Door with integrated spy hole has light source to adjust brightness in opening on door panel remote from observer

摘要

The door panel (2) facing the observer has a device (30) for adjusting the brightness in the opening (5) on the door panel (4) remote from the observer. A light source (22) is provided in the housing (9) which can be connected to the door panel closest to the observer whilst a screen (19,20) is provided between the light source and door panel to influence the brightness of the light entering into the opening. An electrically operated motorised disc can be included as a screen