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CISDOC database

Document ID (ISN)100025
CIS number 02-1417
ISSN - Serial title 1365-7828 - Lighting Research and Technology
Year 2001
Convention or series no.
Author(s) Newsham G.R., Veitch J.A.
Title Lighting quality recommendations for VDT offices: A new method of derivation
Bibliographic information 2001, Vol.33, No.2, p.97-116. Illus. 28 ref.
Abstract In an experiment in a mock-up office space, occupants were given control over dimmable lighting circuits after a day working under pseudo-random lighting conditions. Data analysis indicated that the lighting experienced during the day influenced the changes in lighting made at the end of the day. Occupants chose to reduce screen glare if any existed. Even after allowing for the effect of glare, desktop illuminance at day's end varied with the illuminance experienced during the day. Regression of these end-of-day choices relative to the illuminance experienced during the day can yield a preferred illuminance, equivalent to the daytime illuminance at which no change was preferred at day's end. Using this method, preferred illuminance in the range 200-500 lux and luminance ratio were derived. The deviation between participants' lighting preferences and the lighting they experienced during the day was a significant predictor of participant mood and satisfaction. The article is followed by comments by other experts in the field (D.J. Carter and P.Boyce), together with reactions to these comments by the authors.
Descriptors (primary) lighting; office work; visual display terminals
Descriptors (secondary) illumination levels; subjective assessment; glare; questionnaire survey; work efficiency
Document type D - Periodical articles
Country / State or ProvinceCanada
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Lighting and colour
Office work
Visual display terminals (VDTs)