colour.luminous_efficiency¶
-
colour.
luminous_efficiency
(spd, lef=SpectralPowerDistribution(name='CIE 1924 Photopic Standard Observer', ...))[source]¶ Returns the luminous efficiency of given spectral power distribution using given luminous efficiency function.
Parameters: - spd (SpectralPowerDistribution) – test spectral power distribution
- lef (SpectralPowerDistribution, optional) – \(V(\lambda)\) luminous efficiency function.
Returns: Luminous efficiency.
Return type: numeric
References
Examples
>>> from colour import LIGHT_SOURCES_RELATIVE_SPDS >>> spd = LIGHT_SOURCES_RELATIVE_SPDS['Neodimium Incandescent'] >>> luminous_efficiency(spd) 0.1994393...