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Effects of non-visual optical flicker in an office with two different light sources.
RISE - Research Institutes of Sweden, Safety and Transport, Measurement Science and Technology. (Tid och Optik)ORCID iD: 0000-0002-0909-626X
RISE - Research Institutes of Sweden, Safety and Transport, Measurement Science and Technology. (Tid och Optik)
2017 (English)In: PROCEEDINGS of the Conference on "Smarter Lighting for Better Life"at the CIE Midterm Meeting 2017., 2017, p. 451-Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

LED lighting solutions sometimes give rise to optical flicker. In most cases, the temporal modulations are too fast to be perceived directly, but may still be noticed through stroboscopic effects. We report on an investigation on how people experience the lighting in an office where two LED lamps are modulated separately with different frequencies. The test subjects performed tasks for evaluation of perception, attention and reaction time. The subjects are found to be affected by the modulated light as the reaction times are shorter and the attention test scores are higher in modulated lighting compared to constant lighting. Furthermore, the study confirms that the stroboscopic effect depends on the nature of the tasks and that it is more easily perceived at lower frequencies but noticed up to at least 400 Hz.

Place, publisher, year, edition, pages
2017. p. 451-
Keyword [en]
Flicker, Stroboscopic effect, Perception, Attention, Reaction time
National Category
Other Engineering and Technologies not elsewhere specified
Identifiers
URN: urn:nbn:se:ri:diva-32839DOI: 10.25039/x44.2017.WP07ISBN: 978-3-901906-95-4 (print)OAI: oai:DiVA.org:ri-32839DiVA: diva2:1164095
Conference
CIE Midterm meeting 2017, Jeju, South Korea. "Smarter Lighting for Better Life"
Projects
ENG62 MeSAIL
Available from: 2017-12-09 Created: 2017-12-09 Last updated: 2017-12-11Bibliographically approved

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Publisher's full texthttp://cie2017.org/download/CIE2017-Abstract_Booklet.pdf# Page=451

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