Tunable white – light for activity and well-being

Tunable white – light for activity and well-being

Tunable white in applikationsNatural light for humans

ProductsTechnology

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

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.

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.

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.

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

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.

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.

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.

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.

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.

Tunable white in various a applications

Cellular office

Pause room

Open plan office

Conference room

Waiting room

Auditorium

Tunable white in the conference room

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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.

All light on me- the auditorium

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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.

In the breakout areas

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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.

Welcoming in the entrance or waiting room

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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.

Personal light in the cellular office

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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.

Personal light in the cellular office

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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.

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

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”.

IntensityColour temperature

IntensityColour 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.

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.

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.

Products with Tunable White

Combilume Direct/Indirect Multilume Flat Delta

Pozzo Delta Pleiad Wallwasher G3Pleiad G3

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

Tunable white – light for activity and well-being