00000nam 2200000zi 4500 9.885039 CaOODSP 20231031133941 m o d f cr ||||||||||| 200226t20192019onca ob f000 0 eng d 9780660342450 CaOODSP eng rda CaOODSP n-cn--- e-fr NR24-38/1-2020E-PDF Veitch, Jennifer A. author. (Jennifer Ann), 1964- Visual perception under energy-efficient light sources : detection of the stroboscopic effect under low levels of SVM : final report / Jennifer A. Veitch and Christophe D. Martinsons. [Ottawa] : National Research Council Canada = Conseil national de recherches Canada, 2019. ©2019 1 online resource (1 volume (various pagings) : colour illustrations text txt rdacontent computer c rdamedia online resource cr rdacarrier "December 2019." "NRC Report Number: NRCC-CONST-56395." "CSTB Report Number: SC-ECE-2019-111." Includes bibliographical references. "Temporal Light Modulation (TLM) or “flicker” as it is colloquially known can have visual, neurobiological, performance, and cognitive effects on viewers. The International Electrotechnical Commission and the Commission Internationale de l’Eclairage have identified two metrics that may be used to characterize lighting systems’ TLM: PstLM, to predict visible flicker at frequencies below 80 Hz; and SVM, Stroboscopic Visibility Measure, for the higher frequency stroboscopic effect. While scientific development of these metrics and their associated measurement protocols continue, there is a parallel discussion taking place concerning the appropriate levels for these metrics in regulations. The SSL Annex commissioned a study from researchers at the National Research Council of Canada (NRC) and the Centre Scientifique et Technique du Bâtiment (CSTB) in France, to investigate detection rates for the stroboscopic effect in response to commercially-available light emitting diode (LED) light sources characterized using the SVM, and particularly to assess the population variability in this perception among people sensitive to visual stress. The final report on this work provides insight into both stroboscopic visibility and the acceptability of the conditions for the full sample of 85 people and for the more sensitive individuals. The report follows the publication of a peer-reviewed journal article in Lighting Research and Technology"--Supplied by publisher. Light emitting diodes Health aspects. Stroboscopes Health aspects. Lighting Law and legislation. Diodes électroluminescentes Aspect sanitaire. Stroboscopes Aspect sanitaire. Éclairage Droit. National Research Council Canada, issuing body. Visual perception under energy-efficient light sources : (CaOODSP)9.885040 PDF 1007 KB https://publications.gc.ca/collections/collection_2020/cnrc-nrc/NR24-38-1-2020-eng.pdf