[3.10.3] V’ (Λ)
The spectral luminous efficiency function for scotopic vision, adopted by the International Commission on Illumination (CIE) in 1951. (See Table T-7.)
NOTE: This term and its definition were changed in ANSI/IES RP-16-17 Addendum 1.
Previous name: values of spectral luminous efficiency for scotopic vision.
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