What is Lumen?
Lumens are the unit of measurement used to determine how much visible light is produced by a light source.
What is a tile?
Watts are used to measure power. How many lumens a light source can produce depends on the power provided. Some of the power sent to the fixture is inevitably lost due to inefficiencies in the mechanical and electrical components. A more efficient lighting system converts more electricity into light rather than heat.
What is system performance?
Efficiency (measured in lumens per watt) is a measure of how efficiently a lamp converts power (watts) into light (lumens). To better understand the true performance of the luminaire, we can use a simple efficiency calculation.