A Spectrum Design and Evaluation Method of White LED Light Source

Abstract

The invention discloses a white light LED light source spectrum design and evaluation method. The problem of existing white light LED light source spectrum pertinence design is solved, and the spectrum design and evaluation accuracy is improved. The method comprises the following steps of 1 reflection spectrum testing on all point areas of the surface of a lighted object under a reference light source; 2 calculation of spectral energy of all wave bands and preparation of a white light LED light source; 3 reflection spectrum testing on the point areas of the surface of the lighted object under the white light LED light source; 4 calculation of chromaticity coordinates and chromatic aberrations of two reflection spectrums; 5 calculation of the overall color trueness Rf and the overall color saturability Rg; 6 determination on an Rf numerical value and an Rg numerical value, wherein if the numerical values do not meet the preset requirements, the steps from second to sixth continue to be conducted. The white light LED light source spectrum obtained through the method is high in pertinence and spectrum utilization rate and excellent in color reduction degree; the method can be applied to museum lighting, medical lighting, garment lighting and the like.

Description

technical field [0001] The invention relates to a white light LED light source spectrum design and evaluation method, which belongs to the field of semiconductor lighting. Background technique [0002] Due to the advantages of energy saving and environmental protection, high luminous efficiency, and adjustable spectrum, white light LED light sources have already occupied a large share in the lighting market. At present, the spectrum of white light LED light sources lacks professional and targeted design, and only a few wavelengths Mixed with each other, without considering the degree of restoration of the true color of the illuminated object in the actual application environment, especially for cultural relics such as gold, ceramics, calligraphy and paintings in museum lighting, which have different requirements for the spectrum, medical endoscope lighting The surface layers of various tissues and organs in the environment have different requirements for the spectrum. Using ...

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Problems solved by technology

[0002] Due to the advantages of energy saving and environmental protection, high luminous efficiency, and adjustable spectrum, white light LED light sources have already occupied a large share in the lighting market. At present, the spectrum of white light LED light sources lacks professional and targeted design, and only a few wavelengths Mixed with each other, without considering the degree of restoration of the true color of the illuminated object in the actual application environment, especially for cultural relics such as gold, ceramics, calligraphy and paintings in museum lighting, which have different requirements for the spectrum, medical endoscope lighting The surface layers of various tissues and organs in the environment have different requirements for the spectrum. Using a general-purpose spectrum to illuminate it cannot highlight the true color of the illuminated object, resulting in a waste of lighting resources. Therefore, the comparison of spectrum requirements High lighting environments or objects require targeted spectral design and evaluation, which is an important technical problem to be solved in the lighting design of white light LED light sources

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