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Evaluation of different general V(λ) mismatch indices of photometers for LED-based light sources in general lighting applications

Krüger, Udo ; Ferrero, Alejandro; Mantela, Ville; Thorseth, Anders; Trampert, Klaus ORCID iD icon 1; Pellegrino, Olivier; Sperling, Armin
1 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)

Abstract:

The general V(λ) mismatch index, ${f}_{1}^{\prime }$, of a photometer quantifies the deviation between its determined relative spectral responsivity, ${s}_{\text{rel}}\left(\lambda \right)$, and its nominal responsivity, the spectral luminous efficiency function for photopic vision, V(λ). LED-based light sources now dominate in general lighting, displacing incandescent and fluorescent lamps. Furthermore, the calibration of photometers will very likely see the replacement of the reference CIE standard illuminant A with CIE reference spectrum L41. The article evaluates the consequences. Should we also change the definition of the general V(λ) mismatch index? Based on performance criteria, the individual indices are evaluated using various datasets with the help of statistical analyses. As a result, the authors can conclude that the current definition works very well even under changed calibration and application conditions and does not need to be changed. Other evaluated indices for a new index definition perform only slightly better in some cases, but do not generate generally better properties.


Verlagsausgabe §
DOI: 10.5445/IR/1000153251
Veröffentlicht am 02.12.2022
Originalveröffentlichung
DOI: 10.1088/1681-7575/ac8f4d
Scopus
Zitationen: 3
Web of Science
Zitationen: 4
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.12.2022
Sprache Englisch
Identifikator ISSN: 0026-1394, 1681-7575
KITopen-ID: 1000153251
Erschienen in Metrologia
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 59
Heft 6
Seiten Art.-Nr.: 065003
Vorab online veröffentlicht am 11.11.2022
Schlagwörter spectral matching, photometer, measurement uncertainty, bootstrap, Monte Carlo, f1′
Nachgewiesen in Web of Science
Dimensions
Scopus
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