luminous flux

noun Optics.

the rate of transmission of luminous energy: expressed in lumens.

Origin of luminous flux

First recorded in 1925–30

Words nearby luminous flux

luminous efficacy, luminous efficiency, luminous emittance, luminous energy, luminous exitance, luminous flux, luminous flux density, luminous intensity, luminous paint, luminous range, lumirhodopsin

British Dictionary definitions for luminous flux

luminous flux

noun

a measure of the rate of flow of luminous energy, evaluated according to its ability to produce a visual sensation. For a monochromatic light it is the radiant flux multiplied by the spectral luminous efficiency of the light. It is measured in lumens Symbol: Φ v

Scientific definitions for luminous flux

luminous flux
[ lōō′mə-nəs ]

A measure of the radiant power of light emitted from a source without regard for the direction in which it is emitted. It is measured in lumens. See also luminous intensity.