colour.luminous_flux¶
-
colour.
luminous_flux
(sd, lef=SpectralDistribution(name='CIE 1924 Photopic Standard Observer', ...), K_m=683.0)[source]¶ Returns the luminous flux for given spectral distribution using given luminous efficiency function.
- Parameters
sd (SpectralDistribution) – test spectral distribution
lef (SpectralDistribution, optional) – \(V(\lambda)\) luminous efficiency function.
K_m (numeric, optional) – \(lm\cdot W^{-1}\) maximum photopic luminous efficiency
- Returns
Luminous flux.
- Return type
numeric
References
Examples
>>> from colour import LIGHT_SOURCES_SDS >>> sd = LIGHT_SOURCES_SDS['Neodimium Incandescent'] >>> luminous_flux(sd) 23807.6555273...