LED-Based Luminaire Color Shift Acceleration and Prediction

Book chapter (2018)

Authors

G. Lu State Key Laboratory of Solid State Lighting, Electronic Components, Technology and Materials - EEMCS , Beijing Research Center
Xuejun Fan Lamar University, State Key Laboratory of Solid State Lighting
Jiajie Fan Hohai University, State Key Laboratory of Solid State Lighting, Beijing Research Center
Kouchi Zhang Chinese Academy of Sciences, Electronic Components, Technology and Materials - EEMCS

Contributors

W.D. van Driel Philips Lighting Research, Electronic Components, Technology and Materials - EEMCS (editor)
Research Group
Electronic Components, Technology and Materials (EEMCS) (TU Delft)
Copyright: © 2018 G. Lu, Xuejun Fan, Jiajie Fan, Kouchi Zhang
DOI
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https://doi.org/10.1007/978-3-319-58175-0_9
Color shift Degradation Oxidation
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Published Date

2018

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Components, Technology and Materials

Abstract

Color stability is of major concern for LED-based products. Currently, much effort is done on lumen maintenance, and for color shift, no agreed method currently exists, be it from testing or from prediction side. To investigate the physics of color shift, we present experiments of each individual part failure of each individual part that are present in LED-based products. In order to develop a color shift prediction method, it is imperative to investigate the color shift contribution by each individual part. We present a new method to predict color shift on a system level, which we named the view factor approach. We compare this prediction method with experiments on luminaire level to conclude that we have taken satisfactory first steps in the field of color shift predictions for LED-based systems.