lumen-hour

lumen-hour

[′lü·mən ¦au̇r]
(optics)
A unit of quantity of light (luminous energy), equal to the quantity of light radiated or received for a period of 1 hour by a flux of 1 lumen. Abbreviated lm-hr.
References in periodicals archive ?
lighting energy consumption nearly in half (46 percent), and forecasts that the use of LEDs in such applications will mushroom over the next two decades, accounting for just over one-third all lumen-hour sales by 2020 and nearly three-fourths by 2030.
Based on existing life-cycle assessment literature, the life-cycle energy consumption of LED and CFL lamps is similar: around 3,900 MJ per 20 million lumen-hours.