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Definitions for
"Lamp Lumen Depreciation"
Keywords:
lumen
,
lld
,
attrition
,
blackening
,
depreciation
Related Terms:
Lld
,
Luminaire efficiency
,
Lumen maintenance
,
Compact fluorescent lamp
,
Ballast factor
,
Cfl
,
Halogen lamps
,
Compact fluorescent
,
Tungsten-halogen lamp
,
Tungsten halogen lamp
,
Hmi
,
Light loss factor
,
Reflector lamp
,
Lumens per watt
,
Fixture
,
Halogen light
,
Photoflood
,
Quartz lamp
,
Halogen lamp
,
Mercury vapor lamp
,
Coefficient of utilization
,
Metal halide lamp
,
Llf
,
Luminaire
,
Metal halide
,
Light source
,
Lamp
,
Halogen bulb
,
Hid
,
Bulb
,
Incandescent lamp
,
Existing light
,
Lamp life
,
High intensity discharge
,
High-intensity discharge lamp
,
Incandescent light bulb
,
Lumens
,
Par lamp
,
Tungsten light
,
Lamps
,
Par lamps
,
Candlepower
,
Par
,
Floodlight
,
Artificial light
,
Incandescent bulb
,
Lighting
,
Key light
,
Luminous efficacy
Lumen depreciation is a term that describes the normal attrition of light. Essentially, the longer a lamp operates, the less light it delivers. Different light sources have different rates of depreciation.
mylightbulb.net
the reduction in lamp light output that progressively occurs during lamp life.
ldpi-inc.com
The decrease in lumen output that occurs as a lamp is operated, until failure. Also referred to as lamp lumen depreciation (LLD).
members.aol.com
The decrease over time of lamp lumen output, caused by bulb wall blackening, phosphor exhaustion, filament depreciation, and other factors.
growlights.com
Multiplier factor in illumination calculations for reduction in the light output of a lamp over a period of time.
sitelighting.com
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