Hi there,

I would love to use your program, but the requisite CGHmaker.JAR file seems to be missing... can you help me out?

Hi.

My question is simple. Which algorithm the CGH-Maker use to create the CGH?

Two improved output ideas:

There exists ink-jet printable "Shrinky Dinks" transparencies. One prints on them with an ink jet printer, then bakes them in the oven, and they shrink by a factor of 5 or so. This could give you higher resolution. I don't have room for links, but they aren't hard to find.
The other idea: Burning images straight to CD: see http://www.instructables.com/id/Burning-visible-images- onto-CD-Rs-with-data-beta/

Here's an idea for an almost practical use: The Protein DataBank ( RSCB.org) contains hundreds of atomic models of important molecules. The standard format for these is the .PDB file. Take a look at one of these files in a text editor, and you will see that it's very similar to your text list of points. A short Perl or even Excel script could probably convert between formats-- then each atom could be represented by a holographic dot, giving one way to view the model in three dimensions.

I'm embarrassed that I haven't implemented any of these myself, but resources are limited. I hope this is inspirational.

-Bryan

Hi,

Recently I am working on your program and came across so many hurdles. I have realized that I needed a good laser printer to be able to get better quality transparency printing. So I have bought HP printer (HP 8000 series) that says Office Jet. I thought it was a laser printer and then bought "INNOVERA Laser Printer Transparency Film, Letter, Clear, 50 per Box" from EBay to make my expenses less. However, I have realized that my printer is an Inkjet printer and the copies are good for black and white transparency on Laser Printer. I was disappointed a little bit with my rush. So I have done some research on-line and decided to use those laser printer transparency films on my Inkjet HP printer. Mean while I have spent some money to buy the “hologram kit” from Intergraph that also gives me laser pointer. Yesterday I have received the Hologram kit and the laser. I have printed the hologram using three dimensional object xml file you have as the input and shined the laser through it. I was worried a little as the laser is 5mW laser and it may cause damage to my eyes. I am going to buy some laser protection glass with my next pay check (I have seen one for 35 dollars).

I do still have one question if you don’t mind.

If I shine the laser through the transparency film then the three dimensional object will be projected on the other side of the film on the wall (the distance between film and wall is 2 meters and the distance between laser and transparency film is 12 inches). Is that right setup? I did not see any image yesterday and I am going to try today again. I have a collimated lens that can make the laser spot much larger (around 3 inch radius – elliptical coverage). Can I use that instead of small spot of laser? In your description, you have mentioned the hologram can be re-produced even with a small spot, though.

Mary

Hi,

This is a very nice tool I came across on internet. I am very interested in the program and tried to down load this one. I am a student working on Hologram Science Project. I have tried to look at the source code. Honestly I don't have any idea on the JAVA application but good knowledge in C programming (not C++). Would you please let me know where I can find the theory and calculations behind that software? I am interested in contributing to this project too but did not know where to start. I have started learning JAVA as a first step and I want to learn the physics equations behind the software so that I can make a move on that too in parallel. I know I am asking many questions but if you can spare few minutes and through the stuff at me, I would appreciate it.

Thank you for your support.

Regards,
-Mary

Hi, this is a nice tool. Could you expand the code that 532nm Laser can be used as well? I think that the 500nm setting is too far away.

what is the graphic software?the printed is so big

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