No you are getting it wrong! UV filter , Will "Filter" the Ultra violet light. it means no ultra violet can get trough it. it is very cheap and you can find a UV filter every where. almost every camera has a UV filter to prevent ultra violet light to get through the lens.
and also there are filters that will pass only ultra violet lights, as they absorb other light waves other than UV (Other normal wavelength, not X Ray for example)
EDIT: I saw the Video,Yes it is "UV Pass Filter" it only let the UV light pass the filter. and some processes are made inside the camera so the light (or better called information) is turned into black and white color because we can't SEE UV lights.and because of the shorter wave length of UV, we can see more information and details by absorbing data from UV light reflected from skins.