Priva-Lite blackout glass in the Saint-Gobain Tower

Par Bat info source: Saint Gobain Glass Building via YouTube

Discovery of the PRIVA-LITE controlled blackout glass, installed in the offices of the Management of the Saint-Gobain Tower. PRIVA-LITE is an active lens which, under the effect of an electric current, changes from the translucent state (OFF position) to the transparent state (ON position) instantaneously, without significant alteration of light transmission.