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luminous flux
noun
, Optics.
- the rate of transmission of luminous energy: expressed in lumens.
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 Φv
luminous flux
/ lo̅o̅′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
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Word History and Origins
Origin of luminous flux1
First recorded in 1925–30
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