Title: Report on the Results of the Comparison on the Luminous Intensity, Luminance and Chromaticity
Authors: Yaran, Şenel, Tübitak National Metrology Institute, Ankara, TURKEY
Kösemen, Zühal Alpaslan, Tübitak National Metrology Institute, Ankara, TURKEY, ORCID: 0000-0002-5085-1271
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Resource Type: Text / Report
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Dates: Available: 2024-02-23
File: Download File (application/pdf) 4.62 MB (4843677 Bytes)
MD5 Checksum: ff9f90c51ea0d8242d4125a55c320dcf
SHA256 Checksum: 8754aee1026e133df85013e706159cc06d8d0723d7721ff8e2fe8496df22ae52
Keywords Measurement Comparison ; Spectral Correlation ; Luminous Intensity ; Luminance ; Chromaticity Coordinate
Abstract: A measurement comparison on luminous intensity, luminance and chromaticity corrdinates performed within the normative joint research project EMPIR 19NRM01 RevStdLED by using six LED-based standard lamps. This LED-based standard light sources, two white ones for luminous intensity and three coloured and one white one for luminance, were provided by the participants PTB and TechnoTeam, respectively. The acomparison piloted by TUBITAK was carried out between the eight particpants TechnoTeam, Jeti, candelTec, CSIC, LNE, TUBITAK, NMISA and PTB. The aim of this comparison was to compare the different abilities of the participants in respect to spectral correlations. In the full evaluation the spectral correlations were only taken into account with respect to the correlation of the chromaticity coordinates. Nevertheless there was still a novelty, as with this intercomparison the results of the chromaticity coordinates of the LED lamps and their uncertainties were determined by TUBITAK with the help of TechnoTeam for the first time not only according to the classical GUM, (JCGM 100:2008), as independent coordinates, but correctly taken as multivariate quantities (JCGM 102:2011), to which an approach for determining the 2-dimensional Degree of Equivalence (DoE) was provided in a Python Toolbox.
Funding: European Commission (EC), ISNI: 0000 0001 2162 673X, Grant Title: Revision and extension of standards for test methods for LED lamps, luminaires and modules, Grant Number: EMPIR 19NRM02