公开(公告)号：US10126547B2

公开(公告)日：2018-11-13

申请号：US15065969

申请日：2016-03-10

Applicant: OLYMPUS CORPORATION

Inventor： Masato Fujiwara ,  Atsuyoshi Shimamoto ,  Takeharu Innami ,  Junichi Nishimura

IPC: G02B26/10 ,  A61B1/00 ,  A61B1/07 ,  G02B23/24

Abstract: An optical fiber is vibrated at an emitting end part by a scanning part, and light is irradiated from an emitting end face of the optical fiber onto an object to scan the object. The scanning part includes a pair of first direction coils facing each other in a first direction across the emitting end part, and a permanent magnet installed as penetrating the emitting end part. The permanent magnet is magnetized in the axial direction of the emitting end part. The scanning part drives, by supplying power to the first direction coils, the emitting end part to vibrate in the first direction in the second or higher-order resonance mode, forming nodes of the vibration within the permanent magnet. When in a state of non-vibration in the first direction, a relative distance between the permanent magnet and the first direction coils is smaller than that in other directions.