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Comment by samstave | Hacker News Reader

The only thing that was negatively conveyed in the video, is that it was apparent that the FOV on the device is narrow...

At one point, the camera shifted and you could see the image in the device fade out...

Also - it seems the viewing angle is fairly specific?

What would these look like mounted to a wall, perpendicular to the floor? Are they usable?

Whats the limiting factor on size?

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It's 45 views across a total of 50 degrees, that's 25 degrees off-center left and right. And there's only a single vertical angle. What gets displayed in those views is 100% implementation-dependent. There's no standard for how "deep" the objects should look, and there's no standard for the vertical angle either. So whether it will look good on a wall is content-dependent. I suspect that most content being made specifically for the Looking Glass will have a downward viewing angle in mind, as would be natural for having the device on a desk in front of you.

One of the other commenters suggests that it is displaying onto several layers of glass inside the block; I didn't watch the video but I wonder if the surfaces that it is displaying on could be curved in addition to this within the block, so that the image has a wider field of view..

It is not displaying on layers in the block. I have a 15" LookingGlass. The depth appears continuous, not in discrete layers.

The field of view is, to me, very wide. I'm not trying to show it to an audience and it is more than enough to immerse me. It is also important to note that the field of view comes with parallax: you can really see around corners. It is not just a wide field of view on the same stereo pair.

It's NOT layers in the block?

What happens if you move your head up and down relative to it (vertical angles), does the object not get vertical parallax?

It's definitely not on layers. There's a weird perspective illusion vertically but it's not parallax and you can't "see around corners" vertically. It's a lenticular effect, horizontal only. Check out the Vimeo holographic channel: https://vimeo.com/channels/thelookingglass Each video is a 5x9 matrix and each view is a different angle. If you're working with a 3D object and not a video it's the same deal - it has to be rendered from 45 different perspectives and these are sent to the device separately.

It's 5x9, but that's just how it's stored, right? The actual data comes from a linear array of 45 cameras, right? Or is it a curved array of 45 cameras along an arc?

Right, I think a linear array would work best since it matches where your eyes will be when you move left & right in front of the screen. https://lookingglassfactory.com/how-it-works/ It shows up on HDMI as 2560x1600 but I don't know how the physical panel is laid out.

There is no vertical parallax, just horizontal.

Could you ostensibly have a giant wall of this and make it a virtual 3D aquarium? Seems so...

A sni[ing game would be fun - with a foxhole view where you can move behind occlusions and shoot at small things far in the distance...

The feel is that of a periscope's view though...

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