How Oculus Rift WorkFikrian Haikal Bahrul Ilminudin

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What is Oculus Rift?

Oculus Rift is a virtual reality head-mounted display(a

display device, worn on the head or as part of a helmet,

that has a small display optic in front), being developed

by Oculus VR. The Oculus Rift is a new virtual reality

headset that lets players step inside their favorite games and virtual worlds.

How Oculus Rift Work

The cable

Video is sent to the Oculus Rift viaHDMI, with an optional DVIadapter for laptops and newergraphics cards. It also includesUSB, which carries data andpower to the device, and lets yourcomputer know what this bizarregizmo is. This 10-foot cable is justthe right length to provide aconsistently good signal withoutany degradation, while remaining

The positional tracker

Tracking the position ofyour head in 3D space iscritical to the way the Riftworks. One of the ways itachieves this is with aseries of infrared LEDsembedded in the headset,which are monitored by awebcam-like cameraplaced nearby

The headset

All this feeds into the headset,which connects to your head viavertical and horizontal straps, withthe uppermost strap including theHDMI and USB cable. Furthercustomisation is achieved with twopairs of lenses, which magnify thescreen so it fills your field of view.Oculus includes a tall set, for thosewith normal vision and moderatenearsightedness, and a shorter setfor very nearsighted users.

The components

Within the headset sits a singlecustom motherboard, which includesan ARM processor and control chipsfor the LEDs. But the most insane bithere is the Adjacent Reality Trackerwhich was developed independentlyof the Oculus Rift, but has sincebecome a key component. Thisfeatures a magnetometer, agyroscope and an accelerometer, allof which combine to accurately trackthe rift across all three dimensions ofthree-dimensionality.

The screen

In Oculus Rift Development Kit 2the screen was essentially an entireSamsung Galaxy Note 3 phabletwith the smartphone bits removed,but with the completely uselesstouchscreen and logo intact. Its1920 x 1080 HD resolution deliversa 960 x 1080 display to each eye; itsrefresh rate of 60 Hz keeps thingssmooth, and a 100-degreehorizontal field of view meanstheres not too much black spacearound the edge of the display.

The feedback loop

A huge amount of data is continually sent back and forthbetween the positional tracker, the headset, the computerand its software, and the result is an incredibly smooth VRexperience. Adjustments such as brightness and contrastare made via Oculus' software, which also includes theability to calibrate the Rift, set your height and enter yourinterpupillary distance (IPD), aka the size of the gapbetween your pupils. Once you've done all this the OculusSDK also includes a bunch of natty demos to try out.

The audio

As mentioned in the intro, Oculus gave the headset amassive boost in January 2015 at CES when it announcedthat an upcoming Oculus Audio SDK would allow the use ofHead-Related Transfer Function (HRTF) tech, combinedwith the Rifts head tracking to create a sense of true 3Daudio spatialisation. This will allow Rift developers toimmerse users "sonically in a virtual world, surrounded byrealistic sounds in all directions."