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By Della on Apr 23, 2010 |News & Society
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4D movie is new video products that is added environmental effects simulation based on 3D stereoscopic films. It is also called four dimensional film, changing three-dimensional simulation and surrounding environment for four-dimensional space.

Basic overview
The audience accompanied by changes of movies content can feel the storm, lighting, rain, impact spray mist and other things that are corresponded with scenes in movies, because the seats in 4d movies theaters have functions of spray, jet, vibration and leg sweep. Environmental simulation refers to installing the special effects devices which can create the scenes of snowing, raining, lighting and smoke. 3d and 4d movie have something in common, but also have some difference, common in creating effects of immersive and exciting feel, and different in movement experience exciting and visual experience exciting.
Film equipment
4d movies screen
Screen has several implications on enjoying movies, especially in quality of movies pictures. Screen also has effects on acoustic performance of speaker system behind the screen. Hence screen plays an important role in seeing 4d movies.
Polarized glasses
Conventional sunglasses can reduce the visible light, but very weak ability to resist glare. However, polarized lenses allow only light in one direction while attracting all the other directions through the dispersion of light, which can reduced glare. There is nothing relations between Polarized light and UV protection, but most polarized lenses contain UV blocking chemicals.
Single light, bifocal and progressive lenses are polarizing filter. Some common filter color includes:
Gray light, 35-43% of visible light penetrating
Medium gray, sometimes with color lenses and mirror lenses used together
Dark gray, 14-25% visible light transmission
Light brown or brown, 27-29% of the visible light transmission
Short dark brown 18-27% visible light transmission
Yellow, 68-71% of visible light penetrating

4d movies stunt seats
They have functions of water spraying, jetting, vibration and leg sweeping, which will simulate realistic environmental effects driven by pneumatic, and let audience feel tremendously exciting.
Digital Audio System
Digital Audio System such as Dolly or DTS can show sound effects which make audience fell “We-are-there”.
Prospects
4D movie is a combination of three-dimensional film and the product of special effects. As more and more widely used three-dimensional software, 4D film has also been developed rapidly. The integration of Special effects and three-dimensional images and plots brings new entertainment to the audience in the visual and physical effects of experience. 4D Cinema first appeared in the United States, such as the famous Spider-Man, Leap, California, T2, etc, are widely used in the form of 4D films.
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