Light source characterization and air movement under CIE S 025

Anders Thorseth, A. S. J. Bergen

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


    In 2015, the International Commission on Illumination (CIE) published the standard CIE S 025/E:2015 Test Method for LED Lamps, LED Luminaires and LED Modules. This document contains a number of standard test conditions, including laboratory room preparation, environmental and electrical provisions as well as requirements for the performance of testing and measurement equipment. One of the environmental considerations is a restriction of the airflow incident on the device under test. The sensitivity of LED source based devices to airflow is important for estimating the uncertainty originating from airflow. We find that for most of the tested devices the sensitivity is on the order of 5 %/(m/s), which is consistent with CIE S 025. However, we also found an example of a device with a larger sensitivity. Additionally we study general airflow measurements and influence of turbulence.
    Original languageEnglish
    Title of host publicationProceedings of the Conference on "Smarter Lighting for Better Life" at the CIE Midterm Meeting 2017
    PublisherCIE - International Commission on Illumination
    Publication date2017
    ISBN (Print)978-3-901906-95-4
    Publication statusPublished - 2017
    EventCIE Midterm Meeting 2017 - Ramada Plaza Jeju Hotel, Jeju, Korea, Republic of
    Duration: 23 Oct 201725 Oct 2017


    ConferenceCIE Midterm Meeting 2017
    LocationRamada Plaza Jeju Hotel
    Country/TerritoryKorea, Republic of


    • Photometry
    • Testing
    • Airflow
    • Solid state lighting


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