| Titel: | Sensitivity Evaluation of Measurement Uncertainty Contributions of Spectral Data for Calculated Integral Quantities |
| Autoren: |
Krüger, Udo, TechnoTeam Bildverarbeitung GmbH, Ilmenau, Ferrero, Alejandro, Instituto de Óptica, Consejo Superior de Investigaciones Científicas, Madrid, SPAIN Thorseth, Anders, Technical University of Denmark, Roskilde, DENMARK Pellegrino, Olivier, Instituto Português da Qualidade, Caparica, PORTUGAL Dubard, Jimmy, Laboratoire National de métrologie et d’Essai (LNE), Paris, FRANCE Alle Autoren anzeigen (7) |
| Beitragende: | HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887 |
| Seiten: | 15 |
| Sprache: | en |
| DOI: | 10.7795/810.20240208A |
| Art der Ressource: | Text / Conference Proceedings |
| Herausgeber: | Physikalisch-Technische Bundesanstalt (PTB) |
| Beziehungen: | IsIdenticalTo: DOI 10.25039/x50.2023.OP061 |
| Daten: |
Verfügbar: 2024-02-23 |
| Datei: |
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| Schlagworte | Photometry ; Colorimetry ; Measurement Uncertainty ; Monte Carlo Simulation ; Correlation |
| Zusammenfassung: | Integrating spectral data (spectral responsivities of photometers or spectral distributions of light sources) to calculate quantities such as tristimulus values is straightforward at first sight. However, estimating the measurement uncertainty of these integrated quantities is challenging. When calculating integral photometric quantities, some uncertainty contributions from the spectral data transfer to the final results, some "cancel out", some "average out" and others increase or decrease their weight by correlation. The spectral quantities are usually assumed to be uncorrelated when deriving other quantities by integration, which is typically not justified. Using Monte Carlo simulations (MCS) and orthogonal functions, this paper shows that the neglection of partial spectral correlations may lead to a significant underestimation of the measurement uncertainty of these integral quantities, and how to use this information for better estimation. |
| Förderung: | 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 |