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    Chapter

    Statistical Analysis of Lumen Depreciation for LED Packages

    Commercial claims for LED-based products in terms of lumen maintenance are fully based on TM-21 extrapolations using LM-80 data. This chapter indicates that there may be a risk in doing this as TM-21 only reli...

    M. Schuld, Willem Dirk van Driel, B. Jacobs in Solid State Lighting Reliability Part 2 (2018)