PROBLEM TO BE SOLVED: To provide an endoscope device reducing the time needed for focus adjustment when performing endoscope observation of a local region of a photographic object present inside a living body as compared to before.SOLUTION: This endoscope device includes: a light source selectively changing over between broadband light including a visible light region and narrow-bands of light beams obtained by discretizing the visible light region, and emitting illumination light irradiated toward the object an objective optical system having a first lens group, a movable optical system, and a second lens group in order from the object side, and forming the image of the return light of the illumination light a drive part reciprocating the movable optical system between the first lens group and the second lens group along the optical axis, and performing focus position adjustment of the return light from the object and a detection part detecting whether or not the movable optical system has arrived at a position separated from the first lens group by a prescribed distance. In the endoscope device, when the detection part has detected that the movable optical system has arrived at the position, the light source is controlled such that the light source changes over the illumination light emitted by the light source from the broadband light to the narrowband light or changes over the illumination light from the narrowband light to the broadband light.COPYRIGHT: (C)2013,JPO&INPIT【課題】生体内に存在する被写体の局所的な領域の内視鏡観察を行う際の焦点調整に要する時間を従来に比べて短縮する内視鏡装置を提供する。【解決手段】可視光領域を含む広帯域光と可視光領域を離散化して得られる狭帯域光とを選択的に切り替えて物体に向けて照射する照明光を射出する光源と、物体側から順に、第1レンズ群、可動光学系、第2レンズ群を有し、照明光の戻り光を結像させる対物光学系と、第1レンズ群と第2レンズ群との間で可動光学系を光軸に沿って往復移動させ、物体からの戻り光の焦点位置調整を行なう駆動部と、可動光学系が前記第1レンズ群から所定の距離離間した位置に到達したか否かを検知する検知部と、検知部によって可動光学系が前記位置に到達したことを検知したときに、光源が出射する照明光を、広帯域光から狭帯域光に切り替える、又は狭帯域光から広帯域光に切り替えるように光源を制御する。【選択図】図1
