luminous flux

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Related to lumenous flux: Luminous efficacy, luminous flux density

lu·mi·nous flux

the quantity of light emitted from a point source in a given time; its unit is the lumen.
Farlex Partner Medical Dictionary © Farlex 2012

flux, luminous

Flow of light which produces a visual sensation. It is measured in lumens.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann