What does L90B10,L80B10,L70B10 mean in LED Luminaires?
L defines the percentage of lumens compared to the initial lumens. It means that the luminous flux of the luminaire that has worked for a period of time is compared with the initial luminous flux of the luminaire.L70 means that the luminous flux is attenuated to 70% of the initial luminous flux, L80 means that the luminous flux is attenuated to 80% of the original luminous flux, and L90 means that