PROBLEM TO BE SOLVED: To enable tone change of illumination light while observing without complicating the tip end structure of an endoscope body.SOLUTION: An endoscope 11 is provided with: a light source (light-emitting element 13) emitting specific wavelength light an optical part 15 for condensing light from the light source different fluorescent bodies (a fluorescent body A17 and a fluorescent body B19) functioning as a plurality of layers which convert light output from the optical part 15 so as to have wavelengths different from one another an illumination fiber 21 to which the light output from the fluorescent bodies is incident and a condensation position control part 23 making the optical part 15 and the fluorescent bodies relatively move so as to condense the light output to either of the layers of the fluorescent bodies from the optical part 15. The condensation position control part 23 relatively moves the optical part 15 and the fluorescent bodies along the light axis and thereby switches a focal point 59 to any of the fluorescent bodies of the plurality of layers.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】内視鏡本体の先端構造を複雑にすることなく、観察しながらの照明光の色合い変更が可能となる。【解決手段】内視鏡11において、特定波長光を発光させる光源(発光素子13)と、光源からの光を集光させる光学部15と、光学部15から出射される光をそれぞれが異なる波長に変換する複数の層となる異なる蛍光体(蛍光体A17及び蛍光体B19)と、蛍光体から出射された光が入射される照明ファイバ21と、蛍光体のいずれかの層に光学部15から出射される光を集光させるように光学部15と蛍光体を相対移動する集光位置制御部23と、を設けた。集光位置制御部23は、光学部15と蛍光体とを光軸に沿って相対移動させることにより複数の層のいずれかの蛍光体に焦点59を切り替える。【選択図】図1
