DocumentCode
3594075
Title
Methods of extrapolation of the LED life time and their comparison based on some LED degradation curves
Author
Wagner, Max ; Tran Quoc Khanh
Author_Institution
Lab. of Lighting Technol., Tech. Univ. Darmstadt, Darmstadt, Germany
fYear
2014
Firstpage
144
Lastpage
146
Abstract
The degradation of luminous flux of LEDs is dependent on the type of LED and its operation conditions. That is why a prediction of lifetime often differs from case to case. Mostly, the testing times are too short to reach 70 or 80% of the beginning luminous flux. So extrapolation has to be used to predict the lifetime. In this study different methods and mathematical functions are compared.
Keywords
light emitting diodes; remaining life assessment; LED degradation curves; LED life time extrapolation; lifetime prediction; luminous flux; mathematical functions; Acceleration; Aging; Degradation; Extrapolation; Light emitting diodes; Mathematical model; Temperature measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid State Lighting (SSLCHINA), 2014 11th China International Forum on
Print_ISBN
978-1-4799-6696-7
Type
conf
DOI
10.1109/SSLCHINA.2014.7127242
Filename
7127242
Link To Document