- May 27, 2013
How would I get it to 5mw though? It would be sweet if a weakening lense was out there. Don't acrylic lenses take 20-30% away. At 17mw it would limit it to like 11.1 or something like that.
I made a single mode 450nm pen running at 100+mW. Using a cardboard with a pinhole about 0.5mm diameter ('drilled' with a 1.4W in focus) inserted in the cap restricts the output power to 5mW (LPM'ed) to be safely used at presentations. Remove the restrictor for full beam visibility when used outdoors.