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The interface to this virtual world is a
telepresence display device called the BOOM (Binocular
Omni-Orientational Monitor) and is referred to as a "head-coupled"
display. This process is very similar to using a pair
of binoculars that provide a movable, wide-angle window
into the virtual space. The BOOM incorporates very wide
field-of-view optics and two independent CRT displays
packaged together as an integrated viewing head with user
hand grips and buttons for viewpoint manipulation. In
addition to the interface advantages of the BOOM, it uses
mechanical tracking technology to overcome many of the
limitations associated with magnetic trackers. As a result,
images presented on the BOOM are typically more stable
and respond more quickly than on head-mounted systems.
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