PROBLEM TO BE SOLVED: To improve, by targeting a sterilizer for sterilizing a fluid by applying ultraviolet rays thereon, the sterilizing efficiency.SOLUTION: In a sterilizer 100 including a housing 121 having a flow channel R through which a fluid provided as a sterilizing target streams and a light source 122 configured within the housing 121 for applying ultraviolet rays onto the flow channel R interior, the inner wall surface of the flow channel R possesses a pair of reflective planes 111 and 112 for directing the ultraviolet rays applied from the light source 122 from one to the other sides of the flow channel R while reflecting the same on multiple occasions, whereas ultraviolet-permeable layers 113 and 114 formed by a component having a refractive index virtually equal to the refractive index of the fluid provided as a sterilizing target and transmitting ultraviolet rays directed toward the reflective planes 111 and 112 and ultraviolet rays reflected by the reflective planes 111 and 112 are configured respectively atop the reflective planes 111 and 112.COPYRIGHT: (C)2014,JPO&INPIT【課題】紫外線を照射することで流体の殺菌を行う殺菌装置において、殺菌効率を向上させる。【解決手段】殺菌対象となる流体が流れる流路Rを有するハウジング121と、該ハウジング121に設けられ、前記流路R内に紫外線を照射する光源122と、を備えた殺菌装置100において、前記流路Rの内壁面が、前記光源122から照射された紫外線を複数回反射させつつ、前記流路Rの一方側から他方側に向かわせる一対の反射面111,112を有し、且つ、前記反射面111,112上に、殺菌対象となる流体の屈折率と略同等の屈折率を有する部材で形成され、前記反射面111,112に向う紫外線及び前記反射面111,112によって反射された紫外線が透過する紫外線透過層113,114が設けられている。【選択図】図3
