LED Monkey Talks About Lumen Maintenance and LED Longevity
We’ve all experienced the trauma that comes with an old light bulb popping and then the scramble around in the dark while looking for a new one. Or that annoying and inconvenient trip to the shops, whereupon we discover that we have no idea what type of light bulb it was!
So, here’s a brief explanation of why that never needs to happen again, thanks to something called LED Lumen Maintenance!
Prior to the advent of LED technology, incandescent and halogen light bulbs would, quite literally, "burn out" when they reached the end of their life. Not dependent upon a white-hot tungsten filament to produce their light, LED bulbs don’t tend to burn out. Instead, the intensity of their light output begins to fade over a long period of time.
What is Lumen Maintenance?
Lumen Maintenance is a measurement that’s used to evaluate the decrease in light output of a bulb that occurs over time. An LED light bulb’s life is defined as over when its lumens (brightness) are reduced by 70% of their initial intensity. This is what’s known as the LED’s L70 Rating.
Thus, the L70 measurement you’ll see on all our LED light bulbs’ packaging, informs you of the length of time you can expect it to provide a light intensity that’s similar to the day you installed it.
What Does The L70 Rating Mean?
In order to fulfil its L70 Rating, an LED light bulb must maintain at least 70% of its initial lumens during its rated lifespan.
For example, an LED like the majority of ours, with an expected lifespan of 50,000 hours, should be producing 70% of the light output that it was producing when it was brand new, after it has been used for 50,000 hours.
It’s not at all unusual for an LED light bulb to reach 50,000 hours of life without losing 70% of its light efficacy. And 50,000 hours is a pretty long time for any kind of bulb to last!
Indeed, an LED will outlast a CFL (Compact Fluorescent Lamp) by up to 5 times and will still be going strong long after 20 incandescent bulbs have burned out! Yes, even if you have an LED lit for eight hours every day, it can be expected to last for 17.2 years before its lumens fall to an unacceptable level!
Why Do LEDs Last So Long?
In lighting terms, heat is the enemy, so LEDs that produce very little of it, suffer very little wear-and-tear, lasting longer as a result. They do produce a tiny amount, but that's directed away from their vulnerable parts (the LEDs themselves), by a super-conductive metal heat-sink at their base.
The video below illustrates exactly why LEDs last so much longer than old style light bulbs, and it's all down to heat!
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If you’d like to discuss the benefits of LED lighting any further, please don’t hesitate to contact a member of our customer service team on 0800 999 7797 or send an e-mail to: firstname.lastname@example.org