THE VERTICAL-TO-HORIZONTAL ILLUMINANCE RATIO - A NEW INDICATOR OF DAYLIGHTING PERFORMANCE

Authors
LOVE JA NAVVAB M
Citation
Ja. Love et M. Navvab, THE VERTICAL-TO-HORIZONTAL ILLUMINANCE RATIO - A NEW INDICATOR OF DAYLIGHTING PERFORMANCE, Journal of the Illuminating Engineering Society, 23(2), 1994, pp. 50-59
Citations number
NO
Categorie Soggetti
Optics
Journal title
Journal of the Illuminating Engineering Society → ACNP
ISSN journal
00994480
Volume
23
Issue
2
Year of publication
1994
Pages
50 - 59
Database
ISI
SICI code
0099-4480(1994)23:2<50:TVIR-A>2.0.ZU;2-B
Abstract
It is shown that useful information, such as indications of glare and contrast conditions, can be obtained through the ratio of vertical to horizontal illuminance at a point in space. The utility of the measure under clear, partly cloudy, and overcast skies is demonstrated throug h the use of measured results. This measure can also be used to assess combined electric and daylighting systems.