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luminaire maintenance factor
LMF
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.