EN 12646-1 part 1
of indoor work places” published in 2002
specifically introduces a new term and criterion: "lighting of the task
area". This means that lighting designers more than ever can create
interesting and stimulating visual working environments.
The challenge however is
to make the installations energy friendly and cost effective. As with other
applications the combination of the use of the right lighting products
with the use of the right specification for the installation is
Intelligent lighting with a right balance between
automatic and user control, enable
daylight linking and occupancy dependent control to minimize energy
A future new version of the European Standard should also take into
account non-visual effects of lighting to arrive at true healthy
lighting installations. Of course with the right expertise we can start
already today designing intelligent healthy dynamic lighting installations.
One of the
important changes in the 2002 Standard is the introduction of a
new “unified glare rating” system (UGR). In contrast to earlier
glare restriction systems used in many European countries this system
makes selection of luminaires based on manufacturers data
more difficult. It is for this purpose that a team of
specialists under the leadership of van Bommel developed a
system for luminaire photometrics that also permits easy
selection of luminaires based on the UGR system.
shows an example of a UGR diagram for a certain office lighting luminaire.