Virtual reality
Around the same time, Douglas Engelbart used computer screens both as input and output devices. In 1968, Ivan Sutherland, with the help of many students including Bob Sproull, created what was widely considered to be the first head-mounted display (HMD) system for use in immersive simulation applications. It was primitive both in terms of user interface and realism, and the HMD to be worn by the user was so heavy that it had to be suspended from the ceiling. The graphics comprising the virtual environment were simple wire-frame model rooms. The formidable appearance of the device inspired its name, The Sword of Damocles.
Oculus VR
On September 26, 2018 Oculus VR announced a stand-alone virtual reality headset named "Oculus Quest". It uses motion controllers similar to Oculus Touch and has four wide-angle cameras for positional tracking and displays with resolution of 1600 x 1440 per eye with an option to adjust the lens spacing. The Headset will be launching in the spring of 2019. The starting price is $399 USD. The Quest is powered by the Qualcomm Snapdragon 835 mobile chip. The stand-alone headset is not as powerful as the high-powered Oculus Rift. The Quest, unlike the Oculus Rift, does not require a personal computer to operate or sensor towers to track one’s movement. This makes it possible to move around more easily in a virtual environment without tripping over physical wires or wearing a cumbersome backpack that contains a PC. The headset is lighter and more comfortable to wear with the weight more evenly distributed.