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
Returns

Luminous efficiency.

Return type

numpy.floating

References

[Wikipedia03b]

Examples

>>> from colour import SDS_LIGHT_SOURCES
>>> sd = SDS_LIGHT_SOURCES['Neodimium Incandescent']
>>> luminous_efficiency(sd)  
0.1994393...