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FAQ

Why is the life of LEDs measured as lumen depreciation?

 

Unlike conventional light sources that reduce in output and eventually fail, LED products do not normally suddenly fail. Instead, the light output reduces over time.

The normal convention is to quote the life when the output has reduced by 30%. I.e. when there is 70% light output remaining. This is often quoted as the L70 life and is measured in hours.

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HEN on the Road One Day Technical Conference

11.05.2017, Surrey

 

Smart to Future Cities 

16.05.2017, London

 

Smart Buildings 

23.05.2017, London

 

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