[ATM] Make A Barlowed Laser Collimator?

[Richard]

Hi RodShea,

Sunday, April 1, 2007, 12:38:00 AM, you wrote:

R> I have a red 635 nm laser...

R> lens or negative achromatic doublet..

Regardless of anything else Rod, you don't need an Achromat on a
Monochromatic light source. Go on, kick yourself :)

-- 

Best regards,
  Richard in the UK