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A method to realize constant ratio of output luminous flux of multi-wavelength LED light source

A technology of LED light source and luminous flux, applied in the direction of light source, electric light source, lighting device, etc., can solve the problem of waste of light source, increase cost, etc., and achieve the effect of prolonging life.

Active Publication Date: 2015-11-18
PUTIAN INTELLIGENT LIGHTING INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the direct replacement of the whole light source causes waste and increases the cost.

Method used

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  • A method to realize constant ratio of output luminous flux of multi-wavelength LED light source
  • A method to realize constant ratio of output luminous flux of multi-wavelength LED light source

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Experimental program
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Embodiment Construction

[0019] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0020] figure 1 It is a flowchart of a method for realizing a constant ratio of output luminous flux of a multi-wavelength LED light source according to an embodiment of the present invention. figure 2 It is the spectral distribution diagram of sub-light sources with peak wavelengths of 300nm (curve a), 500nm (curve b) and 700nm (curve c), respectively. Specific steps are as follows:

[0021] a. Set the sub-light source with a peak wavelength of 500nm in the combined LED light source as the main control sub-light source, and its ideal output luminous flux is 1500lm, and set the upper and lower limits of its output luminous flux value, which are respectively ±10% of the ideal output luminous flux , that is, the upper limit is 1650lm and the lower limit is 1350lm; the ideal output luminous flux ratios of the sub-light sources with peak wavelengths ...

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Abstract

The invention discloses a method for realizing a constant output light flux proportion of a multi-wavelength light emitting diode (LED) light source. A proportion of an output light flux value of each sub light source in an LED combined light source during working to an output light flux of a main control sub light source; the proportion is compared with a set upper limit value and a set lower limit value; and the working current of the corresponding sub light sources exceeding a range is controlled, so that the output light flux value can be adjusted, and the proportion of the output light fluxes between the sub light sources and the main control sub light source can be returned back to the set range until an alarm condition is accorded. By the method, the output light fluxes of the sub light sources are adjusted and compensated, and the output light flux of the main control sub light source is controlled, so that the energy consumption of the LED light source is reduced, and the service life of the LED light source is prolonged.

Description

technical field [0001] The invention relates to the field of LED lighting and display, in particular to a method for realizing a constant ratio of output luminous fluxes of multiple wavelength light beams. Background technique [0002] At present, light-emitting diodes (LEDs) are gradually being used in road lighting, office lighting, home lighting, industrial lighting, agricultural lighting and other fields due to their long life, low power consumption, high luminous efficiency, easy control and environmental protection. People use LED's good emission wavelength monochromaticity, by combining LED chips with different emission wavelengths and / or LED chips with the same emission wavelength but using LED packages with different phosphor materials (corresponding to different output spectra) to obtain different LED light sources that output wavelength combinations / spectrums (hereinafter referred to as "combined light sources"). In the field of general lighting, because the huma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 季杭峰方溁岑益超王米成孙泉明李立新
Owner PUTIAN INTELLIGENT LIGHTING INST