LPF Site Supporter
- Jan 29, 2014
Rare as hens teeth, I agree, I bet there isn't another one. Good find on ebay!
I'm nearly certain this will be the first UV laser pointer ever built! I only have one shot though, and every time I have to solder to that laser diode I get very uneasy!!That will be one exceptionally rare pointer---probably the only one.
Good luck--looking forward to it happening---be careful.
Long term exposure to high intensity UV-A light probably wouldn't be great for your eyes, but otherwise it should be fine. UV-A is non-ionizing and as a result non-carcinogenic.Is 375nm long enough of a wavelength not to cause any health concerns to us? This question is for the future, when these diodes will cost $5 on eBay lol.
Seriously though, I know 375nm is UV-A but still....
Got it! Anything <300nm though is uber-dangerous territory then, right?You can't ionize any atoms in tne ground state till a bit over 300nm. So 375nm is not ionizing radiation which is the most harmful. Still though, 375nm is in a range where it has the very real ability of promoting electrons to high energy molecular orbitals, which can initiate chemical reactions that wouldn't occur on their own. So in theory there still is a risk, but IMO you would be much dumber to step into a tanning booth than pointing this at your arm.
Got it! Anything <300nm though is uber-dangerous territory then, right?
"The electromagnetic spectrum of ultraviolet radiation (UVR), defined most broadly as 10–400 nanometers, can be subdivided into a number of ranges recommended by the ISO standard ISO-21348"Got it! Anything <300nm though is uber-dangerous territory then, right?