yeah, thats probably the company ushio.
https://www.ushio.com/ushio-america-introduces-new-222nm-far-uv-c-excimer-lamp-for-microbial-reduction/
They have been available for a while now, but i don't think it has been a big manufacturing base for them, so they weren't so cheap.
I was looking into this stuff back in January cuz of the unknown fears associated with kungflu. was going to piece together a couple of helmet like disinfecting airflow using a portable hepa fan and UVC lights. thankfully, i never needed to get to that stage…
there is a ton of info here as well, from a UVC 222nm competitor that is in america.
https://sterilray.com/science/lab-reports/#micrograph