problems of RGBLED light source unable to mix light, unable to determine the mixing ratio of RGBLED light source, low dimming efficiency, etc., to reduce the number of debugging, improve accuracy, The effect of improving dimming efficiency

Active Publication Date: 2020-01-10
苏州欧切斯实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, only given the target chromaticity information, it is impossible to determine the mixing ratio of each light color LED of the RGB LED light source
At the same time, even if the brightness and chromaticity information of the target light color are given, there may be a problem that the target brightness exceeds the maximum brightness that the light source can mix. When the maximum brightness of the light source is exceeded, the RGB LED light source will not be able to mix light. In use, it needs to be adjusted repeatedly during dimming, and the dimming efficiency is low
Determining the maximum brightness when the RGB LED light source matches the target chromaticity has very important engineering application value, but there is no report on the determination method of the maximum brightness when the RGB LED light source matches the target chromaticity and as a dimming parameter

Method used

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  • Method and system for determining maximum brightness of RGB LED light source matching target chromaticity
  • Method and system for determining maximum brightness of RGB LED light source matching target chromaticity
  • Method and system for determining maximum brightness of RGB LED light source matching target chromaticity

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Embodiment 1

[0029] In the technical solutions disclosed in one or more embodiments, such as figure 1 As shown, a method for determining the maximum brightness of an RGB LED light source matching the target chromaticity includes the following steps:

[0030] Step 1. Obtain target chromaticity data;

[0031] Step 2. Obtain the absolute tristimulus values ​​of the LED light sources of each color R, G, and B at their maximum control signal values ​​measured by the spectroradiometer;

[0032] Step 3. Establish a light mixing equation set based on the relationship between the target chromaticity and the absolute tristimulus value, solve the light mixing equation set according to the acquired target chromaticity data and absolute tristimulus value, and obtain the normalization of LEDs of R, G, and B colors brightness matching factor;

[0033] Step 4. Calculate the maximum brightness matching coefficient according to the normalized brightness matching coefficient, and obtain the maximum brightn...

Embodiment 2

[0065] This embodiment provides a system for determining the maximum brightness of an RGB LED light source matching the target chromaticity, such as figure 2 shown, including:

[0066] The first acquisition module: used to acquire target chromaticity data;

[0067] The second acquisition module: used to acquire the absolute tristimulus values ​​of the LED light sources of R, G, and B colors at their maximum control signal values ​​measured by the spectroradiometer;

[0068] Normalized luminance matching coefficient calculation module: used to establish the mixed light equations according to the relationship between the target chromaticity and the absolute tristimulus value, solve the mixed light equations according to the acquired target chromaticity data and the absolute tristimulus value, and obtain R, G , B normalized brightness matching coefficient of LEDs of various colors;

[0069] Maximum brightness numerical calculation module: used to calculate the maximum brightne...

Embodiment 3

[0071] This embodiment provides an electronic device, including a memory, a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, the steps described in the method in Embodiment 1 are completed.

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Abstract

The invention provides a method and a system for determining maximum brightness of RGB LED light source matching target chromaticity. The method comprises the following steps: acquiring target chromaticity data; obtaining absolute tristimulus values of R, G and B color LED light sources at their maximum control signal values; establishing a mixed light equation group according to the relationshipbetween the target chromaticity and the absolute tristimulus values, and solving the mixed light equation group according to the obtained target chromaticity data and the absolute tristimulus values so as to obtain normalized brightness matching coefficients of R, G and B color LEDs; and calculating the maximum brightness matching coefficient according to the normalized brightness matching coefficient and obtaining the maximum achievable brightness value when the RGB LED light source matches the target chromaticity according to the maximum brightness matching coefficient and the Y stimulationvalue in the obtained absolute tristimulus values. The problem that the RGB LED light source cannot mix light due to exceeding the maximum brightness during dimming can be effectively avoided by determining the maximum brightness which can be achieved by the RGB LED light source when matching the target chromaticity.

Description

technical field [0001] The present disclosure relates to the technical field related to LED lighting, in particular, to a method and system for determining the maximum brightness of an RGB LED light source matching a target chromaticity. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The outstanding advantages of LED light sources over traditional lighting sources, such as higher efficiency, energy saving, longer life, and convenient dimming, have made them widely used in many fields. In the field of general lighting, white light is usually used for lighting. Through the light mixing of multi-color LED light sources, and by adjusting the proportion of LEDs of various colors, the target light color can be obtained to meet people's lighting needs. [0004] RGB LED light source is a typical white light realization method. Compared with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/10
Inventor 章夫正
Owner 苏州欧切斯实业有限公司
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