colour.luminous_flux#

colour.luminous_flux(sd: colour.colorimetry.spectrum.SpectralDistribution, lef: Optional[colour.colorimetry.spectrum.SpectralDistribution] = None, K_m: float = CONSTANT_K_M) float[source]#

Return the luminous flux for given spectral distribution using given luminous efficiency function.

Parameters
Returns

Luminous flux.

Return type

numpy.floating

References

[Wikipedia03b]

Examples

>>> from colour import SDS_LIGHT_SOURCES
>>> sd = SDS_LIGHT_SOURCES['Neodimium Incandescent']
>>> luminous_flux(sd)  
23807.6555273...