Recommendations published for daytime, evening, and nighttime indoor light exposure using melanopic equivalent daylight illuminance
Brown TM, Brainard GC, Cajochen C, et al. · PLOS Biology · 2022 · 10.1371/journal.pbio.3001571 · Building science · Link only
An expert consensus group recommended a minimum melanopic equivalent daylight illuminance of 250 lux during the day, a maximum of 10 lux in the evening, and a maximum of 1 lux during sleep, noting that supporting evidence derived mainly from laboratory studies in healthy adults.
What this document covers
An expert consensus group recommended a minimum melanopic equivalent daylight illuminance of 250 lux during the day, a maximum of 10 lux in the evening, and a maximum of 1 lux during sleep, noting that supporting evidence derived mainly from laboratory studies in healthy adults.
Link only. We reproduce none of the document text; the scope line above is our own.
Source
- Recommendations published for daytime, evening, and nighttime indoor light exposure using melanopic equivalent daylight illuminance · PLOS Biology · Read at the source
Last reviewed September 23, 2026.
Related reading
- Fluorescent lighting flicker frequency measured against headache and eyestrain incidence in office workers
- Action spectrum for light-induced melatonin suppression measured in healthy adults
- Action spectrum for melatonin suppression measured with monochromatic light in healthy adults
- Evening room light exposure measured against melatonin onset and duration in healthy adults
- Natural light-dark exposure measured against circadian timing in adults living in an electrical lighting environment
- Bedroom light at night measured against incident depressive symptoms in an elderly Japanese cohort
