The Bluephase G4 curing light is an intelligent photopolymerization lamp. The Bluephase G4 photopolymerization lamp automatically detects the movement of the handpiece during the photopolymerization procedure. It alerts the user of an incorrect operation through a vibration and automatically extends the exposure time by 10% if necessary. If the movement prevents the material from polymerizing correctly, the lamp will automatically interrupt the exposure cycle so that it can be repeated. The Bluephase G4 lamp is equipped with active glare protection to prevent the light from activating in open spaces.