Adaptive light: a lighting control method aligned with dark adaptation of human vision
Open accessAbstract
Light exposure before sleep causes a reduction in the quality and duration of sleep. In order to reduce these detrimental effects of light exposure, it is important to dim the light. However, dimming the light often causes inconvenience and can lower the quality of life (QOL). We therefore aimed to develop a lighting control method for use before going to bed, in which the illuminance of lights can be ramped down with less of a subjective feeling of changes in illuminance. We performed seven experiments in a double-blind, randomized crossover design. In each experiment, we compared two lighting conditions. We examined constant illuminance, linear dimming, and three monophasic and three biphasic exponential dimming, to explore the fast and slow increases in visibility that reflect the dark adaptation of cone and rod photoreceptors in the retina, respectively. Finally, we developed a biphasic exponential dimming method termed Adaptive Light 1.0. Adaptive Light 1.0 significantly prevented the misidentification seen in constant light and effectively suppressed perceptions of the illuminance change. This novel lighting method will help to develop new intelligent lighting instruments that reduce the negative effect of light on sleep and also lower energy consumption.
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Poor sleep quality can be affected by lighting that is too bright.
“Takemura et al. [57] say that poor sleep quality can be affected by lighting that is too bright.”
From Machine Learning Methods in Smart Lighting Toward Achieving User Comfort: A Survey (2022) · cites this paper as Takemura et al. [57]
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Machine Learning Methods in Smart Lighting Toward Achieving User Comfort: A Survey
Putrada, A. G., Abdurohman, M., Perdana, D., & Nuha, H. H. (2022) · IEEE Access · doi:10.1109/access.2022.3169765 · Cited by 101 · see citing works
“Takemura et al. [57] say that poor sleep quality can be affected by lighting that is too bright.”
Background
- Authors
- Takemura, Y., Ito, M., Shimizu, Y., Okano, K., & Okano, T.
- Affiliations
- Waseda University (JP)
- Corresponding author
- Okano, Toshiyuki
- ORCID
- Okano, Toshiyuki
- Venue
- Scientific Reports
- Published
- 2020-07-08
- Volume
- 10
- Issue
- 1
- Pages
- 11204-11204
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC7343865
- OpenAlex
- W3040987856
- Cited by
- 12
- References
- 6
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 4
- FWCI
- 0.90
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Japan Society for the Promotion of Science (16K13032)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Physical Sciences › Engineering › Building and Construction › Building Energy and Comfort Optimization
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Keywords
- adaptive lighting, dimming, dark adaptation, sleep, cone photoreceptors, rod photoreceptors, visual perception, quality of life, energy consumption
- MeSH terms
- Adolescent, Adult, Dark Adaptation, Double-Blind Method, Female, Humans, Japan, Light, Lighting, Male, Sleep, Vision, Ocular, Cross-Over Studies, Young Adult
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