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WHAT IS AN LED?
Light Emitting Diode (LED) – when an electric current is applied in the forward direction of the device in the LED circuit. The effect is a form of electroluminescence where incoherent and narrow spectrum light is emitted from the P-N junction in a solid state material.

WHAT IS A LUMEN?
Lumen (lm) – unit of measurement of emitted light specified by the LED manufacturer. Amount of light that the LED could produce under perfect conditions without losses.

WHAT IS LUX?
Lux (lx) – unit of measurement of energy emitted from a light fixture; measured as 1 lumen per meter² at a distance of less than 100m. True measure of how light performs.