Lux (lx) is the unit of illuminance, which measures how much light is falling on a given surface area. It is used to quantify the intensity of light as perceived by the human eye, taking into account both the brightness and the area over which the light is spread.
The basic equation to calculate illuminance in lux is:
Lux (lx)= Luminous Flux (lm)/Area (m2)
Where: Luminous Flux (lm) is the total amount of light emitted by a light source, measured in lumens (lm). Area (m²) is the surface area over which the light is spread, measured in square meters.
If a 1000 lumen light is illuminating a surface of 10 m², the illuminance would be:
Lux = 1000lm / 10m2 = 100 lux
This means the surface receives an illuminance of 100 lux.
See below images, lux calculation using DIALux software for a meeting room
for a meeting room the target lux should be 500lx and the working plan is at the table (0.8m from floor)
key advantages of a well-thought-out lighting design concept
- Enhanced Aesthetics
- Improved Functionality
- Energy Efficiency
- Safety and Security
- Cost-Effectiveness
- Flexibility and Control
- Sustainability
Lighting Design Software
- DIALux
- Relux
- AGi32
Dialux Output
Leo Alignment
Light Distribution Working Plane
Light Distribution Curve
False Color
