Luminous flux (lm) vs. power (W): how to understand lighting parameters
Two key aspects for luminaires: luminous flux and electrical output. You'll learn that luminous flux in lumens (lm) measures the total amount of light emitted by a luminaire and is key to achieving optimum illuminance in different spaces, that wattage (W) measures electrical output, but modern technology, especially LED, shows that a higher wattage does not necessarily mean higher luminance. The relationship between lumens and watts is a key factor in evaluating the efficiency of luminaires and optimising the energy efficiency of lighting. The benefits of LED sources that combine high light output with minimal energy consumption.