luminous flux
Noun
Meaning
the rate of flow of light energy
Source: WordNetSynonyms
lumen
lux
light
intensity
flux
candle
light meter
beam of light
light beam
light quantities
illuminating power
luminous power
beams of light
light flow
light fluxes
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Examples
If its area is 0.1 m 2 (~19" monitor) then the total light emitted, or luminous flux, would thus be 31.4 lm.
Similarly, the peak intensity will be of the total radiated luminous flux.
The source luminous efficacy (LES) is the ratio of the visible light flux emitted (the luminous flux) to the total power input to the source, such as a lamp.