Firstly, it means wavefront reconstruction by interference and diffraction/reflection. “”Holography has come to take on two meanings in our culture. That is, they KNEW that by the accepted definition, it is NOT, so they found an expert who would say that this is how the definition of “hologram” has been downgraded, because they really, really wanted to use that word, even if deceptively: So, here’s the thing: the Kickstarter page spends two paragraphs justifying calling this a hologram. These eventually add up to form the image. My elevator explanation of digital holography is that they create holograms of little squares of light, or hogels, placed in virtual space, one at a time, sequentially. Back when I was doing the making of the holograms with ~80 mW of green laser, exposures took around 5 minutes, which is an eternity when nothing can move more than, say, an eighth of a wavelength. The caveat is that the film is a couple orders of magnitude less sensitive than good fine-grained silver halide plates. Pretty cool stuff in that it eliminates the development process which is messy and can be a source of problems and failures in and of itself. After a time you can look through the plate and see the image forming, though as it overlays the image of the object itself it’s kind of hard to tell until the object is moved out of the way. You set up your geometry, put the plate in place, settle, and turn on the laser. It is a photopolymer that self-develops as it is being exposed. I have used the film to create conventional holograms, both transmission masters and reflection secondary holograms. I would back this project if it would be OSHW, I think its niche but has a lot of practical applications, but I am not going to get into a vendor lock-in for a niche prototype. But lenticular costs a fraction to make, has no lighting issues, colors are accurate and you can order 100s in 24 hours. Lenticular sucks compared to a large format digital hologram. none became a digikey of holography, not because its not cool…the market doesn’t price the wow factor to the cost of material, time and content production for these devices. There has been several companies trying to do this on a larger format and multi color over the last decades, most failed and closed shop, Zebra was the leader, I think it got sold out after financial problems. What sucks is he’s falling for the good old closed fixed specs system to sell only his film and this becomes a niche product for hardcore holography fans (you can see from the kickstarter that its not a lot of people for an international campaign). Now whats cool about this project is the fact that you can do it at home with no cancer causing chemicals and is relatively cheap compared to the other solutions out there. If you look at the creator’s profile, he’s a small holography workshop selling self-developping film. It requires lighting at a specific angle like reflexion holograms. You guys talking about lenticular are really off, but that’s understandable with all the holocrap bs marketing out there. There is a reference beam and the light modulator (probably an lcd) simulates the object beam. They could cram 100 viewpoints per mm square if they wanted to but I guess they are trying to balance usability with minimal specs to get something acceptable out of the door and not wait hours to render. They could eventually do it full parralax. Posted in 3d Printer hacks, Crowd Funding, Laser Hacks, News Tagged desktop hologram, hologram, hologram printer Post navigation You can even get kits that have most of what you need. Of course, if you have the laser gear, you can already make your own holograms. Plus, if this catches on, what will be available in ten years time? Will people pay $1600 for low-resolution holograms? More importantly, is there a market for grainy holograms that would let you earn back the investment? Maybe not, but that hasn’t stopped us from buying 3D printers and other workshop toys. Since 5 inches is 127 mm the hogel resolution of the result is about 101×127, and the samples on the website and the video below certainly don’t look like they are in HD. In the 4×5 size, the film runs about $13 a plate which will create one hologram. Of course, you’ll also need a special self-developing film and a way to get 3D images into the printer such as software or a camera set up to do a 3D scan. The machine allows for 23 view zones per hogel and can create moving holograms with a few seconds of motion - like the famous kiss-blowing holograms. It can generate 4×5 inch holograms with 1mm hogels (the holo equivalent of a pixel). The machine will have a $1600 retail price and fits in a two-foot square. Holograms aren’t new, but a desktop machine that spits them out could be available soon, presuming LitiHolo’s Kickstarter pans out.
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