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。

公开(公告)号：US20190387966A1

公开(公告)日：2019-12-26

申请号：US16563062

申请日：2019-09-06

Applicant: OLYMPUS CORPORATION

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

IPC: A61B1/313 ,  A61B6/00 ,  A61B1/07 ,  A61B1/00

Abstract: A blood-vessel optical device is provided with: a sheath provided with a lumen penetrating therethrough, and a dovetail groove disposed so as to be parallel to the lumen; and an optical member accommodated in the lumen and including at least one of an illuminating portion guiding illumination light to an imaging subject and a light detecting portion guiding return light from the imaging subject, wherein the groove has a cross-sectional shape configured to accommodate an elongated member so as to be movable, and has an opening that has a width smaller than a diameter of the elongated member and from which a portion of the accommodated elongated member protrudes to the outside, and wherein the sheath is configured such that an external dimension in a direction orthogonal to an arrangement direction in which the lumen and the groove are arranged is smaller than an external dimension in the arrangement direction.

公开(公告)号：US20190227302A1

公开(公告)日：2019-07-25

申请号：US16372583

申请日：2019-04-02

Applicant: OLYMPUS CORPORATION

Inventor： Masashi YAMADA ,  Hiroshi TSURUTA

IPC: G02B26/10 ,  F21V8/00

Abstract: A scanning-type device includes: an optical fiber; a vibration unit vibrating a distal end of the optical fiber in a direction perpendicular to a longitudinal axis of the optical fiber; an outer tube accommodating the optical fiber and the vibration unit; and a support member supporting the vibration unit in the outer tube, the vibration unit having: a piezoelectric element expanding and contracting in the longitudinal-axis direction of the optical fiber; and a cylindrical vibration transmitting member disposed between the piezoelectric element and the optical fiber and transmitting expansion and contraction vibrations of the piezoelectric element to the optical fiber; the support member has a V-groove extending along a longitudinal axis of the outer tube to support the vibration transmitting member; and an outer surface of a section of the vibration transmitting member supported by the V-groove is a cylindrical surface extending along the longitudinal axis of the optical fiber.

公开(公告)号：US20170010462A1

公开(公告)日：2017-01-12

申请号：US15275367

申请日：2016-09-24

Applicant: OLYMPUS CORPORATION

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

IPC: G02B26/10 ,  G02B23/24

CPC classification number: G02B26/103 ,  G02B23/2469 ,  G02B26/10 ,  H01L41/0926 ,  H01L41/313

Abstract: A scanner unit includes: a tubular elastic part provided with marks outside a prescribed bonding region set on an outer surface thereof and; and a piezoelectric element that is bonded to the bonding region. The piezoelectric element includes: a piezoelectric body having two mutually opposing electrode faces; and marks that are different from each other, respectively provided on the two electrode faces. The mark provided on one electrode face has a shape that matches the mark provided outside the bonding region when the piezoelectric body is bonded to the bonding region so that the other electrode face contacts the outer surface.

Abstract translation: 扫描器单元包括：管状弹性部分，其设置在设置在其外表面上的规定的接合区域之外的标记; 和键合区域的压电元件。 压电元件包括​​：具有两个彼此相对的电极面的压电体; 以及分别设置在两个电极面上的彼此不同的标记。 设置在一个电极面上的标记具有与将压电体接合到接合区域时设置在接合区域外侧的标记相匹配的形状，使得另一个电极面接触外表面。

公开(公告)号：US20150205050A1

公开(公告)日：2015-07-23

申请号：US14676128

申请日：2015-04-01

Applicant: OLYMPUS CORPORATION

Inventor： Tomoki FUNAKUBO ,  Hiroshi TSURUTA ,  Morimichi SHIMIZU ,  Yasuaki KASAI

IPC: G02B6/36 ,  H01L41/09

CPC classification number: G02B26/101 ,  A61B1/00165 ,  G02B26/103 ,  H01L41/083 ,  H01L41/0913 ,  H01L41/0966

Abstract: The force of a piezoelectric element is efficiently transferred to an optical fiber without attenuation, so that the vibration of the optical fiber becomes large. Provided is an optical fiber scanner including an optical fiber which has an elongated cylindrical shape in which illumination light emitted from a light source is guided and can emerge from a distal end thereof and whose distal end can be vibrated in a direction intersecting the longitudinal direction thereof; and at least one piezoelectric element which have a plate shape polarized in a thickness direction thereof and which are separately bonded to an outer circumferential surface of the optical fiber closer to a base side than to a distal end thereof.

Abstract translation: 压电元件的力被有效地传递到光纤而不衰减，使得光纤的振动变大。 本发明提供一种光纤扫描器，其包括具有细长圆柱形状的光纤，其中从光源发射的照明光被引导并且可以从其远端出射并且其远端可以沿与其纵向相交的方向振动 ; 以及至少一个压电元件，其具有在其厚度方向上极化的板状，并且分离地接合到光纤的外周表面比其远侧更靠近基底侧。