Multi-depth display apparatus

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,
• projection optics for rendering a display image on the display screen, wherein the display image is a virtual image corresponding to the source image, the projection optics having an optical axis, and
• wherein the image realisation device comprises:
• a first image realisation surface, wherein the image realisation surface is an extended surface, wherein at least a portion of the image realisation surface is tilted relative to the optical axis such that a mid-point in a first region of the image realisation surface is at a first distance along the optical axis from the focal point of the projection optics and a mid-point in a second region of the image realisation surface is at a second different distance along the optical axis from the focal point of the projection optics, and
• a first source image formed on the first region and projected through the projection optics will render the first display image on the display screen at a first apparent depth and a second source image formed on the second region and projected through the projection optics will render the second display image on the display screen at a second apparent depth;
• and
• wherein the image realisation surface is controllably deformable.