reduced luminance coefficient
luminance coefficient multiplied by the cube of the cosine of the angle of incidence of the light on a point on a surface
Note 1 to entry: The reduced luminance coefficient can be expressed by the equation
Note 2 to entry: The angle of observation,
Note 3 to entry: The reduced luminance coefficient is expressed in steradian to the power minus one (sr−1).
Note 4 to entry: This entry was numbered 17-1046 in CIE S 017:2011.