Home made diffraction grating.

[lapompo]

Ok!

I made a diffraction grating and well figured it fits most here since its Home Made

heres a video of how it looks in use
http://www.youtube.com/watch?v=LY73d68J_Ps

and if it arises ill make a better "DIY" video than the one I got of it currently Don't know if its been made (probably has) but here is mine atleast figured it out all on my own hehe.

enjoy!

 

[Tensu]

Look nice, easy to build and to a low price.
Nice

 

[Hemlock_Mike]

How did you cut the grating ?? Glass or plastic? I didn't watch the whole video. That's quite a trick to make a grating.

Mike

 

[lapompo]

How did you cut the grating ??  Glass or plastic?  I didn't watch the whole video.  That's quite a trick to make a grating.

Mike

It's plastic used from the clear plastic thingy from DRiver-CD envelope thingys I recon it can easily be done with glass aswell =)

 

[691175002]

For those that don't want to watch the entire video, he has placed bits of clear plastic between two sheets so that you can shine a laser through them and produce some random patterns.

I don't know if this is classified as a diffraction grating. A grating takes advantage of interference to create a regular pattern and is generally thousands of very precise lines or dots per inch scribed into a glass or plastic filter.

You can use a diffraction grating to separate light like a prism, measure lights wavelength etc.

This is more of just a textured filter, the assorted bits of plastic between the two sheets bend the light a bit.

 

[lapompo]

For those that don't want to watch the entire video, he has placed bits of clear plastic between two sheets so that you can shine a laser through them and produce some random patterns.

I don't know if this is classified as a diffraction grating.  A grating takes advantage of interference to create a regular pattern and is generally thousands of very precise lines or dots per inch scribed into a glass or plastic filter.

You can use a diffraction grating to separate light like a prism, measure lights wavelength etc.

This is more of just a textured filter, the assorted bits of plastic between the two sheets bend the light a bit.

hmmm ye your right read up on Diffraction gratings and it doesen't qualify for that

but you gave me an idea on how i can make a similar thing only without the randomness

 

[hawthori]

hmmm ye your right read up on Diffraction gratings and it doesen't qualify for that

but you gave me an idea on how i can make a similar thing only without the randomness

Go on craigslist and find old rear projection tvs people are trying to get rid of. They have large fresnel lenses in them(diffraction grating)

 

[Tech_Junkie]

Dude this thread was last replied to in 2009.

 

[Cyparagon]

Go on craigslist and find old rear projection tvs people are trying to get rid of. They have large fresnel lenses in them(diffraction grating)

Lens ≠ grating