LED-Based Luminaire Color Shift Acceleration and Prediction

Guangjun Lu, Willem Dirk van Driel (Editor), Xuejun Fan, Jiajie Fan, Guo Qi Zhang

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientific

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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.
Original languageEnglish
Title of host publicationSolid State Lighting Reliability Part 2
Subtitle of host publicationComponents to Systems
EditorsWillem Dirk van Driel, Xuejun Fan, Guo Qi Zhang
Place of PublicationCham
Number of pages19
ISBN (Electronic)978-3-319-58175-0
ISBN (Print)978-3-319-58174-3
Publication statusPublished - 2018

Publication series

NameSolid State Lighting Technology and Application Series
PublisherSpringer International Publishing
ISSN (Print)2196-4203
ISSN (Electronic)2196-4211

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Color shift
  • Degradation
  • Oxidation


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