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Recent content by Milos

  1. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Flexing is not an issue. But as I said, choose your own particular ruler. There are a lot of different thicknesses and widths that can accommodate your setup. I say there is no flexing because you will cut the ruler to only 5-6cm long, at which length you are already pretty stiff to begin your...
  2. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Hi Cenobite9 you can get them on Amazon in different widths, lengths and increments. I wouldn't pay more than 10$ for one. Better ones you can buy from machine shop stores. here is an example of super cheap pair from Amazon...
  3. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Nice. I've ordered some more glass to test. I have to try two more combinations before i settle. Hope they come today or tomorrow so I can test tomorrow evening at work.
  4. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Yes, its still with NUBM44 diode. The extension with anamorphic cylindric lenses is being redone now. The first time when I started this thread I did bunch of tests but never closed the assembly and called it a day. Now I hope to do it finally. Too bad no new more powerful diode came in the mean...
  5. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Nope, same setup. Flat sides facing eachother. Makes it easier to align quickly yet manually. I thought I did and I believe i mentioned it on the first two pages of this thread. Its been a while. However, I might have been experiencing missalignment or simply not an optimum distance which...
  6. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Yes, I have a good way of monitoring the alignment of the beam as I'm setting up the glass. My two cylindrical lenses are now solid in place. All that considered, the final plano-convex lens in the front is the one I need to get in perfect position. With OPT thicker lens it seems to be much...
  7. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Very nice. Thanks. Now how do you get the measurement of 4mm? The best way in my opinion is to place metric steel ruler. like the one you and I use for setting up lenses, and place it in front of the output of the laser, and tilt it so you get the beam to go over it and line up with millimiter...
  8. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    So one setup is 3x+4x (combining a 3x from OPT lasers, and a 4x from Lasershow Parts) plus focusing lens in the front. The second is only 6x plus focusing lens. I assume second setup is shorter as assembly overall. Did you measure it in comparison by any chance? Which produced better...
  9. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Nice work Accuronitis! Nice to see you took over with experimenting and are contributing for everyone. What is your lens setup used to make that burn mark on wood at 65feet on the last photo. Also what power output are you set to? thanks
  10. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Thanks. I checked the beam throughout the path from laser to 10m wall and it only slowly diverges at 0.4mRad rate. No converging.
  11. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    So after having now tested 6x, 9x, 12x and an 18x squeez of the NUBM44 diode beam coming out of the G2 lens, the clear winner is a 12x setup combining one OPT Lasers 3x Plano Concave lens flat back to flat back against one 4x Plano concave lens from Lasershow Parts, and correcting this beam with...
  12. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Ok, here is the setup I used combining a 3x from OPT lasers, and a 4x from Lasershow Parts. Basically it gives the best squeeze of the beam for this diode out of all I tested so far. I tested them with Lasershow's, and then with the OPT's plano convex lens on the front. Here is setup with...
  13. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    After long delay, ( working on it about 1.5h per week or per two weeks) I had major sucess, and most likely a final setup I will stick with. I'm getting 0.3-0.5mRad !!!!!! Here is a nice shot I tok on the end of the experimentation session on Friday. I will post more results and photos of the...
  14. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Thats cool. No, I'll stick with what i have for now. I have 4x squeeze lens coming in and this is is. I am looking forward to test it with my OPT Lasers 3x and 2x lenses and produce 12x squeeze. I can't wait to see the form of the beam at this ratio. I will be able to do a 16x test as well...
  15. Milos

    OPT Lasers Cylindric lenses - NUBM44 beam correction tests

    Thats nice. Do you mind checking power output and if it is indeed as good as the G2 from DTR shop? Also, could you project the line at distance X (something like 5 or 10m) and measure the length of the projected line. Kind of like what i did at the beginning of this thread. Photo would be nice...




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