Sleep Lab · Research foundation
Your body uses light to tell time.
After dark, timing, intensity, duration, and spectrum all matter.
Light Is More Than Color
Two warm-looking lights can have different spectra.
Appearance is how light looks. Spectrum is what the light contains.
The right light for the right time.
- Daytime
- Bright light at appropriate times helps support the body’s daily rhythms.
- Evening
- Reduce light exposure as bedtime approaches.
- Nighttime
- Keep your sleep environment as dark as possible. When light is needed, consider its intensity, spectrum, and duration.
General guidance for healthy adults. Brown et al., 2022 ↗
Conceptual illustrations
Two ways to read nighttime light.
These diagrams summarize general research concepts. They are not Lume measurements and do not show a product-specific spectrum.
01
Spectrum is composition.
02
Evening light can change the nighttime signal.
Research context: Gooley et al., 2011 and Cain et al., 2020.