USB camera for $135 from a company that know what they are doing with UV imaging.....
https://maxmax.com/shopper/product/15903-xniteusb2s-uv-usb-2-0-megapixel-hd-monochrome-camera-uv-only/category_pathway-9506
I suspect the camera is actually a pretty standard monochrome sensor array that does not use micro lenses and has no IR filter fitted.
Bit of warning with this company. This camera they have is a UV-passing-filter modified version of their standard "monochrome" camera. I can tell you right now though it is not monochrome. I bought their full-spectrum monochrome camera (only modification was full-spectrum, by replacing the IR-blocking filter with clear glass), with intent to tape on external filters over the lens. When I got it in the mail, my first check was to plug it in and use software to view the camera's level's controls (brightness, contrast, etc). When you turn up the saturation, you get a normal color image. So this means that the CFA is still in place (complete with its ability to degrade wavelengths outside the visible spectrum). What SHOULD have happened is when moving the saturation slider, there would be no change in the image.
So these cameras simulate being a monochrome camera by just having the saturation setting in their firmware set to 0, but that is easily adjustable with any VFW or DShow webcam software that lets you adjust the device's software controls like saturation. Needless to say, I returned the camera and got a refund.
In my email explaining the situation asking for the refund, I learned something interesting from the guy there. These cameras are NOT manufactured from the ground up by MaxMax. MaxMax is simply selling cameras made by another company. And on their website they clearly are a Chinese company that makes cheap products of questionable quality. It does not surprise me at all, that in order to make a cheap monochrome camera, they just reconfigured the firmware settings on a color camera, instead of spending more for a true monochrome CMOS image sensor (these cost more because they are not as popular as color CMOS sensors, so fewer get manufactured, and thus they are more expensive). That's just the kind of stupid stunt that crap-quality corner-cutting Chinese companies tend to get involved in.
I just wish MaxMax vetted their equipment sources better, since MaxMax does seem to be a legit company, not a Chinese cheap knockoff making company.
So I would NEVER recommend any of the cheap UV (or IR, or full spectrum) cameras coming from MaxMax. This Nurugo SmartUV cellphone attachment looks more like what I would recommend, as it is a purpose-built UV camera, made from the ground up via a Kickstarter (and now with their own official website).