A display system having a viewing window on a viewing plane, wherein the display system comprises: a picture generating unit arranged to display a picture on a display plane, wherein the picture is a holographic reconstruction formed from a hologram of the picture; and an imaging system arranged to form an image of the picture that is viewable from the viewing window, wherein the imaging system comprises: a projection lens disposed between the display plane and viewing plane, wherein the projection lens is a simple lens arranged to magnify the picture and to form an image of the picture on an image plane; an aperture stop arranged to restrict the aperture of the projection lens in a first direction and form the limiting aperture stop of the imaging system; and a first waveguide pupil expander arranged to receive light of the picture from the projection lens through the aperture stop and replicate the aperture stop in order to expand the viewing window of the display system in the first direction; wherein the projection lens is cropped in the first direction such that the projection lens comprises a pair of parallel straight sides that are perpendicular to the first direction, and wherein the aperture stop is defined by the cropped projection lens. a picture generating unit arranged to display a picture on a display plane, wherein the picture is a holographic reconstruction formed from a hologram of the picture; and an imaging system arranged to form an image of the picture that is viewable from the viewing window, wherein the imaging system comprises: a projection lens disposed between the display plane and viewing plane, wherein the projection lens is a simple lens arranged to magnify the picture and to form an image of the picture on an image plane; an aperture stop arranged to restrict the aperture of the projection lens in a first direction and form the limiting aperture stop of the imaging system; and a first waveguide pupil expander arranged to receive light of the picture from the projection lens through the aperture stop and replicate the aperture stop in order to expand the viewing window of the display system in the first direction; wherein the projection lens is cropped in the first direction such that the projection lens comprises a pair of parallel straight sides that are perpendicular to the first direction, and wherein the aperture stop is defined by the cropped projection lens. a projection lens disposed between the display plane and viewing plane, wherein the projection lens is a simple lens arranged to magnify the picture and to form an image of the picture on an image plane; an aperture stop arranged to restrict the aperture of the projection lens in a first direction and form the limiting aperture stop of the imaging system; and a first waveguide pupil expander arranged to receive light of the picture from the projection lens through the aperture stop and replicate the aperture stop in order to expand the viewing window of the display system in the first direction; wherein the projection lens is cropped in the first direction such that the projection lens comprises a pair of parallel straight sides that are perpendicular to the first direction, and wherein the aperture stop is defined by the cropped projection lens.