URBAN | 11
100 mq
2500 lm
2500 lm
2500 lm x 2
100 mq
= 50 lm/mq
Tank storage Standic B.V. | Dordrecht | Netherlands
Light flux density is the ratio between the summation of the fluxes of all the lighting
fixtures which light up a certain area and the surface of the area itself; its measure unit
is lm/m².
It allows to evaluate if an installation lights up only where it’s needed without wastes,
so to increase energy savings.
LIGHT FLUX DENSITY (lm/m²)
Light flux density (lm/m²)
Urban areas
Extra-urban areas
- Lighting installations (both public and private) as
roads, which assure drivers, cyclists and pedestrians’
safety.
< 35 lm/m²
< 25 lm/m²
- Architectural and landscape lighting of parks and
gardens, both public and private.
< 25 lm/m²
< 10 lm/m²
- Non-residential buildings (e.g. commercial and
industrial facilities), included indoor lighting which is
emitted outdoor.
< 25 lm/m²
< 20 lm/m²
- Outdoor and semi-indoor parking lots.
< 25 lm/m²
< 20 lm/m²
