Like others have said. It is a reverse telescope, a Galilean telescope also know as a refractor telescope. Look up Galilean laser beam expander.
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ArcticMyst Security by Avery
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- Thread starter nc9210
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Like others have said. It is a reverse telescope, a Galilean telescope also know as a refractor telescope. Look up Galilean laser beam expander.
OK, i begin to understand. And now (i read the laserglow pages) i know that the used laser is a DPSS type. The beam expander used in he video is not shown at laserglow. Is this a prototype?
As shown at laserglow a beam expander available from stock is aplicable for low distances only. I think, i try a telescope and will see what happens.
Regards
Nicole
As shown at laserglow a beam expander available from stock is aplicable for low distances only. I think, i try a telescope and will see what happens.
Regards
Nicole
Arayan
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Hey nc9210....
you will need to learn to use the internet....
Like Google search and eBay search....
New and used laser beam expander, Business Industrial on eBay.ca.....
Jerry
you will need to learn to use the internet....
Like Google search and eBay search....
New and used laser beam expander, Business Industrial on eBay.ca.....
Jerry
Last edited:
this diagram shows the possibilities:
(If not allowed to post pictures i will delete it immediately)
I've just tested a " 3x video tele attachment" with a really good result (5mm and sharp).
But the beam was not expanded, only summarized. The next days i check this item at a long distanceand report what happens ...
Then i used a binocular 8x40 but the point is not small and not sharp :-(
Regards
Nicole
PS @lasersbee
there are more items on ebay, but no one ist described especial for long distance.
Only 2 items are 10x extenders - unfortunally both galilean types ...
(If not allowed to post pictures i will delete it immediately)
I've just tested a " 3x video tele attachment" with a really good result (5mm and sharp).
But the beam was not expanded, only summarized. The next days i check this item at a long distanceand report what happens ...
Then i used a binocular 8x40 but the point is not small and not sharp :-(
Regards
Nicole
PS @lasersbee
there are more items on ebay, but no one ist described especial for long distance.
Only 2 items are 10x extenders - unfortunally both galilean types ...
Last edited:
Arayan
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It is not important that it's Galilean (almost all beam exoaders are galilean) or not as the result is the same: small divergence!
See the arrow in picture...
The laser "burning power"= (power)/3.14(beam diameter+beam divergence*distance)A2/2
The important difference between Keplerian and Galilean is the former has a longer construction length the latter a shorter length.
