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Effects Of Spectral Tuning Of White Light on Attention Level And Sleep Quality L&E, Vol. 29, No. 3, 2021

Light & Engineering 29 (3)

Volume 29
Date of publication 06/24/2021
Pages 93–99

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Effects Of Spectral Tuning Of White Light on Attention Level And Sleep Quality L&E, Vol. 29, No. 3, 2021
Articles authors:
Dandan Hou, Yandan Lin, Yan Lu, Ming Ronnier Luo

Dandan Hou received the B.E. degree in the College of automation, Harbin Engineering University in 2016. She is currently pursuing the Ph.D. degree in the Department of light sources and illuminating engineering, Fudan University, Shanghai, China. Her research interests include human factors in lighting, colour vision, and human centric lighting. She has taken many funding projects, including Special Project for China Commercial Aircraft and National Key R&D Program of China

Yandan Lin, Ph.D. Now she is full professor of Department of Light Sources and Lighting Engineering, Fudan University. Her research interests include health lighting and colour science. She has taken more than 30 funding projects, including National Natural Science Foundation of China, Special Project for China Commercial Aircraft. She has published more than 100 academic articles

Yan Lu received the B.S. and MA. Sc degrees in the Department of light sources and illuminating engineering, Fudan University in 2016 and 2019. She is currently pursuing the Ph.D. degree in the School of Design, University of Leeds, Leeds, UK. Her research interests include human factors in lighting, and skin tone

Ming Ronnier Luo is a Qiushi Chair Professor at the College of Optical Science and Engineering, Zhejiang University (China). He is also a Visiting Professor at University of Leeds (UK) and at National Taiwan University of Science and Technology, Chinese Taipei. He has published over 650 peer reviewed papers and holds 19 patents. He is a Fellow of the Society for Imaging Science and Technology (IS&T) and the Society of Dyers and Colourists (SDC)

Abstract:
Non-image-forming lighting effects reveal the multiple circadian influences of light on human behaviours. A psychophysical experiment was conducted in two sessions (morning and afternoon) for 60 days. The experiment was designed to explore the influence of different circadian lighting by spectral tuning with controlled CCT and illuminance on attention level, brain activity, and sleep quality by measuring PVSAT, EEG, and PSQI, respectively, by 20 participants. The results showed that the white lighting of high circadian stimulus level and high melanopic irradiance significantly enhances the attention level, brain activity, and sleep quality compared to low circadian stimulus level.
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