Reminds me that there are limitations to volumetric displays—namely that, since you have no idea where the viewer is located, there is no backface culling you can perform. So it seems to work best for "cutaway" views.
I'd like to see one in person. Might be "magical" — the video only kind of hints at this.
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
An earlier iteration of the same block is imo more impressive in its creativity - https://www.youtube.com/watch?v=6wBrOV2FJM8&t=720 - such an unexpected and yet completely natural extension of the brick set.
Before I watched the video, my brain ran ahead and I imagined it would be one of those led "fans", except also rotating around it's base. It might be harder to sync the two rotations, but you'd have much less mass in motion that way.
The solid state ones are cool! The real mystery there is how the pixel volume was manufactured -- it doesn't seem like something easily DIY'd
I wonder if you could have a vibrating chladni plate with sand on it and you match when the sand should jump with the light that's meant to be at that spot. You get the interruption of light looking like a mid-air pixel and then when it isn't needed it drops back down allowing light to pass through. Kind of like one of those mist-screens except there isn't mist where you don't need it.
Would be great having one of these hooked up to an LLM agent so it can be somehow “embodied”. Like a Siri + volumetric display + speaker. Waiting for a company to build this.
I once considered making a spinning persistence of vision similar to this one specifically for visualizing lidar data from a spinning automotive lidar. The lidar has 128 beams and you could make a spinning array of 128 1D LED displays at exactly the same beam angles to recreate the point cloud from the lidar.
Anyway, I was too lazy to make it, but it's super neat to see that someone actually made something similar.
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.
Reminds me that there are limitations to volumetric displays—namely that, since you have no idea where the viewer is located, there is no backface culling you can perform. So it seems to work best for "cutaway" views.
I'd like to see one in person. Might be "magical" — the video only kind of hints at this.
This ones does not: https://www.youtube.com/watch?v=wrfBjRp61iY
Volumetric display in the video above uses static projector whose pixels light up etchings inside solid glass.
https://news.ycombinator.com/item?id=46137203
oh wow yeah I've seen a lot of this channel's work before the lego display, the CV fiber optic bundle display
The solid state ones are cool! The real mystery there is how the pixel volume was manufactured -- it doesn't seem like something easily DIY'd
- software
- math
- 3d printing
- electronics
Very impressive.
Anyway, I was too lazy to make it, but it's super neat to see that someone actually made something similar.
[1] https://www.voxon.co/ [2] https://en.wikipedia.org/wiki/Ken_Silverman
Uh, I get the former but why the latter?
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.
https://www.youtube.com/watch?v=nM7wsXcYQFM
which I guess is the "volume" part
[1]: https://youtu.be/pcAEqbYwixU?t=1038