A few days ago two 15mmx2mm diameterxthickness ZWB2 filters arrived. When I ordered them I did not know of a host yet with 15mm lens, and there appear very few of them! Today I rembered I had an old Romisen AAA RC-F7 (build quality=crap) with a blown switch that might be the right size. Took me half an hour to find it in my rubbish and indeed the lens diameter was 15mm. Managed to repair the switch and mod the light with a led4power 365nm led and ZWB2 filter. Used an ordinary 14mm aluminium MCPCB that I had around and the stock 1 mode little boost driver. It draws 700mA from a partly drained Duracell alkaline AAA, so there's maybe 150mA current leftover through the led. But it works fine, perhaps 1/5th the output of the BLF-A6 that I modded with the same led at 700mA led-current and 20mm ZWB2 filter, best light I have ever seen for banknotes and it is even a bit throwy because of the small die :-)
I just gave this info to Karen from Gearbest to see if they could start carrying this. With the new Convoy S2+ being released soon, this would be a popular and inexpensive item. Maybe twice the cost of a 20mm AR lens ? Banggood also has been given the info a while back.
An affordable filter and the new Convoy S2+ with Nichia UV would be a great combination. Banggood should include one for free with every one of those old stock Convoy S2 with Chinese UV emitter. If they don’t, they will never get rid of them after Simon releases his new UV lights. Convoy S2 365nm UV Single/3/7 Modes SMO Reflector LED Flashlight
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?