Oculus Rift bluriness

category: general [glöplog]
I just tried it on my job, coding something for it (with Unity plugin).
My first impressions were oh why it's blurry? Also you can see the screen grid or something. Not just the pixels. I wouldn't mind about the big pixels if it wasn't for the bluriness. And I thought this was the reason for blurry vision, but maybe it's not.

But when I tried second time I realized something. It gets better if I wear it above my glasses. I can even read text. The first time I didn't wear the glasses, because I thought it wasn't supposed (the lens inside move like a spring, I thought it's gonna crash my glasses and it would be dumb). But then I read someone said you can use them and it's better. And so I got less blur.

So, you have to wear it above your real glasses. But the question is why? I have glasses so that I can see things far away in the real world. But with Oculus the screens are near my face, so why would myopia be corrected here? The far away world is virtual. The real glasses did the trick but why? (Also does this apply with telescopes or binoculars?)

p.s. Another thing is the height. If I wear it a bit above, ok the options text is more on the center and is sharper, so maybe it's more blurry away from the center. But there is also this IPD value which I tried to change and no visible difference happened. What is this? Why it makes no difference?
added on the 2014-04-03 11:29:11 by Optimonk Optimonk
I have glasses so that I can see things far away in the real world. But with Oculus the screens are near my face, so why would myopia be corrected here?

The screens are physically near your face, but the lenses inside the OR change the focus, so the screens are optically far away.

In other words, they might be 5cm from your eyes, but you see the screen at some distance (not sure what it is for OR, but it's typically ~2m) away. So if you need glasses to see something 2m away clearly, you would need glasses.

And yes, people use glasses with telescopes.
added on the 2014-04-03 11:44:34 by psonice psonice
I have the same issue with the Epson BT-100 glasses.
The virtual projection point is near the infinite, and that's a big issue with myopia. My DSLR have an adjustment knob for the viewfinder and it does a perfect job.

Manufacturers of these devices should definetly implement that kind of optical adjustments, because few people have eagle eyes.
added on the 2014-04-03 11:55:16 by Natopsi Natopsi
The DK1 comes with 3 sets of lens cups, did you try the B or C cups? For near sighted either of those should allow to use the Rift without glasses.
added on the 2014-04-03 12:01:18 by tonic tonic
Oh, I think I understand, it's like the ratio of distance of screen from eyes and the projection cone would be analogous. Similar triangles and stuff (I have the image in my mind, just can't explain but that must be it). I also read, in binoculars/telescope of course there are the knobs, to adjust to focus especially for each person, so glasses are not necessary. I should try the B/C at some point.

Also, I just noticed the square is moving, there are diferrent position, distance. But didn't seemed different to me.
added on the 2014-04-03 14:55:04 by Optimonk Optimonk
I mean distance / width (which in oculus are small lenses just to fit your cone view).
added on the 2014-04-03 14:55:45 by Optimonk Optimonk
The next versions are not blurry. John Carmack did a lot of writeup on this. Basically, they are using displays that clear themselves to black between each frame, sort of like an old CRT, effectively eliminating most of the blur.
The new display has more Hz and they insert black frames in between.
I like C-cups btw.
added on the 2014-04-04 13:27:14 by raer raer
i think optimus was talking about the display being out of focus btw, not the motion blur effect from the screen being slow
added on the 2014-04-04 14:17:36 by psonice psonice
added on the 2014-04-04 14:38:02 by Optimonk Optimonk
C cups are nice but I usually go for B cups.
added on the 2014-04-04 16:20:37 by MsK` MsK`