WO2017068651A1 - Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation - Google Patents

Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation Download PDF

Info

Publication number
WO2017068651A1
WO2017068651A1 PCT/JP2015/079595 JP2015079595W WO2017068651A1 WO 2017068651 A1 WO2017068651 A1 WO 2017068651A1 JP 2015079595 W JP2015079595 W JP 2015079595W WO 2017068651 A1 WO2017068651 A1 WO 2017068651A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
coil spring
illumination
piezoelectric element
light
Prior art date
Application number
PCT/JP2015/079595
Other languages
English (en)
Japanese (ja)
Inventor
靖明 葛西
博一 横田
博士 鶴田
Original Assignee
オリンパス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
Priority to JP2017546317A priority Critical patent/JPWO2017068651A1/ja
Priority to PCT/JP2015/079595 priority patent/WO2017068651A1/fr
Publication of WO2017068651A1 publication Critical patent/WO2017068651A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications

Definitions

  • the present invention relates to a fiber optic scanner, an illumination device and an observation device.
  • the optical fiber scanner of Patent Document 1 holds a cantilevered optical fiber and a tubular piezoelectric element in a cantilevered manner by a common base, and a vibration generated by the piezoelectric element is cantilevered through the base. It is transmitted to In the optical fiber scanner of Patent Document 2, an optical fiber is penetrated and adhered to a through hole of a cylindrical ferrule fixed to a base, and a piezoelectric element is fixed to the outer surface of the ferrule.
  • the optical fiber scanner of Patent Document 1 has an air gap between a cylindrical piezoelectric element and a cantilever optical fiber passing through the inside of the piezoelectric element, and has a low rigidity as a whole.
  • the low-rigidity optical fiber scanner is likely to generate low-order vibration modes with low frequencies when resonating, and high-order high-order vibration modes (spurious modes) occur due to low-order vibration modes. .
  • the higher order vibration mode overlaps with the original vibration mode of the optical fiber, the other part resonates with the vibration of the cantilever optical fiber, and the optical fiber is stably vibrated in a single vibration mode. The light can not be scanned stably along the desired trajectory.
  • the optical fiber scanner of Patent Document 2 has a structure in which the inner circumferential surface of the through hole of the ferrule and the outer circumferential surface of the optical fiber are bonded over the entire length, the vibration of the piezoelectric element can be transmitted directly to the optical fiber. Although it is possible, it is difficult for the rigidity of the ferrule to be dominant and to increase the vibration of the tip of the optical fiber.
  • the present invention has been made in view of the above-mentioned circumstances, and efficiently transmits the vibration of the piezoelectric element to the optical fiber, and can easily increase the vibration of the tip of the optical fiber, and an illumination It aims at providing an apparatus and an observation apparatus.
  • an elongated optical fiber for guiding light and emitting light from a tip, and an outer peripheral surface of the optical fiber at a position spaced apart from the tip to the proximal end is closely attached to the outer peripheral surface.
  • a coil spring made of an elastic material bonded in a fixed state is fixed by being bonded to the outer peripheral surface of the coil spring, and an alternating voltage of a predetermined frequency is applied to stretch and vibrate in the longitudinal direction of the optical fiber.
  • the optical fiber includes a piezoelectric element that generates bending vibration in a direction intersecting the longitudinal direction through the coil spring, and a fixing portion fixed to the coil spring at a base end side of the piezoelectric element, the coil spring includes An optical fiber scanner having a pitch interval that widens from the proximal side to the distal side.
  • the position of the fixing portion is a node and the frequency is equal to the frequency of the alternating voltage
  • Bending vibration is generated in the coil spring, and the bending vibration is transmitted to the optical fiber.
  • the portion on the tip end side of the optical fiber coil spring is supported by the coil spring in a cantilever shape with a free end at the tip end, so that the direction in which the tip of the optical fiber crosses in the longitudinal direction by bending vibration transmitted from the coil spring
  • the light emitted from the tip of the optical fiber is scanned in the direction crossing the traveling direction of the light.
  • the optical fiber scanner as a whole has a structure having rigidity higher than that of the optical fiber alone, so that low-order mode vibration occurs. It is difficult to do. Furthermore, since the coil spring has a natural frequency different from the frequency of the alternating voltage, the coil spring does not resonate with the bending vibration of the projecting portion of the optical fiber.
  • the generation of vibration modes other than the predetermined frequency is prevented, and the protrusion of the optical fiber continues to vibrate stably in the single frequency vibration mode.
  • the vibration of the optical fiber can be stabilized and a desired scanning locus can be stably obtained.
  • the coil spring since the coil spring has low flexural rigidity, it is difficult to inhibit bending vibration by the piezoelectric element, and the amplitude of vibration at the tip of the optical fiber can be efficiently increased.
  • the pitch interval of the coil spring is wider from the proximal end toward the distal end, the distal end of the coil spring is more easily bent than the proximal end, and the expansion and contraction direction of the piezoelectric element It does not disturb the vibration of the optical fiber. Thereby, light can be emitted from the tip of the optical fiber along a desired trajectory.
  • the pitch interval of the coil spring may be continuously widened from the proximal side toward the distal side.
  • the bending ease of the coil spring can be continuously increased from the proximal end side toward the distal end side. Since the amplitude of vibration of the optical fiber increases continuously from the proximal end toward the tip, the coil spring can easily follow the expansion and contraction direction of the piezoelectric element, and the vibration of the optical fiber is not inhibited, and a desired locus is obtained. Light can be emitted along the tip of the optical fiber.
  • the pitch interval of the coil spring may be gradually increased from the proximal end side toward the distal end side.
  • the bending easiness of the coil spring can be gradually increased from the proximal side toward the distal side.
  • the amplitude of vibration of the optical fiber increases continuously from the proximal end toward the distal end, but even if the ease of bending of the coil spring is gradually increased, it easily follows the expansion and contraction direction of the piezoelectric element, and Light can be emitted from the tip of the optical fiber along a desired trajectory without inhibiting the vibration of the optical fiber.
  • an illumination apparatus including a light source generating illumination light and any one of the above-described optical fiber scanners for scanning the illumination light from the light source. Further, according to another aspect of the present invention, there is provided an illumination device, a light detection unit for detecting return light returning from an object by irradiating illumination light from the illumination device onto the object, and the piezoelectric element And a voltage supply unit for supplying an alternating voltage at a frequency of
  • the vibration of the piezoelectric element can be efficiently transmitted to the optical fiber, and the vibration of the tip of the optical fiber can be easily increased.
  • FIG. 1 It is a whole block diagram of an observation apparatus provided with the optical fiber scanner which concerns on one Embodiment of this invention, and an illuminating device. It is a longitudinal cross-sectional view along the longitudinal axis which shows the internal structure of the insertion part front-end
  • the observation device 100 includes an endoscope 20, a control device main body 30, and a display 40, as shown in FIG. 1, and is emitted from the tip of the insertion portion 20a of the endoscope 20.
  • This is a light scanning endoscope apparatus which scans a laser beam L along a spiral scanning locus B on a subject A to obtain an image of the subject A.
  • the observation apparatus 100 includes the light source 1 that generates illumination light, the illumination device 3 that emits illumination light to a subject A, and the subject A by irradiating the illumination light. And a drive control unit (voltage supply unit) 7 for driving and controlling the illumination device 3 and the light detector 5.
  • the illumination device 3 is disposed on the tip side of the optical fiber scanner 10 having the illumination optical fiber 11 for guiding the illumination light emitted from the light source 1 and emitting the light from the tip, and for illumination
  • a plurality of detection optical fibers 17 are provided which are arranged in the circumferential direction on the upper side, and guide return light from the subject A (for example, reflected light or fluorescence of illumination light) to the light detector 5.
  • the light source 1 and the light detector 5 are disposed on the proximal end side of the optical fiber scanner 10.
  • the optical fiber scanner 10 is an optical fiber for illumination (optical fiber) 11 such as a multimode fiber or a single mode fiber, and an optical fiber 11 for illumination from the tip to the proximal end.
  • a coil spring 21 disposed in close contact with the outer peripheral surface of the illumination optical fiber 11 so as to surround the outer peripheral surface of the illumination optical fiber 11; and four piezoelectric elements 23A and 23B fixed to the outer surface of the coil spring 21; A fixing portion 25 for fixing the base end portion of the coil spring 21 to the frame 15 and lead wires 27A and 27B for supplying an alternating voltage to the piezoelectric elements 23A and 23B are provided.
  • the illumination optical fiber 11 is made of an elongated glass material and is disposed along the longitudinal direction of the frame 15.
  • the tip of the illumination optical fiber 11 is disposed in the vicinity of the tip inside the frame 15.
  • the proximal end of the illumination optical fiber 11 extends from the proximal end of the frame 15 to the outside and is connected to the light source 1.
  • the longitudinal direction of the illumination optical fiber 11 is taken as the Z direction
  • two radial directions orthogonal to each other of the illumination optical fiber 11 are taken as the X direction and the Y direction.
  • the coil spring 21 has an inner diameter dimension equal to or less than the outer diameter dimension of the illumination optical fiber 11 in the free state. Further, the coil spring 21 has a first spring portion 21A in which adjacent wire members are in close contact with each other over a predetermined length from one end, and a second spring portion 21B having a constant pitch spaced apart from the first spring portion 21A. Is equipped.
  • the coil spring 21 is disposed in a state where the inner surface is in close contact with the outer peripheral surface of the illumination optical fiber 11 by penetrating the illumination optical fiber 11 inside.
  • the inner surface of the coil spring 21 and the outer peripheral surface of the illumination optical fiber 11 are bonded and fixed to each other by an epoxy adhesive.
  • the distal end portion of the illumination optical fiber 11 protruding from the distal end surface of the coil spring 21 to the distal end side will be referred to as a projecting portion 11 a.
  • the coil spring 21 is made of a material having high rigidity, for example, a material selected from metal (iron, aluminum alloy, titanium etc.), synthetic resin (hard plastic), glass and carbon. As described later, when the coil spring 21 is used as a common GND, the coil spring 21 needs to be made of a conductive metal material or to be provided with a coating made of a conductive metal material. .
  • the piezoelectric elements 23A and 23B are rectangular flat plates made of a piezoelectric ceramic material such as lead zirconate titanate (PZT), for example.
  • PZT lead zirconate titanate
  • positive electrode processing is performed on the front surface
  • negative electrode processing is performed on the rear surface, and thereby, polarization is performed in the thickness direction from the positive electrode to the negative electrode.
  • Arrow P in the drawing indicates the polarization direction of the piezoelectric elements 23A and 23B.
  • the four piezoelectric elements are composed of two A-phase piezoelectric elements 23A and two B-phase piezoelectric elements 23B.
  • the piezoelectric element 23A for A phase and the piezoelectric element 23B for B phase are alternately arranged at equal intervals in the circumferential direction of the coil spring 21 as shown in FIG. It is fixed by the adhesive of
  • the two piezoelectric elements 23A for A phase facing each other in the X direction are arranged such that the polarization directions are the same as the X direction, and the two piezoelectric elements 23B for phase B facing each other in the Y direction are The polarization directions are arranged to be the same as the Y direction.
  • the fixing portion 25 is a cylindrical member having a through hole 26.
  • the fixing portion 25 is electrically conductive in a state in which the entire first spring portion of the coil spring 21 positioned closer to the base end than the piezoelectric elements 23A and 23B is fitted to the through hole 26. It fixes with the adhesive of the sex.
  • the outer peripheral surface of the fixing portion 25 is fixed to the inner wall of the frame 15. Thereby, the coil spring 21 is supported by the fixing portion 25 in a cantilever shape whose free end is at the tip end, and the protrusion 11a of the illumination optical fiber 11 is formed by the coil spring 21 in a cantilever shape whose free end is at the tip It is supported.
  • the fixing portion 25 is electrically connected to the electrodes of the four piezoelectric elements 23A and 23B on the coil spring 21 side via the coil spring 21 and functions as a common GND when driving the piezoelectric elements 23A and 23B. It is supposed to be.
  • a lead wire 27A for A phase is joined to the two piezoelectric elements 23A for A phase by a conductive adhesive.
  • a lead wire 27B for B phase is bonded to the two B phase piezoelectric elements 22B by a conductive adhesive.
  • the GND lead wire (not shown) is joined to the fixing portion 25.
  • grooves extending in the Z direction are formed at four places spaced in the circumferential direction, and one lead wire 27A, 27B is accommodated in each groove.
  • the lead wires 27A, 27B and the GND lead wire are connected to the drive control device 7.
  • the projecting portion 11 a of the illumination optical fiber 11 and the coil spring 21 have a cantilever structure in which each tip is a free end. Therefore, the natural frequencies F1 and F2 (Hz) of the projecting portion 11a of the optical fiber 11 for illumination and the coil spring 21 have their Young's modulus E (N / m2), second moment of area moment I (m4), and disconnection in the XY plane. It is each represented by the following Formula (1) using area A (m2), length L (m) of Z direction, and density rho (Kg / m3).
  • ⁇ is a dimensionless coefficient determined by the vibration mode.
  • the drive control device 7 applies an A-phase alternating voltage having a predetermined drive frequency to the A-phase piezoelectric element 23A through the lead wire 27A, and a predetermined B-phase piezoelectric element 23B through the lead wire 27B.
  • the alternating voltage of B phase which has the drive frequency of is applied.
  • the predetermined drive frequency is set to a frequency equal to the natural frequency F1 of the protrusion 11a of the illumination optical fiber 11 or a frequency near the natural frequency F1.
  • the drive control device 7 supplies to each of the lead wires 27A and 27B an alternating voltage of A phase and an alternating voltage of B phase whose phases are different from each other by ⁇ / 2 and whose amplitude changes sinusoidally.
  • the coil spring 21 has a natural frequency F2 larger than the natural frequency F1 of the protrusion 11a of the illumination optical fiber 11 so as to have the natural frequency F2 different from the predetermined drive frequency of the alternating voltage. It is designed as.
  • the drive control device 7 is operated to supply illumination light from the light source 1 to the illumination optical fiber 11, and also through the lead wires 27A and 27B. Then, an alternating voltage having a predetermined drive frequency is applied to the piezoelectric elements 23A and 23B.
  • the piezoelectric element 23A for the A phase to which the alternating voltage of the A phase is applied vibrates in the Z direction orthogonal to the polarization direction. At this time, when one of the two piezoelectric elements 23A is contracted in the Z direction and the other is expanded in the Z direction, bending vibration in the X direction is excited at the coil spring 21 with the position of the fixing portion 25 as a node. Ru.
  • the bending vibration of the coil spring 21 is transmitted to the optical fiber 11 for illumination, whereby the projecting portion 11 a bends and vibrates in the X direction at a frequency equal to the drive frequency of the alternating voltage, and the tip of the optical fiber 11 for illumination is in the X direction
  • the illumination light emitted from the tip is linearly scanned in the X direction.
  • the piezoelectric element 23B for the B phase to which the alternating voltage of the B phase is applied vibrates in the Z direction orthogonal to the polarization direction.
  • one of the two piezoelectric elements 23B is contracted in the Z direction and the other is expanded in the Z direction
  • bending vibration in the Y direction with the position of the fixing portion 25 at the coil spring 21 is excited.
  • the bending vibration of the coil spring 21 is transmitted to the illumination optical fiber 11, whereby the protrusion 11a bends and vibrates in the Y direction at a frequency equal to the drive frequency of the alternating voltage, and the illumination light emitted from the tip is in the Y direction. Is scanned linearly.
  • the phase of the alternating voltage of phase A and the phase of the alternating voltage of phase B are mutually shifted by ⁇ / 2, and the amplitudes of the alternating voltage of phase A and the alternating voltage of phase B change sinusoidally with time.
  • the tip of the illumination optical fiber 11 vibrates along the spiral locus, and the illumination light is two-dimensionally scanned along the spiral locus on the subject A.
  • the drive frequency is a frequency equal to or near the natural frequency F1 of the protrusion 11a, the protrusion 11a can be excited efficiently.
  • the return light from the subject A is received by the plurality of detection optical fibers 17, and the intensity thereof is detected by the light detector 5.
  • the drive control device 7 causes the light detector 5 to detect the return light in synchronization with the scanning period of the illumination light, and generates the image of the subject A by correlating the detected return light intensity with the scanning position of the illumination light. .
  • the coil spring 21 is provided between the piezoelectric elements 23A and 23B and the illumination optical fiber 11, so that the optical fiber scanner 10 as a whole is more than the illumination optical fiber 11 alone. Since the structure also has high rigidity, it is difficult to generate low-order vibration modes lower than the drive frequency. Furthermore, since the natural frequency F2 of the coil spring 21 is set larger than the drive frequency of the alternating voltage, the coil spring 21 vibrates in resonance with the vibration at the drive frequency of the projecting portion 11a of the illumination optical fiber 11. Is prevented.
  • the protrusion 11a of the illumination optical fiber 11 can be stably vibrated at a predetermined drive frequency, and the illumination light can be stably scanned along a desired spiral locus.
  • the coil spring 21 is bonded between the piezoelectric elements 23A and 23B and the illumination optical fiber 11, the vibration of the piezoelectric elements 23A and 23B can be transmitted to the illumination optical fiber 11 more directly. And coil spring 21 can hold down bending rigidity low enough compared with the ferrule which consists of a cylindrical rigid body. Therefore, there is an advantage that the vibration of the illumination optical fiber 11 is not inhibited by the coil spring 21 and the amplitude of the vibration of the protrusion 11 a can be easily increased.
  • the first spring portion 21A fitted in the through hole 26 of the fixing portion 25 is a close contact coil spring, and on the outer surface of the illumination optical fiber 11 at the tip end side than the fixing portion 25. Since the second spring portion 21B to be wound has a constant pitch interval, the rigidity of the fixed portion 25 where bending vibration does not occur in the illumination optical fiber 11 as a node of vibration is increased. The bending rigidity of the coil spring 21 at the portion where the bending vibration occurs can be reduced. Thereby, there is an advantage that the amplitude of the vibration of the illumination optical fiber 11 can be easily increased. Further, since the wires are spaced from each other, unnecessary vibration from the fixed portion 25 can be attenuated to make it difficult to transmit the vibration to the tip of the illumination optical fiber 11.
  • the second spring portion 21B exemplifies the coil spring 21 having a constant pitch interval, but instead, as shown in FIG. 4, the second spring portion 21B is fitted in the through hole 26 of the fixed portion 25.
  • a coil spring having a second spring portion 21B in which the pitch interval continuously increases from the first spring portion 21A on one end side to the other end side may be adopted.
  • a coil spring having the portion 21B may be employed.
  • the bending rigidity can be reduced toward the tip by increasing the pitch interval of the coil spring 21 toward the tip where the amplitude of the bending vibration becomes large, and the illumination optical fiber 11
  • the amplitude can be efficiently increased without inhibiting the bending vibration of the

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Analytical Chemistry (AREA)
  • Radiology & Medical Imaging (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Abstract

Dans le but de transmettre efficacement la vibration d'un élément piézo-électrique jusqu'à une fibre optique et d'augmenter facilement la vibration de l'extrémité distale de la fibre optique, le dispositif de balayage à fibre optique (10) de la présente invention est pourvu d'une fibre optique allongée (11) pour le guidage optique de la lumière et l'émission de lumière à partir de son extrémité distale ; un ressort hélicoïdal (21) comprenant un matériau élastique fixé à la surface périphérique externe de la fibre optique (11) dans des conditions d'adhérence étroite de manière à recouvrir la surface périphérique externe au niveau d'une position située à une certaine distance, en direction d'un côté latéral proximal, de l'extrémité distale ; un élément piézo-électrique (23A) destiné à être soumis à une vibration d'étirement dans le sens longitudinal de la fibre optique (11) par application d'une tension alternative présentant une fréquence prédéterminée et provoquant une vibration de flexion de la fibre optique (11) par l'intermédiaire du ressort hélicoïdal (21) dans une direction croisant la direction longitudinale, l'élément piézo-électrique (23A) étant collé à la surface périphérique externe du ressort hélicoïdal (21) et ainsi fixé ; et une partie de fixation (25) fixée sur le ressort hélicoïdal (21) plus près de l'extrémité proximale que l'élément piézo-électrique (23A) ; le ressort hélicoïdal (21) présentant un intervalle de pas qui augmente progressivement depuis le côté correspondant à l'extrémité proximale et en allant vers le côté correspondant à l'extrémité distale.
PCT/JP2015/079595 2015-10-20 2015-10-20 Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation WO2017068651A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017546317A JPWO2017068651A1 (ja) 2015-10-20 2015-10-20 光ファイバスキャナ、照明装置および観察装置
PCT/JP2015/079595 WO2017068651A1 (fr) 2015-10-20 2015-10-20 Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/079595 WO2017068651A1 (fr) 2015-10-20 2015-10-20 Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation

Publications (1)

Publication Number Publication Date
WO2017068651A1 true WO2017068651A1 (fr) 2017-04-27

Family

ID=58557060

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/079595 WO2017068651A1 (fr) 2015-10-20 2015-10-20 Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation

Country Status (2)

Country Link
JP (1) JPWO2017068651A1 (fr)
WO (1) WO2017068651A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010162089A (ja) * 2009-01-13 2010-07-29 Hoya Corp 光走査型内視鏡
JP2011156235A (ja) * 2010-02-02 2011-08-18 Hoya Corp 光走査型内視鏡、光走査型内視鏡駆動装置、および光走査型内視鏡システム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975898B2 (en) * 2000-06-19 2005-12-13 University Of Washington Medical imaging, diagnosis, and therapy using a scanning single optical fiber system
CN103826523B (zh) * 2011-11-09 2016-08-24 奥林巴斯株式会社 内窥镜和内窥镜装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010162089A (ja) * 2009-01-13 2010-07-29 Hoya Corp 光走査型内視鏡
JP2011156235A (ja) * 2010-02-02 2011-08-18 Hoya Corp 光走査型内視鏡、光走査型内視鏡駆動装置、および光走査型内視鏡システム

Also Published As

Publication number Publication date
JPWO2017068651A1 (ja) 2018-08-09

Similar Documents

Publication Publication Date Title
JP6129050B2 (ja) 光ファイバスキャナ、照明装置および観察装置
JP6274949B2 (ja) 光ファイバスキャナ、照明装置および観察装置
JP6498214B2 (ja) 光ファイバスキャナ、照明装置および観察装置
WO2015129391A1 (fr) Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation
WO2016075758A1 (fr) Dispositif de balayage à fibre optique, dispositif d'éclairage et appareil d'observation
US10330916B2 (en) Optical-fiber scanner, illumination apparatus, and observation apparatus
US20180252910A1 (en) Optical fiber scanner, illumination device, and observation device
WO2016189627A1 (fr) Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation
JP6865221B2 (ja) 光ファイバスキャナ、照明装置および観察装置
WO2017068924A1 (fr) Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation
WO2017068651A1 (fr) Dispositif de balayage à fibre optique, dispositif d'éclairage et dispositif d'observation
US20190235231A1 (en) Optical fiber scanner, illumination device, and observation device
WO2017183157A1 (fr) Scanner à fibre optique, dispositif d'éclairage et dispositif d'observation
WO2020044541A1 (fr) Scanner à fibre optique, dispositif d'éclairage, et dispositif d'observation
WO2017168809A1 (fr) Dispositif de balayage à fibres optiques, dispositif d'éclairage et dispositif d'observation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15906657

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017546317

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15906657

Country of ref document: EP

Kind code of ref document: A1