Patent ID: 8299980

Claim:
An image display device comprising: a floating image display means comprising: a display unit having an image screen for displaying a two-dimensional image; and an image transfer panel located far from the image screen, the floating image display means being configured to focus light left from the image screen on an image plane in a space to thereby display a floating image, the space being located on one side of the image transfer panel opposite to the other side thereof facing the display unit; and a floating image recognizing means formed of a plate-like light-transmissive member that is light transmissive, the plate-like light-transmissive member having a size that allows all light left from the image screen and focused on the image plane to be passed therethrough, wherein the plate-like light-transmissive member is placed to cross the image plane such that the image plane is divided into a first region and a second region, the plate-like light-transmissive member having a surface that faces the first and second regions, the plate-like light-transmissive member comprising an engraved portion formed on first and second parts of the surface, each of the first and second parts of the surface facing a corresponding one of the first and second regions, the engraved portion formed on each of the first and second parts of the surface serving as a reference portion with respect to the floating image of a corresponding one of the first and second regions of the image plane.