Search found 440 matches
- Tue Jan 19, 2021 9:52 am
- Forum: General Holography
- Topic: Mounting Photopolymer Film
- Replies: 3
- Views: 2579
Mounting Photopolymer Film
An easy way to mount photopolymer film to glass plates is to use a pouch laminator. The one I've used since the mid-1990s is the Ibico GL-9, often still available on Ebay. They were made first in Mexico, then in Korea. Be certain to get one made in Korea (it is mentioned on the label on the bottom),...
- Sun Nov 08, 2020 9:13 pm
- Forum: Beginning Holography
- Topic: Holographic Optical Element (HOE) of simple reflection mirror
- Replies: 13
- Views: 13088
Re: Holographic Optical Element (HOE) of simple reflection mirror
System #2 if you don't have a stable table. System #1 if you do, and want best results. Both will work fine. Others may say system #2 gives best results.
- Wed Oct 21, 2020 9:18 pm
- Forum: Optics
- Topic: Question About Cylindrical Holograms.
- Replies: 2
- Views: 6478
Re: Question About Cylindrical Holograms.
You have it essentially right, but in practice a computer generated image would be used (instead of a sculpture), and that image would be digitally predistorted to give you what you want. There would also be a huge problem with lighting the resulting film, unless the reference beam used to make the ...
- Mon Oct 19, 2020 8:20 am
- Forum: Beginning Holography
- Topic: Horizontal stripes - along same depth, like ISO lines...
- Replies: 17
- Views: 14362
Re: Horizontal stripes - along same depth, like ISO lines...
My favorite tape too, and a "must have" for any hololab. You're right about edge "ringing" from cards used to mask edges, but if they are only a few inches away, the issue is minimized. Also, I'd worry about tape touching photopolymer that's only very lightly attached to the glas...
- Sun Oct 18, 2020 2:40 pm
- Forum: Beginning Holography
- Topic: Horizontal stripes - along same depth, like ISO lines...
- Replies: 17
- Views: 14362
Re: Horizontal stripes - along same depth, like ISO lines...
Those lines can form from reflections off the bottom edge too. I like to use cardboard masks to block light from hitting the edges. Nothing to clean. Really nice to see such good results with that material after four years! Especially with a darkish subject. I think the "iso lines" you men...
- Sun Oct 18, 2020 8:58 am
- Forum: General Holography
- Topic: RGB tests with HX200 photopolymer
- Replies: 18
- Views: 9186
Re: RGB tests with HX200 photopolymer
The one I use does not have an LED light on the nose.
- Thu Oct 15, 2020 10:38 am
- Forum: General Holography
- Topic: RGB tests with HX200 photopolymer
- Replies: 18
- Views: 9186
Re: RGB tests with HX200 photopolymer
Tank of nitrogen.
- Thu Oct 15, 2020 8:52 am
- Forum: General Holography
- Topic: RGB tests with HX200 photopolymer
- Replies: 18
- Views: 9186
Re: RGB tests with HX200 photopolymer
First, I do it in a dedicaterd area that's kept clean. I use an anti-static airgun (pictured below) to blow the dust off the glass plate first. That keeps dust from being attracted to the surface. Then I use a small laminator I got and modified 20+ years ago to put the film down. Finally, I trim wit...
- Tue Oct 13, 2020 10:16 pm
- Forum: General Holography
- Topic: RGB tests with HX200 photopolymer
- Replies: 18
- Views: 9186
Re: RGB tests with HX200 photopolymer
Agfa was 1.5mm for 4x5", 3mm for larger. 1mm is fine for photopolymer, even 0.7mm. Thicker works better for DCG because DCG is formed via crosslinking, which can bend substrates that are too thin during exposure causing motion fringes.
Re: Skulls!!
Wonderful! Any info or credits to share? Is it for sale? I wonder how many unique holograms of skulls exist? 100? Lots more? I wonder how many have been made in the 4 years since my original post? I still like them. Seems like a suitable goal for a collector. C'mon everybody .... show us your skulls...