Title: Good Practice Guide for the consideration of geometric dependencies in the determination of luminous intensity distributions and their uncertainties in goniophotometers
Authors: Trampert, Klaus, Karlsruher Institut für Technologie, Karlsruhe, ORCID: 0000-0001-6178-517X
Sperling, Armin, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.1, Photometrie und Spektroradiometrie, ORCID: 0000-0003-2622-243X
Ledig, Johannes, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.1, Photometrie und Spektroradiometrie, ORCID: 0009-0004-4626-3831
Pellegrino, Olivier, Instituto Português da Qualidade, Caparica, PORTUGAL, ORCID: 0000-0003-4167-1647
Dubard, Jimmy, labLaboratoire National de métrologie et d’Essai (LNE), Paris, FRANCE, ORCID: 0000-0002-7719-4777
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:15
Language:en
DOI:10.7795/530.20240206C
Resource Type: Text / Guide
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Dates: Available: 2024-02-23
File: Download File (application/pdf) 1.33 MB (1396118 Bytes)
MD5 Checksum: 2563daaa951c148644c6314df539ff36
SHA256 Checksum: 0bf4319837417a313aaa6bf5301cd7839fbb86e6e40a18019a402d16f0edbae9
Keywords Goniophotometer ; Luminous Intensity Distribution ; LID ; Measurement Uncertainty
Abstract: This good practice guide deals with the measurement of the luminous intensity distribution (LID) of light sources using goniophotometers and its uncertainty. The aim of classic LID measurements is usually to determine a symmetrical light distribution, whereby the specified geometry is mapped onto the main axes of the luminaire, which define the so-called (A, α), (B, β) and (C, γ) plane-systems for different angles of views. The approach followed in this guide is based on the complete description of the kinematic chain of the goniophotometer from the source to the detector and vice versa, which allows in principle the rigorous determination of uncertainties.
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