Search found 314 matches

by lobaz
Fri Oct 24, 2025 9:08 am
Forum: General Holography
Topic: Multiplex Holograms
Replies: 4
Views: 1197

Re: Multiplex Holograms

If you just want to try, check "holographic printers": https://www.geola.com/product/digital-holography-ilumogram/ https://www.ultimate-holography.com/chimera I am not sure what input they accept; I'd expect a digital 3-D model or a series of images. In the latter case, animation should be...
by lobaz
Fri Oct 24, 2025 8:55 am
Forum: For Sale / Want to Buy / Trade
Topic: .
Replies: 1
Views: 1339

Re: Looking for HX200 film, plates, or something similar

As you are in US, check https://www.integraf.com/ first. Once you get some experience with the kit, try https://www.ultimate-holography.com/ . Finally, you could also check https://www.geola.com/ - while they mostly resell Slavich materials (the same as Integraf), they also offer small quantities of...
by lobaz
Wed Oct 08, 2025 7:43 am
Forum: Beginning Holography
Topic: In an image plane hologram, why does the front part of the hologram stick out from the plate?
Replies: 3
Views: 2329

Re: In an image plane hologram, why does the front part of the hologram stick out from the plate?

But convergence alone doesn’t create the illusion of floating in front. It does, even with concave mirrors. Have you seen "double concave mirror illusion"? See https://www.physics.purdue.edu/demos/display_page.php?item=7A-11 or https://ar.inspiredpencil.com/pictures-2023/concave-mirror-il...
by lobaz
Mon Oct 06, 2025 1:33 pm
Forum: General Holography
Topic: Looking For VRP-M geola/similar
Replies: 3
Views: 1471

Re: Looking For VRP-M geola/similar

Yes, I understand it. I have just mentioned AgX producers outside of Russia.
by lobaz
Mon Oct 06, 2025 1:18 pm
Forum: Beginning Holography
Topic: In an image plane hologram, why does the front part of the hologram stick out from the plate?
Replies: 3
Views: 2329

Re: In an image plane hologram, why does the front part of the hologram stick out from the plate?

Nothing special. Imagine a sheet of glass (plain glass, no hologram) and a shiny point behind it. A wave (a spherical one) emerges from it, passes through the glass sheet, and continues to infinity. If your eye is located in front of the glass sheet, you just perceive the spherical wave emerging fro...
by lobaz
Mon Oct 06, 2025 12:31 am
Forum: General Holography
Topic: Looking For VRP-M geola/similar
Replies: 3
Views: 1471

Re: Looking For VRP-M geola/similar

Sadly, there are not many options. As far as I know, the only remaining "large" AgX producers are Ultimate Holography ( https://shop.ultimate-holography.com ) and TruLifeOptics ( https://trulifeoptics.com/holographic-materials/ , formerly ColourHolographics). Especially Ultimate is worth a...
by lobaz
Mon Sep 29, 2025 12:42 pm
Forum: Beginning Holography
Topic: <deleted>
Replies: 1
Views: 1110

Re: Question regarding this 2D3D rainbow hologram

Behaviour of a rainbow hologram can be easily understood. First, make a thin transmission H1 hologram of an object, hologram size say 1 mm high and 100 mm wide. Then make a thin transmission H2 hologram out of it say 100x100 mm, H2 in the position of the original object. Suppose you use green light ...
by lobaz
Sun Sep 28, 2025 12:05 pm
Forum: Beginning Holography
Topic: Can anyone tell me what kind of hologram this is on this 1999 Pokémon card or provide any kind of insight?
Replies: 37
Views: 25003

Re: Can anyone tell me what kind of hologram this is on this 1999 Pokémon card or provide any kind of insight?

I would not say "familiar". I have seen a hologram or two originated with that machines, and I have seen the article(s) describing it. No hands-on experience. From what I see in the optical setup, the interference regime (object beam from SLM + independent reference beam) is not directly a...
by lobaz
Sun Sep 28, 2025 11:52 am
Forum: General Holography
Topic: which side should the emulsion face?
Replies: 11
Views: 2919

Re: which side should the emulsion face?

I guess Din's proposal is worth the effort: try the same with a conventional glass plate, possibly much smaller. That would hint whether the effect depends on presence of TAC, or film in general. By the way, can you describe what it means that one hologram is better that the other one? Is it in term...
by lobaz
Thu Sep 25, 2025 8:56 am
Forum: General Holography
Topic: Meta AR glasses
Replies: 4
Views: 1575

Re: Meta AR glasses

I didn't read the paper carefully, but I assume that the holographic lens corrects aberrations by distorting the wavefronts, based on some AI model. As far as I understood, light gets outcoupled from the waveguide a hits the SLM. Such SLM does not have pixels small enough and would not be able to r...