Be careful with the DPSS type of green lasers. They can put out powerful infrared along with the green.https://www.skyandtelescope.com/astronomy-news/observing-news/green-lasers-a-hidden-danger/
On Monday, October 8, 2018, 8:48:20 AM MDT, Roland Jollivet <roland.jolli...@gmail.com> wrote: Has anyone here definitively worked on one of those chinese green LED lasers, 1W - - - 10W I'm wondering on the practicality of collimating the beam to a ~ 0.2mm spot using a dual lens. For surface marking. I know the emission is asymmetrical, but you can work on the major axis and then mask the rest. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users