Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

What is the mean lumen output of a fluorescent lamp, and how is it different from the initial lumens?

April 26, 2017different fluorescent initial lamp lumen lumens mean output

0

Posted

What is the mean lumen output of a fluorescent lamp, and how is it different from the initial lumens?

1 Answer

0

Posted

Since fluorescent lamps have such a long life compared to incandescent lamps, eventually the brightness (lumen output) of the lamp will begin to decrease. Because of this, fluorescent lamps have an initial lumen rating and a mean lumen rating. The mean lumen output is measured at 40% of the lamp life. NOTE: Decorative or colored bulbs do not have a lumen rating since they are not considered a primary source of lights, only decorative.