A Procedure for Qualitative Study of Light Level Variations and System Performance
- 1 October 1978
- journal article
- research article
- Published by Taylor & Francis in Journal of the Illuminating Engineering Society
- Vol. 8 (1) , 28-35
- https://doi.org/10.1080/00994480.1978.10748564
Abstract
The use of visibility levels (VL) as a method of design and evaluation of room lighting systems in work spaces is analyzed. The procedure used here is a modification of the Lumen 2 computer program. Several alternative power-budgeted lighting designs are evaluated to demonstrate the process. This analysis includes: calculation of classical footcandles, calculation of ESI footcandles, a plotting of VL for typical younger workers, and a similar plotting for typical older workers. Possible modifying factors related to subjective impressions of visual clarity are also discussed.Keywords
This publication has 4 references indexed in Scilit:
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- A Survey and Analysis of Important Visual Tasks in OfficesJournal of the Illuminating Engineering Society, 1975
- On the Computation of Equivalent Sphere IlluminationJournal of the Illuminating Engineering Society, 1975
- IERI. Application Procedures for Evaluation of Veiling Reflections in Terms of ESI: IV. Final Validation of Measurement and Predetermination Methods for Luminaire InstallationsJournal of the Illuminating Engineering Society, 1973