colour.luminous_efficiency

colour.luminous_efficiency(sd, lef=SpectralDistribution(name='CIE 1924 Photopic Standard Observer', ...))[source]

Returns the luminous efficiency of given spectral distribution using given luminous efficiency function.

Parameters
Returns

Luminous efficiency.

Return type

numeric

References

[Wikipedia03c]

Examples

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