6
The Lighting Handbook
Light that part the electromagnetic spectrum that is
perceived our eyes.
What the melanopic effect light?
The retina also contains photosensitive ganglion cells. The cones come during the day and we
see colours, whereas night the rods take over and only
see shades grey. Suppressing melatonin the morning
helps keep you awake during the day. This means that the
right light controls the circadian rhythm thus healthy
waking and sleeping behaviour.The wavelength range between
380 and 780 nm. Melatonin responsible for a
good sleep night.
These are sensitive blue light and suppress the sleep
hormone melatonin night.
What light?
What light?
Wavelength [m]
10-10
10-5
100
105
Gamma rays
X-rays
Ultraviolet
Infrared
Terahertz
Microwaves
Radio waves
Television, VSW
Medium wave
Light
