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Old 06-22-2009, 05:26 AM #1
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Cool Laser Goggles + Diffraction Gratings

I am looking to buy laser goggles (RGB preferred but must contain at least green)
[IMG]abolfazl.me/images/Laser%20Goggles.jpg[/IMG]

I would also like to have some different diffraction gratings.

I can pay ASAP via PayPal


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Old 06-22-2009, 09:28 AM #2
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Default Re: Laser Goggles + Diffraction Gratings

Laser Wave broadband goggles $60(1 more)

There lazy. Like 55 shipped
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Old 06-22-2009, 03:45 PM #3
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Default Re: Laser Goggles + Diffraction Gratings

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Originally Posted by themandalorian View Post
Laser Wave broadband goggles $60(1 more)

There lazy. Like 55 shipped
DJ I <3 U
Just bought the Goggles. Just need the diffraction gratings now
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Old 06-23-2009, 02:20 PM #4
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Default Re: Laser Goggles + Diffraction Gratings

I have some diffraction sheets, 13,500line XY axis, 6"X10" size, easily trimmed with a decent pair of sharp scissors or razor knife.. PM me if interested
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Old 06-23-2009, 02:31 PM #5
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Default Re: Laser Goggles + Diffraction Gratings

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I have some diffraction sheets, 13,500line XY axis, 6"X10" size, easily trimmed with a decent pair of sharp scissors or razor knife.. PM me if interested
How many different kinds on diffraction are there
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Old 06-23-2009, 03:59 PM #6
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Default Re: Laser Goggles + Diffraction Gratings

I've seen 3 patterns at least, the fan (line of dots), the matrix (grid of dots), the mandala (circle of dots). There are transmission and reflection grattings, Try this, (but be careful not to hit an eye), if you point a pointer into a CD, and move the dot around the disk, it reflects several dots which circle as the dot is moved a little like a solar system. -GH
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Old 06-23-2009, 04:01 PM #7
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Default Re: Laser Goggles + Diffraction Gratings

Dragon Lasers had 4 high quality ones for $38 but I was looking for something cheaper
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Old 06-23-2009, 04:12 PM #8
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Default Re: Laser Goggles + Diffraction Gratings

The difference is in the material they are made of, standard gratings are made of a flexible plastic (almost like a thin polycarbonate) while the higher-end ones are done with acrylic or in extreme cases (and price points) optical glass.

The main differences I've seen performance-wise are in transmissability (?) meaning the higher-quality gratings have less "loss" (that and the rigid gratings are better suited for permanent mounting and more exacting alignments when used for spectography, etc).
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Old 06-23-2009, 04:17 PM #9
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Default Re: Laser Goggles + Diffraction Gratings

I have the dragon lasers gratings. They are good quality, I would recommend them but they screw you on shipping pretty bad. I think it cost like $20+ to get them shipped to the USA. But those where the only ones I found that were thick glass.
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Old 06-23-2009, 04:23 PM #10
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Default Re: Laser Goggles + Diffraction Gratings

Quote:
Originally Posted by BrewCityMusic View Post
The difference is in the material they are made of, standard gratings are made of a flexible plastic (almost like a thin polycarbonate) while the higher-end ones are done with acrylic or in extreme cases (and price points) optical glass.

The main differences I've seen performance-wise are in transmissability (?) meaning the higher-quality gratings have less "loss" (that and the rigid gratings are better suited for permanent mounting and more exacting alignments when used for spectography, etc).
So what quality are your "sheets". PM me

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Originally Posted by MISTERWILLING View Post
I have the dragon lasers gratings. They are good quality, I would recommend them but they screw you on shipping pretty bad. I think it cost like $20+ to get them shipped to the USA. But those where the only ones I found that were thick glass.
Willing to sell?

I also found these on eBay. How do these compare to the DragonLaser one
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Old 06-23-2009, 04:38 PM #11
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Default Re: Laser Goggles + Diffraction Gratings

The O-like ones are most likely optical glass (being acetone resistant) but thin (1mm) and really tiny (6mm square) ... These are the ones they design into the "diffraction pointer" heads, less than 1cm square so they're definitely good quality but at that size are prob a real pain to do a lot of experimenting with.

IIRC, the sheets I have are rated at 90% trans, so they're about 5% less efficient than these, I've noticed with the sheets too that the farther you go off axis (sheet needs to be perpendicular to the beam) the higher the loss.
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Old 06-23-2009, 04:40 PM #12
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Default Re: Laser Goggles + Diffraction Gratings

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The O-like ones are most likely optical glass (being acetone resistant) but thin (1mm) and really tiny (6mm square) ... These are the ones they design into the "diffraction pointer" heads, less than 1cm square so they're definitely good quality but at that size are prob a real pain to do a lot of experimenting with.

IIRC, the sheets I have are rated at 90% trans, so they're about 5% less efficient than these, I've noticed with the sheets too that the farther you go off axis (sheet needs to be perpendicular to the beam) the higher the loss.
What is the thickness of yours and how many different kinds do you have
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Old 06-23-2009, 05:38 PM #13
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Default Re: Laser Goggles + Diffraction Gratings

Hey Brew City, I'd love to buy a sheet or two if you'd sell cheap. They cost so little if you buy in bulk, but individually I can't find them cheap. Well, I live in the US. PM me a fair price and I'll probably get it.
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Old 06-23-2009, 05:39 PM #14
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Default Re: Laser Goggles + Diffraction Gratings

Also, I have some of those o-like gratings if you'd want to trade or something... just a suggestion.
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Old 06-23-2009, 05:41 PM #15
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Default Re: Laser Goggles + Diffraction Gratings

The ones from O-like seem to flimsy and cheaply made :\
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Old 06-23-2009, 05:45 PM #16
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Default Re: Laser Goggles + Diffraction Gratings

They're not flimsy, they're glass. And they're definitely made better quality than sheets. However, the only downside is that they're small, very small. They're made to be permanently mounted and the end of an aperture cap or something on a laser pointer, not for playing around use.
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