| Title |
Effect of the Position of a Glare Source on Glare Constant |
| Authors |
Kim. Won-Woo ; Shin. In-Joong |
| Keywords |
glare ; discomfort glare ; glare constant ; luminance |
| Abstract |
The objective of this study work is to elucidate the effect of the position of a glare source in the visual field on Glare Constant. The existing Glare Constant formulas have issues that those are determined for the glare source located on the line of sight, and the exponents in the formulas are fixed values through the entire visual field. It is necessary to confirm that the exponents have suitable values at the positions elsewhere on the line of sight. Luminance that caused a standard sense of glare was measured on the self-made glare meter. The results show that the exponents are variable according to the source position, source size, and background luminance. The new Glare Constant formula is proposed considering the variation of the exponents. The formula has the practical advantage in which the Glare Constant can be obtained without Position Index. |