Lumen in Illumination Formulas

Lumen is a unit of measurement that quantifies the total amount of visible light emitted by a light source. It represents the brightness or light output of the source, irrespective of direction. And is denoted by Lm. Lumen is usually measured using the Candela Steradian for Luminous Flux. Note that the value of Lumen is always negative.

Formulas to find Lumen in Illumination

fxLumensGo

Illumination formulas that make use of Lumen

fxLuminous IntensityGo

List of variables in Illumination formulas

fx Candle Power Go

fx Solid Angle Go

FAQ

What is the Lumen?

Lumen is a unit of measurement that quantifies the total amount of visible light emitted by a light source. It represents the brightness or light output of the source, irrespective of direction. Lumen is usually measured using the Candela Steradian for Luminous Flux. Note that the value of Lumen is always negative.

Can the Lumen be negative?

Yes, the Lumen, measured in Luminous Flux can be negative.

What unit is used to measure Lumen?

Lumen is usually measured using the Candela Steradian[cd*sr] for Luminous Flux. Lumen[cd*sr], Lux Square Meter[cd*sr] are the few other units in which Lumen can be measured.

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