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​Make an optic close focus. Answered

I want to be able to put my night vision monocular in front of my 2x scope on my airsoft.

I need a combination of lenses to put between my scope and the NV to let the scope focus at a couple of inches (instead of 30 feet), and reduce magnification because otherwise I’d just be looking at a tiny part of the phosphor screen heavily magnified.

I know it’s possible because a commercial unit is available, I just don’t know if it’s feasible for a guy like me (doesn't have a degree in optics) to build (I'm thinking no, but I figured I'd ask).

Thanks for any help you can offer.



2 years ago

My gut reaction is that it sounds difficult to figure and the lenses are probably expensive.

Not sure this will do anything at all, but have you tried sticking a a camera lens backwards between them?


Reply 2 years ago

Thanks for suggesting that, I just tested it and it focuses close but it's very magnified.

I'm thinking maybe I need a concave or biconcave lens.