| 摘要 |
PURPOSE:To provide a 3-dimensional display device in which an area able to display a 3-dimensional image is large and the 3-dimensional image is observed from an optional angle. CONSTITUTION:A flat plate disk 2 is provided to be driven vertically in the inside of a transparent outer cylinder 1. The flat disk 2 is driven vertically by an air pump 4 connecting to an upper end and a lower end of the outer cylinder 1 through a pipe 20. Furthermore, the display device is provided with a position detection section 5 detecting the position of the flat disk in the vertical direction and outputting a position signal, a control section 6 calculating the radiation angle of a laser beam based on the position signal and outputting a control signal and a laser beam generation scanner 7 deciding the radiation angle of the laser beam based on the control signal and emitting the laser beam or the like. |
