PROBLEM TO BE SOLVED: To provide illuminating structure which facilitates diameter reduction of an optical observation device such as an endoscope and which can perform uniform illumination hardly causing halation, and to provide an endoscope using the illuminating structure.SOLUTION: An illuminating structure 10 includes: a light transmitting medium 11 that transmits excitation light 3 and image light 6 an objective optical system 12 disposed at the leading end portion of the light transmitting medium 11 a wavelength conversion section 14 having a fluorescent body 15 which receives the excitation light 3 transmitted through the light transmitting medium 11 and which radiates illuminating light 4 to an object 5 and a wavelength selective reflecting section 13 which selectively reflects either one of the wavelength of the excitation light 3 and the wavelength of the image light 6, thereby emitting the excitation light 3 toward the fluorescent body 15, the excitation light 3 being made incident through the light transmitting medium 11, and emitting the image light 6 toward the light transmitting medium 11 via the objective optical system 12, the image light 6 being made incident from the object 5.COPYRIGHT: (C)2014,JPO&INPIT【課題】内視鏡等の光学的観察装置の細径化が容易で、ハレーションの起きにくい均一な照明が可能な照明構造及びこれを用いた内視鏡を提供する。【解決手段】励起光3と画像光6を伝送する光伝送媒体11と、光伝送媒体11の先端部に配置された対物光学系12と、光伝送媒体11を介して伝送された励起光3を受けて対象物5に照明光4を放射する蛍光体15を有する波長変換部14と、励起光3の波長と画像光6の波長のいずれか一方を選択的に反射することで、光伝送媒体11を介して入射する励起光3を蛍光体15に向けて出射するとともに、対象物5から入射する画像光6を、対物光学系12を介して光伝送媒体11に向けて出射する波長選択性反射部13を備える照明構造10。【選択図】図1
