Using digital cameras as quasi-spectral radiometers to study complex fenestration systems
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Andersen-2009-Using Digital.pdf
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508.04 KB
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Author(s)
Gayeski, Nicholas
Stokes, E.
Andersen, Marilyne
Date Issued
March 2009
Journal
Lighting Research & Technology
Publisher
Sage Publications, inc.
Citation
Gayeski, N., E. Stokes, and M. Andersen. “Using digital cameras as quasi-spectral radiometers to study complex fenestration systems.” Lighting Research and Technology 41 (2009): 7-25. Web. 2 Nov. 2011. © 2011 Sage Publications, inc.
Version
Final published version
Abstract
This work discusses the use of digital cameras fitted with absorption filters as quasi-spectral radiometers. By filtering incident light into selected wavelength intervals, accurate estimates of radiances can be made for unknown spectra. This approach is being employed as part of a new video-projection goniophotometer to study the properties of angularly and spectrally selective complex fenestration systems. Complex fenestration systems are increasingly being used to distribute solar radiation purposefully in buildings. They can be utilized to optimize energy performance and enhance daylighting. Radiance estimates from calibrated digital cameras enable the assessment of quasi-spectral, bi-directional scattering distribution functions of total radiance transmitted or reflected by a fenestration system over desired wavelength intervals. A silicon and an indium gallium arsenide digital camera are used to enable measurements across a 380 to 1700 nm wavelength interval.
MIT Department
Massachusetts Institute of Technology. Building Technology Group
Massachusetts Institute of Technology. Department of Architecture
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1177/1477153508094651
