Quality criteria for quality light > Illuminance level
Illuminance level Illuminance level - light's 'volume'

The illuminance, measured in lux, should not be confused with the concept of brightness. Illuminance decides how much light a luminaire emits, not how bright that light is. European standards for VDU workstations for example recommend 500 lux. A high illuminance is always essential wherever activities such as working, reading or drawing call for consistently good seeing conditions. BRUCK luminaires guarantee the ideal illuminance for the job in hand.