In the mists of a global economic crisis, technology continues to evolve, and here we are projecting images through a wall of water.
The technology that uses water to create a thin, suspended layer of dry fog that enables projection of images that appear to float is gaining rapid acceptance in the live-productions industry because it offers an interesting alternative to high-resolution projection and display to staging designers and event organizers.
Using a laser, a video projector, or lighting fixtures with gobos as a projection source, makes images appear to float in front of the audience. The water screens are creating a thin film of water ideal for rear projection of video, lasers, gobos, and other lighting effects.
The system utilizes a combined water collection trough and nozzle system to create the water screen that can display high-resolution projected imagery. Water is recycled via pumps from the ground-level channel to an extruded aluminum box section “nozzle,” through which the water drops under little or no pressure from a series of small holes in the nozzle’s bottom surface.
Basically this technology is reconstituting a virtual image using an array of hundreds of thousands of tiny point sources. This unique projection surface also gives the illusion that the image is floating in mid-air. It’s actually a very high-resolution playback system. There are 1,700 jets per every 10ft. section of screen. To scale, then, there are actually more ‘pixels’ than in any high-resolution monitor.
Thanks to the unique visual experience of glimmering, rushing cascades, along with the rippling sounds of falling water, water walls can be used onstage, mid-room, or on a back wall as projection screens, or in a trade show booth. This way you can easily have a waterfall dumping 200 to 300 gallons per minute from the ceiling.
One live-event application of the water screens is at corporate functions where executives wish to make a dramatic entrance. For example, lets create a 30-ft. water curtain, by linking three 10-ft. nozzle sections together, each with its own pump supplying water. When operating together, the water appears to fall as a single uniform water curtain. One nozzle, however (the center one, for example), can be shut off independently, revealing a product or person behind, while the water continues to fall on either side of him.
But, doesn’t technology cost? So are the water screens, a seven-foot section with a screen, ejector, tank, hose, water pumps, and filtration system can add up to nearly $20,000 or more. Nonetheless, water screens are becoming increasingly popular at corporate meetings, church services, and orchestra performances.