Patent ID: 8328361

Claim:
An image display apparatus, comprising: an image source, a frame, a light source and an at least partially transparent screen; the frame being arranged to retain the screen under tension, such that the tension of the screen can be independently varied at a plurality of positions along at least one edge of said screen; the light source arranged to illuminate at least part of the apparatus; the screen inclined at an angle with respect to a plane of emission of light from the image source and the screen having a front surface arranged such that light emitted from the image source is reflected therefrom; and the image source being arranged such that light forming the image impinges upon the screen such that a virtual image is created from light reflected from the screen, the virtual image appearing to be located behind the screen, wherein the screen is polymeric foil and the frame comprises first and second retention members having opposing faces arranged in parallel to sandwich an edge region of the screen therebetween, and at least one of the faces of the first and second retention members comprises an abrasive coating arranged to contact the screen, and wherein the first and second retention members are connected to one or more flexible tensioning means, which extend from the frame, the flexible tensioning means comprising tensioning straps and corresponding friction locking buckle arrangements for tightening the tensioning straps; the foil, flexible tensioning means and the frame lying in a common inclined plane, with the faces of the first and second retention members being oriented parallel to the common inclined plane and the tension on the foil being applied in the common inclined plane.