van Driel, W.D. (author), Schuld, M. (author), Jacobs, B. (author), Commissaris, F. (author), van der Eyden, J. (author), Hamon, B. (author) Commercial claims for LED-based products in terms of lumen maintenance are fully based on TM-21 extrapolations using LM-80 data. This paper indicates that there may be a risk in doing this as TM-21 only relies on the behavior of the average LED degradation, instead of taking into account the degradation of all individual LEDs. Therefore, we...
journal article 2016
