raster
Raster may refer to:
* Raster graphics, graphical techniques using arrays of pixel values
* Raster graphics editor, a computer program
* Raster scan, the pattern of image readout, transmission, storage, and reconstruction in television and compute ...
display technology developed by a Russian company of the same name. The Displair projects images onto sheets of water droplets suspended in air, giving the illusion of a
hologram
Holography is a technique that enables a wavefront to be recorded and later re-constructed. Holography is best known as a method of generating real three-dimensional images, but it also has a wide range of other Holography#Applications, applic ...
. Unlike other cold fog projecting technologies, the images projected by the Displair can also respond rapidly to multi-touch manipulation, as well as allowing taste and aroma to be incorporated.
History
Developer Maxim Kamanin introduced the Displair at Seliger 2010. In July of that year he chose the "Displair" name for both the product and the company as a
portmanteau
A portmanteau word, or portmanteau (, ) is a blend of wordsscreenless" display consisting of cold stable air flow containing particles of water produced by a
cavitation
Cavitation is a phenomenon in which the static pressure of a liquid reduces to below the liquid's vapour pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, cal ...
method. These particles are small enough not to leave traces of moisture, and their surface tension high enough to maintain stability after contact with physical objects and wind.
Displair uses third party computerised multi-touch technologies to allow control of images with fingers or with other objects. The display can work with up to 1500 touch points simultaneously with a delay time of less than 0.2 seconds. This makes it possible to allow manipulation by more than one user, and also to identify more complex gestures than similar 3D display systems. The company is working on incorporating flavoring and taste interaction with projected images in the future.
See also
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Fog display
A fog display, fog screen, vapor screen or vapor display is a system that uses haze machines or water vapor to create a semi-transparent wall, or "curtain" of suspended particles which trapped in a thin sheet ( laminar flow) of air and are illumi ...
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Screenless video
Screenless video is any system for transmitting visual information from a video source without the use of a screen. Screenless computing systems can be divided into three groups: Visual Image, Retinal Direct, and Synaptic Interface. Visual image ...
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Virtual retinal display
A virtual retinal display (VRD), also known as a retinal scan display (RSD) or retinal projector (RP), is a display technology that draws a raster display (like a television) directly onto the retina of the eye.
History
In the past similar s ...