|Document ID (ISN)||100025|
|ISSN - Serial title
||1365-7828 - Lighting Research and Technology
|Convention or series no.
||Newsham G.R., Veitch J.A.
||Lighting quality recommendations for VDT offices: A new method of derivation
||2001, Vol.33, No.2, p.97-116. Illus. 28 ref.
||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.
||lighting; office work; visual display terminals
||illumination levels; subjective assessment; glare; questionnaire survey; work efficiency
||D - Periodical articles
|Country / State or Province||Canada|
||Noise, hearing and vibration
|Broad subject area(s)
||Lighting and colour
Visual display terminals (VDTs)