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What does LLD stand for?

LLD stands for Lamp Lumen Depreciation (light loss measurement)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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We have 77 other meanings of LLD in our Acronym Attic

Samples in periodicals archive:

Given that LED lamp life and lumen maintenance are inseparable, what lamp lumen depreciation (LLD) factor should be employed for LED lighting systems?
Deco induction luminaires feature instant-on, no restrike, cold weather performance down to-40 deg C/F, electrode-less lamps for vibration resistance, superior lamp lumen depreciation with 80 percent lumens at 60,000 hours, 90 CRI color and a 10-year warranty.
100] = Measured mean initial illuminance, which is taken at 100 hours to account for lamp seasoning LLD = Lamp lumen depreciation LDD = Luminaire dirt depreciation LBO = Lamp burnout factor There may also be recoverable light loss associated with lamp tilt.