This creation is about a kind of ultraviolet sterilization device, which is mainly to make one end of the base for fixing the control circuit board and the other end for fixing the ultraviolet lamp holder. The outer end of the ultraviolet lamp holder is provided with an ultraviolet light source and the control circuit board is electrically connected. A lampshade is provided on the base corresponding to the outer cover of the ultraviolet lamp holder. The lampshade is a Fresnel lens, and a Fresnel zone is formed on the inner wall of the lampshade； thereby, the lampshade that allows ultraviolet light to pass through is a Fresnel lens. Projection is produced, so that it can perform sterilization operations with excellent light intensity within a certain distance, which not only shortens the sterilization time, but also effectively reduces the use power of the ultraviolet light source, and also reduces the overall production cost to achieve a better sterilization effect , And in its overall implementation and use, it is more practical and functional.本創作係有關於一種紫外線殺菌裝置，其主要係令基座一端供控制電路板固定、另一端則供紫外線燈座固定，紫外線燈座外端面設有紫外線發光源與控制電路板電性連接，於基座對應紫外線燈座外罩設有燈罩，燈罩係為菲涅爾透鏡［Fresnel lens］，於燈罩內壁形成有菲涅爾帶；藉此，利用讓紫外線光通過為菲涅爾透鏡之燈罩產生投射，使得在一定距離內皆能具有極佳的光強度進行殺菌作業，不僅可縮短殺菌時間，且能有效降低紫外線發光源之使用功率，連帶減少整體之製作成本，達到更佳的殺菌功效，而在其整體施行使用上更增實用功效特性者。
