Hvordan påvirker lys, dagslys, og udsyn produktiviteten på arbejdspladser? Præsentationen gennemgår de undersøgelser der findes på området. Præsentationen blev givet på på To-go møde 20. juni 2017 afholdt af InnoByg-projektet Totalværdi og indeklima.

1. HVAD MED LYSET?
Peter Foldbjerg & Jens Christoffersen, VELUX A/S
To-go møde Totalværdi & indeklima 20. juni 2017

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Sleep, Work, Live
- Healthy Living Around the Clock
The environment in
the bedroom has a
huge impact on our
health and
wellbeing
SLEEP, WORK,
LIVE
- Healthy Living
Around the Clock
Healthy light is
linked to healthy
darkness at night
Human well-being
relies on regular
exposure to light
and dark each day.
The daily light dose
received might be
too low.
Our biology
responds to light
intensity,duration,
timing, and
spectrum
The environment
can positively
influence
productivity and
well-being
In 2004, CIE promulgate five “principles of healthy lighting”
(CIE, 2004/2009), and the same report also suggested that
these principles should lead to a renewed emphasis on
architectural daylighting

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Natural light is the single most important
attribute in a home, with over 60% of
respondents ranking it as important1
WHO’s report that residents with inadequate
natural light in their homes have greater risk
for depression and falls2
1The Way We Live Now, RIBA and Ipsos MORI, 2012
2Brown, M. J., & Jacobs, D. E. (2011). Residential light and risk for depression and falls: Results from the LARES study of eight European cities. Public Health Reports, 126(Supplement 1), 131-140.
DAYLIGHTING AT HOME

5. SLEEP, WORK, LIVE
- HEALTHY LIVING AROUND THE CLOCK
“Proper light at proper time” are essential in maintaining key
aspects of our overall health1
2Light in the morning increase our levels of alertness, allow increased performance
at the beginning of the day.
From mid-morning to early evening, high levels of daylight, allow us to maintain
sufficient level of alertness, performance and mood.
Reduced light levels in the evening and a dark bedroom promote sleep at night.
1 CIE Position Statement on Non-Visual Effects of Light, June 28, 2015
2Mardaljevic, J., Andersen, M., Roy, N., Christoffersen, J. (2012) Daylighting, Artificial Lighting and Non-Visual
Effects Study for a Residential Building

6. Higher satisfaction with the view if natural scenes than man-made
scenes (Christoffersen et al., 1999)
View to the outside give:
• higher environmental satisfaction (Newsham et al., 2009)
• better mood (Grinde and Grindal Patil, 2009)
• job satisfaction (Newsham et al., 2009 )
• recovery of surgical patients (Ulrich,1984)
• seating preference (Wang and Boubekri, 2010, 2011)…..
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VIEW AT WORK
Satisfaction with view as function of actual scene
-40 -20 0 20 40 60 80 100
Industry
Parking lots
Other
Low buildings
Traffic, streets
Sky
Landscape
Responses (%)Dissatisfied Satisfied
Tall buildings
Trees, plantation
Courtyard

7. DAYLIGHTING IN SCHOOLS
The study included 2,837
children (9-12 years old)
in 148 classrooms from
54 schools across Europe
Maesano, C., & Annesi-maesano, I. (2016). Impact of Lighting on School Performance in European Classrooms. In Clima2016 (pp. 1–14). Aalborg.

8. Research has identified benefits of daylight and sunlight
as well as view for worker health and well-being
People believe that working under natural daylight is
better for health and well-being1 than electric light
Working in environments with natural elements are
reported to increase level of well-being, productivity and
creativity
DAYLIGHTING AT WORK
NRC, COPE
1 Veitch, J. A., and Gifford, R. (1996) Assessing beliefs about lighting effects on health, performance, mood, and
social behavior. Environment and Behavior, 28(4), 446-470
2Human Spaces. (2015). The Global Impact of Biophilic Design in the Workplace.

9. WORKPLACE PRODUCTIVITY
Call center workers with outdoor views processed calls 6% to 12% faster and
performed 10% to 25% better on mental function and memory tests than workers
without views *
12 studies linking improved lighting design with up to a 23% gain in productivity
related to light levels matched to task, glare and brightness control, and the power of
views **
13 studies linking the access to the natural environment through daylight and
operable windows to individual (up to an 18% increase) and organizational
productivity (such as increased retail sales) **
* Heschong Mahone Group (2003) Windows and Offices: A Study of Office Worker Performance and the Indoor Environment
** Loftness et al, 2003 Linking Energy to Health and Productivity in the Built Environment. Evaluating the Cost-Benefits of High Performance Building and Community Design for
Sustainability

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World Green Building Council. (2013). THE BUSINESS CASE FOR GREEN BUILDING.

11. HVAD MED LYSET?
På kontorarbejdspladser har lys og udsyn indflydelse på tilfredshed
og produktivitet
For produktivitet viser studier at arbejdspladser med gode
dagslysforhold giver øget produktivitet
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12. CONTACT INFO
FIND US HERE
Peter Foldbjerg
Peter.foldbjerg@velux.com
VELUX A/S