PROBLEM TO BE SOLVED: To provide an endoscope device which can modify a focal distance accurately and is easy to downsize.SOLUTION: An endoscope device including an imager 22 capturing an object through a lens group including a moving lens 20 comprises: a moving lens support unit 13 shifting in an optical axis direction with shift of the moving lens 20 and a moving lens drive unit 14 driving the moving lens support unit 13 in the optical axis direction. The moving lens drive unit 14 is provided radially outside the moving lens 20 and comprises: a screw unit 14B configured rotatably around a revolving axis J2 parallel to an optical axis J1 of the lens group and a motor 14A rotating and driving the screw unit 14B. The moving lens support unit 13 comprises: a support member 11 arranged along the revolving axis J2 and being long in the direction that the revolving axis J2 extends and a support member 12 projecting from a part of the support member 11 excepting the right end to the moving lens 20 side. The support member 12 supports the moving lens 20 directly, and the support member 11 has a screw groove 11c screwed with the screw unit 14B only in the right end.COPYRIGHT: (C)2015,JPO&INPIT【課題】焦点距離の変更を精度良く行うことができ、かつ、小型化が容易な内視鏡装置を提供する。【解決手段】可動レンズ20を含むレンズ群を通して被写体を撮像する撮像素子22を含む内視鏡装置は、可動レンズ20の移動に伴って光軸方向に移動する可動レンズ支持部13と、可動レンズ支持部13を光軸方向に駆動する可動レンズ駆動部14とを備える。可動レンズ駆動部14は、可動レンズ20の半径方向外側に設けられ、レンズ群の光軸J1に平行な回転軸J2を中心として回転自在に構成されるネジ部14Bと、ネジ部14Bを回転駆動するモータ14Aとにより構成される。可動レンズ支持部13は、回転軸J2に沿って配置され回転軸J2の伸びる方向に長手の支持部材11と、支持部材11の右端部を除く部分から可動レンズ20側に突出する支持部材12とにより構成される。支持部材12が可動レンズ20を直接支持しており、支持部材11は、右端部にのみネジ部14Bと螺合するネジ溝11cを有する。【選択図】図1
