US Patent 9242018 Portable light fastening assembly

A portable light fastening assembly for use with the human interface of an electronic device includes a lamp housing and an adjustable attachment device extending from the lamp housing. An ultra-violet (UV) light source is at least partially enclosed in the lamp housing such that the adjustable attachment device includes an engagement member and a receptacle housing such that the engagement member can be removably fastened within the receptacle housing for holding the lamp housing in a fixed position.