17-170

CIE standard photometric observer

ideal observer having a relative spectral responsivity curve that conforms to the spectral luminous efficiency function for photopic vision V(λ) or to the function for scotopic vision V'(λ), and that complies with the summation law implied in the definition of luminous flux

See also ISO 23539:2005(E)/CIE S 010/E:2004 Photometry - The CIE System of Physical Photometry

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