Analyses on Human Responses to Illuminance Variations for Resident-Friendly Lighting Environment in a Small Office

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This study examines the influence of illuminance variation on visual perception and mood in a small office. Field measurements and annoyance tests were performed in a full-scale mock-up office space. Subjects conducted paper-based and computer-based reading tasks when six instantaneous fluctuation ranges were given under 500 lx and 650 lx base level conditions. Results indicate that equal amounts of instantaneous illuminance fluctuation could influence visual perception differently under these two base level conditions. Visual annoyance under the 500 lx base level was more severe than that under the 650 lx base level. The acceptable illuminance fluctuation ranges that did not cause visual annoyance under 500 lx base level conditions were 141.3 lx for paper-based tasks and 187.3 lx for computer-based tasks. Under 650 lx base level conditions, the acceptable ranges were 200.3 lx and 252.4 lx for paper-based and computer-based tasks respectively. The mean mood and perception responses for visual thresholds under the 650 lx base level showed more positive feelings than those under the 500 lx base level. Multiple linear predictive models showed that feelings of visual sensitiveness to illuminance variation, visual distraction, and stimulation were significant contributors to visual annoyance under fluctuating illuminance conditions.
Publisher
SAGE PUBLICATIONS LTD
Issue Date
2013-06
Language
English
Article Type
Article
Citation

INDOOR AND BUILT ENVIRONMENT, v.22, no.3, pp.535 - 550

ISSN
1420-326X
DOI
10.1177/1420326X12446208
URI
http://hdl.handle.net/10203/174119
Appears in Collection
GCT-Journal Papers(저널논문)
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