Source for Lenticular and "Fuzz" scan through materials?

[laserist]

https://www.mcmaster.com/products/pe...ated-sheets-7/

Laser Images used to use perforated aluminum dipped in lacquer as standoffs with a "granite" art glass disk or as a disk with some other lumia disk for a nice effect. You dip the perforated part in the lacquer and spin it until the lacquer sets up. The result is an array of little negative lenses.

mesh | McMaster-Carr

Mesh disks, stainless steel, look up Ronchi Ruling and find a diffraction calculator on-line.

There is a limit on how fine you can go, but can be um, interesting at short range.

Two plastic sheet gratings crossed to each other on motors is the transmission version of lissajous patterns.

Steve

[VDX]

... some years ago I was developing applications with/for paste-dispensers for high viscous glues and pastes.

With this you can "print" all sorts and sizes of lenses or "regular surfaces" ... now image, you'll print some of this with the previously mentioned "Acrifix 192", what will give perfect transparent PMMA structures and surfaces

Attached images from a test pattern and a "tactile image", printed with blue UV-cured glue (would be the same structure with the transparent PMMA-glue ... and a video showing the process with a "braille-image" too:


https://www.youtube.com/watch?v=7pvA7BMRdNk


Viktor

[laserist]

Interesting - Thanks!

... some years ago I was developing applications with/for paste-dispensers for high viscous glues and pastes.

With this you can "print" all sorts and sizes of lenses or "regular surfaces" ... now image, you'll print some of this with the previously mentioned "Acrifix 192", what will give perfect transparent PMMA structures and surfaces

Attached images from a test pattern and a "tactile image", printed with blue UV-cured glue (would be the same structure with the transparent PMMA-glue ... and a video showing the process with a "braille-image" too:


https://www.youtube.com/watch?v=7pvA7BMRdNk


Viktor

[Slide]

... a hint for transparent glue - here in Germany I'm using "Acrifix 192" for glueing/fusing Plexiglas ... it's curing to pure PMMA, so too usable for "optical chaos" sheets

Viktor

Thanks for the tip. Sound like great stuff.

Craig

[Slide]

https://www.mcmaster.com/products/pe...ated-sheets-7/

Laser Images used to use perforated aluminum dipped in lacquer as standoffs with a "granite" art glass disk or as a disk with some other lumia disk for a nice effect. You dip the perforated part in the lacquer and spin it until the lacquer sets up. The result is an array of little negative lenses.

Nice, Ivan was such a great guy!

Craig

[Slide]

Taking a pointer to a stained glass shop can be a fun half hour. Aim at the ceiling. Problem is, its not well annealed, so making discs is an art form and drilling it is tough. Using a brass tube as a drill with abrasive powders, ie wet (water and detergent) 30,60,200 corundum or silicon carbide can be better some times then a glass bit. Drill press is a must. Belt sander with the right belt, a huge bonus, and dust mask / water mister to reduce chance of silicosis.

Squares, not so much a problem.

1/4" thick (6.25 mm) 1" diameter (25.4 mm) disks from Mcmaster Carr make great gluable lumia mounts, especially if you drill them for a soft tip set screw set screw for the motor shaft (Also Mcmaster Carr)

Steve

Cutting with a tube is a great idea. I drilled the centre out of an old school 1&1/2" thick mirror blank to have the option of turning a Newtonian into a Cassegrain. It worked well, bit slow going but did the job.

Thanks for the source.

Craig