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A method for optimizing the spectrum of multi-color LEDs

An optimization method, multi-color technology, applied in the field of lighting, can solve the problems of no quantification of light and color effects, no consideration of the light reflection efficiency of objects, etc., to achieve the effect of optimizing illumination efficiency, reducing reading fatigue, and comfortable reading effect

Active Publication Date: 2017-12-26
SHENZHEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there is no quantification of light and color effects, no consideration of the efficiency of reflected light from objects, and no systematic optimization model scheme for multi-color LEDs

Method used

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  • A method for optimizing the spectrum of multi-color LEDs
  • A method for optimizing the spectrum of multi-color LEDs
  • A method for optimizing the spectrum of multi-color LEDs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: Select four single-chip LEDs to synthesize a multi-color LED light source with a color temperature of 4000K. Four single-chip LEDs include red, amber, green, and blue LEDs with spectral energy distributions such as figure 2 As shown, the corresponding chromaticity values ​​are as image 3 As shown, where point X is the intersection point of chromaticity, and the corresponding chromaticity point of 4000K color temperature is located on the Planck curve. In the light color mixing, the proportion of LEDs of each light color is linear. If the proportion of LEDs of a certain light color is t, the proportion of LEDs of each light color can be expressed as k i t+b(i=1,2,3,4), where k i is the slope, b i is a constant, and t is an unknown number. Here, if the proportion of amber LEDs is t, each single-chip LED is in a linear proportion, such as Figure 4 As shown, the proportion of each single chip is shown in the following formula.

[0054]

[0055] The...

Embodiment 2

[0056] Embodiment 2: According to the white paper reflectance of reading works such as books, newspapers and periodicals, (usually the white paper reflectance can be regarded as 1, if not 1, then measure its spectral reflectance curve), carry out multi-color LED spectrum optimization, make the paper It reflects a comfortable light color; while the characters are generally black or a highly saturated color, and the change is relatively small. So as to achieve the purpose of improving reading comfort.

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Abstract

The invention discloses a multi-color LED spectrum optimization method, which comprises the following steps 1, 2, 3, 4 or steps 1, 5, 6, and 7: Step 1, the method for mixing light and color of the multi-color LED spectrum; Step 2, the selection and calculation of the composite chromaticity of the multi-color LED; Step 3, the calculation of the spectral reflection efficiency of the multi-color LED; Step 4, the calculation of the light color effect after the multi-color LED irradiates the object; Step 5, After the multi-color LED irradiates the object, it is fitted into chromaticity selection; step 6, calculation of light color effect of the multi-color LED; step 7, calculation of spectral reflection efficiency of the multi-color LED. The invention improves spectral reflection efficiency and light color effect through spectrum optimization technology, and is suitable for landscape lighting, scene lighting, commercial lighting and some functional lighting occasions.

Description

technical field [0001] The invention relates to the field of lighting technology, in particular to a method for optimizing the spectrum of multi-color LEDs. Background technique [0002] Due to its spectral flexibility, LEDs can be combined into light sources of various types of light colors. Multi-color LEDs can be combined in different ways, including LEDs combined with multiple chips, LEDs with different light colors mixed based on phosphor powder, and other ways. Multi-chip LED itself has advantages in spectral selectivity, control flexibility, efficiency, etc. With the improvement of chip technology and control technology, multi-chip LED will be more used in lighting. Phosphor-based LEDs are less flexible than multi-chips, but their stability is better. [0003] When irradiating colored objects, the application of multi-color LEDs can not only change the light color of the light source itself, but also change the light color after irradiating the object, and the corre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 姚其
Owner SHENZHEN UNIV
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