Human Centric Lighting

supports health, well-being and performance

of humans by combining visual, biological and

emotional benefits of light

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Mankind has evolved under this light - dark cycle.

24 hour rhythms dominate much of what we are:

• The world has 24-hour rhythms and changing seasons

• The light entering the eye is linked with body functions

• Light intensity, color, timing, direction and history are very important

in circadian lighting

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Light in nature

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On a sunny day people outside get

100 000 lux

On a clouded day

10 000 lux

Indoor in offices people get

500 lux

And in school only

300 lux

People spend

Of their time indoor

Our daily world

Today there is a discrepancy between natural and electric light with regard

to intensity, color and dynamics of light

Consequences

• Poor circadian entrainment, problems with body clock similar to jet-lag.

• Problems with sleep & alertness.

• Disturbance of the hormone system.

• Compromised mood, functioning, well-being and health….

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The problem

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What do we need

We need light and darkness

There is a period of the day when we are active and a period when we are sleeping

Light is the most important timer for our internal clock

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Nobel Prize 2017

October 2nd 2017:

The Nobel Prize in Physiology or Medicine 2017 was awarded jointly

to Jeffrey C. Hall, Michael Rosbash and Michael W. Young "for their

discoveries of molecular mechanisms controlling the circadian

rhythm".

Jeffrey C. Hall Michael Rosbash Michael W. Young

The impact of light

visual

non-visual

immediate 30 sec 15 min

Rhythm of „Sleeping Hormone“ Melatonin Vandewalle &

Dijk 2009

Impact on brain functionsImpact on rhythm

Pathways of light in the brain

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380 420 460 500 540 580 620 660 700 740 780

S- Cone (Blue)

M- Cone (Green)

L- Cone (Red)

Melanopsin (480nm)

Rods (nightvision)

normalized data from CIE TN 003 (2015) 9

Lucas et al. Trends in

Neuroscience 2014

Photoreceptors in the eye

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The metrics

• Lux and lumen are light metrics for vision.

• For non-visual aspects we need additional metrics to quantify ocular

radiation input.

• Scientists and Standardization bodies are working on this.

We need the right light at the right place at the right time

to support our activities

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Dynamic and tunable lighting systems will enable Human Centric Lighting

via dimming and boosting light intensity and tuning spectrum.

The solution

Office

School Hospital

Home

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Each lighting application has its own specific needs

Elderly home

Factory

We need the right light at the right place at the right time

to support our activities

Light in applications

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Economics

The benefits

Human centric lighting can be a multi-billion-euro business in Europe

1. Human centric Lighting 2. Indicated chart values until 2017 are for scenario with high growthSource: A.T. Kearney "Light and Health" market model

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2013

0,1

2016

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2015

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2014

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2017

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1,6

2018 2020

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2,3

2019

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Optimistic PessimisticConservative

• Optimistic scenario assuming

– Resolution of economic crisis

– Significant infrastructure

investments

• Realistic scenario most probable,

assuming

– Selective government support

– Joint industry initiatives

– Considerable marketing

investments

• Pessimistic scenario assuming

– Worsening of economic crisis

– Little infrastructure investments

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Market outlook

With hypothesized market size of 1.4 billion EUR by 2020 of the HCL industry (7% of EU general lighting market; 20-25% of its high-end market

segment), there will be:

✓An estimated total of around 10000 direct new jobs in the EU area;

✓Estimate made of the division of those jobs amongst sectors;

✓The employment multiplier of the HCL industry, measuring the amount of direct, indirect and induced jobs created in the area, is 2.91. This implies that for every HCL job, in total 2.91 jobs (direct, indirect and induced) are created in the economy.

Jobs in Europe

Human centric lighting supports productivity and jobs in Europe

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Human Centric Lighting summary

• Light has the potential to elicit positive effects on human well-being

• We have the scientific understanding to utilize these effects

• We have the required technology and products available

New vision on lighting:

• natural daylight and artificial electrical light are partners

• we can achieve both light quality and energy efficiency

Thank you for your attention!

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