No way, UV lasers are too weak.
Lens collimator source is what I'm asking for.
Thanks.
"Earl T. Hackett, Jr." <
hacketet@...> wrote:
laser beams are almost perfectly columinated. You just have to control dot size. The simplest technique would be to use a pinhole just a bit smaller than the circuit trace you want to create and just trace the circuit. That would get the job done in a reasonable time period. A 0.025 mm dot size would be appropriate for a raster scan technique. I think a .15mm dot size would do just about any board you want and with a 10 second exposure the speed would be about 90 mm per minute. That would image a small board in a reasonable time period.
----- Original Message -----
From: Steve
To: Homebrew_PCBs@yahoogroups.com
Sent: Monday, May 02, 2005 11:00 AM
Subject: [Homebrew_PCBs] Re: collimator help
I think he means he wants to collimate a UV laser beam.
Steve Greenfield
--- In Homebrew_PCBs@yahoogroups.com, "Brian Clancy" <bclancy1@b...>
wrote:
> G'day
> I haven't tried it myself but I one saw reference to using the eggcrate
> diffuser for flourescent lights and painting it matt black to eliminate
> reflections.
>
> There was a light loss involved of about 25% I think.
>
> Cheers
> Brian
>
> -------Original Message-------
>
> From: Homebrew_PCBs@yahoogroups.com
> Date: 05/02/05 14:49:49
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] collimator help
>
> Anyone knows where to order an UV Collimator?
> I'm working to replace the mill on a CNC Milling Machine with a
.0254mm UV
> beam, on presensitivized PCB.
> Cristian
>
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