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Swept-volume display
 
 
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A swept-volume display is a volumetric display
Volumetric display

A volumetric display device is a graphical display device that forms a visual representation of an object in Three-dimensional space, as opposed to the planar image of traditional screens that simulate depth through a number of different visual effects....
 in which the three-dimensional
Dimension

In mathematics, the dimension of a space is roughly defined as the minimum number of coordinates needed to specify every point within it. For example: a point on the unit circle in the plane can be specified by two Cartesian coordinates but one can make do with a single coordinate , so the circle is 1-dimensional even though it exists in...
 image
Image

An image is an artifact, usually two-dimensional , that has a similar appearance to some subject —usually a physical object or a person....
 is formed by illuminating a rapidly moving display surface, which may be "macroscopically" physical (e.g., a spinning diffuser) or otherwise (e.g. exciting a surface of doped ions into a metastable state prior to radiative activation by a second beam). Typical schemes use a circular screen rotating at about 900 rpm, which sweeps a spherical volume at each half-rotation, hence the technology's name.






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A swept-volume display is a volumetric display
Volumetric display

A volumetric display device is a graphical display device that forms a visual representation of an object in Three-dimensional space, as opposed to the planar image of traditional screens that simulate depth through a number of different visual effects....
 in which the three-dimensional
Dimension

In mathematics, the dimension of a space is roughly defined as the minimum number of coordinates needed to specify every point within it. For example: a point on the unit circle in the plane can be specified by two Cartesian coordinates but one can make do with a single coordinate , so the circle is 1-dimensional even though it exists in...
 image
Image

An image is an artifact, usually two-dimensional , that has a similar appearance to some subject —usually a physical object or a person....
 is formed by illuminating a rapidly moving display surface, which may be "macroscopically" physical (e.g., a spinning diffuser) or otherwise (e.g. exciting a surface of doped ions into a metastable state prior to radiative activation by a second beam). Typical schemes use a circular screen rotating at about 900 rpm, which sweeps a spherical volume at each half-rotation, hence the technology's name. Three-dimensional imagery is perceived due to persistence of vision, in that a collection of voxels is projected at different locations within the volume over a time period such as 1/30 sec; they are visually integrated into one reconstructed 3-D scene.