luminous flux(redirected from PHIV)
Also found in: Thesaurus, Medical, Acronyms, Encyclopedia.
The flow of light per unit of time, especially the flux of visible light expressed in lumens.
(Units) 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: Φv
the rate of transmission of light, expressed in lumens.