Since 2003 EU member countries have had a common
standard (EN 12464-1) for light planning in workplaces.
The earlier standards had comprised of lighting requirements
for work surfaces, computer monitors and the
immediate surroundings. Based on new research, the
standard has now been revised and also sets requirements
in terms of lighting of ceilings and walls.
At the same
time, the lighting should be adjustable in classrooms and
lecture halls, and meet the energy requirements of
EN 15193:2007. At Fagerhult we believe this is a step in
the right direction. But if you want to get the full benefit
of light’s positive effects, you need more light than what
the legislation requires.
Lighting of the working area
The standard requires an illuminance of 500 lx.
Indirect light in the ceiling (ambient light)
The standard states a minimum illuminance of 30 lx as
the requirement and recommends a minimum of 50 lx. To
achieve the positive effects reported in Fagerhult’s study,
we recommend an illuminance of 300 lx.
Vertical light on walls (ambient light)
The standard states a minimum illuminance of 50 lx as
the requirement and recommends a minimum of 75 lx.
Based on the findings of our research, we recommend an
illuminance of 300 lx.
Cylindrical illuminance (in rooms with
demands of good visual communication)
Cylindrical illuminance especially affects visual communication
and the ability to interpret faces, events and objects.
The standard requires a minimum illuminance of 150 lx in
rooms with demands of good visual communication.
Lighting of the whiteboard
To ensure what is written or displayed on the whiteboard
is easy to read, the standard requires a minimum illuminance
of 500 lx. The lighting shall be adjustable.