Validation of the fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Kokka, Alexander
dc.contributor.author Pulli, Tomi
dc.contributor.author Ferrero, Alejandro
dc.contributor.author Dekker, Paul
dc.contributor.author Thorseth, Anders
dc.contributor.author Kliment, Petr
dc.contributor.author Klej, Adam
dc.contributor.author Gerloff, Thorsten
dc.contributor.author Ludwig, Klaus
dc.contributor.author Poikonen, Tuomas
dc.contributor.author Ikonen, Erkki
dc.date.accessioned 2019-08-15T08:26:46Z
dc.date.available 2019-08-15T08:26:46Z
dc.date.issued 2019-06-18
dc.identifier.citation Kokka , A , Pulli , T , Ferrero , A , Dekker , P , Thorseth , A , Kliment , P , Klej , A , Gerloff , T , Ludwig , K , Poikonen , T & Ikonen , E 2019 , ' Validation of the fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres ' Metrologia , vol. 56 , no. 4 , pp. 045002 . https://doi.org/10.1088/1681-7575/ab17fe en
dc.identifier.issn 0026-1394
dc.identifier.issn 1681-7575
dc.identifier.other PURE UUID: bd68b1c5-6f87-4d51-9fab-7d0c68c8230c
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/validation-of-the-fisheye-camera-method-for-spatial-nonuniformity-corrections-in-luminous-flux-measurements-with-integrating-spheres(bd68b1c5-6f87-4d51-9fab-7d0c68c8230c).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/35836758/ELEC_Kokka_Validation_of_the_fisheye_Metrologia.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/39740
dc.description.abstract In this paper, the fisheye camera method is validated for spatial non-uniformity corrections in luminous flux measurements with integrating spheres. The method was tested in eight integrating spheres with six LED lamps, and the determined angular intensity distributions and spatial non-uniformity correction factors were compared with the results of five goniophotometers. The average closeness score, describing the similarity between any two distributions, was 94.6 out of 100 for the distributions obtained using the fisheye camera method when compared with the goniophotometric results. The average closeness score for the five goniophotometers, when each goniophotometer was compared with the other four, was 96.6. On average, the relative deviation between the two methods was 0.05% when calculating the spatial corrections. The most significant sources of uncertainty for the fisheye camera method were large, view-obstructing sphere elements residing close to the camera port. en
dc.format.extent 9
dc.format.extent 045002
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher IOP PUBLISHING LTD
dc.relation.ispartofseries Metrologia en
dc.relation.ispartofseries Volume 56, issue 4 en
dc.rights openAccess en
dc.subject.other 114 Physical sciences en
dc.title Validation of the fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Metrology Research Institute
dc.contributor.department Department of Signal Processing and Acoustics
dc.contributor.department CSIC
dc.contributor.department VSL Dutch Metrology Institute
dc.contributor.department Technical University of Denmark
dc.contributor.department Czech Metrology Institute
dc.contributor.department Philips Lighting
dc.contributor.department Physikalisch-Technische Bundesanstalt (PTB)
dc.contributor.department Osram GmbH
dc.contributor.department VTT Technical Research Centre of Finland
dc.contributor.department Department of Signal Processing and Acoustics en
dc.subject.keyword ERRORS
dc.subject.keyword REALIZATION
dc.subject.keyword UNIT
dc.subject.keyword angular intensity distribution
dc.subject.keyword fisheye camera method
dc.subject.keyword integrating sphere
dc.subject.keyword luminous flux
dc.subject.keyword measurement uncertainty
dc.subject.keyword photometry
dc.subject.keyword spatial correction
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201908154785
dc.identifier.doi 10.1088/1681-7575/ab17fe
dc.type.version publishedVersion


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