Here is the result of my UV research on BLF.
The short answer:
http://www.manafont.com/product_info.php/taiwan-3w-380nm-uv-flashlight-dropin-module-42v-max-p-5697
https://budgetlightforum.com/t/-/15566#comment-318749
The long answer:
(Prepare yourself for some reading. ;))