Scientific Sleep Optics
Circadian560™
A dark-mode sleep ritual engineered around the 560nm safety horizon.
560nm
SLEEP PHOTOBIOLOGY • CIRCADIAN CONTROL
Why light can keep your brain ‘on’ at night
Even brief exposure to blue–green weighted light can shift the circadian phase, suppress melatonin signaling, and increase cortical arousal—making sleep onset slower and awakenings harder to recover from.
Why artificial light delays sleep
Your circadian system is not ‘sleep vs wake’—it is a timing network. Bright, cool-spectrum light in the evening pushes the biological night later (phase delay), reduces melatonin amplitude, and raises alerting tone. The result: longer sleep-onset latency and lighter early-night sleep architecture.
Blue–green & the alerting pathway
Blue–green energy disproportionately drives melanopsin-weighted signaling to the circadian pathway. That signal elevates vigilance, delays the dim-light melatonin onset window, and can compress deep restorative cycles—while also increasing the probability of REM fragmentation later in the night.
After waking at night
When you wake at night, the goal is to keep the brain in a low-arousal state. A few minutes of bright light can re-engage alerting circuitry and reduce sleep pressure expression—so re-sleep becomes slower. The effect is often felt as ‘I’m awake again’ even if the exposure was brief.
Designed for low-arousal night navigation.
CIRCADIAN RHYTHM • SLEEP PHOTOBIOLOGY
Your brain has a clock ~ light can reset it
A premium, science-first view of how wavelength, timing, and brief exposure can shift sleep onset and fragment deep cycles.
Peak sensitivity zone
450–560 nm
blue → cyan → green weighted
Your brain runs on a timekeeper
The circadian clock is a timing network that coordinates hormones, temperature, alertness, and sleep drive. In the evening, bright artificial light acts like a ‘day signal’—delaying biological night and keeping the cortex more aroused.
Why 450–560 nm matters
Light in the 450–560 nm band is disproportionately effective at driving alerting pathways. Even short exposure can suppress melatonin signaling, shift circadian phase (phase delay), and make sleep onset slower—especially in sensitive individuals.
REM / re-sleep after waking
After waking at night, the goal is low-arousal navigation. A few minutes of bright, cool-spectrum light can re-engage alerting circuitry and make re-sleep harder—often felt as ‘I’m awake again’, with more fragmented REM later.
Spectral map (UV → Visible 780 nm)
PRESENTING
Circadian560™ — Patent Pending Technology
A dark-mode sleep ritual engineered around the 560nm safety horizon.
UNLOCK DARK-MODE SLEEP
Circadian560™
A premium optical system designed to reduce blue-green weighted signaling at night.
Before
Bright / Cool light environment
Blue-green weighted light keeps melanopsin pathways active, increasing alerting signals and delaying sleep onset.
After
Deep red / low-arousal environment
Shift to a low-arousal visual field designed for night navigation and re-sleep after awakenings.
Educational content for sleep photobiology; not a medical claim.