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Factorscontributeto lumen depreciation
dirt accumulation within the lamp ... the lensleadsto lumen depreciation
This lets less light throughcausinglumen depreciation
other than lamp lumen depreciation(passive) caused bylumen depreciation
The drive current and the heat generated within the LED lightleadsto lumen depreciation
heat generated at the LED junction(passive) primarily caused bylumen depreciation
voltage drivingto causelumens depreciation
a single timecausinglumen depreciation
lamp ageing , lamp maintenance(passive) caused byestimated lumen depreciation
the problem of heat dissipation(passive) caused bylumens depreciation
inferior design(passive) can be caused bylumen depreciation
LEDs aligned in a smaller cross sectional area ... in turnleadsto lumen depreciation
chemical degradation of the phosphor materialcauseslumen depreciation
addition of shatter protection which is the case with the fluorescent tubes(passive) caused bylumen depreciation
substances , even inadvertent substancescould causelumen depreciation
filament emission coating sputterleadsto lumen depreciation
light output to decrease quickly after initial installationcauseslight output to decrease quickly after initial installation
the LED to output light having an unacceptably low level of lumenscausingthe LED to output light having an unacceptably low level of lumens
lights to appear dimmer over timecauseslights to appear dimmer over time
the overall lamp life to decrease from 80,000 + hours of usage to a mere 10,000 hourscould ... causethe overall lamp life to decrease from 80,000 + hours of usage to a mere 10,000 hours
to loss of initial brightnessleadsto loss of initial brightness
a period oftime(passive) caused bya period oftime
from dirt laying on the lens , lamp , reflector , or all threeresultsfrom dirt laying on the lens , lamp , reflector , or all three
in under - lit areas on the road with other street light technologiesresultsin under - lit areas on the road with other street light technologies
low bay 80 90 120 degree reflector 150w led workshop lightledlow bay 80 90 120 degree reflector 150w led workshop light
in a final lumen output of 3360 lumensresultsin a final lumen output of 3360 lumens
in shortened useful liferesultingin shortened useful life
out in LM-80setout in LM-80