On 01/07/10 20:11, Tony Duell wrote:
  Err, yes... But if I am setting up the optics in
a laser printer
 scanner, I want to be able to dtect where the beam is (roughly)
 going and then tweak the lenses/mirrors to get it where I want it. 
 Indeed. It's even more useful to get an instant response when you're
 setting up the focus...
 Getting down to 0.08mm is going to be interesting, what with
 beam-scatter and fluorescence. And I really don't like the idea of
  using a focus-finder to set it up... viewing a laser through a
  magnifying lens seems like a really dumb idea to me, even with
  safety goggles. 
This is something that I'd probably try to use a video camera with a
good macro lens and appropriate filter to adjust, so that you don't have
to worry about directly viewing the laser beam.
Pat
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Purdue University Research Computing ---