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Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
The sarcasm is very cute. Time teaches us maturity and to accept being "corrected" from time to time, that is what we call wisdom.
I'd like to see you burn a hole in the side of full soda cans and beer cans, shaken up of course. Maybe even a glass bottle, see if the thermal shock can cause it to explode, or if the beam just passes through.
Registered Member #2989
Joined: Sun Jul 11 2010, 12:01AM
Location: UK
Posts: 94
Normal safety glasses are cheep and some of them can cut down UV as well :) I'm impressed with the power supply part, well done. Does the voltage doubler act as a current limit / ballast for the tube?
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
As others have said, infrared light eye safety varies hugely with the wavelength.
Power for power, the most dangerous is the very near infrared, with common wavelengths between about 780 and 1080 nm. These not only reach the retina, they are brought to a focus there, while our reflex protections against suddenly dazzling light are not triggered.
Here is one official safety standard that includes this snippet:
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
It should be noted at laser powers beyond 0.5W, the diffused light from the beam hitting a white wall, metal object, or even diffraction from the air can cause damage to your eyesight. I did a serious bit of research about it as I recently purchased a 100W Greenlight laser system for a project I am working on.
You may not even know the damage is happening to your eyes until it's too late. It can take time to manifest.
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40W CO2 laser gun
