Immersion goggles are designed to make virtual reality interfaces portable.  When you wear them a three dimensional picture would be displayed on the inside.  They could be plugged into a computer, use a wireless connection or possibly have a processor built in.  Some versions may also come with sound.

    This device has many possibilities in computer interfaces.  One is that it would allow for easy navigation and representation of three dimensional interfaces such as a cone tree.  Another is that it is smaller than a computer screen and can be folded up to carry conveniently, which could be useful in the portable computing field.  It would allow for better video conferencing because you could see the entire person in a virtual room instead of a talking head on your computer screen.  The three dimensional aspect would allow metaphors like "the desk top" to be taken farther.  You could also do something things which need to be easily visible in the current state are closer than than things which don't.  The uses in the gaming industry are innumerable, an example would be a flight simulator where you are in a virtual cockpit.  If the goggles could be made transparent or have a camera attached then it could be used as part of an augmented reality interface.

    This output device does have some problems though.  One is that new input and output devices will need to be created to allow of manipulation of objects in a three dimensional space.  Also, while the goggles do potentially take up less space than a computer screen this will not be a real advantage unless we can get rid of the keyboard and make the portable computer smaller.  Another problem is that it would provide no real advantage to a normal screen in tasks which are essentially two dimensional for example word processing.  Similarly they would not provide a significant advantage when using the current set of operating systems and applications.  Finally, unless there is a way to see the outside world while wearing them them, they would be hindrance to a task where you need to deal with the real world a lot because of the necessity of taking them on and off.