Display system with semi-transparent screen shared by two observers

A display system intended to be used simultaneously by at least two observers, said system comprising means for generating predetermined images of objects and a display device having a semi-transparent projection screen on which the images of said predetermined objects form, wherein:

• the image generating means comprise features arranged to generate a first image of a first object and a second image of a second object;
• the display system comprises two pairs of glasses worn by the first and second observer, arranged such that the first observer perceives only the first image and not the second image and such that the second observer perceives only the second image and not the first image, each pair of glasses letting outside light pass through;
• the display system comprises means for detecting the relative position of each pair of glasses with respect to the position of the semi-transparent screen, and means for calculating the first image and the second image such that the first observer located at a first distance from the semi-transparent screen sees a first image of the object corresponding to a first predetermined position and such that the second observer located at a second distance from the semi-transparent screen sees the second image corresponding to a second predetermined position.