An image display device includes at least one transmissive display panel
arranged at different depth positions in a direction normal to a display
surface of the image display device. Each of the transmissive display
panels includes a light-emitting layer that is sandwiched between a front
side transmissive film and a rear side transmissive film. The rear side
transmissive film has an interface with a maximum refractive index
difference that causes an efficiency of light emitted from the
light-emitting layer to become smaller than a front side light emission
efficiency in the characteristics of light-emission efficiency, which
changes with respect to a film thickness of the transmissive film due to
optical interference.