The background, technology and applications of Tunable White lighting, using LED technology.

1. Tunable white – light for activity and well-being

2. Tunable white – light for activity and well-being
Tunable white in applikationsNatural light for humans
ProductsTechnology

3. Evolution
The Earth rotates around its
axis in one day, and as it
rotates is the place we find
ourselves in facing the sun by
day and away from the sun
during the night.
Because we humans, like all
living things, are dependent on
the sun and the light, the
sunrise and sunset have since
the beginning of life steered us
and our biological clock, our
circadian rhythm, controls our
actions

4. Evolution
We humans evolved in Africa and when the sun rose, we could begin to look around and
see that we survived the night with a sense of relief.
The morning light, coming from low angles, telling us to wake up and prepare us for the day.

5. Evolution
Later in the morning there was a different light. The daylight and the light in the sky come
from high angles and hits the bottom of the eye where what we call the "third receptor" is
located and affects hormone production. The light that hits the bottom of the eye in
combination with colour temperature of the sky and the shadows tells our brain that it's time
for activity, we need to collect food to survive until the next day.

6. Evolution
Later in the day, when the sun starts to go down, the sky turns red and the light comes from
a low angle, cortisol levels decrease the production of the sleep hormone starts and
prepares us for a night's rest.

7. Evolution
When we learnt to control the
fire it supplied us, apart from
protection against wild animals
also light and heat. We could
start to use the dark hours for
more than sleeping. The light
from the fire creates security
and we react by feeling calm
and safe.
We found out that we could
carry around the fire with
torches. Later we got various
types of lamps but with all the
fire and the open flame as a
base principle

8. Evolution
With electric lighting we became independent of daylight
and fire and could start working un for us unnatural times.
One can say that the earth stopped. Our biological clock
could be disturbed in its rhythm.

9. Evolution
Now the technology has reached the point when we can stimulate our inner clock with
artificial light again, for activity and well-being during the day and the world can start turning
again.

10. The natural light – our norm
Since the origin of life the changes of the
natural light throughout the day has
guided our actions and our biological
clock.
The cold daylight tells us that it is time
for activity – hunting or food collecting.
The warm afternoon light calms and
prepares us for the night's rest.

11. Tunable white – for the
organization and the human
The employees are the organization's
greatest asset. If the employees are well
the better chance that the organization is
healthy.
Dynamic lighting makes people feel
better by imitating nature and stimulate
the circadian rhythm.
The ability to control the light
temperature creates satisfaction and
willingness to also control the intensity
which can save energy.

12. Tunable white – to be able to
choose the right light
We are used be able to regulate the
intensity of the light. Now we can also
easily adjust the colour temperature!
Different tasks and work situations
require different light.
We do not need fix a colour temperature
but can choose, depending on the
situation or task.

13. Tunable white in various a applications
Cellular office
Pause room
Open plan office
Conference room
Waiting room
Auditorium

14. Tunable white in the conference room
2700k 4000k3000k
5000k 2700k6500k
Conference rooms are often located in the
middle of the building without access to
daylight.
It is an area where the colour temperature
control can be used in several ways.
A cooler light when more active tasks are
being performed, or a warmer light when
we need to focus.
A common issue when using video
conferences is that camera is unable to
handle the light levels as well as the human
eye, so we are perceived as looking more
sickly.
With a Tuneable White solution, we can adapt
the light level so that the faces of the
participants are rendered as realistically as
possible, helping to facilitate the
communication process.

15. All light on me- the auditorium
2700k 4000k3000k
5000k 2700k6500k
Education or full-day conference?
As well as having scenes with different
lighting levels, it is advisable to also
control the colour temperature.
By using a timing control the colour of the
light provides the participants with an idea
of the time of day.
Alternatively, we can use the colour
temperature to create different scenes.
Refreshing high levels of cold light for activity
or warmer dimmed light for focus and
concentration.
The light on the presenting area is controlled
separately depending on what activities are
going on there.

16. In the breakout areas
2700k 4000k3000k
5000k 2700k6500k
In breakout rooms the benefits of colour
temperature control are in their element,
transforming how you can use the space.
A pause in the cold light revitalises us while a
warmer light calms us down. In this
example we have chosen recessed Pozzo.
The large, wide beam distribution creates a
light-well effect, giving an impression of
natural light, further optimised with a
varying colour temperature which imitates
the evolution of daylight throughout the
day.
Because the ones who pauses also want
control a simple panel on the wall can be
used to define a specific light setting.

17. Welcoming in the entrance or waiting room
2700k 4000k3000k
5000k 2700k6500k
In the entrance or the waiting room light is
controlled with a router solution to imitate
daylight, both in intensity and colour.
This can be especially important if there is no
natural daylight reaching in the room.
This solution provides a sense of having
access to daylight, even if the room is
located in the middle of the building where
there is limited access to the real thing.
Pozzo creates a feeling of natural light wells,
reinforced by adding light on the walls with
Pleiad Wallwasher G3.

18. Personal light in the cellular office
2700k 4000k3000k
5000k 2700k6500k
A cellular office is the easiest room to apply a
Tuneable White solution as there is only
one user who controls the light according
to his or her preferences.
Think of a cold, intense light when you want to
activate yourself or a warm dimmed light
for conversations, reading and tasks which
require concentration.
Using a suspended direct/indirect Combilume,
supplemented with Pleiad Wallwasher G3,
provides the ambient and task light
requirements, with the colour temperature
and intensity controlled via a simple panel
on the wall.

19. Personal light in the cellular office
2700k 4000k3000k
5000k 2700k6500k
Open plan offices cannot be controlled to
reflect each individual's personal
preferences since the room is lit for a
group of people.
Here we recommend a router solution that
varies the light over time and adjusts the
colour temperature mimicking the light
outdoors.
In the ceiling we have Multilume Flat and, to
strengthen the sense of a natural daylight,
the walls are lit using Pleiad Wallwasher
G3.

20. Tunable white – the technique
is simple
The LED modules contains a mixture of
diodes providing warm or cold light.
By mixing the light from these diodes we
can get colour temperatures between
2700–6500 Kelvin out of a single
luminaire.
Everything is controlled via DALI Device
Type 8 and can be managed with
different types of control units

21. Light over the day
When applying an automatic dynamic
control of colour temperature and
intensity we have to use a router.
Colour temperature and intensity are
controlled by the clock, this is also called
”Daylight Mimicking”.
Intensity
Colour temperature

22. Intensity
Colour temperature
Personal control after task
Personal control to regulate the light
depending of task, mood or situation.
“Light showers" in high levels of cold
light for short periods or other settings
after mood or task.

23. Technology up til now – DALI
•One ballast for the warm diodes and one
for the cold ones.
•Two DALI-addresses.
•Programming of each ballast for colour
mixing to get ie 4000 K.
•Measure colour mix with spectrometer to
get the right colour temperature.
•Lot of controlling and measuring to set
various scenes.

24. Technology today – DALI Device Type 8
•One ballast controls both warm and cold
diodes.
•One DALI-address, the logic is built into
the ballast.
•The desired colour temperatures are set
directly in programming.

25. Products with Tunable White
Combilume Direct/Indirect Multilume Flat Delta
Pozzo Delta Pleiad Wallwasher G3Pleiad G3

26. Dynamic light for humans
Dynamic light is like music for our eyes
and mind.
Providing increased comfort and well-
being by mimicking natural light.
Enhanced sleep and reduced stress

27. Tunable white – light for activity and well-being