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Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

litiholo.com

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Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#61

Post by hologram-paul »

dTal wrote: post #53
tinus_hn wrote: post #23

Would be nice if this would become available as a reasonably priced service for a one off print

Worth noting that this exists already, here and there; you can get full color, full parallax digital holograms from, at the very least, Geola [0] - though "reasonably priced" is a matter of opinion! Making it economical is pretty difficult - the issue is that "mastering" is an inherently time-consuming process; you're writing each hogel one at a time, each hogel is only a square millimeter or smaller, and you're prin…

We think bringing the technology to a level where you have the hologram printer and can work directly with it will be key in helping holograms go beyond where they have struggled before.

Similar to 3D printing, putting one in your workshop is different than just knowing that there is a workshop out there that will make one for you.

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#62

Post by duckfang »

hologram-paul wrote: post #22
DivisionSol wrote: post #15

I'm on the verge of contributing to the Kickstarter, trying to get a sense of what I'm seeing: 1) http://www.litiholo.com/images/buzz-on-the-printer-crop-809x... Wondering what the artifacting is on the left side of the hologram itself? Is this a problem with this specific hologram, or will all holograms have this artifacting? 2) Same image, but I'm not quite sure Buzz is centered in the middle of the ... work plate?…

The artifact you are seeing is a test alignment hogel on these early holograms. Do not expect that in the final system. Likewise, the demo holograms had different border areas, and some with fingerprints (definitely cleanable). The film plate will need some border area. Still working on where we will be with ease of hackability. Thanks for the compliments! Hope to see you as a backer and please recommend to the maker…

Will it "require" the cloud or you otherwise retain remote control over it, like Cricut or Glowforge?

If so, that is a complete dealbreaker for me. I'd assume that is also the case for others as well.

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#63

Post by btbuildem »

OK, so it's not a true hologram -- you cannot rotate it in multiple different ways to see what's on the other side, how does it look from the bottom, etc.

It's a sequence of frames encoded by viewing angles respective to the print surface. This printer lets you make your own lenticular cards, except they're smooth in texture.

EDIT: thanks for expanding my understanding of what holograms are :)

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#64

Post by hologram-paul »

btbuildem wrote: post #63

OK, so it's not a true hologram -- you cannot rotate it in multiple different ways to see what's on the other side, how does it look from the bottom, etc. It's a sequence of frames encoded by viewing angles respective to the print surface. This printer lets you make your own lenticular cards, except they're smooth in texture. EDIT: thanks for expanding my understanding of what holograms are :)

No, these are true-laser recorded holograms, capturing the interference pattern of the laser light. The current printer uses horizontal parallax only, but we do have full-parallax as a stretch goal for the Kickstarter.

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#65

Post by BugsJustFindMe »

btbuildem wrote: post #63

OK, so it's not a true hologram -- you cannot rotate it in multiple different ways to see what's on the other side, how does it look from the bottom, etc. It's a sequence of frames encoded by viewing angles respective to the print surface. This printer lets you make your own lenticular cards, except they're smooth in texture. EDIT: thanks for expanding my understanding of what holograms are :)

> OK, so it's not a true hologram

https://en.wikipedia.org/wiki/Hologram disagrees. This appears to be using real laser holography.

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#66

Post by hologram-paul »

BugsJustFindMe wrote: post #65
btbuildem wrote: post #63

OK, so it's not a true hologram -- you cannot rotate it in multiple different ways to see what's on the other side, how does it look from the bottom, etc. It's a sequence of frames encoded by viewing angles respective to the print surface. This printer lets you make your own lenticular cards, except they're smooth in texture. EDIT: thanks for expanding my understanding of what holograms are :)

> OK, so it's not a true hologram https://en.wikipedia.org/wiki/Hologram disagrees. This appears to be using real laser holography.

Amen!

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#68

Post by Grustaf »

hologram-paul wrote: post #33
Grustaf wrote: post #24

Earlier quoted context omitted.

I love holograms, always found it extremely fascinating, but this is not really an argument. Anything _could_ sort of become the next personal computer, the question is why you think specifically holograms are useful?

I feel like anywhere you see a flat 2D image could be a 3D hologram eventually. And holograms give the "whole message", so more information, better information, clearer information. That's the potential. So portraits, some day hologram cameras, CAD output, advertising, and yes eventually hologram television/displays. But we are starting with something more simple, and not trying to promise everything to everyone. Tha…

I certainly hope you’re right, I want to see holographic displays replace lcd for one thing, even though I’m a bit skeptical.

3d tv flopped, it could have been a start of something, terrible as it was. Lightfield cameras didn’t take off either, maybe because of the price. Let’s hope this could be a beginning!

Re: Show HN: LitiHolo – a desktop 3D hologram printer that makes true holograms

#70

Post by ALittleLight »

hologram-paul wrote: post #47
detritus wrote: post #45

Earlier quoted context omitted.

Two suggestions for your site: • Knock off the first 30 seconds of your 'interior shots' video where the machine is presumably registering itself. I don't much care about that :) • Show the resultant printed film from the side on somewhere, so we can see how thin it is. From first glance, I got the impression the output was quite thick, whereas apparently it's only 16 microns (taken from your spec sheet). It might se…

Thanks! The film plates are on 2mm thick glass, and the actual holographic recording layer is 16 microns, with a coversheet material over that.

I agree with the feedback of having a picture better capture the thickness of the holograph plate (or whole assembly, whatever that's called). From the Buzz Lightyear picture I got the impression that it would be something like a thick picture frame, but that doesn't match the 2mm description.

Would it be possible to use these as badge photos? I feel like it would be pretty cool to have a hologram picture on your badge.

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