Electronics > Beginners
Looking for Small Hi Res LCD used in Oculus && || VR et al
paulca:
I think for VR, if that is what you are trying to achieve, the screens are the easy bit. It's the lenses that are the golden bit to give the wide field of view and create the immersion. That and pre-distorting the image displayed on the screen so it looks like wrap around vision in the goggles. That and of course the 6 axis head tracking.
I have used video goggles (for FPV flying) which was basically two tiny half inch LCD displays mounted in a headset, even supported 3D movies. It was absolutely nothing in comparison to the oculus rift. In the TV goggles it literally looked like you were looking at a small screen about 6 foot away from you. With the Oculus lenses they open the view wide, bring the "world" out around you, nearly covering your whole eye movement with your head stationary, allowing you to literally look around with your eyes.
Mechatrommer:
--- Quote from: paulca on January 08, 2020, 02:52:52 pm ---I have used video goggles (for FPV flying) which was basically two tiny half inch LCD displays mounted in a headset, even supported 3D movies. It was absolutely nothing in comparison to the oculus rift. In the TV goggles it literally looked like you were looking at a small screen about 6 foot away from you. With the Oculus lenses they open the view wide, bring the "world" out around you, nearly covering your whole eye movement with your head stationary, allowing you to literally look around with your eyes.
--- End quote ---
thanks for sharing your experience. so.. is oculus rift using small lcd/oled too? or light projector type such as used in Avegant Glyph and Microsoft HoloLens? afaik the spec indicates its using small lcd/oled (istr saw the resolution spec but cant find it now) it will be interesting to try (buy? :phew:) the oculus rift if its using small lcd but the view can cover large eye vision area (special lens?) without visible lcd pixelation.
i'm not sure if retinal light projection is usable in camera -> lcd -> lens -> eye application such as FPV. even if i can get lcd and lens or projector that can cover near 180 degrees eye vision, then i have to find fish eye camera suitable for it, another rarity. and then distortion and image fidelity will be another issue when what i want is to focus on a particular area or zoomed in view, tunnel view is what i think i'm looking for, retinal projection or augmented reality is another uncharted territory. but keep the idea in its appreciated.
grifftech:
cv1 is oled
paulca:
There are VR cameras. It's how the shoot VR movies. They are usually limited to 180* (though 360* 3D camera do exist) obviously a fixed position, but you can look around and they give you a 3D view which spans 180* vertical and 180* horizontal. The 3D can really bring things into life-like, especially things up close in your face. I have no idea of the cost of availability though. i wouldn't imagine they would be that expensive as 360* cameras are readily available, a 180* 3D camera can't be that much.
On pixelation. With the Oculus if you stare off into space, you can see what they call a "screen door effect", in that if you concentrate you can see the pixel boundaries. However when immersed in a game or movie you really don't notice these, you actually have to look for them to see them.
For gaming the resolution is adequate but is not even quite as good as a solid 1080p monitor, or at least that is the perception. The screens from memory are 1080*1200x2, yes they are vertical aspect and the mirror on the monitor for some games shows this with an odd vertical narrow window. When people upload videos they usually crop them, like I did in the one below.
On zooming down a tunnel vision, tele-photo style. This is where the immersion actually starts to hurt. The oculus does such a good job of tuning into your natural vision centres that when you do anything that your brain does not expect you can feel nauseous. In the video below there might be one or two moments I use the "VR Zoom" function and it can be a bit upsetting. I'm fine with it, but looking around while zoomed in can be a bit freaky.
On nausea, I am usually fairly okay with things, so much time spend flying in flight sims and FPV I'm resilient, but a few things have brought me close to barfing. Playing games where you walk around using the keyboard can be slightly naseating, especially if you also rotate with the mouse as your brain is confused by apparent visual motion of you body it can't account for. But the one that immediately made my remove the headset was when the Flight Sim in the video below had a bug where when you re-flew a mission the VR coordinate system reversed itself. Looking left moved your vision right, up was down and moving your head side to side went in the mirror direction. That immedaitely caused me to wretch and remove the headset!
paulca:
3D 180 camera look fairly easy to get.
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