A system comprising: an image generator configured to provide a stream of stereoscopic images comprising left eye images and right eye images; a projector configured to receive the stream of stereoscopic images from the image generator and form light into the stereoscopic images; a viewing apparatus configured to filter the light into the left eye images and the right eye images respectively thereby providing a three dimensional rendering of the stereoscopic images when viewed through the viewing apparatus; a collimation apparatus comprising a convex screen and a concave collimating mirror, the collimation apparatus configured to receive and collimate the light from the projector, such that (i) rays of light forming the stereoscopic images are substantially parallel when the stereoscopic images are received at the viewing apparatus, (ii) an object in the stereoscopic images is nominally located at optical infinity such that vergence cues are generally in agreement with an actual location of the corresponding left eye image and right eye image at the convex screen, and (iii) the object in the stereoscopic images is nominally located at optical infinity such that accommodation cues are generally in agreement with the actual location of the corresponding left and right eye images at the convex screen, the convex screen comprising a reflective projection screen, the projector further configured to front project the stereoscopic images upon the convex screen; the concave collimating mirror configured to reflect the stereoscopic images from the convex screen such that the reflected light is collimated, wherein the concave collimating mirror is one of spherical and parabolic, the convex screen having a shape complimentary to the concave collimating mirror; a head tracking apparatus configured to acquire a position of the viewing apparatus; and a processor configured to adjust the stereoscopic images for viewing based on the position of the viewing apparatus, wherein the head tracking apparatus is configured to be turned on for a single viewer and turned off for multiple viewers. an image generator configured to provide a stream of stereoscopic images comprising left eye images and right eye images; a projector configured to receive the stream of stereoscopic images from the image generator and form light into the stereoscopic images; a viewing apparatus configured to filter the light into the left eye images and the right eye images respectively thereby providing a three dimensional rendering of the stereoscopic images when viewed through the viewing apparatus; a collimation apparatus comprising a convex screen and a concave collimating mirror, the collimation apparatus configured to receive and collimate the light from the projector, such that (i) rays of light forming the stereoscopic images are substantially parallel when the stereoscopic images are received at the viewing apparatus, (ii) an object in the stereoscopic images is nominally located at optical infinity such that vergence cues are generally in agreement with an actual location of the corresponding left eye image and right eye image at the convex screen, and (iii) the object in the stereoscopic images is nominally located at optical infinity such that accommodation cues are generally in agreement with the actual location of the corresponding left and right eye images at the convex screen, (i) rays of light forming the stereoscopic images are substantially parallel when the stereoscopic images are received at the viewing apparatus, (ii) an object in the stereoscopic images is nominally located at optical infinity such that vergence cues are generally in agreement with an actual location of the corresponding left eye image and right eye image at the convex screen, and (iii) the object in the stereoscopic images is nominally located at optical infinity such that accommodation cues are generally in agreement with the actual location of the corresponding left and right eye images at the convex screen, the convex screen comprising a reflective projection screen, the projector further configured to front project the stereoscopic images upon the convex screen; the concave collimating mirror configured to reflect the stereoscopic images from the convex screen such that the reflected light is collimated, wherein the concave collimating mirror is one of spherical and parabolic, the convex screen having a shape complimentary to the concave collimating mirror; a head tracking apparatus configured to acquire a position of the viewing apparatus; and a processor configured to adjust the stereoscopic images for viewing based on the position of the viewing apparatus, wherein the head tracking apparatus is configured to be turned on for a single viewer and turned off for multiple viewers.