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The Sword of Damocles (virtual reality)
The Sword of Damocles〔 is widely considered to be the first virtual reality (VR) and augmented reality (AR) head-mounted display (HMD) system. It was created in 1968 by hall of fame computer scientist Ivan Sutherland with the help of his student Bob Sproull. Before he began working toward what he termed "the ultimate display",〔 Ivan Sutherland was already well respected for his accomplishments in computer graphics (see Sketchpad). At MIT’s Lincoln Laboratory beginning in 1966, Sutherland and his colleagues performed what is widely believed to be the first experiments with head-mounted displays of different kinds.
== Features ==
The device was primitive both in terms of user interface and realism, and the graphics comprising the virtual environment were simple wireframe rooms. Sutherland’s system displayed output from a computer program in the binocular display. The perspective that the software showed the user would depend on the position of the user’s gaze—which is why head tracking was necessary. The weight of Sutherland’s HMD, and the need to track the head movements necessitated the HMD being attached to a mechanical arm suspended from the ceiling of the lab. The formidable appearance of the mechanism inspired its name. While using The Sword of Damocles, a user had to have his or her head securely fastened into the device to perform the experiments. At this time, the various components being tested were not fully integrated with one another.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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