+The Lumen (lm) is the SI unit of [Luminous Flux](/wiki/luminous_flux), representing the total perceived power of light emitted from a source. This measure of visible [Light](/wiki/light) output is weighted by the human eye's sensitivity, distinguishing it from raw radiant energy.
+## See also
+- [Lux](/wiki/lux)
+- [Candela](/wiki/candela)
+- [Photometry](/wiki/photometry)
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