PROBLEM TO BE SOLVED: To provide an endoscope light source device in which, a light guide cable on an endoscope side can be detachably attached, when the light guide cable is attached, illumination light is applied to an incident end face of an endoscope side light guide fiber bundle in the light guide cable, capable of further improving light utilization efficiency.SOLUTION: An endoscope light source device comprises: a light source a light source side light guide fiber bundle having an incident end face which illumination light from the light source enters, and an outgoing end face from which the illumination light exits and means for, when the light guide cable is attached, bringing the outgoing end face of the light source side light guide fiber bundle, and the incident end face of the endoscope side light guide fiber bundle in surface contact.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】内視鏡側のライトガイドケーブルを着脱可能で、該ライトガイドケーブルを装着したとき、該ライトガイドケーブル内の内視鏡側ライトガイドファイバ束の入射端面に照明光を与える内視鏡用光源装置において、光の利用効率を一層向上させる。【解決手段】光源と、該光源からの照明光を入射させる入射端面と出射させる出射端面とを有する光源側ライトガイドファイバ束と、上記ライトガイドケーブルを装着したとき、上記光源側ライトガイドファイバ束の出射端面と、上記内視鏡側ライトガイドファイバ束の入射端面とを面接触させる手段と、を有する内視鏡用光源装置。【選択図】図4
