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-   -   Optic lens to collimate/focus light from a LED. (http://www.physicsforums.com/showthread.php?t=662369)

David_woo Jan4-13 10:50 AM

optic lens to collimate/focus light from a LED.
 
1 Attachment(s)
Hello.

I'm looking for a lens that can collimate (or focus far away >500mm ) a light coming out from a LED.

before I give more details is this even possible?

Thanks.

Integral Jan4-13 12:12 PM

Re: optic lens to collimate/focus light from a LED.
 
Take a pick, do you want it collimated or focused?

David_woo Jan4-13 01:07 PM

Re: optic lens to collimate/focus light from a LED.
 
if the focused focal is far away it doesn't matter, I just looking for divergent/convergent angle smaller to 1 degree.

but if you want a pick lets said collimator.

Integral Jan4-13 01:53 PM

Re: optic lens to collimate/focus light from a LED.
 
A point source at the focal distance of a lens will produce a parallel beam out. So you want a 10-30mm focal length lens.

You need the thin lens equation.


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