<p>THE INVENTION RELATES TO A SYSTEM FOR VIEWING STEREOSCOPIC AND PANORAMIC IMAGES, COMPRISING A DISPLAY SCREEN AND A MEANS FOR THE SEQUENTIAL MASKING OF THE DISPLAY SCREEN IN ORDER TO ENABLE THE SCREEN TO BE VIEWED SELECTIVELY BY AN OBSERVER USING ONLY ONE EYE. THE INVENTION IS CHARACTERISED IN THAT THE MASKING MEANS CONSISTS OF A TRANSPARENT SUPPORT COMPRISING AT LEAST ONE DIFFRACTION GRATING WHICH FORMS A VIRTUAL IMAGE OF AN OPAQUE MASK HAVING A TRANSPARENT WINDOW WHICH IS PERPENDICULAR TO THE OBSERVATION AXIS AND WHICH IS POSITIONED IN A PLANE PARALLEL TO THE DISPLAY SCREEN.THE WIDTH OF THE WINDOW AND THE POSITION OF THE PLANE IN WHICH IT IS FORMED ARE DETERMINED SUCH AS TO ENABLE THE ENTIRE WIDTH OF THE DISPLAY SCREEN TO BE SEEN USING ONLY ONE EYE. THE INVENTIVE SYSTEM ALSO COMPRISES CONTROL MEANS FOR CHANGING THE POSITION OF THE VIRTUAL IMAGE OF THE WINDOW IN THE PLANE SYNCHRONOUSLY WITH THE CHANGE IN THE DISPLAYED IMAGE.</p>
