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  1. M

    light "artefacts" or bad focus with G8 lens?

    like i said, all the other lenses i got are better in this regard. its basically all cheap lenses that came with moduls or prebuild china lasers. Now i got that 18 eu G8 lens and it shows more of this stuff than any other lens.
  2. M

    light "artefacts" or bad focus with G8 lens?

    its a Nichia 5,5 watt recapped diode, 450nm. So that doesnt automatically prove that the lens is garbage? The lens stays cool....the other ones i have feel almost like the glow, that hot after just a few seconds.
  3. 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...
  4. M

    The ABSOLUTE Cheapest Proper Diode driver

    im using a Led-driver for 4eu from Ali, it does 3A...seems pretty reliable so far. It also has very accurate output-control, because you have to screw that wheels like 10-15 times to get from 0 to 3000ma. Cheapest driver i found so far...still have a bunch in my shelf to try.
  5. 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...
  6. M

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

    so im an impatient noob so i just tested the version with USB cable...wow i never had so much Voltage on the battery, it tops at 4,22Volt usually. When i de-hooked the battery after 130min, it was very warm. Did i risk anything? Yeah i know im a noob XD
  7. M

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

    well the markings must mean something theyre not there just like that? edit: @Mattronium? reverse breakdown voltage? Is that always in the specsheet? cause it doesnt ring a bell. So what voltage do you mean, i can only hook 1 or 2 cells on the driver. Or do you mean hooking it on a naked...
  8. M

    Focussing Nichia diodes with ball-lens?

    well a box didnt cross my mind yet...:) im more focussed on something with a trigger, a miniature handgun, not oriented on a real one, but some kind of space gun design. A tiny shiny gun thats so small you can almost hide it with one hand but still packs a 6w beam coming out of a G8 lens wouldnt...
  9. M

    Focussing Nichia diodes with ball-lens?

    Ok i think ill remember it next time i see some glass balls anywhere :) Right now im looking for inspiration how and of what to build the host für my new laser. Not the usual tube-hosts, but something more individual. I have no CNC or anything in the direction, also no 3D printer so im limited...
  10. M

    Focussing Nichia diodes with ball-lens?

    so after no one could assured me nothing goes wrong i took some risk and made contact to the diode with thermal paste..i used some common sense and was lucky this time XD im gonna add some pictures, maybe someones interested in this cheap mod. pins are covered in a shrink tube, i used lots of...
  11. M

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

    well thanks thats good to know...seems ive been lucky this time, i just hooked it up and it works, man thats a wonderful diode..i set the driver to only about 600mA because i havent finished the modul yet and already its very bright
  12. M

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

    ok thank you...that was my first impression, right pin is neg. If you have the pins on the lower side. But the rest of datasheet confused me. Also i associated the longer line with cathode and shorter with anode...i thought that might be the meaning. Unfort., i still havent found the datasheet...
  13. 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...
  14. M

    Focussing Nichia diodes with ball-lens?

    so today finally my recapped 5,5W Nichia arrived..along with an 500mw IR. Im about to build some extra heat-transport ways for the diode. yeah i know there are better casings than mine, specialized for higher powered Diodes. I did, however, already order all that crap and now its here and im...
  15. M

    Focussing Nichia diodes with ball-lens?

    well good for me, i didnt really know what i was doing when ordering that diode XD..i just assumed that 455nm looks nicer than 440nm from the Sharp diode. That was the only reason i chose this one. 480ish 5w would be perfect though.
  16. M

    Focussing Nichia diodes with ball-lens?

    maybe should have recorded thatmon video...my supplier in china didnt even send the package yet. I hope he didnt go bankrupt XD I also found some material for my laserpointer host, it might even be the same one some Chinese use for their all-in-one-lasers, at least it looks very similar...
  17. M

    why are there no strong 532nm diodes?

    oh thx for that kind words. Maybe you could extend that kindness and underline the aggressive comments that i have commited. It might help me with my self-reflection and recovery. Thank you.
  18. M

    why are there no strong 532nm diodes?

    Cowboy i didnt say i love chinesium, You said, that a FAC and a G8 lens is for close up work only and you will need a bigger lens for across the room. And i said, that would be kind of disappointing because already my chinesium does good on close up work. I would expect at least 5-6m from a FAC...
  19. M

    why are there no strong 532nm diodes?

    Cowboy, can you tell me something about additional cooling for strong diodes? Dont want to open another threat already..i realized, even when the diode is in a copper casing with an outside heatsink, theres still a lot of free surface area an the back of the diodes, where the pins come out. I...
  20. M

    why are there no strong 532nm diodes?

    well you say only across the room work, honestly ive been able to ignite things with a small spot over the room with a 1,6w 40eu laser from China that comes with a 70 cent plastic lense. Now my room isnt huge, were talking 3m to 3,5m distance maybe. Spot is still small enough to make my wooden...




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