Poznámky redaktora
Biological lighting effects
ONDARIA tunableWhite
zumtobel.com/litecom
Stimulation the morning
Colour temperature: 5000 K
Eh* (daylight and artificial lighting): higher than 500 lx
Aim: synchronising people‘s circadian rhythm,
complete suppression melatonin release
During the day sunshine
Colour temperature: 4000 K
Eh* (daylight and artificial lighting): higher than 1000 lx
Aim: enhancing people’s well-being through
well-matched colour temperature, accordingly warmer
light colours during sunshine
During the day with cloudy sky
Colour temperature: 6500 K
Eh* (daylight and artificial lighting): higher than 800 lx
Aim: enhancing people’s well-being through
well-matched colour temperature, accordingly cooler
light colours with overcast sky
Getting ready for sleep
Colour temperature: 2700 K
Eh* (daylight and artificial lighting): higher than 500 lx
Aim: synchronising people’s circadian rhythm,
no interference with melatonin release, restful sleep
* horizontal illuminance
. this case, artificial
lighting solutions incorpo
rating wide-area panels
emitting diffuse light such ONDARIA tunableWhite
combined with lighting management are vital for
supporting daytime activities and ensuring good
night’s sleep.116
A user study lighting quality perceived offices
conducted jointly with Fraunhofer IAO shows that
users’ preferences with respect colour temperature
differ strongly. Since synchronisation people’s inner clock
through daylight not ensured indoors during the
dark months winter, DIN SPEC 67600:201304
also includes specific design recommendations for
biologically effective lighting.com/study-office
zumtobel. Usually, colour temperatures between
2700 and 6500 are perceived ideal, with clear
preference for 4000 and 5000 Another
result the study that office users rate their situa-
tion work significantly higher where possible
for them adjust the lighting their individual
needs.
Thanks the LITECOM lighting management
system and therefore continuously adjustable
colour temperatures ranging from 2700 6500 K,
ONDARIA tunableWhite perfectly tailored the
users’ individual needs and biological requirements –
with technical perfection, the illuminance level
remains constant even with changing colour tempera-
tures
