To create a feeling of immersion, special output devices are needed to display virtual worlds. Well-known formats include head-mounted displays or the CAVE. In order to convey a spatial impression, two images are generated and displayed from different perspectives (stereo projection). There are different technologies available to bring the respective image to the right eye. A distinction is made between active (e.g. shutter glasses) and passive technologies (e.g. polarizing filters or Infitec).
Nintendo's Labo series of games/arts-and-crafts sets for the Nintendo Switch have interested us since the first Labo Variety Kit came out. You build your own controllers with cardboard and play games using the Switch and motion-sensing Joy-Con controllers. Now Nintendo has returned to VR (a field it hasn't set foot in since the ill-fated Virtual Boy) with its fourth Labo package, the Labo VR Kit. https://www.youtube.com/watch?v=H3UGqoGlmIs&t=1s
There’s a second class of Virtual Reality HMD that is really just a shell with special lens that pairs with a smartphone to deliver a VR experience. These devices can sell for almost nothing (and are often given away free), and deliver a scaled down VR experience that still approaches the immersive experiences generated by much-more expensive hardware. https://www.youtube.com/watch?v=xYz-fDX1bdM&t=1s
But the competition is closer than ever. Vive is also excellent (and still offers the best room scale), while the Sony PlayStation VR is a big seller thanks to its significantly lower price and the ubiquity of PlayStation 4 consoles ready to run it. There are now better standalone VR headsets too if you want a hassle-free route to the immersive realms. https://www.youtube.com/watch?v=1udaCG1JiWU&t=1s
Microsoft HoloLens is shaping up to be another formidable competitor in the HMD market. Unlike VR tech, Microsoft based their display on holographic technology. The original Hololens was more proof of concept than consumer device, and the recently announced Hololens 2 is again eschewing the public in favor of enterprise/government uses. The Hololens 2 will feature upgraded visuals, including a much-expanded field of view — music to fans of the original device, who settled on the limited FOV as the main drawback of the device. https://www.youtube.com/channel/UCi-Pcc709EefbggMuGABWOA
HTC's Vive is a comprehensive package that includes a headset, two motion controllers, and two base stations for defining a "whole-room" VR area. It's technically impressive, and can track your movements in a 10-foot cube instead of just from your seat. It also includes a set of motion controllers more advanced than the PlayStation Move. PC-tethered VR systems like the Vive need plenty of power, with HTC recommending at least an Intel Core i5-4590 CPU and a GeForce GTX 970 GPU. https://www.youtube.com/channel/UCuZUSKAxEB_1l9hBpxEK_zQ
You can float down the Colorado River inside the Grand Canyon in this immersive VR adventure. Start off in calm waters and quickly get blasted in the rough whitewater rapids of the Hance, Granite, and Hermit. If you've always wanted to try an adventure on the rapids, but are a bit scared, this video will give you a sense of what it's like without the wet side effects. https://www.youtube.com/watch?v=GFPBJlJurQ8&t=1s
Sony’s entry into the market is the lowest powered of the three best-selling VR HMDs, but the PSVR has a big advantage over the Rift and Vive. Because it’s tethered to the Playstation 4 gaming system, there was an enormous, pre-existing user base of 10s of millions of gamers, many of whom were eager to try their hand at VR. Because that user base already had a PS4, Sony’s customers didn’t have to purchase/upgrade their computer hardware, making the PSVR the most “affordable” of the high-end HMDs. As such, the PSVR is the best-selling Virtual Reality HMD on the market, moving over 4 million units since its initial release, and showing that, if nothing else, VR gaming is here to stay.
By 1994, Sega released the Sega VR-1 motion simulator arcade attraction, in SegaWorld amusement arcades. It was able to track head movement and featured 3D polygon graphics in stereoscopic 3D, powered by the Sega Model 1 arcade system board. Apple released QuickTime VR, which, despite using the term "VR", was unable to represent virtual reality, and instead displayed 360 photographic panoramas. https://www.youtube.com/watch?v=d_qa-GO__zU&t=1s
Vive's Tracker might not look like much, but stick it on something and that "thing" becomes a controller. Yes, HTC is redefining how we think of mixed reality with this accessory, and now anyone can buy one. Developers have been busily finding exciting and unique ways to use the Tracker in games, which will require mounts for certain props, like guns and baseball bats. https://www.aliexpress.com/item/YI-HALO-VR-Camera-3D-360-camera-5GHz-Wi-Fi-2-2-Inch-LCD-Touch-Screen/32835202184.html
By 2016, there have been at least 230 companies developing VR-related products. Amazon, Apple, Facebook, Google, Microsoft, Sony and Samsung all had dedicated AR and VR groups. Dynamic binaural audio was common to most headsets released that year. However, haptic interfaces were not well developed, and most hardware packages incorporated button-operated handsets for touch-based interactivity. Visually, displays were still of a low-enough resolution and frame rate that images were still identifiable as virtual. https://www.youtube.com/watch?v=rvUzuK0ygI4&t=1s
Virtual reality sickness (also known as cybersickness) occurs when a person's exposure to a virtual environment causes symptoms that are similar to motion sickness symptoms. Women are significantly more affected than men by headset-induced symptoms, at rates of around 77% and 33% respectively. The most common symptoms are general discomfort, headache, stomach awareness, nausea, vomiting, pallor, sweating, fatigue, drowsiness, disorientation, and apathy. For example, Nintendo's Virtual Boy received much criticism for its negative physical effects, including "dizziness, nausea, and headaches". These motion sickness symptoms are caused by a disconnect between what is being seen and what the rest of the body perceives. When the vestibular system, the body's internal balancing system, does not experience the motion that it expects from visual input through the eyes, the user may experience VR sickness. This can also happen if the VR system does not have a high enough frame rate, or if there is a lag between the body's movement and the onscreen visual reaction to it. Because approximately 25–40% of people experience some kind of VR sickness when using VR machines, companies are actively looking for ways to reduce VR sickness. https://www.youtube.com/watch?v=VaZ2btqTvwI&t=1s
In 2014, Sony announced Project Morpheus (its code name for the PlayStation VR), a virtual reality headset for the PlayStation 4 video game console. In 2015, Google announced Cardboard, a do-it-yourself stereoscopic viewer: the user places their smartphone in the cardboard holder, which they wear on their head. Michael Naimark was appointed Google's first-ever 'resident artist' in their new VR division. The Kickstarter campaign for Gloveone, a pair of gloves providing motion tracking and haptic feedback, was successfully funded, with over $150,000 in contributions. Also in 2015, Razer unveiled its open source project OSVR. https://www.youtube.com/watch?v=ecajlIKwlCg&t=1s