光源光谱相似度模型的建立以及光谱对比分析

Establishment of Spectral Similarity Model and Spectral Contrast Analysis of Light Source

照明市场正处于采用以人为中心的照明(HCL)的早期阶段,照明的评价指标也由视觉指标维度向非视觉指标维度转变。传统的视觉指标,如显色指数、色温、色容差等已经无法满足对健康光的评价,需要引入新的指标评价体系。而光谱功率分布作为重要分析工具,也为建立健康光评价体系提供了思路。由于缺乏定量测量光源自然度的行业标准,本文针对与自然光谱的接近度拟合方法这一主题展开研究,提出了一种客观比较两种光源自然度的新方法,即余弦相似度对比法,不仅能便捷对比与自然光的拟合度分析,同时也能够快速分析出两种光源光谱的相似度。

The lighting market is in the early stages of adopting human-centered lighting(HCL).The evaluation index of lighting has also changed from visual index dimension to non visual index dimension.The traditional visual indexes,such as R a,R 9,CCT and color tolerance,can not meet the evaluation of HCL,therefore a new index evaluation system needs to be introduced.As an important analysis tool,SPD also provides ideas for the establishment of health light evaluation system.Due to the lack of industry standards for quantitative measurement of the naturalness of light sources,this paper studies the proximity fitting method with the natural spectrum,and puts forward a new method to objectively compare the naturalness of two light sources,namely cosine similarity comparison method,which can not only conveniently compare the fitting analysis with the natural light,but also quickly analyze the similarity of the spectra of two light sources.