# 17-29-148

luminaire maintenance factor

LMF

fLM

quotient of the efficiency of a luminaire at a given instant and the initial efficiency value

Note 1 to entry: The luminaire maintenance factor does not include depreciation in the luminous flux output of the light source.

Note 2 to entry: The luminaire maintenance factor has unit one.

Note 3 to entry: This entry was numbered 17-710 and 17-687 in CIE S 017:2011.

Publication date: 2020-12