Multi-depth display system

An imaging system for generating multi-depth virtual images on a display screen, the imaging system comprising:

• an image realisation device for forming a source image;
• and
• projection optics for rendering a display image on the display screen, wherein the display image is a virtual image corresponding to the source image,
• wherein the image realisation device comprises:
• an image realisation surface and a light structuring device having a surface with a first and second region, wherein the light structuring device is configured to simulate a first lens having a first focal length on the first region of the surface, wherein the surface and the image realisation surface are arranged such that a first source image formed on a first region of the image realisation surface and projected through the projection optics will render a first display image on the display screen at a first apparent depth,
• wherein the light structuring device is further configured to simulate a second, different lens on the second region of the surface, said second lens having a second focal length, and wherein the surface and image realisation surface are arranged such that a second source image formed on a second region of the image realisation surface and projected through the projection optics will render a second display image on the display screen at a second apparent depth, and
• wherein the light structuring device is further configured to simulate the first and second lens on the surface of the light structuring device at different regions on the surface and to display the first and second lenses at the same time to allow multi-depth images to be displayed at the same time.