i doubt that they will use that materials instead cheap one
If you want to see what some people do with UV lights look at this site Nature’s Rainbows . There is a post there on the Convoy S2+ with the Nichia emitter. Honestly I think this is the light all budget UV light should be judged against. For $20 I think you should just get the Convoy and forget the others. Thanks for the review though, you never know what you will find.
Convoy S2+ 365nm: ——> too spensive, too big…
maybe one day
wle
what is wrong with TIR and 365nm UV though?
wouldn’t it have been cheaper to use a mirrored reflector, so my guess is, TIR does something desirable…?
wle
UV doesn’t pass through PMMA too well, or hardly at all.
I guess the little UV Jetbeam uses the proper material for their TIR, but unfortunately it has no filter (you know, the ‘black’ glass lens).
Do you have a link to this light?
Can’t find it on AE
the jetbeam mini uv uses reflector, not tir though
O, Okay.
I.i.r.c. Djozz has a zoomie with UV LED, i think with a plastic lens.
Thanks.
Nicron.
It’s a nice little light, also available with white LED (of course).
yes, the white one apparently has high, low and blinky modes
wle
You have a point.
On the other hand, and not meant to offend you: a light that emits more visible light than UV light is pretty useless IMHO. Read the reviews on this site, or on the site https://www.naturesrainbows.com/ . The Convoy I got came with a ZWB2 (black) filter, but you can buy them separately. It is a world of difference. This filter blocks the visible light, so we don’t have to ask ourselfs constantly, was that fluorescence or wasn’t it.
Nope, my UV zoomies have a glass lens swapped in.
Polycarbonate is hopelsss at 365nm (Carclo)
PMMA works, but blocks quite some 365nm light too (Ledil)
The OP describes a led that sounds like 365nm, or close, so perhaps a PMMA TIR is used.
all i know is, there is some visible light.
i can;t see the UV, so how would i know what the ratio is?
i do know the light gets warmish in a minute or so, so i assume there is a lot power going somewhere, i hope it;s to the UV, not just the visible part, or the heat itself…
wle
Hmmm… 1 mode would be preferable, i agree.
This might interest you perhaps, it’s on a discount at the moment:
https://www.aliexpress.com/item/-/32833403772.html
Most 365nm leds emit some white/yellowish/greenish light, that is apparently inherent to the design principle of these leds (385nm and 400nm leds do not have this). Nichia 365nm leds are better in that aspect, the amount of visible light they emit is minimal (but not absent). Compared to the invisible UV-light, the visible light is only a small part of the output, but it can blur any fluorescence that you want to see.
To get an idea of the ratio, point the light at a piece of white photocopier paper, the blue fluorescence (that is a measure of the UV that it comes from) hugely over-shines the visible light from the led itself.
Some cheaper plastics will turn brown and otherwise degrade with cumulative UV exposure.
so - given that this thing puts out a lot of bluish light, would it make sense to get a small piece of woods glass and add it to the front to filter that out?
wle
Yes that would help a lot, I have several UV-flashlights that have such a filter, the chinese version is called ZWB2 (and Schott uses UG1)
I tested such a filter a while ago for flashlight use: 2mm ZWB2 filter tested (visible light blocking filter suitable for 365nm UV flashlights)
Your title says Nicore, but link says it’s Nicron.
One of them must be wrong…