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Spatial Brightness, Horizontal Illuminance and Mean Room Surface Exitance in a Lighting Booth
Duff, James; Kelly, Kevin; Cuttle, C.
This paper presents a pilot study that has investigated the suitability of mean room surface exitance as a predictor of spatial brightness and compared these results with how horizontal illuminance predicts spatial brightness under the same conditions. The experiment took a group of 26 participants and, using a scaled booth, exposed each participant to three levels of mean room surface exitance, each delivered with three different light distributions and three different surface reflectances, resulting in a total of 27 light scenes. Results demonstrated that, under the range of conditions to which participants were exposed, a systematic relationship existed between mean room surface exitance and spatial brightness, but not between horizontal illuminance and spatial brightness.
Keyword(s): Spatial brightness; horizontal illuminance; MRSE; Electrical and Electronics; Engineering
Publication Date:
Type: Journal article
Peer-Reviewed: Unknown
Institution: Dublin Institute of Technology
Citation(s): Articles
Publisher(s): Dublin Institute of Technology
File Format(s): application/pdf
First Indexed: 2017-07-06 05:54:57 Last Updated: 2017-12-14 06:58:46