| Title |
A Study on the Comparison of Discomfort Glare Evaluation Systems |
| Keywords |
VCP ; UGR ; Discomfort Glare ; Lighting System ; |
| Abstract |
The purpose of this study was to introduce two different discomfort glare evaluation systems for interior lighting systems from CIE and IESNA, and to analyze the correlations of the simulation results from such systems. For this research, a computer software program was developed to simulate UGR and VCP glare evaluation systems, and results provided by these glare evaluation systems were compared across a variety of interior lighting conditions using both parabolic and lens luminaires. The simulated VCP values were first verified with those in commercial luminaire catalogues and then, the similarities and differences in the derivations of UGR and VCP glare evaluation systems were outlined. In addition, the relative impact of differences in the formulas was reported from detailed simulation results. |