Application of Videophotometer in the evaluation of DGI in scholastic environment

This work deals with visual comfort for interior scholastic environment and videographic technique applied in the verify procedures reported in the Italian Standard Code UNI 10840 (March 2000). Several aspects of glare due to daylighting and concerning all parameters used to define the DGI (Daylight Glare Index) have been examined. Each parameter, both geometric and photometric, was acquired with the videophotometer, which setup has been carried out previously. In this way, DGI calculation is very easy and fast and allows to formulate various considerations about the glare source classification in daylighted indoor environment. Finally, the advantages obtained using the videophotometer and how this kind of instrument will support in the future verification procedures and lighting design in buildings are pointed out.