1. An apparatus for displaying a three-dimensional image to an observer, comprising: a first display element being arranged at a distance from the observer; a second display element being arranged in the field of view between the observer and the first display element in the immediate vicinity of the observer and being carried by the observer to follow movements of the observer; means for providing synchronization between the first and second display element; means for generating a primary image with three-dimensional image information; and means for processing said three-dimensional image information on a three-dimensional picture element basis to divide said image information within each said picture element between said first and said second display element, the processed image information being utilized partly by said first display element for displaying a first subset of image information included in the three-dimensional image and partly by said second display element for displaying a second subset of image information included in the three-dimensional image during a characteristic integration time for the observer, whereby the observer with each single eye perceives a three-dimensional image on observing the combined information of the two synchronized display elements in his field of view.