What Does Lm/w Mean on A Led?

"lm/W" stands for lumens per watt, and it is a measure of luminous efficacy. Luminous efficacy represents the efficiency of a light source in converting electrical power into visible light. Specifically, it measures how many lumens of light are produced per watt of electrical power consumed.

In the context of LED lighting, "lm/W" is a key metric used to assess the energy efficiency and brightness of the LED. A higher lm/W value indicates that the LED is more efficient in converting electricity into visible light, which is generally desirable for energy-saving and environmentally friendly lighting solutions.

For example, if an LED light has a luminous efficacy of 100 lm/W, it means that the light produces 100 lumens of visible light for every watt of electrical power it consumes. This metric is crucial for comparing the efficiency of different lighting technologies and selecting energy-efficient lighting solutions.