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

Thanks for supporting LPF!

Avery's Instagram | Open Source Cybersecurity Software by Avery | Considering selling LPF, DM if interested

Search results

  1. M

    light "artefacts" or bad focus with G8 lens?

    Hello, excuse that bad foto please, i used a long shuttertime and the pic did get a bit too much light. Its about that blue area, that i encirceld red. Some amount of light seems not to be focused, but its leaving sideways and appearing around the spot. The spot itself is pretty small like you...
  2. M

    cant find a datasheet of my diode?

    hi, i have problems finding the sheet of my diode...id like to know how much ampere i can adjust on the driver. I bought the diode under the name "NICHIA NUBM0E" from ali... https://de.aliexpress.com/item/1005003440660852.html?gatewayAdapt=glo2deu&spm=a2g0o.9042311.0.0.27424c4dw1I87d theres no...
  3. M

    Can you find out the polarity of a diode without datasheet?

    Hello men, i just "found" these markings on my new Nichia NUBMOE 5,5w Laser diode..i never realized they were there until now. Do this lines, maybe, give information whats the anode and what is Cathode? I must say i still have troubles getting sure what the polarity is. The usual datasheets...
  4. M

    a try to repair a driver.

    Hello folks. I accidently damaged a nice laser driver. Instead of a diode i hooked a small 5V electromotor on it, i wanted to see if it makes a good testload. View seconds later theres was a little smoke and the black part with the 8 pins came off, obviously its soldering points got too hot and...
  5. M

    Looking for a certain laser host i saw on Ali.

    hello people, i found a pretty nice host on Ali Express..now i know they are never great quality, but they dont have to be, im just looking for a few nice hosts to put different diodes in. That copper host, ive only seen being sold as a complete Laser, never the Host alone. Ive also wrote to 3...
  6. M

    why are there no strong 532nm diodes?

    Hello men, i was just shopping around on Ali Express and realized that there literally are no strong 532nm diodes. I remember years ago when somebody explained me the first time a few things about green lasers, that the 532nm DPSS diodes(or modules) are cheaper than the "real" green diodes...
  7. M

    Focussing Nichia diodes with ball-lens?

    Hello men, I just learned how to safely put together a laser, now i wanna go on and build a more serious laser. Im planing on buying a cheap but powerful blue diode from Nichia, something around 5 watt. Now im not sure which host to use, maybe come up with an own creation, but i wanted to focus...
  8. M

    any "serious" way to focus multiple beams to one?

    Hello, ive asked myself if there are any methods available to bundle all the beams from an array to 1 single. So far ive only seen the styropyro-way. Sure it must be possible with enough lenses (and maybe a parabolic mirror)of the right kind? Still i havent seen any device so far that can do...
  9. M

    any difference between a "Laser diode driver" and a regular "step-down/buck"?

    hello, ive just been searching for drivers on aliexpress and realized. whenever a circuitboard is sold as Laser diode driver, its much more expensive than a regular buckconverter or stepdown-power supply. If it doesnt include laser driver in the title, its much cheaper. So im asking myself if i...
  10. M

    good method/tool for wiring diode pins?

    hello, i just figuered out that it can be pretty tricky to attach a cable to the diode pins. How do you guys do that, with a regular soldering iron? I tried to look for some kind of wire connection/terminal, but i cant find anything with such a small diameter. Pins diameter seems to be about...
  11. M

    looking for a DIY Kit/Tutorial for a 5 Watt Blue Laser.

    Hello folks, as you might have seen from my other post i have some sort of problems building together my own laser. I have the issue that i couldnt find any real good tutorial yet. The powerful 450nm diodes like the NUBM49 are not expensive at all, but i dont wanna ruin such a diode by...
  12. M

    need help with repairing/rebuilding a Laser please :)

    Hello friends. few weeks ago my 1600mw blue laser went down. It was a prebuild Laser for 50eu from china and actually quite decent. The diode suddenly only put out half its usual power, also the spot looked weird, not like it always did. Tried different batteries, no sucess. Now i want to take...
  13. M

    changing diodes on prebuild lasers from china

    hello, i finnaly wanna have a strong green laser. I have a "trusted" laserpointer seller fom china from which i already bought several Blue lasers. The pricing is fair and all lasers still work. He also gave me always honest infos about the power output. Unfortunately, his pricing for 1W green...
  14. M

    some basic questions on drivers

    Hello guys, im just looking through different driver options and there are some upcoming questions...for the case that the answers to my questions are to be found somewhere in this forum, i beg your pardon...scanning a forum for the answers might be possible, but timeconsuming sometimes, also...
  15. M

    why do Laserbeams stop "suddenly"

    hello, ive asked myself a couple of times, why my Laser has such a short beam....the strongest one i have is a 1500mw Blue Laser, now i cant say how long the beam is, might be 2km or only 500m, its hard to tell...in any case, the beam suddenly stops, it doesnt get weaker or thinner, its bright...
  16. M

    where can i buy a complete Laserhost for 2x16340 battery?

    Hello guys, i deceided i want to build my own lasers now instead of buying complete ones. Thing is they are very overprized in EU and US and if you buy in China, you can get some pretty good deals but its hard to find anything more powerful than 1500mw blue lasers... So what i have in mind is a...
  17. M

    building a 5W laser with a Laser that comes with a 12V PSU

    hello, id love to post a link here but im not allowed yet. Ive spotted a 5W Laserdiode inc. a big black heasink with fan and driverboard is already attached, a 12V Powersupply also comes with it. For sure you are familiar with this lasers, they are sold for this carving/burning/cutting machines...
  18. M

    9V battery mod?

    Hello, excuse me for making my 4th thread on my 1st day, but ive got a lot to ask and i dont like to put all in 1 single thread. I was wondering how convenient it would be if we here in Europe could just use the regular 9V batteries. The have a little bit more power, you can get them...
  19. M

    messing with potentiometer on Blue Laser?

    Hello, i screwed off my new 1500mw Blue Laser for the purpose of putting some Thermal paste between the diode and the casing and on the winding. i got excited when i saw the little potentiometer on the driver circuit, because i saw on Youtube that the power can be increased pretty...
  20. M

    Lasers and broken camera sensors.

    Hello guys, i was just sitting in my chair and thinking about doing something positive again and suddenly a thought came up, what would happen if you hold a powerful laser beam into a surveillance camera? Wouldnt the sensor die instanly?that would be a great way to sabotage the upcoming...




Top