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Patents: Screen of Mist
BARRY FOX
THERE may not be many beautifully simple ideas left to invent, but the
Taisei Corporation of Tokyo has hit on one of them. It has filed a British
patent application (2 220 278) on a technique for producing at the flick
of a switch a very large projection screen - made of water.
The screen is a mist of water, produced by a row of very fine nozzles
pumping water up into the air at high pressure.
When a cinema or video projector is focused on the mist, it reflects
enough light to create a visible image, hanging mysteriously in the air.
The inventors suggest that the ideal place to use the system is on a barge
floating on a lake, a river or the sea and drawing water up from below.
Theatres could exploit the invention to produce a temporary screen on
the stage, removing it at the flick of a switch.
The inventors claim that screens several tens of metres high can be
produced by powerful pumps.
