Given that LED lamp life and lumen maintenance are inseparable, what lamp lumen depreciation (LLD) factor should be employed for LED lighting systems?
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.
See other definitions of LLD
We have 77 other meanings of LLD in our Acronym Attic
- Logical Link Control/Sub-Network Access Protocol (usually seen as LLC/SNAP)
- Ling Liang Church Sau Tak (school; Hong Kong)
- Ladies Loves Chris Taylor
- Ligand-to-Ligand Charge Transfer (electronics)
- Lincoln Land Conservation Trust (Lincoln, MA)
- Logical Link Control Translator
- Lyme Land Conservation Trust (est. 1966; Lyme, CT)
- Doctor of Laws
- Labeled Let Down (skate team)
- Lamb Lies Down on Broadway (band Genesis album/tour)
Samples in periodicals archive:
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.