Newbie here.... have messed around with C02 Cutting lasers a bunch but now I am building a galvo light show with a 2w Blue diode laser.

The laser I purchased (eBay) came with a culminating lens but no prism pair or blue correction to make a straight beam.

After the culminating lens is a threaded tube 17mm Diameter for something else to go.

Any help or direction would be amazing