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I don't understand these units. It says the display is "7680px x 4320px". Shouldn't there be a third dimension? Or is it displaying 2D images with a depth indic

I don't understand these units. It says the display is "7680px x 4320px". Shouldn't there be a third dimension? Or is it displaying 2D images with a depth indicator (i.e. no pixel can be directly in front of another pixel)?

jjk166 5y ago
It says No. of Views: 42-100, but it uses 2 display ports each capable of 7680x4320, which suggests it takes just two images and interpolates between them.
jonplackett 5y ago
I think it works like a lenticular - the 3d only works horizontally (because our eyes are on that plane). So the 7680 pixel resolution is divided into pixels being sent in a variety of directions to create the depth. We have one at work and it’s quite cool. But also quite small even though we have what was previously the large one.
TheCoreh 5y ago
There is some sort of film on top of the display that allows "selecting" pixels based on viewing angle. This is not unlike those 3D postcards that were a fad some time ago, or the Nintendo 3DS, only a much more sophisticated version of that.
- CobrastanJorji 5y ago
  The 3DS is really neat. It does do the postcard thing ("parallax barrier"), but only to make sure each eye gets a separate image. It then uses face tracking to get a much more accurate idea of exactly where the eyes are and renders the image with that in mind, so slightly moving or turning your head adjusts the image appropriately.
nomel 5y ago
There aren't voxels, so you can't represent the depth in a simple quantized way. You can use VR for a similar example. Each eye gets its own perspective as an image at some resolution. 3d comes from your eyes relating the pixels in each image. Sure, there's a minimum angular resolution for each pixel, so there's a minimum resolving power for the depth, but you the end up with a bunch of rays rather than bounded boxes, with the resolution depending on things like the convergence of your eyes. This case is similar, with how close you are also affecting things.
Miraste 5y ago
They use a single standard display with advanced optics to send light from columns of pixels in different horizontal directions. You can see here https://docs.lookingglassfactory.com/keyconcepts/quilts https://docs.lookingglassfactory.com/keyconcepts/quilts the format it uses to display still images. The 8K version is 5 by 9 for 45 separate angles, giving a 3D resolution of 864x864x45(horizontal). As somebody else said, it's not really a voxel because the 3d effect is technically a trick and doesn't work on other axes. If you think 864p seems low for a 32" display, that's because it is - I've seen these in person and they have terrible pixel density. They're still very cool, though. 3D without glasses or a headset is impressive.
- CobrastanJorji 5y ago
  Thank you so much for that clear explanation!

jjk166 5y ago

It says No. of Views: 42-100, but it uses 2 display ports each capable of 7680x4320, which suggests it takes just two images and interpolates between them.

jonplackett 5y ago

I think it works like a lenticular - the 3d only works horizontally (because our eyes are on that plane). So the 7680 pixel resolution is divided into pixels being sent in a variety of directions to create the depth. We have one at work and it’s quite cool. But also quite small even though we have what was previously the large one.

TheCoreh 5y ago

There is some sort of film on top of the display that allows "selecting" pixels based on viewing angle. This is not unlike those 3D postcards that were a fad some time ago, or the Nintendo 3DS, only a much more sophisticated version of that.

CobrastanJorji 5y ago
The 3DS is really neat. It does do the postcard thing ("parallax barrier"), but only to make sure each eye gets a separate image. It then uses face tracking to get a much more accurate idea of exactly where the eyes are and renders the image with that in mind, so slightly moving or turning your head adjusts the image appropriately.

nomel 5y ago

There aren't voxels, so you can't represent the depth in a simple quantized way. You can use VR for a similar example. Each eye gets its own perspective as an image at some resolution. 3d comes from your eyes relating the pixels in each image. Sure, there's a minimum angular resolution for each pixel, so there's a minimum resolving power for the depth, but you the end up with a bunch of rays rather than bounded boxes, with the resolution depending on things like the convergence of your eyes. This case is similar, with how close you are also affecting things.

Miraste 5y ago

They use a single standard display with advanced optics to send light from columns of pixels in different horizontal directions. You can see here https://docs.lookingglassfactory.com/keyconcepts/quilts https://docs.lookingglassfactory.com/keyconcepts/quilts the format it uses to display still images. The 8K version is 5 by 9 for 45 separate angles, giving a 3D resolution of 864x864x45(horizontal). As somebody else said, it's not really a voxel because the 3d effect is technically a trick and doesn't work on other axes. If you think 864p seems low for a 32" display, that's because it is - I've seen these in person and they have terrible pixel density. They're still very cool, though. 3D without glasses or a headset is impressive.

CobrastanJorji 5y ago
Thank you so much for that clear explanation!