PROBLEM TO BE SOLVED: To provide an endoscope device which can accurately change its focal distance and is easy to downsize.SOLUTION: An endoscope device including an imaging element 23 for imaging a subject through lenses including a movable lens 21 comprises: a rotation member 11 configured to be rotatable around a rotation axis J2 a motor for rotatably driving the rotation member 11 a movable lens holding unit part 14 which has a pin 15 for contacting with a part 11b of the rotation member 11 and holds the movable lens 21 and a spring 16 for energizing the pin 15 for the rotation member 11 side. The rotation member 11 includes: a part 11b in a cylindrical shape extending in the optical axis direction and a part 11a in a cylindrical shape which is provided so as to protrude from an end face on the subject side of the part 11b and is thinner than the part 11b. The end face of the part 11b includes a contact face on which the pin 15 abuts and whose height in the optical axis direction changes continuously in the circumferential direction of the part 11b. The movable lens holding unit part 14 is fit movably in the optical axis direction at the part 11a.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21を含むレンズ群を通して被写体を撮像する撮像素子23を含む内視鏡装置は、回転軸J2を中心として回転自在に構成される回転部材11と、回転部材11を回転駆動するモータと、回転部材11の部分11bに当接するピン15を有し可動レンズ21を保持する可動レンズ保持部14と、ピン15を回転部材11側に付勢するバネ16とを備える。回転部材11は、光軸方向に伸びる円柱状の部分11bと、部分11bの被写体側の端面から突出して設けられる部分11bよりも細い円柱状の部分11aとを含む。部分11bの端面は、ピン15が当接され、部分11bの円周方向に沿って光軸方向における高さが連続的に変化する当接面を含む。可動レンズ保持部14は、部分11aにおいて光軸方向に移動自在に嵌合されている。【選択図】図1
