Multivox: Volumetric Display

I think it's worth pointing out that "in operation" here means it's running Doom. Which I was not expected, and somewhat blown away (heh) by. Very very cool.

I think this limitation could be overcome with the right hardware.

For example imagine a spinning display like those of the article but somehow tuned so that they are only visible when exactly head on. In that case, you know where the observer is: right in line with the screen. So you can have backface culling; as the display spins you render all 360 (or however many) viewpoints.

Now granted, this doesn't deal with how high or low the observer is. We'd need to find another solution for that.

If only Halolens took off. Now we have to make do with Chinese drone performances at night.

I can see it making a great "radar" peripheral for 3d space games, think Elite Dangerous or No Mans Sky that both have one in their cockpits.

Thank you for sharing - it's a brilliant piece of tech. I posted this earlier but it didn't catch on with upvoting

https://news.ycombinator.com/item?id=46137203

The same person built both of these.

Whatever the outcome, when someone sets up an optical table, I'm sold.

feel like I saw this in a hackaday, at least remember hearing the podcast about projecting all the rays at all intersections, it was green though maybe I'm thinking of something else

oh wow yeah I've seen a lot of this channel's work before the lego display, the CV fiber optic bundle display

[Self-reply with side-topic] Assuming a rectangular display rotating in standard air... what glass enclosure would be best?

My intuition says "change the sphere to a cylinder", because then we can minimize how much air could be passing around the sides and top of the display-rectangle, potentially curling around and causing turbulence and noise.

However, that introduces a new issue of visibility: Big flat surfaces have different glare/reflection problems than a spheroid does. It may become harder for the user to see clearly, whether from external glare or from internal reflections in a dark room. What if the top face of the glass cylinder was very slightly curved outwards, to avoid the worst-case scenario where you just can't look down into the device from certain angles? Depending on the refractive index of the glass, it could just be a thicker top, so that it doesn't create dead-space on the inside.

My fav: a two-by-two LEGO block that can run and show Doom. https://www.hackster.io/news/james-brown-s-tiny-lego-brick-c...

There are companies that laser-'etch' 3D images into glass. I guess it's not that hard to find one that accepts a list of xyz coordinates.

Like the Morpheus character near the end of Deus Ex.

Also check out the company named "Light Field Displays" for stunning displays. Not exactly the same as volumetric. Arguably better in some ways. Definitely more expensive though.

https://www.holoxica.com/light-field-displays

Check out Voxon [1]. From the specs and youtube videos it seems like it's working on the same principle (rotating LED screen). Fun fact, it was co-founded by none other than Ken Silverman (the creator of Build engine) [2]. They've been pushing commercialization of this technology for years now.

[1] https://www.voxon.co/ [2] https://en.wikipedia.org/wiki/Ken_Silverman

>drives up the resolution and price.

Uh, I get the former but why the latter?

Why would they?

I mean, I think it's SUPER cool and would not mind one sitting on my desk.

But from a product standpoint...? It doesn't scale well in size, resolution or refresh rate.

VR is pretty much better if you want a the kind of immersion I think you'd be looking for, and even selling that is hard.

It was right there[1] in the assembly video.

[1]: https://youtu.be/pcAEqbYwixU?t=1038

yes.