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difration lens tube

zxn474l

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I was wondering if a person took some difraction lenses and a green laser pointer with enough power 200mw at least and put a green laser in a 1/2 inch tube one foot long with a difraction lens in it would it act similar to a beam expander breakinig the single beam up into multiple beams widening the path but resticting the widening because of the tube right...so at the end of the tube would it have a "shot gun" type pattern in a narrow circle with multiple beams? This would be a cool effect!!! Someone try it and post some pictures so I could see please.
 

cust11

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I was wondering if a person took some difraction lenses and a green laser pointer with enough power 200mw at least and put a green laser in a 1/2 inch tube one foot long with a difraction lens in it would it act similar to a beam expander breakinig the single beam up into multiple beams widening the path but resticting the widening because of the tube right...so at the end of the tube would it have a "shot gun" type pattern in a narrow circle with multiple beams? This would be a cool effect!!! Someone try it and post some pictures so I could see please.

Or.... you could try it, post pictures, and a review. Don't rely on everyone else to fulfill your curiosities. I am sure this could possibly be built for $20 in parts and a little "elbow grease".

-Mike
 

RA_pierce

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I'm not sure exactly what you are trying to accomplish with this.
It seems to me that you are trying to use a diffraction grating to make multiple beams and then collimate them so that they are all parallel (rather than all the beams separating at an angle).
I don't understand why you think a piece of pipe would be able to do this.

It would be a neat effect, but it would be a little more complicated to accomplish this than a diffraction grating and a tube.

By the way, this probably should have gone in the optics section.
 




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