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A multidirectional spectral measurement method and instrument to investigate non-image-forming effects of light
Built environment, Technische Universiteit Eindhoven, Eindhoven, Netherlands.
Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science. Jönköping University, School of Engineering, JTH. Research area Built Environment.ORCID iD: 0000-0001-7520-1593
Built environment, Technische Universiteit Eindhoven, Eindhoven, Netherlands.
Philips Research, Eindhoven, North Brabant, Netherlands.
2018 (English)In: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501Article in journal (Refereed) Epub ahead of print
Abstract [en]

Light directionality, spectrum, and relevant radiometric or photometric quantity are believed essential factors influencing the magnitude of non-image-forming effects. In this paper, a measurement method and an instrument (the multidirectional spectroradiometer - MuS) is proposed, which considers different light incidents and spectra simultaneously, therefore, enables measurement of light characteristics relevant for non-image-forming effects. The MuS consists of four spectroradiometers measuring in different directions. Four spectrometers using optical fibers were configured to measure the spectral irradiance within a wavelength range from 200 to 1100 nm with ~5.7 nm pixel resolution. Application of the MuS facilitates a better understanding of the non-image-forming light characteristics of spaces. The MuS is tested with stable electric lighting and with dynamic daylight conditions and is proven reliable to perform continuous spectral measurements in different directions simultaneously. Results show a substantial difference in measured radiation magnitude and spectral distribution in different directions, which suggests varying impact on non-image-forming effects.

Place, publisher, year, edition, pages
IOP Publishing , 2018.
National Category
Architectural Engineering
Identifiers
URN: urn:nbn:se:hj:diva-40766DOI: 10.1088/1361-6501/aac937ISI: XYZLocal ID: JTHBebyggdISOAI: oai:DiVA.org:hj-40766DiVA, id: diva2:1223172
Available from: 2018-06-25 Created: 2018-06-25 Last updated: 2018-06-25

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Aries, Myriam

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