Fig. 14 Our design concept to enable mutual gaze is an adaptation of a patent from 1947 (Rosenthal 1947). The video projector in the background is used for back-projection onto a screen of matted acrylic glass.
In this case the back-projection displays my colleague Leif Handberg who looks straight at me, namely at eyelevel. I am standing in the doorway, facing Leif. The glazed door (here, a standard 5 mm sheet of glass, as part of a 1950s door) opened at 45° provides sufficient reflection for the video camera. The camera which captures me is hidden to the right, out of view. It is the fact that this camera captures me as I am reflected from the glass at 45° which enables both parties to experience mutual gaze, without cameras interfering in the projections.
