Ramasoot, T. and Fotios, S.A. (2012) Lighting and display screens: Models for predicting luminance limits and disturbance. Lighting Research and Technology, 44 (2). 197 - 223. ISSN 1477-1535
Abstract
An investigation of the level of disturbance caused by reflections from a variety of display screens, including interactive whiteboards, has been carried out using three test methods: Luminance adjustment, category rating and reading. The results from the luminance adjustment test and the category rating test were consistent, both showing similar significant effects of lighting-display parameters on the disturbance caused by screen reflections. In contrast, the objective measure of task performance in the reading test was barely responsive to reflections on the screens. Two models have been developed, one to predict the luminaire luminance at which 95% of observers were not disturbed by the reflections and the other to predict the rating of disturbance caused by reflections from the screens. Both models are based on lighting-display parameters including the size and luminance of the reflected light source and the specular reflectance, the effect of haze reflection and the background luminance of the display screen. These models can be used generally, to guide lighting recommendations and, specifically, to identify suitable luminaires to be used with given set of display screens or suitable display screens to be used with a given lighting installation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2012 Sage. This is an author produced version of a paper subsequently published in Lighting Research and Technology. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > School of Architecture (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 Dec 2013 10:12 |
Last Modified: | 02 Dec 2013 10:12 |
Published Version: | http://dx.doi.org/10.1177/1477153511413354 |
Status: | Published |
Publisher: | Sage |
Identification Number: | 10.1177/1477153511413354 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:76643 |