# 17-21-102

luminescent luminance factor, <of a photoluminescent material>

βv,L

luminance in a given direction that results from emission at the surface of a photoluminescent medium under specified conditions of illumination, compared to the luminance in the same direction by the perfect reflecting diffuser identically illuminated

Note 1 to entry: The luminescent luminance factor depends upon the spectral power distribution of the illumination and this quantity is typically specified for a given CIE illuminant condition.

Note 2 to entry: The luminescent luminance factor has unit one.

Note 3 to entry: This entry was numbered 17-723 in CIE S 017:2011.

Publication date: 2020-12