2mm ZWB2 filter tested (visible light blocking filter suitable for 365nm UV flashlights)

Hmmm… a triple with filter…. that sounds interesting. You have a build in the works?

no, i dont have parts ,but it will be a nice to illuminate a big area with such flashlight.

Yes that would be noice :santa:

Anyone know a good source for AA size? Like the thorfire tg06? Is that 15mm?

AA size almost always is 18mm. I have a 15mm ZWB2 filter and found just one flashlight in which it fits (an ancient and badly built Romisen) Most AAA flashlights need a 12mm filter which I did not find anywhere, and the 10mm filter that I ordered 2 of (but received just one ) fits in hardly anythinh, but it does fit the Singfire (BLF) 348, which should make a slick little 365nm light.

need one around 700mm for a snapon uv leak tracer.and to mod it to led.heat from the halogen cracked this ones lense.
i assume these are just woods glass?

Oh darn. So I have to buy a Jaxman E2 to get an AA UV light? I built one without the filter. It worked but there was way too much visible light.

Nice review of these filters, thanks.

I got my filter today and for some reason thought it would be plastic, only realised it was glass when i tried to cut it with a hacksaw :blush:

I ordered this for my UV Ti which has a 12mm window.
Not going to be as easy as i thought modding this, so out with the diamond disc dremmel instead.

Took some careful time grinding but i got it in the end :slight_smile:
Looks cool with the dark glass and does make a difference in visible light output.

Nice work on that filter! I hope you did not breath in the glass dust to much?
What UV-led is in that Ti now?

No, and i even wore safety glasses. I bought the emitter from Ali ex ages ago, just a cheap one to try out.
I can’t seem to find the one i bought but it is one like this

I used the piece i had left over to stick on my Mecarmy SGN3. It’s borg ugly but it works.

The filter can be bought at simons shop
https://www.aliexpress.com/store/group/glass-filter/330416_507487979.html?spm=2114.8147860.0.0.xE874k

Works great with Nichia UV LED
Both pictures with same camera exposure the filter kills almost all visible light

The one at Simon’s shop is 20.5mm diameter while the ones from Gearbest are 20mm, so Simon’s version fits the S-series Convoy even a bit better.

What about 365nm LEDs ?
Does anyone have a good source (apart from LED4POWER) for a good quality UV LED ?

This led has great 365nm output but will need the ZWB2 filter because it produces quite some yellow-ish light as well.

Test here: An effort towards a repeatable test method for UV-leds. New tested: 3535 365nm Liteon led, 5050 (XM-size) 2.8A Epileds 400nm led

A little late to this thread, but just in case anyone is still around….
I noticed a significant amount of reflection from the ZWB2 filter. Did some investigating into AR coatings and got back ridiculous prices. So I emailed Simon and he said the factory could do it at a very reasonable cost.
Any thoughts? My research shows that a 10% to 20% improvement in output might be expected….

I’m around :slight_smile:
That is a lot of improvement, so reflection on the glass surfaces from UV is worse than with white light, and so there is more to fix for the AR coating!

Nice of Simon that he is willing to do that, I’m certainly in for some of those if the price is reasonable, AR-coated ZWB2 filters should look cool too btw.

He quoted $3.83/ea which is the same price he sells two of the non-coated filters for now. He says they need to be produced (manufactured) and will get back to me. Will keep you informed

Here’s a graph showing one company’s projected improvement

That would be cool, what would be phenomenal would be to get some 12mm & 10mm sizes made too.

^

And SRK/Maglite size. I want to make a UV multi-emitter.

Also, interested in the A/R coating aspect, but different sizes more.