Do I need a lens?

[Roofsbyrobert]

C6 Cree flashlight host
M140 laser module

Do I need a lens? If so where do it get one/ put it?

The video I'm learning from doesn't mention one

 

[xirrious]

Yes you need a lens. Get a 3 element glass for beam specs or a G2 glass lens for up to 30% power increase with a sacrifice of divergence. I like both depending on the l applications. Also I think acrylic lenses have the best specs for producing a nice tight beam and keeping divergence down but they will not work with high powered lasers. I'd keep it under 500mw with an acrylic to be safe. They will melt.

 

[Pi R Squared]

C6 Cree flashlight host
M140 laser module

Do I need a lens? If so where do it get one/ put it?

The video I'm learning from doesn't mention one

xirrious is entirely correct about all 3 lenses. You can buy the M140 module with or without a lens. If you buy the lens separately you can get them from DTR: https://sites.google.com/site/dtrlpf/home/glass-lenses or Survival Laser USA: Lenses non US customers: Lenses or buy them from AixiZ: AixiZ Blue Laser Glass Lens for 405-455nm, AixiZ

Alan

 

[RayJay]

If you need some help with building shoot me a PM.. I can give you a hand start to finish if you want. I see you have been having some trouble from your post history.

 

[xirrious]

I've offered to build him a 501b as I have two sitting around. And I think we decided 445 with a 3e lens to match the blue anodized host. We will see though