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Home > Terms > English, UK (UE) > Mean lumens
Mean lumens
The average light output of a lamp over its rated life. Based on the shape of the lumen depreciation curve, for fluorescent and metal halide lamps, mean lumens are measured at 40% of rated lamp life. For mercury, high-pressure sodium and incandescent lamps, mean lumen ratings refer to lumens at 50% of rated lamp life (See Lumen Maintenance).
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Lights & lighting
- Category: Lighting products
- Company: GE
- Product:
- Acronym-Abbreviation:
Other Languages:
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