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Luminous efficiency

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Luminous efficiency functions consistent with the Stockman & Sharpe cone fundamentals

2-deg function

Units	0.1 nm steps	1 nm steps	5 nm steps	Sharpe, Stockman, Jagla & Jägle (2005) 2-deg photopic V*(l)
Quantal (log)
Energy (log)
Energy (linear)

10-deg functions

Units	0.1 nm steps	1 nm steps	5 nm steps
Quantal (log)
Energy (log)
Energy (linear)

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CIE (1924) Photopic V(l)

modified by Judd (1951)

modified by Vos (1978) [also known as CIE V_M(l)]

CIE (1951) Scotopic V'(l)

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