公开(公告)号：US20180113298A1

公开(公告)日：2018-04-26

申请号：US15839177

申请日：2017-12-12

Applicant: OLYMPUS CORPORATION

Inventor： Atsuyoshi SHIMAMOTO ,  Masashi YAMADA ,  Soichiro KOSHIKA

IPC: G02B26/10 ,  G02B23/24 ,  G11B15/02 ,  A61B1/00

CPC classification number: G02B26/101 ,  A61B1/00006 ,  A61B1/00172 ,  G02B23/2469 ,  G02B26/103 ,  G11B15/026

Abstract: A drive-condition setting device applied to an optical scanning apparatus having a fiber and an actuator that vibrates a distal end of the fiber, the drive-condition setting device detects a scan pattern of the illumination light output from the fiber, measures resonance frequencies in the x direction and the y direction of the fiber, sets a drive frequency and a drive voltage based on the resonance frequencies such that conditional expressions below are satisfied: when fx>fy, fd fx and Vx≤Vy (2), and when fx≤fy, fd fy and Vx≥Vy (4) where fd denotes the drive frequency, Vx denotes a maximum voltage of a X direction drive signal, and Vy denotes a maximum voltage of a y direction drive signal.

公开(公告)号：US20180014719A1

公开(公告)日：2018-01-18

申请号：US15698906

申请日：2017-09-08

Applicant: OLYMPUS CORPORATION

Inventor： Soichiro KOSHIKA ,  Atsuyoshi SHIMAMOTO ,  Masashi YAMADA

IPC: A61B1/00 ,  A61B1/07 ,  G02B23/26 ,  G02B23/24 ,  G02B6/036 ,  G02B26/10

CPC classification number: A61B1/00172 ,  A61B1/00006 ,  A61B1/00167 ,  A61B1/07 ,  G02B6/036 ,  G02B23/2469 ,  G02B23/26 ,  G02B26/103

Abstract: A scanning endoscope system includes an endoscope that includes an illumination fiber that is configured to guide illumination light for illuminating a subject and to emit the illumination light from an emitting end, and an actuator section that is configured to swing the emitting end of the illumination fiber according to a voltage or a current of an electrical signal that is applied to cause the illumination light to scan the subject, and a driver unit configured to apply, to the actuator section, the electrical signal that takes, as a drive frequency, a frequency at which an amount of change in amplitude at a time of swinging of the emitting end of the illumination fiber is at or below a predetermined value even when frequency characteristics of the amplitude are changed due to a change in a use condition of the endoscope.

公开(公告)号：US20170020777A1

公开(公告)日：2017-01-26

申请号：US15288576

申请日：2016-10-07

Applicant: OLYMPUS CORPORATION

Inventor： Masashi YAMADA

IPC: A61H23/02 ,  B06B1/06

CPC classification number: A61H23/02 ,  A61B17/320068 ,  A61B17/320092 ,  A61H23/0245 ,  B06B1/0644

Abstract: A vibration generating unit includes an element unit, and the element unit includes a piezoelectric element generating an ultrasonic vibration by being supplied with electric power. A proximal-side fixing member abuts on the element unit from a proximal direction side and a distal-side fixing member abuts on the element unit from a distal direction side such that the element unit is sandwiched between the proximal-side fixing member and the distal-side fixing member in a longitudinal direction. The distal-side fixing member has a greater acoustic impedance than the proximal-side fixing member.

Abstract translation: 振动发生单元包括元件单元，元件单元包括通过供电而产生超声波振动的压电元件。 近侧固定部件从近端侧抵接于元件部，远端侧固定部件从远侧方向抵接在元件部上，使得元件部被夹在基端侧固定部件与远侧 侧固定构件。 远侧固定部件的声阻抗比基端侧固定部件大。