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Chaoss
Inspiring
July 30, 2014

How does the image appear far away inside the Rift

Of all the amazing things this device does and of all the technical details behind it and how they work that I know one thing I've never actually been able to wrap my head around is how the reality inside the Rift (especially the DK2) 'fits', how does a wall for example feel further away than the screen inside the unit? I know it has something to do with the lenses but that doesn't really answer it for me.

Another bonus question is I am super sensitive to flicker, yet I don't see any in the Rift and low persistence is 'on' how does that work without visible flicker at 75hz?

Even if I close one eye and loose the stereo 3D effect things still appear to scale and at the right distances rather than right up in my eye/face. I tried one of those Google cardboard devices and things still felt 'really close'

    2 replies

    owenwp
    Up and Coming
    July 30, 2014
    The lenses simply increase the focal distance, like a pair of reading glasses only stronger.

    Sensitivity to flicker at over 72hz is pretty rare, and very few devices produce flicker in that range so you may have never seen light in that frequency range before, or you have seen it and not known that it was flickering at all.

    The other important factor for scale is accurate FOV, and cardboard doesn't seem to get that quite right.
    ChaossAuthor
    Inspiring
    July 30, 2014
    "owenwp" wrote:
    The lenses simply increase the focal distance, like a pair of reading glasses only stronger.


    Ah ok, but how does it then allow me to 'look' at things close as well, my eyes go slightly crossed to focus on a cube that's only .5 meters away as they would in real life, but that doesn't cause everything to go out of focus

    "owenwp" wrote:
    Sensitivity to flicker at over 72hz is pretty rare, and very few devices produce flicker in that range so you may have never seen light in that frequency range before, or you have seen it and not known that it was flickering at all.


    Ah ok, I get headaches from monitor backlights that use PWM flicker and that frequency is usually around the 240hz mark, yet I don't get a headache from using the Rift.

    "owenwp" wrote:
    The other important factor for scale is accurate FOV, and cardboard doesn't seem to get that quite right.

    Yeh it feels like looking through one of those old stereo 3d photo viewer things from the 50's
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