Recently bought a stupidly powerful handheld laser, in the 3 digits of wattage.

I tested it once, and its horrifyingly strong.

Im looking at safety googles and i have found some, but how do they work? Do they reflect the beam?

Absorb it? Which means melting glasses... In that case does one have alot of time to realize before there is a hole in them AND my eyeball?

Also if they reflect, wont that be a fire hazard?

Might be stupid questions, but eyesight is the one sense i got in excellent condition, and i want to keep it that way haha

Hi, I recentely wanted to try and get a laser pointer, thought it would be cool to just have one and shine at shit outside.

I really like the ones where you can see the actuall beam faily clearly on in a "dim" room.

I was wondering if there was a semi cheap laser that has a very visible beam that also isnt going to be able to damage eyelids with reflections/an accidental bust of light.

Thanks in advance.

V4 UPDATE: VCSEL-less low-cost alternative added to same Zenodo record.

What changed:

- V2: 240x PLPVY1 940nm VCSELs ~55k TL BOM

- V4: 240x ML101J27 TO-5.6 EELD 650nm 200mW hobby lasers - 30 TL each = 7,200 TL total BOM. Generic 650nm 5.6mm 200mW diodes also work.

- No 940nm diffusion tail issue

- Driver: LFE5U-45F -> UCC27511ADBV R -> AO3400A SOT-23 MOSFET + series resistor, no level shifter needed

- Same: OPA858 TIA, AD9226 12-bit ADC, FDS010 photodiode, IS42S16320 SDRAM, FT232H

Performance: 120 bit-MAC / flash, 25ns optical pulse, 64x64 latent (512x512 image) in 5.8 min (4-step LCM), 2.9 min with 4 boards x 480 lasers.

Files: V4.pdf + V4-Fiyat_Link_Görsel.pdf added to same DOI

VCSEL-less Photonic Accelerator V4 - LIVE!

🚀 Hackaday: https://hackaday.io/project/207075-vcsel-less-photonic-accelerator-v4-240x-ml101j27

💬 Reddit (853 views): https://www.reddit.com/user/Vcsel-Photonic/

📊 Zenodo DOI: https://doi.org/10.5281/zenodo.23369898

💻 GitHub: https://github.com/yasarhotmailes/vcsel-photonic-accelerator

240x ML101J27 @ 30TL = 7,200TL vs V2 55k TL (87% cheaper)

25ns flash, SD1.5 512x512 in 2.9min with 4 boards

Files: V4.pdf + BOM (914KB)

#photonics #VCSEL #EELD #FPGA #StableDiffusion #hackaday

V2 files still there (5 files total now). CC BY 4.0

Question for optics folks: For 650nm collimation, f=4-4.5mm aspheric on 100x20x10mm Al bar drilled - any cheap collimator source you recommend for TO-5.6?

Currently, it's in a very rectangular beam that is fairly wide, I want to concentrate it into a tighter beam for more burning power, and change the plastic collimator (I don't know this for a fact, but a thorough review on the page says it has a plastic one and recommends replacing with glass). It's maybe, 3/16 inch wide, a little under a quarter inch, but more than an eighth at the focal point. If I can just bring in the overly wide axis, especially with a focusable mechanism of some sort, I'd be so happy.

I just don't know all what I need and what size exactly. I know about laser safety, and I have high end NoIR goggles (which I put on before even inserting the battery into my pointer), don't worry, but I don't know as much about the specific pieces/construction to help that beam pattern.

Side note, if you want a 5W (people say it tests around 3-3.5W) blue burning pointer... look up 450nm laser diode on aliexpress. It avoids the power rating in the name, so it's named like T-5000 or something along those lines. Just get real goggles first, not cheap amazon junk (I returned my freemascot goggles, because they claimed to block UV but my UV flashlight was blindingly bright even with them on, so... yeah no lol).

I have two of these laser control modules and I wanna repurpose them, but I can’t find a schematic or pin layout anywhere, I know it’s made for a very powerful laser but I just wanna repurpose it for some weaker ones

V4 UPDATE: VCSEL-less low-cost alternative added to same Zenodo record.

What changed:

- V2: 240x PLPVY1 940nm VCSELs ~55k TL BOM

- V4: 240x ML101J27 TO-5.6 EELD 650nm 200mW hobby lasers - 30 TL each = 7,200 TL total BOM. Generic 650nm 5.6mm 200mW diodes also work.

- No 940nm diffusion tail issue

- Driver: LFE5U-45F -> UCC27511ADBV R -> AO3400A SOT-23 MOSFET + series resistor, no level shifter needed

- Same: OPA858 TIA, AD9226 12-bit ADC, FDS010 photodiode, IS42S16320 SDRAM, FT232H

Performance: 120 bit-MAC / flash, 25ns optical pulse, 64x64 latent (512x512 image) in 5.8 min (4-step LCM), 2.9 min with 4 boards x 480 lasers.

Files: V4.pdf + V4-Fiyat_Link_Görsel.pdf added to same DOI

VCSEL-less Photonic Accelerator V4 - LIVE!

🚀 Hackaday: https://hackaday.io/project/207075-vcsel-less-photonic-accelerator-v4-240x-ml101j27

💬 Reddit (853 views): https://www.reddit.com/user/Vcsel-Photonic/

📊 Zenodo DOI: https://doi.org/10.5281/zenodo.23369898

💻 GitHub: https://github.com/yasarhotmailes/vcsel-photonic-accelerator

240x ML101J27 @ 30TL = 7,200TL vs V2 55k TL (87% cheaper)

25ns flash, SD1.5 512x512 in 2.9min with 4 boards

Files: V4.pdf + BOM (914KB)

#photonics #VCSEL #EELD #FPGA #StableDiffusion #hackaday

V2 files still there (5 files total now). CC BY 4.0

Question for optics folks: For 650nm collimation, f=4-4.5mm aspheric on 100x20x10mm Al bar drilled - any cheap collimator source you recommend for TO-5.6?

Looking for a very bright laser measuring tool. Something handheld maybe even pocket worthy.
I do a lot of measurements in day light and my laser can’t get a reading consistently.
Hopefully someone has a great recommendation on a bright laser measuring tool.

I was helping a customer and accidentally i passed over it and it HIT my eye for 1 second. I was so close to it. IM SCARED TO DEATH. is it dangerous?

Hola, estamos buscando un marcador para la empresa y queremos informarnos antes de hacer ninguna inversión.

El láser es para un uso industrial. Para marcar piezas de metal.

Tenemos vista la marca de Telesis de la cual nos han hablado muy bien pero queremos tener más información.

¿Alguien ha utilizado los marcadores de Telesis a nivel Industrial y nos puede dar su experiencia y si ha tenido algún problema con ellos?

Essentially I want to combine photoluminescent paint and map a lazer on a canvas but I do not want to lose the other color and spectrums. My research has shown the 405nm aren't venue safe obviously. The traditional 450nm blue allegedly creates the tracing effect but not as rich. Anyone have any ideas? I'm not necessarily looking for this to be venue safe more an art installation project idea I've had for a few years. I'm new to lasers but understand resolume and video signal flows.

I just got a new 500W air-cooled handheld laser cleaner. I’ve seen friends use laser cleaning for rust removal, paint stripping, and cleaning metal parts, but I’m also curious about its less common applications.

If you had a laser cleaner in your workshop, what would you use it for? If you’ve already used one, what tasks has it been most useful for?

I’d really like to hear what everyone actually uses it for.