What is Luminous Flux?

What is Luminous Flux?

Luminous flux is the measure of brightness of a light source in terms of the energy emitted in the form of visible light. Luminous flux, in SI units, is measured in the lumen (lm).  Luminous flux is also known as "light output" or "brightness".

Depending on the application, luminous flux can be measured per lamp, fixture, per linear meter or per square meter.

The most known is the luminous flux of the light bulb, in all its variants (incandescent, fluorescent, LED).

For light fixtures, the luminous flux can range from a few lumes for deco lights to tens of thousands for stadium lights.

For linear light fixtures such as LED strips, the luminous flux also per meter is very useful. You can find LED strips with a flux from 100 lumens to over 10.000 lumens. 

How many lumens per meter are needed is based on the application:

  • Ambient light or highlight of objects or furniture elements: up to 500 lumens per meter (160lm per foot)

  • Highlight architectural elements: up to 900 lumens per meter or 300 lm/foot 

  • General illumination via lines of light in residential spaces: up to 2400 lumens per meter (600 lm/foot), depending on the cove design and materials used. In many cases, up to 1500 lumens per meter (500 lm/foot) is sufficient

  • General illumination via lines of light in office and commercial spaces: up to 5000 lumens per meter (1600 lm/foot), depending on distance between the linear fixture and the area or object that needs to be illuminated.
At Lumistrips you can find LED strips for all of your lighting needs. From our LumiFlex Economy for ambient light, to the LumiFlex Nichia strips for general residential lighting to the Maxline and Zhaga LED modules for office and commercial lighting.

LumiFlex Flexible LED Strips up to 2600 lm/m

LinearZ Plug & Play modules up to 4100 lm/m

MaxLine LED Modules up to 8000 lm/m