An apparatus for projecting time-multiplexed stereoscopic images received in image light from a motion picture projector, comprising: a polarizing splitting element (303, 602) configured to receive image light that includes the time-multiplexed stereoscopic images and to split the image light received into primary path image light directed along a primary path and secondary path image light directed along a secondary path, wherein the primary path image light has a first polarization, the secondary path image light has a second polarization, and the first polarization is orthogonal to the second polarization; a reflective element (308, 603) configured to reflect one of the primary path image light and the secondary path image light and direct the reflected image light toward a surface (309, 608), the reflective element being operable to adjust the beam angles of the reflected image light so that the primary path image light and the secondary path image light are aligned at the surface; a polarization modulator positioned in both the primary and secondary paths and configured to receive the primary path image light and secondary path image light, modulate the primary path image light and secondary path image light into primary path circularly-polarized image light and secondary path circularly-polarized image light, respectively, and transmit the primary path circularly-polarized image light and the secondary path circularly-polarized image light toward the surface, wherein the primary path circularly-polarized image light and the secondary path circularly-polarized image light have substantially the same polarization state when arriving at the surface, and wherein the modulation is performed synchronously with the time-multiplexed stereoscopic images such that each of the primary path circularly-polarized image light and the secondary path circularly-polarized image light are synchronised with the time-multiplexed stereoscopic images from the motion picture projector. a polarizing splitting element (303, 602) configured to receive image light that includes the time-multiplexed stereoscopic images and to split the image light received into primary path image light directed along a primary path and secondary path image light directed along a secondary path, wherein the primary path image light has a first polarization, the secondary path image light has a second polarization, and the first polarization is orthogonal to the second polarization; a reflective element (308, 603) configured to reflect one of the primary path image light and the secondary path image light and direct the reflected image light toward a surface (309, 608), the reflective element being operable to adjust the beam angles of the reflected image light so that the primary path image light and the secondary path image light are aligned at the surface; a polarization modulator positioned in both the primary and secondary paths and configured to receive the primary path image light and secondary path image light, modulate the primary path image light and secondary path image light into primary path circularly-polarized image light and secondary path circularly-polarized image light, respectively, and transmit the primary path circularly-polarized image light and the secondary path circularly-polarized image light toward the surface, wherein the primary path circularly-polarized image light and the secondary path circularly-polarized image light have substantially the same polarization state when arriving at the surface, and wherein the modulation is performed synchronously with the time-multiplexed stereoscopic images such that each of the primary path circularly-polarized image light and the secondary path circularly-polarized image light are synchronised with the time-multiplexed stereoscopic images from the motion picture projector.