Method for achieving light distribution in full color gamut scope based on PWM four primary color LEDs

A four-primary-color, color-gamut technology, applied in the field of full-color-gamut light distribution based on PWM four-primary-color LEDs, can solve the problems of inaccurate color temperature, low luminous flux, and inability to meet customers' basic lighting requirements for smart lights, achieving good use effects, The effect of comfortable lighting and low cost

Active Publication Date: 2017-06-09
HENGDIAN GRP TOSPO LIGHTING
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Problems solved by technology

[0003] At present, the dimming and color matching of smart lights on the market mainly use RGB three-color light distribution. Although it can meet the needs of users for scene lighti

Method used

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  • Method for achieving light distribution in full color gamut scope based on PWM four primary color LEDs
  • Method for achieving light distribution in full color gamut scope based on PWM four primary color LEDs
  • Method for achieving light distribution in full color gamut scope based on PWM four primary color LEDs

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Embodiment 1

[0053] Such as Figure 1~3 As shown, the method for realizing full-color gamut light distribution based on PWM four-primary-color LEDs includes the following steps:

[0054] (1), utilize the integrating sphere spectrometer to obtain the photometric and chromatic performance parameters of each monochrome;

[0055](2), through the photometric and chromatic performance parameters of each monochromatic light, calculate the tristimulus value of each corresponding monochromatic light;

[0056] (3), according to the proportional relationship between the luminous flux and the duty cycle, deduce the functional relationship between the luminous flux and the duty cycle;

[0057] (4), according to the principle of color addition, the tristimulus value of the mixed light is equal to the addition of the tristimulus values ​​of each monochromatic light, and finally the mathematical model of the three primary colors mixed light and the ratio of each monochromatic light in the mixed light are...

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Abstract

The invention discloses a method for achieving light distribution in a full color gamut scope based on PWM four primary color LEDs. The method comprises the following steps of (1) obtaining the photometric and colorimetric performance parameters of each single color; (2) calculating the corresponding tristimulus values of each single color; (3) according to that the luminous flux and the duty ratio is in proportional relationship, deriving the function relationship between the luminous flux and the duty ratio; (4) obtaining the mathematical model of the three primary color light mixing and the proportion of each single color light in the mixed light, and obtaining the color mixture equation set; (5) determining the target color coordinates and color temperature of the mixed light; (6) deriving the function relationship among the chromaticity coordinates, the luminous flux and the duty ratio; and (7) determining the luminous flux of the target color temperature, calculating each duty ration of RGBW, and finally performing outputting, so as to achieve the light distribution object. The method is featured in that the product cost is low, the adjustable color temperature precision is high, the mode is simple, the illumination is comfortable, the usage effect is good, and the like.

Description

technical field [0001] The invention relates to LED light mixing technology, in particular to a method for realizing full color gamut light distribution based on PWM four-primary color LEDs. Background technique [0002] With the gradual development of LED lighting, LED lights have been widely used in my country's indoor and outdoor lighting and other fields, and have replaced traditional lighting equipment such as incandescent lamps and fluorescent lamps, becoming representatives of energy-saving, environmental protection, and intelligent lighting. Among them, the development advantages of intelligent lighting are very obvious. Coupled with the inherent characteristics of LEDs, the light emitted can be better converged, making LED smart lights an important application in the field of LED lighting, widely used in supermarkets, households , office, landscape and other occasions, the market development prospects are considerable. [0003] At present, the dimming and color mat...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00Y02B20/30
Inventor 吴彬强陈欣平翁步升施蓉蓉金梅玲
Owner HENGDIAN GRP TOSPO LIGHTING
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