Homebrew PCBs

A DVD laser is IR and a CD laser is red.  Would the optics from the lasers
work for UV?

 

Jeff

 

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From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Dave Sage
Sent: Friday, February 24, 2012 1:16 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Novel way to expose photo resist??

 

  

I presume a CD or DVD burner has all the optics required to focus the laser
diode to a very tiny spot. Maybe it's just a matter of swapping out the
diode for an ultra-violet version. Also concerning not being able to see it;
I know the coating inside fluorescent tubes converts a lot of ultra-violet
to visible light. Maybe a target made form a piece of coated glass could be
made to "see" the dot at least long enough to focus it if required.

Sage

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