Facebook has found a tip to reinforce the immersion of its future virtual reality headset

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While today's virtual reality headsets have a sharpness distance of 2m or more, the varifocal moving screens of the future Oculus Dome will allow you to vary focus and thus enhance immersion.

If you've ever tried a VR headset, you've probably seen the problems of sharpness, especially on nearby objects. The reason for this blur is that the area of ​​sharpness of the current helmets is fixed at 2m and beyond, making the close texts illegible.
The future Oculus Dome presented at the F8 conference could change the game in terms of image accuracy: the lenses placed in front of the LCD panels are no longer fixed as they are now, but moved and moved micrometrically by a camera. mechanical system.
Like cameras, the Oculus Dome has a kind of autofocus system that will allow, for example, to adjust the sharpness on a piece of paper or a book that a user takes (virtually) in hand to read its content comfortably.

Facebook does not give details on how the headset knows when and where to focus: is it an eye position detection system like it was in Canon EOS 3 film SLR? Or do programmers script the interactions? One thing is certain: once the technology is complete, a backtrack will be impossible since the lack of precision of the image in some scenes is, with the synchronization of the signal and the definition of the LCD / OLED panels, one of the points. key to improving the comfort of VR headsets.

Another significant improvement that the Oculus Dome should bring: a field of vision expanded to 140 ° against 110 ° for the current Oculus Rift. Enough to reinforce the immersion, until a builder arrives one day to propose a device equivalent to our horizontal arc of human perception which is 210 °!
As Ars Technica recalls, the Oculus teams did not share more details about the optical construction (conservation of Fresnel lenses?), A key element of the image quality but also a constant source of challenges and physical limits.


In any case, Oculus seems to be making good progress on the roadmap he set for himself at the 2016 F8 conference, as shown in this screenshot.
Progress on the field of view and the sharpness area are already on track. All that remains is the 4K OLED / LCD tiles to finalize their vision at 5 years old. But the development of these components is in the hands of manufacturers such as Japan Display, Epson, LG or Samsung and it remains to Oculus to cross their fingers so that their roadmaps stick to his.

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