ILLUMINANCE describes the density of luminous flux at a point on a surface. It decreases with the square of the distance.
The unit of measurement is lux (lx) or lm / m². 1lx = 1 lm / m².
Genres de fondamental: inverse
Luminous flux en illuminance
THE LUMINOUS FLUX describes the amount of light emitted by a light source.
The unit of measure is the lumen (lm).