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公开(公告)号：US20190029507A1
公开(公告)日：2019-01-31
申请号：US16139145
申请日：2018-09-24
Applicant: OLYMPUS CORPORATION
Inventor： Hirokazu YOKOTA , Yasuaki KASAI , Hiroshi TSURUTA , Takashi YASUMI
Abstract: An optical fiber scanner includes an optical fiber and a fixed member that is fixed to the outer periphery of the optical fiber. The fixed member is provided with: two vibration parts that are adjacent to the optical fiber in radial directions of the optical fiber that intersect with each other and that expand and contract in the longitudinal direction of the optical fiber; and a connector that connects the two vibration parts. The two vibration parts respectively have inner surfaces that abut against the outer periphery of the optical fiber.
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公开(公告)号：US20170038580A1
公开(公告)日：2017-02-09
申请号：US15299534
申请日：2016-10-21
Applicant: OLYMPUS CORPORATION
Inventor： Yoshiro OKAZAKI , Yasuaki KASAI , Hiroshi TSURUTA , Hirokazu YOKOTA , Kazutoshi KUMAGAI
CPC classification number: G02B26/103 , A61B1/0017 , A61B1/00172 , A61B1/07 , G02B23/2469 , G02B23/2476
Abstract: An optical fiber scanner including: an optical fiber that guides illumination light; a piezoelectric element that is disposed at an intermediate position on the optical fiber in the long-axis direction and that displaces, due to a bending vibration, an emission end of the optical fiber in a direction intersecting the long axis; a wiring part that is electrically bonded to the piezoelectric element at a location between the piezoelectric element and the optical fiber; a tube-shaped electrically conductive frame that has an inner hole for accommodating the piezoelectric element and the optical fiber; and a holding section that fixes the frame and the piezoelectric element and that conducts electricity between the frame and the piezoelectric element.
Abstract translation: 一种光纤扫描器，包括：引导照明光的光纤; 压电元件，其设置在长轴方向的光纤中的中间位置，并且由于弯曲振动而使光纤的发射端沿与长轴交叉的方向移位; 在压电元件和光纤之间的位置处电连接到压电元件的布线部分; 管状导电框架，其具有用于容纳压电元件的内孔和光纤; 以及保持部，其固定框架和压电元件，并且在框架和压电元件之间传导电力。
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公开(公告)号：US20170242239A1
公开(公告)日：2017-08-24
申请号：US15588789
申请日：2017-05-08
Applicant: OLYMPUS CORPORATION
Inventor： Hiroshi TSURUTA , Yasuaki KASAI , Hirokazu YOKOTA
CPC classification number: G02B23/2469 , A61B1/00172 , A61B1/07 , G02B26/103
Abstract: Provided is an optical-fiber scanner including: an optical fiber; a body fitted on a basal-end side of the optical fiber; piezoelectric elements secured to the body and causing the optical fiber to vibrate; and a securing portion to which the body is fitted at a position that is farther on a basal-end side away from the piezoelectric elements, wherein the body has a columnar portion that is formed of an elastic material to which the piezoelectric elements are attached and that has a through-hole into which the optical fiber can be inserted, and a distal-end portion that is disposed at a distal end of the columnar portion, that supports the optical fiber in a fitted state, and that has a rotator shape in which a cross-sectional area thereof in a radial direction gradually decreases toward a distal end of the optical fiber.
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公开(公告)号：US20170176742A1
公开(公告)日：2017-06-22
申请号：US15450547
申请日：2017-03-06
Applicant: OLYMPUS CORPORATION
Inventor： Yasuaki KASAI , Hiroshi TSURUTA , Hirokazu YOKOTA
CPC classification number: G02B26/103 , A61B1/04 , G02B23/2469 , G02B23/26 , H04N5/2256 , H04N2005/2255
Abstract: Provided is an optical fiber scanner including: an illumination optical fiber; an annular elastic member formed of an elastic material having an engagement hole that engages with the illumination optical fiber; and a plurality of piezoelectric elements fixed to the annular elastic member, each piezoelectric element being polarized in a radial direction of the illumination optical fiber and applied an alternating voltage in a polarization direction so as to cause the illumination optical fiber to vibrate. The annular elastic member has a vibration transmitting section to a side of which the plurality of piezoelectric elements are bonded and transmits vibrations to the illumination optical fiber, and a fiber support section that is integrally molded together with the vibration transmitting section and that is capable of supporting the illumination optical fiber.
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公开(公告)号：US20180252910A1
公开(公告)日：2018-09-06
申请号：US15968846
申请日：2018-05-02
Applicant: OLYMPUS CORPORATION
Inventor： Hiroshi TSURUTA , Yasuaki KASAI , Hirokazu YOKOTA
CPC classification number: G02B23/2469 , A61B1/00006 , A61B1/00172 , A61B1/07 , G01J1/0403 , G01J1/0425 , G01J1/42 , G02B6/3566 , G02B6/3578 , G02B23/26 , G02B26/103
Abstract: An optical fiber scanner including: an elongated optical fiber that guides light; a vibration transferring member that has a through-hole through which the optical fiber is made to pass; piezoelectric elements bonded to the outer surfaces of the vibration transferring member and that perform stretching vibrations in the longitudinal direction of the optical fiber when alternating voltages at a predetermined frequency are applied thereto, thus causing the optical fiber to generate bending vibrations in directions intersecting the longitudinal direction; and a fixing part that fixes the vibration transferring member. The vibration transferring member is provided with: holding surfaces formed of flat surfaces to which the piezoelectric elements are bonded; and contact surfaces formed of flat surfaces parallel to the holding surfaces, that are provided at least partially on the inner surfaces of the through-hole, and with which the outer surface of the optical fiber is brought into contact.
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Patent Agency Ranking
公开(公告)号：US20170010461A1
公开(公告)日：2017-01-12
申请号：US15275347
申请日：2016-09-24
Applicant: OLYMPUS CORPORATION
Inventor： Yasuaki KASAI , Hiroshi TSURUTA , Yoshiro OKAZAKI , Hirokazu YOKOTA , Kazutoshi KUMAGAI
Abstract: An optical fiber scanner includes: an elongated optical fiber; driving piezoelectric elements that are provided on an outer circumferential surface of the optical fiber and produce bending oscillation at a distal-end portion of the optical fiber as a result of an alternating voltage being applied thereto; detecting piezoelectric elements provided on the outer circumferential surface at the distal-end portion of the optical fiber; and a control unit that controls an alternating voltage to be applied to the driving piezoelectric elements on the basis of the voltages produced by the detecting piezoelectric elements.
Abstract translation: 光纤扫描器包括：细长光纤; 驱动压电元件，其设置在光纤的外周面上，并且由于施加交流电压而在光纤的前端部产生弯曲振荡; 检测设置在光纤的前端部的外周面的压电元件; 以及控制单元，其基于由检测压电元件产生的电压来控制施加到驱动压电元件的交流电压。
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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
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.
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8.发明申请SCANNER UNIT, OPTICAL FIBER SCANNER, ILLUMINATION APPARATUS, AND OBSERVATION APPARATUS 审中-公开扫描仪，光纤扫描仪，照明设备和观察设备公开(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
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。
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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
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.
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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
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.
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