15
Use the right
light at the right
time of the day
We need more bright blue light during the day and less light or
darkness at night.
Frequently, artificial light is usually neither bright nor dim
enough.
Good night sleep
Alertness and
productivity
Insomnia
Foggy brain
DAY
NIGHT
BAD
GOOD
B I O L O G I C A L I M PA C T O F L I G H T
D AY L I G H T
1 0 0 0 - 1 0 0 . 0 0 0 L U X
M O O N L I G H T
1 L U X
A R T I F I C I A L L I G H T
1 0 0 - 5 0 0 L U X
A R T I F I C I A L L I G H T
1 0 0 - 5 0 0 L U X
L I G H T & W E L L - B E I N G
01
02
03
04