Most of the 3D displays reported until now draw pseudo-3D images on 2D planes by utilizing the human binocular disparity. However, many problems occur, e.g., the limitation of the visual field, and the physiological displeasure due to the misidentification of virtual images.

We have developed a 3D display, which utilizes the plasma emission phenomenon near a focal point of focused laser light. By controlling positions of the focal points in three directions of X-, Y-, and Z-axes, real 3D-images constructed by dot arrays were displayed in the air (3D-space).