Temperature color drift real-time correction device and method for LED multi-primary-color lamp

Abstract

The invention relates to a temperature color drift real-time correction device and method for an LED multi-primary-color lamp. The temperature color drift real-time correction device comprises a computer, a temperature sensor and a brightness and color measuring instrument; and the LED multi-primary-color lamp is provided with a control unit comprising a color management arithmetic unit. The method comprises the following steps of: 1) actually measuring the temperature curve original data of the lamp; 2) constructing a dynamic polynomial fitting function, and sending the dynamic polynomial fitting function to the color management arithmetic unit for storing the dynamic polynomial fitting function; and 3) obtaining brightness and color data including color coordinates (x, y) and brightnessvalues Y at different temperatures, and correcting temperature color drift data in real time. The temperature color drift real-time correction device and method have the practicability of large-scalemass production; and lamp-by-lamp measurement on a production line is not needed. With the temperature color drift real-time correction device and method adopted, for various light color outputs including color output, color temperature output and color coordinate output in a full color gamut, temperature color drift caused by temperature change can be greatly alleviated and even eliminated, and color drift of white light and various mixed color light at different temperatures is avoided. The device and method have the advantages of simple operation, efficient process, reliable data and good temperature color drift correction effect.

Description

technical field [0001] The invention relates to LED multi-primary color lamps, in particular to a temperature and color drift real-time correction device and method for LED multi-primary color lamps. Background technique [0002] Multi-primary light-emitting diode (Light Emitting Diode, abbreviated as LED) lamps with at least three primary colors are widely used in architectural lighting, professional lighting, performance lighting and other fields. Due to the sensitivity of LED to operating temperature, its luminous intensity, dominant wavelength and color coordinates will change with temperature, and the output of power supply and driver chip will also change with temperature. These factors cause the light and color output of LED multi-color lamps to deviate from the nominal value to varying degrees due to the difference between the ambient temperature and the working temperature. When LED multi-primary color luminaires emit light mixed with multiple primary colors, such ...

AI Technical Summary

Problems solved by technology

[0005] The technical problems of the temperature and color drift real-time correction device for LED multi-primary-color lamps and lanterns of the present invention are solved by the following technical solutions

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