Beam Expander DIY Cons

[isaacpeh]

What are the cons of using a monocular as a beam expander ?

Ive seen some threads on those who use Monoculars as beam expanders and it seemed like it worked well for them .

But does it really take up a lot of light and power? How is it compared to a real Beam expander?


PS. They took of the PRISMS (?) in the monocular and made use with the 2 lenses in the monocular. Wondering if it works with this

 

[Alaskan]

Problem is, unless someone here has purchased that same unit and found they could remove the prism without too much trouble, you won't get the answer you seek. I bought another one somewhat similar to that and left the prism in but the loss was far too high, I could really see a much dimmer beam. It should work either way, just dimmer if you can't get it out.

 

[joeyss]

I got a decent 8x one thats focsuable and lets most of the laser light through.