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Optic lens to collimate/focus light from a LED.

  1. Jan 4, 2013 #1

    David_woo

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    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.
     

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    David_woo, Jan 4, 2013
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  3. Jan 4, 2013 #2

    Integral

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    Take a pick, do you want it collimated or focused?
     
    Integral, Jan 4, 2013
  4. Jan 4, 2013 #3

    David_woo

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    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.
     
    David_woo, Jan 4, 2013
  5. Jan 4, 2013 #4

    Integral

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    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.
     
    Integral, Jan 4, 2013
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