Jetbeam Jet-UV Review

I think its better than some noname 365nm LEDs.
To compare it with other LEDs like Nichia it needs a direct comparism in fluorescense, brightness and how much visible light compared to UV light emitted.

For its size its a useful light with some UV output.

The color of the LED surface is different from high quality emitters.
When I use my camera on the Nichia emitter it shows almost no visible light off the hotspot.

imho jetbeam-uv much better then nitecore tube-uv, at least red still shown like review(above) photo.

For anything below 375nm you need glass and reflector as the plastic of a 5mm LED absorbs most of the 365nm light



Here is a comparison between jetbeam UV and a nitecore Tube UV
Jetbeam has less purple light, higher power output, more throw
Both are rated 365nm, but i think jetbeam has shorter wave lenghth

Oops, somehow my image cant be displayed

You can dramatically improve the fluorescence by filtering any visible light with a ZWB2 glass.
I filed down a 20mm glass from Simon’s store and installed it in my Jet UV.
The result is as good as my liteON 3535 SF348 with ZWB2 !

The tricky part is to be really careful while grinding the glass because, eh, it’s glass

Well, some visible light maybe not so bad

The problem is that visible light totally hide some fluorescence most of the time…
I did the test in the bathroom and the difference is huge

Well, i am not good at grinding
So, i think i will order convoy s2+ and an UV filter, more power, less effort( and more costing, sadly)

Bulkier, also. But yeah, way more powerful !
I did a shorty S2+ with 3*7135 and that is the sweet spot to have both high output and prevent over-heating of the LED. I reflowed the LED on a Noctigon though.

can we ask simon to make smaller size ZWB2 lens?

I dont like my convoy UV because it’s bulky to carry

The ideal size is 12mm diameter, so it can be used in many AAA-lights. I have not found 12mm ZWB2 filters anywhere sofar.

Chris, a tip for taking pictures of 365nm fluorescence: the camera picks up deeper into UV than our eyes do. To make the pictures more like what you really see you can take the pictures with safety googles in front of the camera, it filters out much of the UV under 400nm, so you do not see the purple glare on the pictures (that you also do not see with your eyes).

I made a 12mm and a 10mm with my Dremel equipped with a thin cutting disc (standard) and then a grinding Wheel.
Took some patience, but was about 1 hour of work for both.
The key is to make a straight cut at the surface with th disc, then trying to cut deeper. The glass will crack following the line.
You then make about 5or 6 more straight lines to make a rough round shape.
Once you have a round shape, you can finish with the grinding wheel. The key is to remove material slowly, and not over heating.
There still is some small chips on the edge, but once installed in the flashlight there are hidden by the bezel anyway.

i found some but they cost $10usd for 12mm whereas 20.5mm cost $1.5USD

dont know why smaller size cost so much but the material is much less

ZWB2 filters are extremely cheap to make, you can find manufacturers on alibaba that offer all kinds of sizes. But the demand is virtually zero, so the few sellers that do offer them on Aliexpress can ask what they like, there is no competion taking place. And there’s Simon from Convoy who has ordered a batch directly from a manufacturer (20.5mm diameter), and Gearbest ordered 20mm ones. So those are cheap.

I agree. I have both and the security strip on older Benjamins don’t even show up with the Tube-UV. With the JETBeam, you can at least make them out. On newer bills the security strip is easy to make out with the JETBeam. Does a decent job on dog piss too. My daughter just got a new puppy. :rage: :smiley:

I have a WF502b UV (395 nm, I believe). The JETBeam clearly outperforms it. Not quite as good as my UV Convoy S2+ though. Considering the power source and package size, I’m pretty impressed.

The Jetbeam UV could run a Nichia 276 UV LED at 3.8V and 500mA rated specs easily.
anyone opened one and checked how much current the LED takes?

Any idea what the UV output of the 1.5v Jet-UV AAA is, compared to the 3.7v 18650 Convoy?

Im guessing about 60% less, so
IF a Convoy outputs 780mw from a 3.7v source, the Jet-UV from a 1.5v source would proportionally produce 316mw. Sound Reasonable?

and in that case the 365nm AA Jaxman E3 UV should have similar UV output power as the Jet-UV, but longer runtime, yes?

I’m clearly no expert, but I think you also have to consider current output. I don’t know enough to know whether or not the max output of each cell is going to affect overall power output, but since watts = volts x amps, I’d think it would have to, assuming the LED could handle more power than the cell could provide. Even in the case of the Jaxman, perhaps instead of only longer run times, you have a combination of increased run time and power output?

Hopefully someone more knowledgeable will chime in?

Oh and thanks. Now I have another light I may have to buy. :smiley: