colour.CIE_standard_illuminant_A_function¶

colour.CIE_standard_illuminant_A_function(wl)[source]¶

CIE Standard Illuminant A is intended to represent typical, domestic, tungsten-filament lighting.

Its relative spectral power distribution is that of a Planckian radiator at a temperature of approximately 2856 K. CIE Standard Illuminant A should be used in all applications of colorimetry involving the use of incandescent lighting, unless there are specific reasons for using a different illuminant.

Parameters:	wl (array_like) – Wavelength to evaluate the function at.
Returns:	CIE Standard Illuminant A value at given wavelength.
Return type:	ndarray

References

[CIET14804a]

Examples

>>> wl = np.array([560, 580, 581.5])
>>> CIE_standard_illuminant_A_function(wl)  
array([ 100.        ,  114.4363383...,  115.5285063...])