公开(公告)号：US20160231561A1

公开(公告)日：2016-08-11

申请号：US15130141

申请日：2016-04-15

Applicant: OLYMPUS CORPORATION

Inventor： Yasuaki KASAI ,  Hiroshi TSURUTA

IPC: G02B26/10 ,  G02B23/24 ,  G02B23/26

CPC classification number: G02B26/103 ,  A61B1/00006 ,  A61B1/00172 ,  A61B1/07 ,  G02B23/2484 ,  G02B23/26

Abstract: A scanner includes: an optical fiber that guides light from a light source; a drive unit including at least one actuator that, when a voltage is applied thereto, displaces an exit end of the optical fiber in a direction intersecting an optical axis; a support portion that is provided on a basal end side from the drive unit and that is spaced away from the drive unit to support the optical fiber; and a correction portion that performs correction so as to bring the center of gravity of the drive unit and a combined center of gravity of the optical fiber, the drive unit, and the support portion close to each other on a cross-section of the drive unit.

Abstract translation: 扫描器包括：光源，其引导来自光源的光; 驱动单元，其包括至少一个致动器，当施加电压时，至少一个致动器沿与光轴相交的方向移位光纤的出口端; 所述支撑部分设置在所述驱动单元的基端侧并且与所述驱动单元间隔开以支撑所述光纤; 以及校正部，其进行校正，以使驱动单元的重心和光纤，驱动单元和支撑部的组合重心彼此靠近驱动器的横截面 单元。

公开(公告)号：US20190235231A1

公开(公告)日：2019-08-01

申请号：US16382325

申请日：2019-04-12

Applicant: OLYMPUS CORPORATION

Inventor： Takashi YASUMI ,  Yasuaki KASAI ,  Hiroshi TSURUTA ,  Hirokazu YOKOTA

IPC: G02B26/10 ,  F21V8/00 ,  G02B6/32

CPC classification number: G02B26/10 ,  A61B1/00 ,  G02B6/0006 ,  G02B6/32 ,  G02B2006/0098

Abstract: An optical fiber scanner of the present invention includes: an optical fiber; a vibration device that vibrates the optical fiber; and a fixturethat fixes the optical fiber. The vibration device includes: a piezoelectric element; and an elastic member thattransmits the vibration of the piezoelectric element to the optical fiber. The piezoelectric element includes: first and second piezoelectrically active region; and a piezoelectrically inactive region arranged so as to fill a space between the adjacent end surfaces of these active regions. The second moments of area of a transverse shape formed of the piezoelectric element, the optical fiber, and the elastic member in two axial directions that are orthogonal to the longitudinal axis of the optical fiber and that are orthogonal to each other are same at the position of the vibration device.

公开(公告)号：US20190104930A1

公开(公告)日：2019-04-11

申请号：US16206031

申请日：2018-11-30

Applicant: OLYMPUS CORPORATION

Inventor： Takashi YASUMI ,  Yasuaki KASAI ,  Hirokazu YOKOTA ,  Hiroshi TSURUTA

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

Abstract: Provided is an optical fiber scanner including: an optical fiber that guides light from a side of a proximal-end portion to a side of a distal-end portion along a longitudinal axis, the optical fiber emitting the light from the distal-end portion; a piezoelectric element that is secured to an outer circumferential surface of the optical fiber, the piezoelectric element, as a result of an alternating voltage being applied thereto, generating stretching vibrations in a direction along the longitudinal axis; and a pressing portion that, of an outer surface of the piezoelectric element positioned on the radially outer side of the optical fiber, presses down, radially inward, a portion corresponding to an antinode of the stretching vibrations in a direction along the longitudinal axis of the piezoelectric element.

公开(公告)号：US20190049719A1

公开(公告)日：2019-02-14

申请号：US16154772

申请日：2018-10-09

Applicant: OLYMPUS CORPORATION

Inventor： Hiroshi TSURUTA ,  Yasuaki KASAI ,  Hirokazu YOKOTA ,  Takashi YASUMI

IPC: G02B26/10 ,  G02B23/24 ,  H01L41/09

Abstract: An optical fiber scanner including: an optical fiber configured to emit, from a distal end thereof, illumination light guided from a light source; and at least three flat-plate-shaped piezoelectric elements that are disposed at positions spaced apart from the distal end that are closer to a proximal end of the optical fiber in the longitudinal axis direction and configured to vibrate the distal end of the optical fiber in a direction intersecting the longitudinal axis, wherein each of the piezoelectric elements has chamfered sections on both widthwise ends along at least a portion thereof in a longitudinal direction, and the piezoelectric elements adjacent in a circumferential direction are assembled into a tubular shape that surrounds the outer circumferential surface of the optical fiber in a close contact manner in a state where the chamfered sections are brought into close contact with one another.

公开(公告)号：US20170238792A1

公开(公告)日：2017-08-24

申请号：US15588931

申请日：2017-05-08

Applicant: OLYMPUS CORPORATION

Inventor： Hirokazu YOKOTA ,  Yasuaki KASAI ,  Hiroshi TSURUTA

IPC: A61B1/07

CPC classification number: A61B1/07 ,  A61B1/00165 ,  A61B1/00188

Abstract: Provided is an optical fiber scanner including: an illumination optical fiber that optically guides illumination light and outputs the light from a distal end thereof; an elastic section that engages with a base side of the illumination optical fiber relative to the distal end thereof and that is formed of an elastic material; piezoelectric elements fixed to a side surface of the elastic section, each piezoelectric element being polarized in a radial direction of the illumination optical fiber and receiving an alternating-current voltage in a polarization direction so as to cause the illumination optical fiber to vibrate via the elastic section; and a stationary section that has an engagement hole engaging with the elastic section at a position away from the piezoelectric elements toward the base side and that supports the illumination optical fiber in a cantilevered manner via the elastic section engaged with the engagement hole.

公开(公告)号：US20170075107A1

公开(公告)日：2017-03-16

申请号：US15360388

申请日：2016-11-23

Applicant: OLYMPUS CORPORATION

Inventor： Kazutoshi KUMAGAl ,  Yasuaki KASAI ,  Hiroshi TSURUTA ,  Yoshiro OKAZAKI ,  Hirokazu YOKOTA

IPC: G02B26/10 ,  G01M11/00 ,  G02B23/24

CPC classification number: G02B26/103 ,  A61B1/00096 ,  A61B1/00133 ,  A61B1/00172 ,  A61B1/07 ,  G01M11/088 ,  G01M11/30 ,  G02B23/2469 ,  G02B23/2476

Abstract: An optical fiber scanner including: an optical fiber that guides light produced by a light source; an actuator that is fixed at an intermediate position of the optical fiber in the long-axis direction and that displaces a distal end of the optical fiber through a bending vibration; and an electrically conductive detection wire member that extends in a state in which it is attached to the outer periphery of the optical fiber at least between the actuator and the distal end of the optical fiber, over a predetermined range in the long-axis direction.

Abstract translation: 一种光纤扫描器，包括：引导由光源产生的光的光纤; 固定在所述光纤的长轴方向的中间位置并通过弯曲振动使所述光纤的前端位移的致动器; 以及导电检测线构件，其在至少在所述致动器和所述光纤的远端之间的长度方向上的规定范围内至少在所述光纤的外周附着的状态下延伸。

公开(公告)号：US20160377857A1

公开(公告)日：2016-12-29

申请号：US15199254

申请日：2016-06-30

Applicant: OLYMPUS CORPORATION

Inventor： Hiroshi TSURUTA ,  Yasuaki KASAI ,  Yoshiro OKAZAKI ,  Hirokazu YOKOTA ,  Kazutoshi KUMAGAI

IPC: G02B23/24 ,  G02B26/10

CPC classification number: G02B23/2469 ,  A61B1/00096 ,  A61B1/00172 ,  A61B1/07 ,  G02B23/2484 ,  G02B23/26 ,  G02B26/103

Abstract: This optical fiber scanner has an elongated optical fiber, a vibration transmission member which has a column-like shape and has a penetrating hole through which the optical fiber penetrates, and a piezoelectric element provided on an outer surface of the vibration transmission member, wherein the penetrating hole is a fitted hole which is formed from a proximal end of the vibration transmission member to a middle of the vibration transmission member and the optical fiber is fitted, and the penetrating hole is an accommodation hole which is formed from the middle to a distal end of the vibration transmission member, which has a large inner diameter than an outer diameter of the optical fiber, and which accommodates a distal end portion of the optical fiber with a gap between the optical fiber and the accommodation hole.

Abstract translation: 该光纤扫描器具有细长的光纤，具有柱状形状并且具有穿透光纤的穿透孔的振动传递部件和设置在振动传递部件的外表面上的压电元件，其中， 贯通孔是从振动传递部件的基端部到振动传递部件的中部形成的嵌合孔，并且光纤嵌合，并且该贯通孔是从中部到远端形成的容纳孔 所述振动传递部件的端部具有比所述光纤的外径大的内径，并且在所述光纤与所述容纳孔之间具有间隙地容纳所述光纤的前端部。

公开(公告)号：US20160216510A1

公开(公告)日：2016-07-28

申请号：US15089644

申请日：2016-04-04

Applicant: OLYMPUS CORPORATION

Inventor： Hiroshi TSURUTA ,  Yasuaki KASAI

IPC: G02B26/10 ,  G01J1/04 ,  G02B6/35

CPC classification number: G02B26/103 ,  A61B1/00172 ,  A61B1/07 ,  G01J1/0403 ,  G01N21/474 ,  G01N21/6456 ,  G01N2021/4742 ,  G01N2021/6465 ,  G01N2021/6484 ,  G02B6/3578 ,  G02B2006/0098

Abstract: An optical fiber scanner is provided with an illumination optical fiber that guides light and emits the light from a distal end thereof; a plurality of piezoelectric elements that are secured on a side surface of the illumination optical fiber, that have polarizations in radial directions of the illumination optical fiber, and that vibrate the illumination optical fiber when an alternating voltage is applied in the polarization directions; and a vibration suppressing part that suppresses vibrations in the radial directions generated at a position of the illumination optical fiber away from the piezoelectric elements toward a base end.

Abstract translation: 光纤扫描器设置有引导光并从其远端发射光的照明光纤; 多个压电元件，固定在照明光纤的侧面上，其在照明光纤的径向上具有偏振度，并且在偏振方向上施加交流电压时使照明光纤振动; 以及振动抑制部，其抑制在照明光纤的位置处产生的径向方向上的振动远离压电元件朝向基端。