Spectral optimisation and a novel lighting-design space based on circadian stimulus
Spectral optimisation and a novel lighting-design space based on circadian stimulus
复制标题
基于昼夜节律刺激的光谱优化和新颖的照明设计空间
DOI：
10.1177/1477153517733504
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发表时间：
2018-12-01
影响因子：
2.5
通讯作者：
Wang, Z.
中科院分区：
文献类型：
--
作者：
Dai, Q.;Cai, W.;Wang, Z.
随着光生物学研究和发光二极管技术的最新进展，考虑昼夜效应的照明及其潜在的健康益处引起了人们的广泛关注。在这项研究中，我们证明了光的光谱优化以获得高视觉效果的常见做法可能会导致非常低效的昼夜节律刺激的传递，这有助于缺乏昼夜节律的夹带，这可能发生在室内环境中，只有电照明。为了优化白色发光二极管的昼夜节律功效的光谱，引入了具有显式解析解的四组分颜色混合方法。通过从传统的最大视觉功效策略切换到最大昼夜节律功效策略，在目标昼夜节律刺激为0.35时实现了高达29%的节能。此外，我们提出了一个新的照明设计空间的框架，允许从业者探索昼夜刺激，视觉照度和色温的可能组合。提供了用于在维持合理的视觉亮度外观的同时应当避免昼夜节律系统的激活的场景的解决方案。
With the recent advances in photobiology research and light-emitting diode technology, lighting considering circadian effects and the potential health benefits attract much attention. In this study, we demonstrate that the common practice of spectral optimisation of light for high visual efficacy can potentially lead to very inefficient delivery of circadian stimulus, which contributes to the lack of circadian entrainment that is likely to happen in indoor environments with only electric lighting. To optimise spectra of white light-emitting diodes for circadian efficacy, a four-component colour-mixing method with explicit analytical solutions is introduced. Energy-saving up to 29% is achieved at a target circadian stimulus of 0.35, by switching from the traditional maximum-visual-efficacy strategy to a maximum-circadian-efficacy strategy. Moreover, we propose a framework of a novel lighting-design space which allows practitioners to explore the possible combinations of circadian stimulus, visual illuminance and colour temperature. Solutions are provided for scenarios where activation of the circadian system should be avoided while a reasonable visual brightness appearance is maintained.