Luminous flux and colour maintenance investigation of integrated LED lamps

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    This article will present an investigation of the luminous flux and colour maintenance of white LED based retrofit lamps. The study includes 23 different types of integrated LED lamps, covering 18 directional and 5 non-directional. Luminous flux and colour data for operation up to 20000 h has been measured, and will be presented. Data for the first 6000 h of operation is used for studying extrapolation method and results are compared with experimental data for operation over 19000 h. It has been further examined when catastrophic failures occurred
    Original languageEnglish
    Title of host publicationProceedings of CIE 2014 : Lighting quality and energy efficiency
    PublisherCIE - International Commission on Illumination
    Publication date2014
    ISBN (Print)978-3-902842-49-7
    Publication statusPublished - 2014
    EventCIE 2014: Lighting Quality & Energy Effciency - Hotel Istana, Kuala Lumpur, Malaysia
    Duration: 23 Apr 201426 Apr 2014


    ConferenceCIE 2014
    LocationHotel Istana
    CityKuala Lumpur


    • LED
    • LEDi
    • Lumen maintenance
    • Colour maintenance
    • Lifetime


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    • CIE 2014

      Anders Thorseth (Participant)

      23 Apr 201426 Apr 2014

      Activity: Attending an eventParticipating in or organising workshops, courses, seminars etc.

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