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Heilig invents the Tele sphere Mask which was the first head-mounted display.
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Headlight was created by Comeau and Bryan for the department of defense to observe dangerous situations remotely.
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Ivan Sutherland proposed an idea for a HMD that would be indistinguishable from reality and allow you to interact with your surroundings.
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Thomas Furness created the first flight simulator for the air force.
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Sutherland created the first head mounted VR connected to a computer rather than a camera, producing wire frame shapes that changed view due in response of the user due to new tracking system. It was named The Sword of Damocles.