【Lighting Knowledge】Illuminance
Jun 29, 2016
Definition:
Illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception.
Explain:
Illuminance = Lumen/ Square Meter
| Place | Illuminance (lux) |
|---|---|
| Under the blazing sun | 100,000 |
| Cloudy day | 80,000 |
| Drawing | 600 |
| Reading | 500 |
| Night baseball field | 400 |
| Office / Classroom | 300 |
Application:
High Illuminance
Low Illuminance