| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope device capable of driving an optical system to be driven forwardly and backwardly with high accuracy in a narrow space.SOLUTION: An endoscope device has a plate spring having a fixing part 101 to be fixed to an optical system 63 to be driven, an elastic part 102 having elasticity and extending from the fixing part, and a friction engagement part 103 for biasing to an outer circumferential surface of a cylindrical driving member 61 by an elastic part of the elastic part 102. The elastic part 102 has a first elastic region 104 and a second elastic region 105 forming a free curve shape in a surface perpendicular to a central axial line O1, and a folding part 106 for connecting the regions in a curved shape. The second elastic region 105 is located more outside an insertion part in a radial direction than the first elastic region 104, is separated from an inner wall of the insertion part and extends curvedly along the inner wall. |
