I love threads like these. :crackup:
peace & thanks
-cmak
Why....:thinking:
Jerry
thxnonsensical (not the case here)
why? i read nearly all threads from the last 12 months in this forum and learned a lot, but nowhere i found a post about long distance.too vague (bingo)
Are you really sure? To expand the beam is one part, but the expanded beam continues divergating. To focus the expanded beam i need a lens with focal length of 100m? I'm realy sure this one does not exist.or can be answered fairly easily
i read nearly all threads from the last 12 months in this forum and learned a lot, but nowhere i found a post about long distance.
Are you really sure? To expand the beam is one part, but the expanded beam continues divergating. To focus the expanded beam i need a lens with focal length of 100m? I'm realy sure this one does not exist.
regards
Nicole
With a Galilean beam expander you obtain an expanded or concentrated beam at the exit (all beam expanders can be used also as a beam concentrators) but with a Keplerian beam expander you can find the right distance of the focus (fixed or adjustable).Are you really sure? To expand the beam is one part, but the expanded beam continues divergating. To focus the expanded beam i need a lens with focal length of 100m? I'm realy sure this one does not exist.
Hi @all,
is it possible to focus a beam over a distance of 100m and more?
If yes, what is requiered to do so?
regards
Nicole
I have never seen anything like that. Do you know more about the used equipment? It seems to be a teleskope? Is it moified in any way? And what kind of laser is used? This looks like a fiber-bound type with any type of optic attached?
regards
Nicole
A BEAM EXPANDER! Which is exactly what Laserbee said to use.
jesus.
And wtf? Fiber-bound? uh?
The black 1,2m long part is a beam expander??? Sorry, i have never seen a device in this size. Or do you mean the optics mounted on the laser? This, of course may bee. :banghead:
What do you mean with wtf? And whats the problem with Fiber-bound lasers?
The long black part is a beam expander, yes. But you are also right: A telescope would actually work as a beam expander too.