Hello the forum. Well, I got me one of these. Thought I should leave my impression of it.
The UV flashlight IS BRIGHT! Powered by one 18650 battery, when @ 4.2v tail cap current is 1.59A means UV led is drawing 6.67W (minus regulator loss). Well that's not 10W, But OK for me, Hope it is a 10W UV led, and set to run it just a little cooler, instead of a less powerful led being overdriven. The so called copper body sure looks more like a yellow brass. The knurling is nicely done, not too sharp. Threading is nice. I do not know if any write up states this, but it is not just On / Off function. This flashlight HAS TWO POWER LEVELS! Current measurement tells ALL! OFF - 1.5A - OFF - 0.5A. Did not notice in use at first, but now looking for the brightness change it is evident. OK, I like the flashlight. Mechanically it seems very well made. UV pass filter nicely blocks visible light from UV beam. BUT THE GOOGLES, BEWARE! If you want to turn your eye lenses into cooked egg white, do not trust this UV safety google. DANGER ! NOT A JOKE !!! I passed half the UV beam thru them to a phosphorescent surface, so I could compare direct UV and the googles filtered UV. Results are the google's filter only attenuates the uv beam somewhat, both sides of phosphorescent surface still glowed brightly, the filtered side somewhat dimmer than the unfiltered. . Maybe googles block 50% ~ 70% (guessing). I guess I could use / build an led radiometer. But nowhere near 99%, or the 99.99% safety googles that I just ordered. Will let you guys know have they are when I get them. Thanks
The UV flashlight IS BRIGHT! Powered by one 18650 battery, when @ 4.2v tail cap current is 1.59A means UV led is drawing 6.67W (minus regulator loss). Well that's not 10W, But OK for me, Hope it is a 10W UV led, and set to run it just a little cooler, instead of a less powerful led being overdriven. The so called copper body sure looks more like a yellow brass. The knurling is nicely done, not too sharp. Threading is nice. I do not know if any write up states this, but it is not just On / Off function. This flashlight HAS TWO POWER LEVELS! Current measurement tells ALL! OFF - 1.5A - OFF - 0.5A. Did not notice in use at first, but now looking for the brightness change it is evident. OK, I like the flashlight. Mechanically it seems very well made. UV pass filter nicely blocks visible light from UV beam. BUT THE GOOGLES, BEWARE! If you want to turn your eye lenses into cooked egg white, do not trust this UV safety google. DANGER ! NOT A JOKE !!! I passed half the UV beam thru them to a phosphorescent surface, so I could compare direct UV and the googles filtered UV. Results are the google's filter only attenuates the uv beam somewhat, both sides of phosphorescent surface still glowed brightly, the filtered side somewhat dimmer than the unfiltered. . Maybe googles block 50% ~ 70% (guessing). I guess I could use / build an led radiometer. But nowhere near 99%, or the 99.99% safety googles that I just ordered. Will let you guys know have they are when I get them. Thanks
