cie

17-29-145

maintained lighting value

value used in lighting calculations that consider (a) the lamp luminous flux depreciation at the planned time of replacement, (b) the luminaire dirt depreciation, and (c) the room surface dirt depreciation (in interiors) or the surface dirt depreciation for other relevant surfaces (in exteriors, where appropriate)

Note 1 to entry: This entry was numbered 17-752 in CIE S 017:2011.

Publication date: 2020-12
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