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

作者：U. Krüger, Alejandro Ferrero, Ville Mantela, Anders Thorseth, Klaus Trampert, Olivier Pellegrino, Armin Sperling · 发表于：Metrologia · 年份：2022 · DOI：10.1088/1681-7575/ac8f4d · 被引用次数：7 · 研究领域：Calibration and Measurement Techniques、Infrared Target Detection Methodologies、Impact of Light on Environment and Health

Abstract The general V ( λ ) mismatch index, f 1 ′ , of a photometer quantifies the deviation between its determined relative spectral responsivity, s rel λ , 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.