Never heard of an f-theta lens. I looked it up on google, but I do not see how that solves the problem unless you use a really big lens.
--- In Homebrew_PCBs@yahoogroups.com, Volkan Sahin <v_sahin@...> wrote:
>
> If you use f-theta lens in front of rotating mirror this solves the problem .
>
>
> --- On Tue, 11/24/09, javaguy11111 <javaguy11111@...> wrote:
>
> From: javaguy11111 <javaguy11111@...>
> Subject: [Homebrew_PCBs] Re: Blue Laser LDI Dry Film Results
> To: Homebrew_PCBs@yahoogroups.com
> Date: Tuesday, November 24, 2009, 3:47 PM
>
>
>
> I would think using a mirror like that would cause the sides of the exposed area to not be vertical.
>
>