GHOST IMAGE FREE PROJECTION AT ARBITRARY DISTANCE

An image generation system for providing a ghost image free head-up display, the system comprising a display screen having a front surface and a back surface, a picture generation unit for projecting an image towards the display screen for reflection towards an eye box, a field lens, and an anisotropic optical component having a first optical power along a first axis and second optical power along a second axis, wherein the first and second axis are perpendicular, wherein the picture generation unit is configured to project light through the field lens such that light is incident on the front surface of the display screen forming a first virtual image, wherein a portion of the light is transmitted through the display screen and is incident on the back surface of the display screen forming a second virtual image, wherein the first and second virtual images are offset along the first axis, wherein the field lens is configured to project the first virtual image at a first projection distance and the second virtual image at a second projection distance such that the offset is below a threshold magnitude and the first and second virtual images are substantially overlaid as viewed from the eye box, and wherein the anisotropic optical component is configured to magnify the first and second virtual image along the second axis only.