Head tracking means that when you wear a VR headset, the picture in front of you shifts as you look up, down and side to side or angle your head. The current crop of VR headsets go way beyond this - Oculus is capable of 90fps, for instance, while Sony's PlayStation VR manages 120fps. Most high-end headsets make do with 100 or 110 degree field of view, which is wide enough to do the trick.Īnd for the resulting picture to be at all convincing, a minimum frame rate of around 60 frames per second is needed to avoid stuttering or users feeling sick. A 360-degree display would be too expensive and unnecessary. One important way VR headsets can increase immersion is to increase the field of view i.e. Try closing one eye then the other to see individual objects dance about from side to side and you get the idea behind this. These lenses focus and reshape the picture for each eye and create a stereoscopic 3D image by angling the two 2D images to mimic how each of our two eyes views the world ever-so-slightly differently. In some instances, these can be adjusted to match the distance between your eyes, varying from person to person. There are also lenses which are placed between your eyes and the pixels, which is why the devices are often called goggles. VR headsets use either two feeds sent to one display or two LCD displays, one per eye. Total immersion is what everyone making a VR headset, game or app is aiming towards - making the virtual reality experience so real that we forget the computer, headgear and accessories and act exactly as we would in the real world. Once your headset and power source are secured, some kind of input is also required for you to connect - whether this is through head tracking, controllers, hand tracking, voice, on-device buttons or trackpads. ![]() Standalone VR is something you'll be hearing more of too - in 2018 Oculus will launch the Oculus Go, and Lenovo's standalone Daydream headset is also expected.Įssential reading: Best VR games for 2017 Sony has also managed to crack the console scene with its Playstation VR. The likes of the HTC Vive and Oculus Rift provide PC-based operations, though major players such as Google and Samsung offer more affordable, smartphone-based headsets. While devices generally take the same form, how they project imaging in front of our eyes varies greatly. How does VR work? How does a virtual reality headset make you think that you're sitting in a spaceship in a distant galaxy when you are, in fact, actually about to bump into the kitchen counter? Well, with the army of VR devices expanding, we'll be explaining how they actually work.
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