Military High Power Green Laser Pointer Pen Laser Torch Battery Charger | eBay this is I have it it has VERY GOOD DIVERGENCE and it is adjustable but just glue all the pieces together to make it fixed focus
or buy on ebay.. they are cheap and mostly overspec like crazy..
So they claim they are 5mw, but what would you estimate most of them to be around?
Well I know there are several generations of eBay pens. The older ones had a full brass module while the newer ones have a mostly plastic module that is non removable. The newer ones also have a smaller silver cap while the older ones had a longer cap. (If anyone has bought eBay pens back in 2008-2009 you'll know what I'm talking about)
Early model
Late model
See what I mean by the cap? you want the older style ones. Much higher quality than the newer ones.
These appear to be the older ones with the longer cap 5mW Green Laser Pointer Pen High Power 532nm Astronomy Beam Ray Fast Shipping | eBay
Just ordered one in fact.
Best of luck!
These kind of "lasers" are about the worst quality anyone can buy....
Alot of IR and low Green light.
The only good thing about them is the low price.
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