A true three-dimensional display

A new three-dimensional (3D) display concept is described that employs a random accessed flying spot in a transparent volume of material viewable from any position outside the volume. Arbitrary, true 3D figures may be presented ranging from line to full surface drawings and including alphanumerics. The display has a multicolor capability, continuously variable intensity, and can exhibit fixed or moving objects with good resolution. Display volumes of several cubic feet with high information capacity seem feasible.