What's In The Oculus Rift Box
The Oculus Rift's package includes several components. You get the Rift HMD, of course, and a cable that connects it to your PC. The tether is 4m long, and it splits off into USB and HDMI ends. The side that plugs into the Rift employs a proprietary plug.
The Rift includes one Constellation tracker that sits on a pedestal designed to rest on your desk. It sends head-tracking information to your PC through a USB 3.0 cable (the 2.5m cable also powers the sensor).
Oculus announced a pair of controllers, called Touch, that will introduce hand tracking to the Rift platform. However, Touch won’t ship until the second half of 2016.
You also get an Oculus media remote that lets you control basic experiences like menu navigation, some games and non-interactive content. It exposes a D-pad, navigation disc, volume controls, selection button, back button and an Oculus button that takes you back to the Home environment. The media remote features the same buttons found on the GearVR HMD, so anything ported from that platform should work natively.
For more involved gaming, Oculus partnered with Microsoft to include an Xbox One controller and a wireless USB receiver. This is the default input device for Rift games, at least as they exist today. Oculus says that most of the developers who started working on VR content using one of the early dev kits used Xbox controllers, so it made sense to add official support.
Oculus also bundles some free content with its Rift. You get Lucky's Tale, a third-person platformer akin to classics like Banjo-Kazooie or Crash Bandicoot, and two short films created in-house by the Oculus Story Studio (Henry, an animated short about a hedgehog on his birthday, and Lost, another animated short that demonstrates the Rift's audio and visual systems). Pre-ordered hardware also comes with a copy of CCP’s anticipated space dogfighting game EVE: Valkyrie, one of the few titles with a AAA price tag.
|Oculus Rift Box Contents|
|Hardware||Rift HMD with integrated supra-aural headphones (removable) and mic Constellation tracking camera sensor with standWireless media remote|
|Cables||4m HMD 2-in-1 cable (HDMI 1.3/USB 3.0, attached) 2.5m Tracking camera sensor cable (USB 3.0)|
|Controls||Xbox One Wireless ControllerWireless adapter for WindowsAA batteries (2)USB extender cable for wireless adapter|
|Miscellaneous||Cleaning clothRift carrying case|
|Downloadable Software||Lucky’s Tale game EVE: Valkyrie Founder’s Pack (available to Rift pre-order customers only)|
The Rift HMD
The final Rift HMD is a lightweight, head-mounted display that provides a fully immersed visual and auditory experience. As Oculus puts it, the Rift delivers a sense of “presence” within a virtual environment.
The hardware loosely resembles a pair of ski goggles, in that you wear it over your eyes and it straps to your head. The entire headset (except for the front plate), inside and out, is wrapped in a special fabric that conforms to the odd-shaped surface of the HMD. Oculus says this fabric helps keep condensation build-up to a minimum. It also gives the HMD a pleasing aesthetic design. The soft fabric surface used for the outside feels vaguely similar to a fine denim material. For more on what went into wrapping the Rift in this material, check out Oculus' Uncompromising Obsession With Hardware.
Inside the Rift, we find two low-persistence AMOLED displays developed by Samsung. These screens have a native resolution of 1080x1200 (totaling 2160x1200 between them) and a 90Hz refresh rate. That high refresh is important. In a 2014 interview with Gamasutra, Oculus CTO John Carmack said that 90Hz is the magic number where 95 to 99 percent of people don't notice the refresh rate in VR anymore, though it sounds like there is good reason to push for even higher rates in the future.
The display panels are isolated by cones that reach from the screens to the lenses, so your left eye only sees the left screen and your right eye sees only the right screen. Oculus uses custom hybrid Fresnel lenses to alleviate the screen door effect, though some of us are still sensitive to the effect on shipping hardware. But the company says it designed the lenses to match the HMD's screens as well as possible, yielding optimal clarity, particularly at the sweet spot in the center.
The Rift includes an interpupillary distance (IPD) adjustment dial that lets you specify the correct distance between lenses, calibrated to your eyes. This is similar to a pair of binoculars, but more complex in that the lenses and displays move together with the adjustment. Oculus enables an IPD range between 58mm and 72mm to cover most adult faces (the average is 64mm). This bottom end of that scale won't account for young children, which is one of the reasons Oculus suggests an age rating of 13+. That could change in the future, though. In an interview with Code, Oculus CEO Brendan Iribe drew a parallel with Facebook's similar age requirement, saying that represented a good place to start. However, he expressed interest in an Oculus for kids once there was more confidence in the health and safety side of VR.
Oculus uses a stretchy material with properties similar to Spandex inside of the Rift, helping it breathe (moisture vapor passes through it) and conform to adjustments you make. The entire inner structure is covered by this material.
|Oculus Rift Specifications|
|Display Type & Size||Dual low-persistence AMOLED (PenTile subpixel matrix)|
|Resolution||1200 x 1080 (per eye)|
|Field of View||~100-degrees|
|Lens Type||Hybrid Fresnel|
|Lens Adjustment||IPD (58-72 mm), lens-to-eye distance (adjustable with optional glasses spacer)|
|Sensors||Accelerometer, gyroscope, magnetometer|
|Tracking Technology||6 DOF Constellation camera optical 360-degree IR LED tracking|
|Audio||Microphone, integrated supra-aural 3D spatial audio headphones (removable)|
|HMD Ports||Proprietary headset connector (HDMI/USB 3.0)|
|HMD Cable Length||4 m|
|Materials Used||Plastic, IR-transparent fabric, glass, foam rubber|
|Dimensions||~171 (~216) × ~102 mm(W (width including headphones) × D)|
|Weight||470g (excluding cable)|
Audio Is Not An Afterthought
Oculus also developed a high-quality audio system for the Rift. In virtual reality, sound is just as important as the visual aspects. VR immerses you in another world, but that world isn’t believable if the audio cues aren't realistic. Thus, Oculus had to develop specialized audio components to give developers the tools they needed for adding believable sound to their creations.
Oculus installs its own digital-to-analog converter (DAC) and microphone inside the headset, and the company provides a pair of integrated headphones attached to each Rift. These open-back headphones have been tuned to work specifically with Rift games, and Oculus provides developers with an SDK for the audio system. It's no small feat that Oculus designed the headphones to work with a broad range of head shapes, but still provide every wearer with an uncompromised experience, all without sacrificing comfort. The headphones are attached to the head strap, utilizing pivot, swivel and height adjustments to rest right where you want them. Spring tension helps keep them snug against your head.
Oculus encourages developers to optimize for the integrated headphones, though you're not explicitly limited to them. The company knows that some customers will want to use their own headphones (or gaming headset). So, the Rift's integrated sound system disengages from the head strap with some help from an included tool if you'd rather substitute in another audio device. You'll simply have to run an additional cord to connect it; the Rift does not include a pass-through audio jack.
Proper Weight Distribution
The Rift is actually a fairly small device. Its body measures just 6.75 inches wide (or 8.5 inches, counting the headphones) and 3.5 inches tall (add half an inch for the face gasket). We weighed the Rift at 470g with its cable disconnected, exactly matching Oculus' specification.
To keep the HMD securely in place, Oculus engineered a three-point strap that redistributes its weight over your entire head, rather than resting on your face. On several occasions we've heard Oculus mention that this is imperative to making the Rift comfortable, a critical first step before VR can become immersive. The upper strap is made of a flexible material that's almost leather-like in texture. It's too early to tell, but the strap does seem to be durable. Much of the top strap is covered by Velcro to accommodate as many head sizes as possible.
The two side straps are made of a rubber-like material that flexes, but doesn't lose shape. Oculus lines the inside of each strap with a suede-like material that is soft to the touch. The straps have Velcro adjustment points at the front, which let you customize their tension to fit your head. Those side straps attach to the headset through a spring mechanism, so even after fitting them for use, you can remove the headset comfortably without undoing the Velcro. If you're the only one using the Rift, you should be able to set the strap positions once and not have to mess with them again.
The rear brace of the strap is triangular, and made of a somewhat rigid plastic. Its outside surface is covered by the same fabric as the device's body, covering another constellation of LEDs to help enable the Rift's 360 degrees of head tracking. The inside is covered in the soft-touch material found elsewhere on the strap. The rigid triangle sits low on the back of your head, playing an important role in balancing the HMD's weight. Its contribution makes it possible to wear the Rift for hours without the discomfort you'd expect from half a kilogram tugging on your face.
Consequently, the Rift puts some pressure on the back of your head and rests gingerly on your cheeks. To ensure its unobtrusiveness, Oculus lines the shaped face plate with a soft foam that absorbs much of the force needed to keep the HMD securely in place. The foam is conformant, helping to reduce light bleeding in from external sources. The face plate is also made of a soft, flexible plastic that helps the Rift mold to your facial structure.
Just as there is a large range of interpupillary distances that need to be compensated for, humans sport quite the variety of facial features, too. Oculus designed the Rift with a removable face plate that you can swap out for a different size. This will also help address wear and tear. You’ll be able to buy replacements as the foam cushion shows signs of age. It'll also better accommodate customers who wear glasses. Although our Rift sample didn't include an extra, Oculus has mentioned that it plans to sell face plates designed to account for wider glasses.
Constellation Tracking System
Tracking is imperative to an immersive VR experience. Samsung's Gear VR uses gyros and inertial sensors, which the Rift does as well. But a key differentiator is the Rift's positional tracking, which lets you lean in, peek around corners and even duck down to the ground. To an extent, you're able to move around your play space. As you might imagine, getting this right has proven challenging. If what you see on-screen is misaligned from where you're positioned, the effect can be jarring.
Oculus developed its own tracking system that it calls Constellation. The feature is enabled by a sensor that sits on your desk and detects an array of IR-emitting LEDs cleverly hidden under the Rift's fabric exterior. The LEDs are embedded through the front, sides, and back of the HMD, again, facilitating 360 degrees of tracking (that is, you can turn around and the sensor still knows your position).
The Constellation system includes just one sensor for the Rift, though the same technology will be used to track the Touch controllers as well. You'll get a second sensor with those to ensure occlusion-free operation. In contrast, HTC's Vive, which provides room-scale tracking, comes with two IR emitters to place on either side of your room.
The tracking sensor is attached to a wide pedestal base. It's on a swivel that lets you adjust for whether you're standing or sitting.
Oculus also considered the possibility that you may not want to leave the sensor on your desk. Perhaps you're using the Rift where there is no desk, or you'd prefer a permanent wall mount. The Constellation sensor can be removed from its pedestal stand and secured to a standard tripod or speaker mount. The pole holding the sensor comes apart, exposing standard camera mount threads.
|Sensor mount:||Integrated stand, 1/4-20 camera mount compatible|
|Tracking:||Integrated constellation tracking: IR LEDs under fabric shell|
|Sensor cable:||2.5m cable|
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