[Laser] Homemade beam expanders?

Fri, 18 Jul 2003 09:47:12 -0700

We've (SDMG) been using beam expanders for several years now with good 
success.   I believe Chuck, WB6IGP ( [email protected])
has  more of the  cheap  surplus lenses  we have been using & can fill you 
in on the details.
  - Kerry N6IZW -

At 12:27 PM 7/18/03 -0400, you wrote:
>I remember someone mentioning some homemade beam expanders.  I heard 
>somewhere that you could make some out of lawn-sprinkler accessories or 
>something.  I'm looking for a way to get the divergence of my laser pens 
>down for some long-distance comm work.  Can anyone help??
>
>Andy
>K0SM/2
>
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