Patent ID: 7959294

Claim:
An apparatus for displaying 3D images, the apparatus comprising: a screen with diffusion characteristics for direction selectively forwarding light; a screen illuminating system, the screen illuminating system comprising multiple modules for generating multiple light beams incident on points of the screen, the modules being arranged so that each point of the screen is illuminated by multiple modules, and the incident light beams generated by one module are projected into multiple different directions from the module towards multiple different points of the screen, and further the different incident light beams generated by one module are forwarded towards different emitting directions from the screen, and means for coding each incident light beam with the image information of a single image point in the module, where the 3D image perceived by an observer being generated by multiple modules; a control system to control the modules; and means for imparting an exit divergence to the exiting light beams being transmitted through or reflected from the screen, the measure of the exit divergence substantially corresponding to the angle between neighboring emitting directions associated with the optically neighboring modules, so as to provide a substantially continuous motion parallax in the 3D image perceived by an observer; wherein the modules of the screen illuminating system comprise imaging means for generating each of the incident light beams with a convergent section for focusing each incident light beam on a point of the screen, where a convergence of the incident light beams is not greater than the exit divergence of the light beams exiting the screen.