Received the second component of my future project

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Enderman
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nottawhackjob wrote:

It looks like you’re finally starting to get sumwatt more serious about this little project. LOL Shocked
I want a good cooler that would be standard for all my testing, for better repeatability Smile The NH D15 is basically the best cooler that won’t be a liquid cooler.
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Yikes! This is scary LOL

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those youtube videos does not tell you how many hours you got before the diode degrades rapidly
you overdrive the diode already and any commercial module for laser show
serious quality laser engraver has TEC cooling or does drive the diode at lower currents within specs

Enderman
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Lexel wrote:
those youtube videos does not tell you how many hours you got before the diode degrades rapidly
you overdrive the diode already and any commercial module for laser show
serious quality laser engraver has TEC cooling or does drive the diode at lower currents within specs

The 6W opt lasers engravers only have an aluminum heatsink and fan cooling it.
I’ve seen people get up to 8+ W by cooling the laser in the fridge.
I don’t think I’ll be going anywhere near that high, maybe 6-7W at most assuming the crystal doesn’t burn up at that power.
My cooling should be significantly better than what opt lasers has on their engravers anyway Smile
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CRX wrote:
Yikes! This is scary LOL

A little Silly
I’ve done a lot of research on lasers in the past but never owned a diode this powerful.
Safety first!
nottawhackjob
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Enderman wrote:
CRX wrote:
Yikes! This is scary LOL
A little Silly I’ve done a lot of research on lasers in the past but never owned a diode this powerful. Safety first!

This cat’s observations about safety dated or not sure made an impression upon me. Shocked

I think he’s not over-hysterical about laser safety across the board per se butt where he does gets serious I do believe he’s SERIOUS. LOL

http://www.repairfaq.org/sam/lasersaf.htm#saftoc

http://www.repairfaq.org/sam/lasersam.htm

http://www.repairfaq.org/sam/laserfaq.htm

And some third-party harrowing stories of laser mayhem….. Facepalm

https://www.photonics.com/Articles/Laser_Safety_Little_Mistakes_with_Big...

“In many things in order to truly understand the small picture you have to understand the big picture first.”

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Remember, it’s up to 20x as powerful as it seems to the eye (because it’s blue).

Enderman
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The_Driver wrote:
Remember, it’s up to 20x as powerful as it seems to the eye (because it’s blue).

Those goggles are OD7+ so theoretically they should reduce the 6W of laser down to 0.0000006W (.00006mW) which is safe.
That is of course assuming the laser doesn’t stay on the goggles for very long or it will burn a hole through.
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Enderman wrote:
The_Driver wrote:
Remember, it’s up to 20x as powerful as it seems to the eye (because it’s blue).
Those goggles are OD7+ so theoretically they should reduce the 6W of laser down to 0.0000006W (.00006mW) which is safe. That is of course assuming the laser doesn’t stay on the goggles for very long or it will burn a hole through.

Yes, OD7 is quite strong. This topic becomes interesting when you take into account that a laser can be focussed using an optic…

nottawhackjob
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The_Driver wrote:
Enderman wrote:
The_Driver wrote:
Remember, it’s up to 20x as powerful as it seems to the eye (because it’s blue).
Those goggles are OD7+ so theoretically they should reduce the 6W of laser down to 0.0000006W (.00006mW) which is safe. That is of course assuming the laser doesn’t stay on the goggles for very long or it will burn a hole through.

Yes, OD7 is quite strong. This topic becomes interesting when you take into account that a laser can be focussed using an optic…

In the above links I posted this Sam Goldwasser sez that laser glasses/goggles which are too restrictive are actually dangerous becuz ya can’t readily see at times where the beam is projecting, ending, etc. So the propensity is to do a quick sneak peek. That’s when apparently some of these eye injuries have occurred even from people who really know better.

It appears the more powerful the laser the proper goggle fitting process encompasses some touchy fine print.

Hey I’m just glad Endy isn’t gonna invite me over to sing ‘Candelas in the Wind’ while he fires up the scary sukkah. Shocked Facepalm

“In many things in order to truly understand the small picture you have to understand the big picture first.”

Enderman
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nottawhackjob wrote:

In the above links I posted this Sam Goldwasser sez that goggles which are too restrictive are actually dangerous becuz ya can’t readily see at times where the beam is projecting, ending, etc.

It appears the more powerful the laser the proper goggle fitting process appears to encompass some touchy fine print.


I do everything in a closed room so as long as my eyes are safe it should be ok.
If the beam is concentrated I can still clearly see where it is, and if it spreads out past the focal point it ends up being low density and not capable of starting fires.

Fires and blindness are the main two safety concerns Silly

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Enderman wrote:
nottawhackjob wrote:

In the above links I posted this Sam Goldwasser sez that goggles which are too restrictive are actually dangerous becuz ya can’t readily see at times where the beam is projecting, ending, etc.

JMO, butt I didn’t like it much when it was said to me “theoretically” when it came to deals that can jack me up as they handed it off for me to try out. Ya know, bang, bang things. Steve

It appears the more powerful the laser the proper goggle fitting process appears to encompass some touchy fine print.


I do everything in a closed room so as long as my eyes are safe it should be ok.
If the beam is concentrated I can still clearly see where it is, and if it spreads out past the focal point it ends up being low density and not capable of starting fires.

Fires and blindness are the main two safety concerns Silly

LOL

JMO, butt I didn’t like it much when it was said to me “theoretically” when it came to things that can jack me up as they handed it off to me to try out. Ya know, bang, bang things. Steve

Ok understand. Now I’m curious though about sumthing. How do you absolutely KNOW that this particular pair of glasses will protect your eyes under the power levels only you really control? I assume the supplier sez that this particular diode at this particular top power range requires this minimum level of eye protection – and presumably you believe them. Or not?

However I surmise that you may exceed that range, maybe? And if so how do you determine watt glasses covers even inadvertent mistakes?

Ok. Enuff what ifs.

PS. Fires, blindness, and loss of love life. Hmmmmm. I’m not sure this is the right sequence of priorities for me. LOL Thumbs Up

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nottawhackjob wrote:
LOL

JMO, butt I didn’t like it much when it was said to me “theoretically” when it came to things that can jack me up as they handed it off to me to try out. Ya know, bang, bang things. Steve

Ok understand. Now I’m curious though about sumthing. How do you absolutely KNOW that this particular pair of glasses will protect your eyes under the power levels only you really control? I assume the supplier sez that this particular diode at this particular top power range requires this minimum level of eye protection – and presumably you believe them. Or not?

However I surmise that you may exceed that range, maybe? And if so how do you determine watt glasses covers even inadvertent mistakes?

Ok. Enuff what ifs.

PS. Fires, blindness, and loss of love life. Hmmmmm. I’m not sure this is the right sequence of priorities for me. LOL Thumbs Up


They are eagle pair glasses which according to my research over on the laser forums are a top brand.
Based on that I would trust the OD7 rating is true.
If you search up the OD scale you will find that level 7 is a 10 million reduction, which brings my 7W 450nm laser down to less than 1 microwatt.
That’s a lot less than the 1-5 milliwatt laser pointers that aren’t dangerous to eyesight.
I think you need to be in the tens or hundreds of milliwatts to cause damage.

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