colour.luminous_efficiency¶
- colour.luminous_efficiency(sd: colour.colorimetry.spectrum.SpectralDistribution, lef: Optional[colour.colorimetry.spectrum.SpectralDistribution] = None) float [source]¶
Return the luminous efficiency of given spectral distribution using given luminous efficiency function.
- Parameters
sd (colour.colorimetry.spectrum.SpectralDistribution) – test spectral distribution
lef (Optional[colour.colorimetry.spectrum.SpectralDistribution]) – \(V(\lambda)\) luminous efficiency function, default to the CIE 1924 Photopic Standard Observer.
- Returns
Luminous efficiency.
- Return type
References
Examples
>>> from colour import SDS_LIGHT_SOURCES >>> sd = SDS_LIGHT_SOURCES['Neodimium Incandescent'] >>> luminous_efficiency(sd) 0.1994393...