> Peter L. Peres wrote:
> A focus lens system can helps to make a tenth off mm bright dot over the
> PCB, and if required, two disks can be installed 10mm apart, in the path
of
> the beam, with a hole with diameter a little bit less than the beam, so it
> will cutout the beam feathers.

This would disperse the beam at the edges!  Heard of pinhole lenses ?

    KreAture

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