FogScreen is the world's only walk-through projection screen. It uses just tap water and air to generate a thin slice of ultrasonic mist onto which any image or video can be created with a standard projector. FogScreen's patented technology creates a mist so fine it's electro-statically charged and will repel away from the people who walk through it, finally dissipating into the air. The screen generator hangs above the ground and emits the effect downwards using laminar air flow and gravity. There are no side or floor components required.

Technical Specifications

Projection

FogScreen is a rear-projection screen. The particles of water are not very reflective (only about 5% to 10% bounce back), but they transmit light forward very well - creating the illusion of a floating image. There are no particular brands of projector that work best on FogScreen, but the lumen rating must be suitable for the lighting environment.

Optimal Settings

FogScreen has 3 settings which can be adjusted to change the performance of the screen in different conditions:

• Air Flow: This setting controls the speed of the fans that create the protective air curtains around the fog. If it is windy, this setting can be increased, but the trade off will be less laminarity, and a more turbulent image. The normal setting for this should be between 12 o'clock and 2 o'clock on the dial.
• Fog Flow: This setting controls the speed of the fans that blow into the water tank and force the fog out of the generator. This can also help the screen resist windy conditions, although the trade off is more condensation dripping from the generator. A 12 o'clock setting is best for this dial. Anything above 12 o'clock will increase dripping.
• Fog Density: This setting controls the power to the transducers. Increasing this dial will significantly increase the amount of fog produced. For some clients this may be desirable as an effect.

Optimal Installation

FogScreen works in many types of installation settings. From low to high ambient light in tradeshow booths, gala events, museums, dark rides, nightclubs and much more. However, FogScreen effect is best viewed in controlled environmental conditions. It is not recommended for outdoor installations. The ideal installation conditions are as follows:

Low ambient light: The screen looks richer and more opaque in low-light conditions. In brighter conditions the screen still performs well, but it will be more transparent, and will require a more powerful projector to compensate. Also it is recommended that design incorporate side, top and rear sheltering/dressing to maximize screen performance.

Still air: FogScreen is built to resist standard atmospheric disturbance. For instance, people walking through make almost no interruption in the screen - even large crowds. FogScreen mist is sandwiched between two laminar air curtains that resist wind pressure in most indoor conditions. Settings can be adjusted to enhance the strength of this field if needed. However strong constant winds will disrupt the performance of the screen by creating bowling or arcing, or in the worst case dissipating the screen entirely. Caution should be taken to ensure the screen is not subjected to air currents created by A/C systems, proximity to outdoor exits, or large pressure differentials in entranceways.

Content Creation

It must be remembered that FogScreen is first and foremost an effect screen - not a high-resolution display. It is detailed enough to easily watch a movie on when set up properly. The video quality images it produced are impressive considering it is simply floating on air currents, however contents should be considered carefully to maximize results:

• High contrast
• Bright colors
• Large objects
• Text larger than 6"

Finally, as described earlier, the resolution quality is best at the top of the screen, and degrades as the screen falls. As such, any high detail graphics, particularly small text should be oriented towards the top of the screen.