Title: Practical limitations of near-field goniophotometer measurements imposed by a dynamic range mismatch
Authors: Audenaert, Jan
Acuna, Paula
Hanselaer, Peter
Leloup, Frédéric # ×
Issue Date: 9-Feb-2015
Publisher: Optical Society of America
Series Title: Optics Express vol:23 issue:3 pages:2240-2251
Abstract: Within near-field goniophotometry, measurement results of both an imaging luminance measurement device and a photometer detector are combined to generate the luminous intensity distribution of a light source. The simultaneous use of these two detectors may engender incorrect measurement results, due to their difference in dynamic range. In this paper, near-field and far-field based luminous intensity distribution measurements of two luminaires are presented, in order to exemplify the problem. Results demonstrate that the distributions obtained from near-field measurements may deviate from the correct intensity distribution, by an amount of up to 16% of the total luminous flux of the luminaire. A method to check for the correctness of the luminous intensity distribution from the near-field measurement, the so-called sanity check, is discussed. To conclude, some possible solutions to eliminate the dynamic range mismatch induced errors are treated.
ISSN: 1094-4087
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering (ESAT) TC, Technology Campuses Ghent and Aalst
Technologiecluster ESAT Elektrotechnische Engineering
ESAT - ELECTA, Electrical Energy Computer Architectures
× corresponding author
# (joint) last author

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