Rainbow Symphony (https://www.rainbowsymphony.com/diffraction-gratings) has reasonably priced single and double-axis gratings. They have lots of other possible optical toys that may be useful too. Also, nice people...
Ron
Rainbow Symphony (https://www.rainbowsymphony.com/diffraction-gratings) has reasonably priced single and double-axis gratings. They have lots of other possible optical toys that may be useful too. Also, nice people...
Ron
I have some, pm me if interested
RGB laser projectors
Pangolin Beyond .NET
APC40 Midi controllers
Pangolin FB3 controllers
DZ splitter
LS MegaWatt Green Machine
Hey mate, I have some Creative laser ones floating around somewhere ( glass, nice), linear and burst, I think around 30mm x 30mm square
KVANT Australian projector sales
https://www.facebook.com/kvantaus/
Lasershowparts- Laser Parts at great prices
https://www.facebook.com/lasershowparts/
Like the discharge tubes for cal sources. Too bad they don’t sell the power supply they are out of stock.
All of the original Machida gratings that I've seen were made of glass. However, there were several knock-offs (including one called a "Michado" or something), and at least one of the clone gratings was, in fact, nothing but a bunch of optical fiber placed side-by-side and glued in place.
I bought several "Laser Line Generating Optics" from Meredith Instruments back around 1999-2000, and those were also made up of a bunch of optical fiber. The fiber strands were glued to one side of a round metal disc with a hole in the center. (Basically like a washer you'd put on a nut and bolt.) They generated a spray of perhaps 400 tiny beams in a 175 degree fan - maybe 178 degrees even. There was almost no variation in brightness among the beams.
These things were cheap as hell (like, under $10 delivered) and were mounted in a heavy aluminum block that had a rotating portion with a solenoid that would engage the teeth around the edge of the mount to stop the rotation.
Here's what the actual element looks like once you removed it from the mount: https://photonlexicon.com/gallery/bu...LineOptic9.jpg
And this is the effect it would create: https://photonlexicon.com/gallery/bu...a/DSCF0103.jpg
That is 10 mw of DPSS 532 nm green, 15 mw of Argon 488 nm, and ~ 8 mw of 632.8 nm from a HeNe in a perfectly dark room. You only see what made it through the doorway, so it's hard to tell just how wide the fan really is, but take my word for it: it's as close to 180 degrees as anything you'll ever see.
I'm sure you could easily make this yourself with some fiber, a washer, a pair of scissors, and some hot glue...
Adam