Poznámky redaktora
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.com/study-office
zumtobel.108
A user study lighting quality perceived offices
conducted jointly with Fraunhofer IAO shows that
users’ preferences with respect colour temperature
differ strongly.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
.
Biological lighting effects
LIGHT FIELDS evolution tunableWhite
zumtobel. 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.
Thanks the LITECOM lighting management
system and therefore continuously adjustable colour
temperatures ranging from 2700 6500 K,
LIGHT FIELDS evolution tunableWhite perfectly
tailored the users’ individual needs and biological
requirements with technical perfection, the illu-
minance level remains constant even with changing
colour temperatures. Artificial lighting
solutions incorporating wide-area micro-prismatic
light-emitting surfaces such LIGHT FIELDS evolution
tunableWhite combined with lighting management are
vital for supporting daytime activities and ensuring a
good night’s sleep
