Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

Buy Site Supporter Role (remove some ads) | LPF Donations

Links below open in new window

FrozenGate by Avery

Home Made Monster Beam Expander !

I think we're both beginning to get a handle on what is really possible without breaking the bank !
 
Last edited:





Yes, we know what it will cut at 3 inches away with a G2 lens and when we can make it cut at ______ number of feet at even 4 times that beam size we have to ask, how much more is it worth to focus this any tighter, what's needed is better beam quality and a lot more horsepower.
 
Last edited:
For sure the 44 is pretty impressive with a little bit of work when i can point the hammer at the Las Vegas asphalt street and instantly make it smoke !
 
Yes, charging batteries and making work happen at a distance is very enjoyable, like many here I am hopelessly addicted to direct energy technology.

For me it's not enough to enjoy driving a car, I have to know how it works and understand every part of it. But that's part of the fun as well and when I can have a 1000 dollars worth of fun for 150 bucks I feel like I win.

Even when I understand something that I can't have I feel like I have a part of it anyway, knowledge is life, without it what would we be?

But I digress, yes lasers are very cool, well hot :D
 
+1 I couldn't have said it better ! :thanks:

We'll have to wait for EP to get back before we can put these lenses to good use, It should be about a week give or take....
 
I may mount one in a cardstock tube and test it fully before having something made, I may want to change out the concave lens as well, I tried adjusting a G2 with a 44 diode and the 3.25 aspheric and at the right G2 setting the wings went away that I was having with that attempt, I expect correcting divergence 1st is still the way to go, then maybe a smaller set, something like a 2 inch aspheric or PCX, I want to do more testing before just having a slider printed, I also have a lot of lenses, but 2 - 2.5 inches wide is about my target.
 
My relatively small jetlasers exit lens home brew work amazingly well for it's size but after the crude testing i did i'm sure the 2 incher with it's longer focal length will be even better but correcting divergence is still a must.

The 2 incher has a much greater exit lens fill which seems to help as well ?
 
Last edited:
Testing looked good but alignment must be kept squared up so I am going to make some cardstock lens holders, it's what business cards are printed on, but I'm sure you know that, I do have the heavy weight smooth paper so it shouldn't make loose fibers, so far I have used it with good results making zoom lens for M-140 and 7875's.

I'm really ready for more power, I want to cube a corrected pair of 44 beams and maybe I can find the perfect lens of 40mm or so that I could adapt to the 3X so I keep the threaded adjustment, small distance adjustments can make a big difference at the target and a threaded adjuster is sure nice.
 
Last edited:
The sanwu 3X is 2 parts that screw together, each houses 1 lens and you have a dozen or more rotations to move it's lenses apart 3/4 of an inch, so you can make small adjustments that hold, now if the sliding ratio has a longer " stroke " then it may be easy to focus to a point at distance, but the longer the distance the more fine the adjustment needs to be.

That is a 1/64 rotation has more effect at 80 feet than 16 feet, you may want 1/128 of a rotation at longer distances to fine tune the spot size.
 
RedCowboy said:
The sanwu 3X is 2 parts that screw together, each houses 1 lens and you have a dozen or more rotations to move it's lenses apart 3/4 of an inch, so you can make small adjustments that hold, now if the sliding ratio has a longer " stroke " then it may be easy to focus to a point at distance, but the longer the distance the more fine the adjustment needs to be.

That is a 1/64 rotation has more effect at 80 feet than 16 feet, you may want 1/128 of a rotation at longer distances to fine tune the spot size.
Click to expand...
Oh i get it, How are you going to use a bigger lens with it ?
 
I'm not right now, not with threads that is, I am going to test 2-3.5 inch PCX and aspheric lenses with a nubm44 and a G2 and work with the G2's focus, then with a 44 and G2 with 6X correction and the larger lenses, I will use card stock sliders for testing, once I have found what works best I will decide if it can be finished as a slider or if I need to have a threaded adjuster lens holder made.

But I have to at least use the card stock sliders, just holding the lenses by hand is very difficult to align at 80 feet.

I may also test the 4 inch aspheric with the raw diode output, but again I must make at least a cardstock holder/slider to keep the diode window clean and maintain alignment.
 
Last edited:
RedCowboy said:
I'm not right now, not with threads that is, I am going to test 2-3.5 inch PCX and aspheric lenses with a nubm44 and a G2 and work with the G2's focus, then with a 44 and G2 with 6X correction and the larger lenses, I will use card stock sliders for testing, once I have found what works best I will decide if it can be finished as a slider or if I need to have a threaded adjuster lens holder made.

But I have to at least use the card stock sliders, just holding the lenses by hand is very difficult to align at 80 feet.

I may also test the 4 inch aspheric with the raw diode output, but again I must make at least a cardstock holder/slider to keep the diode window clean and maintain alignment.
Click to expand...

You might want use the Galilean type expander instead of the Keplerian type you use now.
 
We both are using a Galilean type beam expander ?

expander.gif
 
You must log in or register to reply here.


Back
Top