PROBLEM TO BE SOLVED: To provide an illumination device able to obtain light of high luminance by highly efficiently using excitation light even where a wavelength conversion rod is narrowed, and to provide an endoscope system having the same.SOLUTION: The illumination device 1 is adopted, which comprises a light source 15 configured to emit excitation light and a rod-shaped wavelength conversion member 10 configured to convert the wavelength of excitation light from the light source 15, the optical axis of the light source 15 being disposed obliquely with respect to the axis of the wavelength conversion member 10. Also, the endoscope system is adopted, which comprises an illumination device 1, an insertion part configured to be inserted into a body cavity and guide illumination light from the illumination device 1, and an imaging part configured to image an observation object illuminated by the insertion part.COPYRIGHT: (C)2013,JPO&INPIT【課題】波長変換ロッドを細径化した場合でも、励起光を高効率に利用して高輝度な光を得ることができる照明装置およびこれを備える内視鏡システムを提供する。【解決手段】励起光を射出する光源15と、光源15からの励起光の波長を変換する棒状の波長変換部材10とを備え、光源15の光軸が、波長変換部材10の軸線に対して斜めに配置されている照明装置1を採用する。また、照明装置1と、体腔内に挿入され、照明装置1からの照明光を導光する挿入部と、該挿入部によって照明された観察対象を撮像する撮像部とを備える内視鏡システムを採用する。【選択図】図1