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Comment by matt_the_bass | Hacker News Reader

How many angles/slices/images/whatever you call them can you fit on a single film? What is the limiting factor? What limits the form factor size?

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Right now targeting 48 angles/slices/images per hologram. Want to give a smooth "look around" feel.

Limited by the hardware/cost choices that get us good quality vs. reasonable cost.

Size of the holograms initially based on the hologram film that we already produce, which currently is 2"x3", 4"x5", and most recently 6"x8".

This is extremely interesting. What kind of SLM is that? As I'm sure you're aware 48 angles is unusually small for this kind of thing as most existing printers use (expensive) SLMs of at least XGA resolution, or 1024 horizontal angles; the limiting factor for resolution is generally the data pipeline and lighting setup rather than the printer hardware. But it sounds like you might be taking a radical approach.

ALso, are you targeting single or double parallax? Again the limiting factor there is usually software - there really needs to be a "Cura" of holography to properly democratize this (I am currently working on a Blender plugin, but that can't cover the entire scope).

Yes, we're taking a radical approach to make it something that can be more accessible. Kind of like the first Makerbot, but for holograms.

The SLM choice will be part of trying to get the right performance/cost mix.

The printer will probably be full-parallax capable, but we might lean more toward horizontal-parallax-only for most user cases, to simplify the image input requirements.

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