PROBLEM TO BE SOLVED: To solve the problem such as the occurrence of lowering of illumination light quantity due to deviation from the optical axis of a light source when a light guide having axial deviation due to machining error or assembling error is connected.SOLUTION: A light source device for an endoscope includes: a support which integrally supports a light source lamp and an optical system for condensing illumination light radiated from the light source lamp, in which a light guide fitted to a connector body of an endoscope can be inserted, and which holds the inserted light guide at an optical coupling position where the illumination light transmitted through the optical system is coupled an intermediate support part having an elastically deformable elastic member and a casing for storing and supporting the support through the intermediate support part. The support displaces in the casing when the light guide is inserted to change the load, elastically deforms the elastic member by displacement to absorb the load, and holds the light guide at the optical coupling position in the support while keeping the positions of the light source lamp and the optical system in the support.COPYRIGHT: (C)2014,JPO&INPIT【課題】加工誤差や組立誤差等による軸ずれを持つライトガイドが接続された場合に、光源光軸とのずれに起因して照明光量の低下等が発生する。【解決手段】内視鏡用光源装置を、光源ランプと該光源ランプより照射された照明光を集光する光学系とを一体に支持すると共に、内視鏡のコネクタ本体に取り付けられたライトガイドを差込可能であり、差し込まれたライトガイドを、光学系を透過した照明光が結合する光結合位置で保持する支持体と、弾性変形可能な弾性部材を持つ中間支持部と、支持体を中間支持部を介して収容支持する筐体とから構成し、支持体が、ライトガイドが差し込まれて荷重が加わると筐体内で変位し、変位により弾性部材を弾性変形させて荷重を吸収させつつ、支持体内における光源ランプ及び光学系の位置を保ったまま、ライトガイドを支持体内の光結合位置で保持する構成とした。【選択図】図4
