Spectral Luminous Efficacy in Illumination Formulas

Spectral Luminous Efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt (lm/w). And is denoted by K_λ. Spectral Luminous Efficacy is usually measured using the Lumen Per Watt for Luminous Efficacy. Note that the value of Spectral Luminous Efficacy is always negative.

Formulas to find Spectral Luminous Efficacy in Illumination

fxSpectral Luminous EfficacyGo

List of variables in Illumination formulas

fx Maximum Sensitivity Go

fx Photopic Efficiency Value Go

FAQ

What is the Spectral Luminous Efficacy?

Spectral Luminous Efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt (lm/w). Spectral Luminous Efficacy is usually measured using the Lumen Per Watt for Luminous Efficacy. Note that the value of Spectral Luminous Efficacy is always negative.

Can the Spectral Luminous Efficacy be negative?

Yes, the Spectral Luminous Efficacy, measured in Luminous Efficacy can be negative.

What unit is used to measure Spectral Luminous Efficacy?

Spectral Luminous Efficacy is usually measured using the Lumen Per Watt[lm/W] for Luminous Efficacy. Lumen Per Kilowatt[lm/W] are the few other units in which Spectral Luminous Efficacy can be measured.

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