Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

>Without the reflector and beam collimation, you'll need a bigger
>globe for the same exposure time.

This is more to do with focus than collimation. Parallel rays would be
better than divergent rays but convergent rays would even be better
than parallel rays if shortest exposure time was the only goal.

--- In Homebrew_PCBs@yahoogroups.com, Russell Shaw <rjshaw@...> wrote:
>