How to define LED lifetime
LED LifetimeEveryone in LED lighting industry know the lifetime of LED light, but do you know how to indicate the end life and related lifetime? L and B can help you to know clearly. L defines the percentage of lumen comparing with the initial lumens. B value means the failure data at the L data. So LB value indicate the real lifetime at a certain hours. Like L90B10 at 50,000 hours means the LED lamp keeping 90% lumen from initial lumen [...]