WO2018146924A1 - Connecteur optique et dispositif d'émission d'ondes photo-acoustiques - Google Patents

Connecteur optique et dispositif d'émission d'ondes photo-acoustiques Download PDF

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Publication number
WO2018146924A1
WO2018146924A1 PCT/JP2017/043387 JP2017043387W WO2018146924A1 WO 2018146924 A1 WO2018146924 A1 WO 2018146924A1 JP 2017043387 W JP2017043387 W JP 2017043387W WO 2018146924 A1 WO2018146924 A1 WO 2018146924A1
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WO
WIPO (PCT)
Prior art keywords
optical connector
connecting member
cylindrical connecting
ferrule
cylindrical
Prior art date
Application number
PCT/JP2017/043387
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English (en)
Japanese (ja)
Inventor
覚 入澤
温之 橋本
Original Assignee
富士フイルム株式会社
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 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2018566772A priority Critical patent/JP6968110B2/ja
Publication of WO2018146924A1 publication Critical patent/WO2018146924A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/13—Tomography
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means

Definitions

  • the present invention relates to an optical connector having an optical fiber and a photoacoustic wave generator using the optical connector.
  • Patent Document 1 proposes an optical connector in which a ferrule that holds an optical fiber is provided at the tip of the optical fiber, and the ferrule is disposed in a cylindrical connection member. And in patent document 1, when an elastic member is provided in a cylindrical connection member and an optical connector is connected to the connection part (for example, optical adapter) of a connection destination, a ferrule is pressed to the connection part side by the elastic member.
  • connection part for example, optical adapter
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide an optical connector capable of improving the insertion property of an optical connector into a connection portion of a connection destination and a photoacoustic wave generator using the optical connector. It is.
  • An optical connector includes an optical fiber having a ferrule portion provided at one end thereof, and a cylindrical connection member formed in a cylindrical shape into which the optical fiber is inserted, the ferrule being provided in the cylinder at the one end portion. And a cylindrical connecting member from which the other end of the optical fiber is drawn out from the other end, and the ferrule has a convex portion having a convex direction in a direction perpendicular to the length direction of the cylindrical connecting member. And the elastic member is provided in contact with the surface on the outside in the length direction of the cylindrical connecting member of the convex portion.
  • a protrusion may be formed on the inner wall of the cylindrical connecting member, and an elastic member may be installed between the protrusion and the protrusion.
  • a recess may be formed on the inner wall of the cylindrical connecting member, and the protrusion may be formed by fitting the protrusion forming member into the recess.
  • the protrusion may be integrally formed with the cylindrical connecting member.
  • the protrusion may be provided only on a part of the inner periphery of the inner wall of the cylindrical connecting member.
  • the protrusions are provided only at four locations on the inner periphery of the inner wall of the cylindrical connecting member.
  • a groove may be formed along the inner periphery of the cylindrical connecting member, or an elastic member may be installed in the groove.
  • the elastic member is preferably an O-ring.
  • the elastic member may be a torsion spring.
  • optical connector it is preferable to provide a notch in the outer wall on the one end side of the cylindrical connecting member.
  • the tip of the ferrule part is chamfered.
  • a photoacoustic wave generation device includes a light source unit, the optical connector of the present invention connected to the light source unit, and a puncture needle to which the other end of the optical fiber extended from the optical connector is connected. Is provided.
  • the ferrule part has a convex part having a convex direction in a direction orthogonal to the length direction of the cylindrical connecting member.
  • the insertion property to the connection part of the connection destination of an optical connector can be improved by providing an elastic member in contact with the surface outside the length direction of the cylindrical connection member of the convex part.
  • Sectional drawing which shows the structure of one Embodiment of the optical connector of this invention
  • the perspective view which shows the external appearance of one Embodiment of a cylindrical connection member Partial enlarged view of the optical connector shown in FIG.
  • the figure which shows an example of a protrusion formation member Partial enlarged view of the cylindrical connecting member shown in FIG.
  • External side view of one embodiment of cylindrical connecting member The figure for demonstrating the detailed dimension of a cylindrical connection member
  • FIG. which shows the structure of other embodiment of the optical connector of this invention.
  • FIG. which shows the structure of other embodiment of the optical connector of this invention.
  • Sectional drawing which shows the structure of other embodiment of the optical connector of this invention.
  • Sectional drawing which shows the structure of other embodiment of the optical connector of this invention.
  • Sectional drawing which shows the structure of the puncture needle in one Embodiment of the photoacoustic wave generator of this invention.
  • FIG. 1 is a diagram illustrating a schematic configuration of an optical connector 1 of the present embodiment.
  • FIG. 1 is a cross-sectional view including a central axis (hereinafter simply referred to as a central axis) extending in the length direction of the optical connector 1 of the present embodiment.
  • the optical connector 1 of the present embodiment includes an optical fiber 10, a ferrule part 11, a cylindrical connecting member 12, a protective member 13, and a covering member 14, as shown in FIG.
  • the ferrule part 11 is provided at one end of the optical fiber 10 and includes a ferrule body 11a made of zirconia and a metal part 11b connected to the ferrule body 11a.
  • the metal part 11 b has a convex part 11 c having a convex direction in a direction orthogonal to the length direction of the cylindrical connecting member 12.
  • the optical fiber 10 is inserted into a hole formed along the central axis extending in the length direction of the ferrule part 11 and bonded and fixed so that one end surface of the optical fiber 10 is exposed from one end 11d of the ferrule part 11. It is configured.
  • the one end 11d (tip) of the ferrule part 11 is chamfered. Thereby, it can make it easy to insert with respect to the connection part (for example, optical adapter) which is the connection destination of the optical connector 1.
  • a protective coat may be provided on the side surface of the optical fiber 10 with polyimide or the like. Thereby, chipping of the optical fiber 10 can be suppressed. Further, in order to improve the coaxiality between the core portion of the optical fiber 10 and the ferrule inner hole, the protective coat may be peeled only at a portion that passes through the ferrule portion 11.
  • the cylindrical connecting member 12 is a member formed in a cylindrical shape into which the optical fiber 10 provided with the ferrule portion 11 is inserted.
  • FIG. 2 is a perspective view showing an appearance of the cylindrical connecting member 12.
  • the ferrule part 11 described above is fixed in the cylinder of the one end part 12 a of the cylindrical connecting member 12.
  • a ferrule contact surface 12 c with which the convex portion 11 c of the metal portion 11 b of the ferrule portion 11 abuts is formed on the inner wall of the one end portion 12 a of the cylindrical connecting member 12.
  • the other end of the optical fiber 10 on which the ferrule portion 11 is not provided is inserted from the one end portion 12a side of the cylindrical connecting member 12. Then, the optical fiber 10 is pulled out from the other end portion 12b side of the cylindrical connecting member 12 until the convex portion 11c of the ferrule portion 11 abuts on the ferrule abutting surface 12c, and the convex portion 11c abuts on the ferrule abutting surface 12c. Thus, the position of the ferrule portion 11 in the length direction of the cylindrical connecting member 12 is determined.
  • the O-ring 15 is disposed opposite to the ferrule contact surface 12c side of the convex portion 11c of the ferrule portion 11.
  • the O-ring 15 corresponds to the elastic member of the present invention.
  • the O-ring 15 is provided in contact with the surface 11e (see FIG. 3) on the outer side in the length direction of the cylindrical connecting member 12 of the convex portion 11c.
  • the O-ring 15 is provided along the outer periphery of the ferrule body 11 a and is provided between the ferrule body 11 a and the inner wall of the cylindrical connecting member 12. In this embodiment, the O-ring is used as the elastic member.
  • the present invention is not limited to this, and an X-ring, a rubber washer, a torsion spring, or the like can be used.
  • the rubber material nitrile, chlorobrene, silicone, fluorine, butyl, EPDM (ethylene propylene diene), or the like can be used.
  • FIG. 3 is an enlarged view of one end portion 12a of the cylindrical connecting member 12 shown in FIG.
  • a groove 12 s (corresponding to a concave portion of the present invention) is formed on the inner wall of the one end portion 12 a of the cylindrical connecting member 12.
  • the groove 12s is formed along the inner periphery of the cylindrical connecting member 12, and the protrusion forming member 16 is fitted and provided in the groove 12s.
  • FIG. 4 is a diagram illustrating an example of the protrusion forming member 16.
  • the protrusion forming member 16 is formed from a material that can be deformed to some extent, such as resin, and is formed in a ring shape as shown in FIG. As shown in FIG.
  • the protrusion forming member 16 is formed with a width w (see FIG. 4) larger than the depth dp of the groove 12s, whereby the protrusion 16a is formed on the inner wall of the cylindrical connecting member 12. Is formed.
  • An O-ring 15 is installed between the protruding portion 16a and the convex portion 11c of the ferrule portion 11. The distance ds between the protruding portion 16a and the convex portion 11c of the ferrule portion 11 is set to be smaller than the cross-sectional diameter of the ring member of the O-ring 15, whereby the O-ring 15 is connected to the cylindrical connecting member 12. Is pressed and fixed by the protrusion 16a in the length direction.
  • the O-ring 15 thereby presses the convex portion 11 c toward the inside in the length direction of the cylindrical connecting member 12 (arrow Z side shown in FIG. 3).
  • the above-mentioned cross-sectional diameter of the ring member of the O-ring 15 is the cross-sectional diameter of the ring member before the O-ring 15 is installed in the cylindrical connecting member 12 and is not deformed by pressure. is there.
  • the O-ring 15 is pressed and deformed by the protrusion 16a, so that the O-ring 15 is in close contact with the inner wall of the cylindrical connecting member 12 and the outer peripheral surface of the ferrule portion 11. Thereby, the ferrule part 11 is positioned in the direction orthogonal to the length direction of the cylindrical connecting member 12.
  • the interval dt is provided between the protrusion 16 a and the ferrule body 11 a, the ferrule 11 is deformed in the length direction of the cylindrical connecting member 12 by deformation of the O-ring 15. It is supported in a movable state in an orthogonal direction.
  • the distance dt between the protrusion 16a and the ferrule body 11a is preferably 0.1 mm or more and 1 mm or less.
  • the optical connector 1 of the present embodiment as described above, by pressing the convex portion 11c of the ferrule portion 11 with the O-ring 15, it is possible to prevent the ferrule portion 11 from moving wastefully. Further, since the O-ring 15 is deformed so that the ferrule portion 11 can move in the direction orthogonal to the length direction of the cylindrical connecting member 12, the connecting portion to which the optical connector 1 is connected The ferrule part 11 can be inserted along the sleeve (for example, an optical adapter), and thereby the insertion property of the optical connector 1 can be improved.
  • the sleeve for example, an optical adapter
  • FIG. 5 is an enlarged view of a range of a dotted square shown in FIG.
  • the protective member contact surface 12 d is formed by a surface perpendicular to the length direction of the cylindrical connecting member 12.
  • the protection member 13 is a cylindrical tube member made of resin or the like, and the outer surface of the optical fiber 10 is protected by inserting the optical fiber 10 into the tube member.
  • the protection member 13 is the other end of the cylindrical connection member 12. It is inserted from 12b. And the front-end
  • the optical fiber 10 is inserted from the one end 12a side of the cylindrical connection member 12.
  • the protective member contact surface 12d is formed as described above, and the optical fiber 10 is inserted with the protective member 13 positioned by the protective member contact surface 12d.
  • the optical fiber 10 can be easily inserted, and the manufacturing time can be shortened.
  • a ferrule-side tapered surface 12e is formed between the protective member contact surface 12d and the ferrule portion 11 described above.
  • the ferrule side taper surface 12e is an inclined surface formed so that the inner diameter of the cylindrical connecting member 12 gradually increases toward the ferrule portion 11 side.
  • the inner wall surface that has a surface on the one end 12a side of the cylindrical connecting member 12 and is perpendicular to the length direction of the cylindrical connecting member 12 has a ferrule contact. Only the contact surface 12c is provided, so that the optical fiber 10 can be easily inserted.
  • a fiber passage portion 12f is formed between the above-described ferrule side tapered surface 12e and the protective member contact surface 12d. As shown in FIG. 5, the fiber passage portion 12 f is formed such that the inner diameter d of the cylindrical connecting member 12 in the fiber passage portion 12 f is smaller than the inner diameter D of the protection member 13.
  • an intermediate tapered surface 12g is formed between the protective member contact surface 12d and the other end portion 12b of the cylindrical connecting member 12.
  • the intermediate taper surface 12g is an inclined surface formed so that the inner diameter of the cylindrical connecting member 12 gradually increases toward the other end 12b side.
  • a protective member passage portion 12h is formed between the intermediate taper surface 12g and the protective member contact surface 12d described above.
  • the protection member passage portion 12h is formed such that the inner diameter of the cylindrical connection member 12 in the protection member passage portion 12h is equal to the outer diameter of the protection member 13.
  • an opening-side tapered surface 12i is formed at the other end portion 12b of the cylindrical connecting member 12 of the present embodiment.
  • the opening-side tapered surface 12i is an inclined surface formed such that the inner diameter of the cylindrical connecting member 12 gradually increases toward the other end 12k of the cylindrical connecting member 12.
  • the opening-side tapered surface 12i described above is formed from a curved surface.
  • the opening-side tapered surface 12i is a curved surface, as shown in FIG. 1, the line representing the opening-side tapered surface 12i on the cross section including the central axis of the cylindrical connecting member 12 is a quadratic curve or a spline curve. It can be expressed as By forming the opening-side tapered surface 12i as a curved surface in this manner, the optical fiber 10 can be bent along the curved surface, so that the bending radius of the optical fiber 10 can be limited. On the other hand, local load can be suppressed.
  • a covering member 14 is provided around the protective member 13.
  • the covering member 14 covers the protective member 13 at the other end portion 12 b of the cylindrical connecting member 12.
  • the covering member 14 is a cylindrical tube member formed from a resin or the like, and the protection member 13 is inserted into the tube member to protect the protection member 13 and the optical fiber 10 in the protection member 13. be able to.
  • the protection member 13 and the covering member 14 are inserted from the other end 12 b of the cylindrical connection member 12. Is done.
  • the distal end of the protective member 13 on the insertion side is in contact with the above-described protective member contact surface 12d, and the insertion-side distal end of the covering member 14 is positioned in contact with the above-described opening-side tapered surface 12i.
  • the optical fiber 10 is inserted from the one end portion 12a side of the cylindrical connection member 12.
  • a notch 12p is formed in the outer wall on the one end 12a side of the cylindrical connecting member 12 of the present embodiment.
  • the notch 12p can be prevented from coming off from the connecting portion of the optical connector 1 by fitting with the convex portion of the connecting portion (for example, optical adapter) to which the optical connector 1 is connected.
  • FIGS. 6 is an external side view of the cylindrical connecting member 12, and FIG. 7 is a sectional view taken along line XX of FIG.
  • the length L1 of the cylindrical connecting member 12 shown in FIG. 6 is preferably 20 mm or more and 100 mm or less.
  • the outer diameter d1 of the cylindrical connection member 12 is 3 mm or more and 10 mm or less.
  • the diameter d2 of the opening on the one end 12a side of the cylindrical connecting member 12 is preferably 1.5 mm or more and 8 mm or less.
  • the inner diameter d3 of the portion in which the ferrule portion 11 is accommodated is preferably 2.4 mm or more and 6 mm or less, and the inner diameter d4 of the portion in which the end of the metal portion 11b is accommodated is 1.2 mm or more and 4 mm or less.
  • the width (d3-d4) / 2 of the ferrule contact surface 12c is preferably 0.6 mm or more and 2 mm or less.
  • the depth dp of the groove 12s is preferably 0.1 mm or more and 1 mm or less.
  • the width w (see 4) of the ring-shaped protrusion forming member 16 fitted into the groove 12s is preferably 0.4 mm or more and 3 mm or less with respect to the depth of the groove 12s. That is, it is preferable that the height h from the inner wall of the cylindrical connection member 12 of the projection part 16a shown in FIG. 3 is 0.3 mm or more and 2 mm or less.
  • the inner diameter d5 of the portion where the tip end of the metal part 11b of the ferrule part 11 is disposed is preferably 1 mm or more and 3 mm or less, and the inner diameter d6 of the protective member passage part 12h is 0.1 mm or more and 1 mm or less. Preferably there is.
  • the diameter d8 of the opening on the other end 12b side of the cylindrical connecting member 12 is preferably 1.5 mm or more and 8 mm or less, and the cylindrical connection between the intermediate tapered surface 12g and the opening-side tapered surface 12i.
  • the inner diameter d7 of the member 12 is preferably 1 mm or more and 4 mm or less.
  • positioned in the length direction of the cylindrical connection member 12 is 5 mm or more and 12 mm or less.
  • the length L3 from the one end 12r of the cylindrical connecting member 12 to the end of the ferrule side tapered surface 12e (boundary between the ferrule side tapered surface 12e and the fiber passing portion 12f) in the length direction of the cylindrical connecting member 12 is 7 mm or more. It is preferable that it is 25 mm or less.
  • the length L5 of the fiber passage portion 12f in the length direction of the cylindrical connecting member 12 is preferably 0.5 mm or more and 2 mm or less.
  • the tip of the optical fiber 10 can be smoothly guided to the center of the protection member 13.
  • the fiber passage portion 12f is a very narrow space, it becomes difficult to manufacture the fiber passage portion 12f when the length is long. Therefore, when the length L5 of the fiber passage portion 12f is set to 2 mm or less, manufacturing becomes easier and the yield can be improved.
  • the total length L4 of the fiber passage portion 12f and the protection member passage portion 12h is preferably not less than 2 mm and not more than 10 mm, and the other end 12k of the tubular connection member 12 in the length direction of the tubular connection member 12 It is preferable that the length L6 from the middle part taper surface 12g to 5mm or more is 15 mm or less.
  • the inclination angle ⁇ 1 of the ferrule-side tapered surface 12e is 45 ° or less. More preferably, it is 30 ° or less, and more preferably about 10 °.
  • the ferrule side tapered surface 12e is formed symmetrically with respect to the central axis of the cylindrical connecting member 12, and the inclination angle ⁇ 1 of the ferrule side tapered surface 12e is the central axis of the cylindrical connecting member 12 and the ferrule side tapered. An angle formed by the surface 12e.
  • the inclination angle ⁇ 2 of the intermediate tapered surface 12g is desirably 45 ° or less. More preferably, it is 30 ° or less, and more preferably about 5 °.
  • the intermediate taper surface 12g is formed symmetrically with respect to the central axis of the cylindrical connection member 12, and the inclination angle ⁇ 2 of the intermediate taper surface 12g is the central axis of the cylindrical connection member 12 and the intermediate taper. An angle formed by the surface 12g.
  • one end of the optical fiber 10 is inserted into a hole formed along the central axis extending in the length direction of the ferrule portion 11. Bonded and fixed.
  • the protective member 13 is inserted into the cylinder of the covering member 14, and the protective member 13 provided with the covering member 14 is inserted from the other end 12b of the cylindrical connecting member 12. The Then, the distal end on the insertion side of the protective member 13 is positioned in contact with the protective member abutting surface 12d, and the distal end on the insertion side of the covering member 14 is positioned in contact with the opening-side tapered surface 12i.
  • the installation procedure of the covering member 14 and the protection member 13 is not limited to the above-described procedure. For example, after the protection member 13 is inserted from the other end portion 12b of the cylindrical connecting member 12, the covering member 14 is provided on the protection member 13. It may be.
  • the optical fiber 10 is inserted from the one end portion 12a side of the cylindrical connecting member 12 in a state where the protective member 13 and the covering member 14 are positioned.
  • the other end of the optical fiber 10 is drawn from the other end 12b of the cylindrical connecting member 12 via the ferrule-side tapered surface 12e, and the ferrule 11 is one end of the cylindrical connecting member 12 as shown in FIG. It is inserted from the 12a side.
  • the ferrule part 11 is fixed to the one end part 12a of the cylindrical connection member 12 as shown in FIG. 8V.
  • the O-ring 15 is inserted from the opening 12 v of the one end portion 12 a of the cylindrical connecting member 12 so that the ferrule body 11 a passes through the inside of the O-ring 15. It arrange
  • the protrusion forming member 16 is inserted from the opening 12v of the cylindrical connecting member 12 and formed on the inner wall of the cylindrical connecting member 12 as shown in FIG. 9II. Is fitted into the groove 12s.
  • the protrusion 16a is formed by fitting the protrusion forming member 16 into the groove 12s formed in the inner wall of the cylindrical connecting member 12, but the present invention is not limited thereto. Instead, the protrusion 16a may be integrally formed with the cylindrical connecting member 12. By integrally molding in this way, the number of parts and the assembly process can be reduced. However, in this case, when the protruding portion 16a is formed over the entire inner wall of the cylindrical connecting member 12, the ferrule portion 11 inserted from the one end portion 12a of the cylindrical connecting member 12 is inserted to the ferrule contact surface 12c. I can't.
  • FIG. 10 is a cross-sectional view of a surface orthogonal to the length direction of the cylindrical connecting member 12 at a position where the protruding portion 16a is formed. As shown in FIG. 10, the four protrusions 16a are more preferably formed in a cross direction.
  • FIG. 11I is an external view of the side surface of the ferrule part 11
  • FIG. 11II is a view of the ferrule part 11 of FIG.
  • a notch 11f is formed in the cross direction on the convex portion 11c of the ferrule portion 11 shown in FIG. 11, as shown in FIG. 11II.
  • the protrusion 16a provided on the inner wall of the cylindrical connecting member 12 is formed with a size that can pass through the notch 11f.
  • the optical connector 1 when the optical connector 1 is manufactured using the ferrule portion 11 having a shape as shown in FIG. 11 by integrally forming the protruding portion 16 a and the cylindrical connecting member 12, the cylindrical connecting member 12.
  • the protruding portion 16a of the cylindrical connecting member 12 is inserted so as to pass through the notch 11f of the ferrule portion 11.
  • the ferrule portion 11 is inserted up to the ferrule abutting surface 12c.
  • the four protrusions 16a and the notches 11f are provided in the orthogonal cross direction.
  • the present invention is not limited to this, and the protrusions 16a and the notches 11f may be provided only in two opposing positions.
  • the number of the protrusions 16a and the notches 11f may not necessarily match, and the number of the notches 11f may be larger than the number of the protrusions 16a.
  • the protrusion 16a may be provided at two places and the notch 11f may be provided at four places.
  • the O-ring 15 is inserted from the opening 12v of the cylindrical connecting member 12 so that the ferrule body 11a passes through the inside of the O-ring 15, and the O-ring 15 is connected to the cylindrical connecting member 12.
  • the protrusion 16a and the convex portion 11c of the ferrule portion 11 are disposed.
  • the O-ring 15 is disposed between the protrusion 16a formed on the inner wall of the cylindrical connecting member 12 and the protrusion 11c of the ferrule part 11.
  • an O-ring groove 12 u may be provided on the inner wall of the cylindrical connecting member 12, and the O-ring 15 may be disposed in the O-ring groove 12 u.
  • the groove 12u for the O-ring is formed along the inner periphery of the cylindrical connecting member 12.
  • the width wd of the groove 12 u in the length direction of the cylindrical connecting member 12 is set smaller than the cross-sectional diameter of the ring member of the O-ring 15. Therefore, the O-ring 15 is deformed when the O-ring 15 is installed in the groove 12u, so that the O-ring 15 is in close contact with the ferrule body 11a.
  • channel 12u of the longitudinal direction of the cylindrical connection member 12 as shown in FIG.
  • channel 12u and the length direction outer side (opening of the cylindrical connection member 12 of the convex part 11c) 12v side) surface 11e is preferably the same surface. Thereby, the O-ring 15 and the surface 11e of the convex part 11c can be contacted, and the ferrule part 11 can be prevented from moving wastefully.
  • the optical connector 1 When the optical connector 1 is manufactured by forming the O-ring groove 12u on the inner wall of the tubular connecting member 12 as shown in FIG. 13, first, as shown in FIG. It is inserted and installed up to the position of the contact surface 12c.
  • the O-ring 15 is inserted from the opening 12v of the cylindrical connecting member 12 so that the ferrule body 11a passes through the inside of the O-ring 15, and the O-ring 15 is used for the O-ring. It is deformed and arranged in the groove 12u.
  • the configuration in which the O-ring 15 is arranged in the groove 12u for the O-ring reduces the number of parts and the assembly process as compared with the configuration in which the O-ring 15 is pressed by providing the protrusion forming member 16. can do.
  • the O-ring 15 is provided so that the ferrule portion 11 is movable in a direction orthogonal to the length direction of the cylindrical connecting member 12.
  • the ferrule part 11 may be moved by bonding the outer peripheral surface of the metal part 11 b of the ferrule part 11 and the inner wall of the cylindrical connecting member 12 with a soft elastic adhesive 19.
  • the elastic adhesive is an adhesive that becomes a rubber-like elastic body when cured. Specifically, silicone-based, modified silicone-based, epoxy-modified silicone-based, and urethane-based elastic adhesives can be used.
  • the outer peripheral side surface of the ferrule body 11a and the O-ring 15 are in close contact with each other.
  • the present invention is not limited to this.
  • a gap may be provided between the O-ring 15 and the outer peripheral side surface of the ferrule body 11a.
  • the ferrule portion 11 can be moved in a direction orthogonal to the length direction of the cylindrical connecting member 12 and the ferrule portion 11 is not moved unnecessarily. Can do.
  • a gap may be provided between the O-ring 15 and the outer peripheral side surface of the ferrule body 11a as shown in FIG. Even in such a configuration, the ferrule portion 11 can be moved in a direction orthogonal to the length direction of the cylindrical connecting member 12 and the ferrule portion 11 is not moved unnecessarily. Can do.
  • FIG. 18 is a diagram illustrating an appearance of the photoacoustic wave generator 2 of the present embodiment.
  • the photoacoustic wave generator 2 includes a laser unit 30 (corresponding to the light source unit of the present invention) and a puncture needle 21 having a photoacoustic wave generating function.
  • the optical connector 1 of the above embodiment is connected to the laser unit 30, and the light emitting end of the optical fiber 10 extended from the optical connector 1 is connected to the puncture needle 21.
  • the optical fiber 10 is covered with the protective member 13 as described above.
  • FIG. 19 is a diagram showing an internal configuration of the puncture needle 21.
  • FIG. 19 is a cross-sectional view including the central axis along the length direction of the puncture needle 21.
  • the puncture needle 21 is a needle that is at least partially punctured by the subject.
  • the puncture needle body 21a is made of, for example, metal, has an opening 21b at the tip, and is formed in a hollow shape.
  • the diameter (inner diameter) of the hollow portion 21c of the puncture needle body 21a may be any size as long as the above-described optical fiber 10 can be provided.
  • the optical fiber 10 extended from the optical connector 1 is provided in the hollow portion 21c of the puncture needle body 21a along the length direction of the puncture needle body 21a.
  • a photoacoustic wave generator 22 is provided at the light emitting end 10a of the optical fiber 10 on the distal end side of the puncture needle body 21a.
  • the photoacoustic wave generator 22 absorbs light emitted from the light emitting end 10a and generates a photoacoustic wave.
  • the photoacoustic wave generation unit 22 is formed of a material including a light absorber that absorbs light guided by the optical fiber 10 and a resin that contains the light absorber.
  • a synthetic resin such as an epoxy resin, a fluorine resin, a silicone resin, or a polyurethane resin mixed with a black pigment can be used.
  • the laser unit 30 includes, for example, a semiconductor laser light source.
  • Laser light emitted from the laser unit 30 enters from the exposed surface of the optical fiber 10 connected to the ferrule portion 11 of the optical connector 1, is guided by the optical fiber 10, and enters the puncture needle 21.
  • the laser unit 30 desirably emits pulsed laser light in the near infrared wavelength region.
  • the near-infrared wavelength region means a wavelength region of about 700 nm to 2000 nm.
  • the semiconductor laser light source is used.
  • other laser light sources such as a solid laser light source, a fiber laser light source, and a gas laser light source may be used.
  • a light source may be used.
  • the laser light emitted from the laser unit 30 is guided by the optical fiber 10 in the optical connector 1 and applied to the photoacoustic wave generator 22 in the puncture needle 21.
  • a photoacoustic wave is generated by irradiating the photoacoustic wave generator 22 with laser light.
  • the puncture needle 21 generates a photoacoustic wave while being inserted into the subject, and the photoacoustic wave is detected by an ultrasonic probe or the like.
  • the photoacoustic wave is generated by irradiating the photoacoustic wave generation unit 22 with light, the photoacoustic wave generation unit 22 may not be provided.
  • light emitted from the end face of the optical fiber 10 of the puncture needle 21 may be irradiated onto a tissue such as a human body, and thereby a photoacoustic wave emitted from the tissue may be detected by an ultrasonic probe or the like.
  • the photoacoustic image generation apparatus of this invention is not limited only to the said embodiment, Various correction and change are possible from the structure of the said embodiment. Those subjected to are also included in the scope of the present invention.

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Abstract

L'invention concerne un connecteur optique qui peut améliorer l'aptitude à l'insertion, dans une partie de connexion, d'un article auquel le connecteur optique sera connecté. L'invention concerne également un dispositif d'émission d'ondes photo-acoustiques qui met en œuvre ce connecteur optique. La présente invention comprend : une fibre optique (10) qui possède une partie férule (11) disposée au niveau d'une de ses extrémités ; et un élément de connexion cylindrique (12), qui est formé dans une forme cylindrique dans laquelle la fibre optique (10) est insérée, une section d'extrémité de l'élément de connexion cylindrique (12) comprenant la partie férule (11) positionnée à l'intérieur du cylindre, et l'autre section d'extrémité comprenant l'autre extrémité de la fibre optique tirée en sortie à partir de celle-ci ; l'invention étant caractérisée en ce que la partie férule (11) présente une saillie (11c) dont le sens de saillie est perpendiculaire au sens de la longueur de l'élément de connexion cylindrique (12), et en ce qu'un joint torique (15) est fourni qui entre en contact avec une surface de la saillie (11c), cette surface se situant sur un côté extérieur dans le sens de la longueur de l'élément de connexion cylindrique (12).
PCT/JP2017/043387 2017-02-10 2017-12-04 Connecteur optique et dispositif d'émission d'ondes photo-acoustiques WO2018146924A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110231686A (zh) * 2019-06-21 2019-09-13 中航光电科技股份有限公司 一种光纤连接器壳体及光纤连接器
CN110346876A (zh) * 2019-06-21 2019-10-18 中航光电科技股份有限公司 一种光纤连接器插头壳体及光纤连接器插头
WO2021161556A1 (fr) * 2020-02-12 2021-08-19 株式会社金門光波 Dispositif laser ultraviolet
US11621535B2 (en) 2019-07-26 2023-04-04 Kimmon Koha Co., Ltd. Fiber laser apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007121648A (ja) * 2005-10-27 2007-05-17 Nippon Telegr & Teleph Corp <Ntt> 光ファイバ挿入治具
JP2009205100A (ja) * 2008-02-29 2009-09-10 Sumitomo Electric Ind Ltd 光コネクタ
JP2011175286A (ja) * 2011-04-27 2011-09-08 Furukawa Electric Co Ltd:The 光コネクタ
US20130177278A1 (en) * 2011-08-29 2013-07-11 Jianmin Guo On-site hot-melt quick connector for optical fibers
JP2015231583A (ja) * 2013-01-09 2015-12-24 富士フイルム株式会社 光音響画像生成装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190910A (ja) * 1982-04-30 1983-11-08 Matsushita Electric Works Ltd 光コネクタ
JP2002323641A (ja) * 2001-04-25 2002-11-08 Ms Giken:Kk 光ファイバ用コネクタ
JP4721374B2 (ja) * 2009-03-18 2011-07-13 日本航空電子工業株式会社 光コネクタ
JP2013156309A (ja) * 2012-01-27 2013-08-15 Sumitomo Electric Ind Ltd 光コネクタ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007121648A (ja) * 2005-10-27 2007-05-17 Nippon Telegr & Teleph Corp <Ntt> 光ファイバ挿入治具
JP2009205100A (ja) * 2008-02-29 2009-09-10 Sumitomo Electric Ind Ltd 光コネクタ
JP2011175286A (ja) * 2011-04-27 2011-09-08 Furukawa Electric Co Ltd:The 光コネクタ
US20130177278A1 (en) * 2011-08-29 2013-07-11 Jianmin Guo On-site hot-melt quick connector for optical fibers
JP2015231583A (ja) * 2013-01-09 2015-12-24 富士フイルム株式会社 光音響画像生成装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110231686A (zh) * 2019-06-21 2019-09-13 中航光电科技股份有限公司 一种光纤连接器壳体及光纤连接器
CN110346876A (zh) * 2019-06-21 2019-10-18 中航光电科技股份有限公司 一种光纤连接器插头壳体及光纤连接器插头
CN110231686B (zh) * 2019-06-21 2021-05-18 中航光电科技股份有限公司 一种光纤连接器壳体及光纤连接器
CN110346876B (zh) * 2019-06-21 2021-05-18 中航光电科技股份有限公司 一种光纤连接器插头壳体及光纤连接器插头
US11621535B2 (en) 2019-07-26 2023-04-04 Kimmon Koha Co., Ltd. Fiber laser apparatus
WO2021161556A1 (fr) * 2020-02-12 2021-08-19 株式会社金門光波 Dispositif laser ultraviolet
JP2021128198A (ja) * 2020-02-12 2021-09-02 株式会社金門光波 紫外レーザー装置
JP7012311B2 (ja) 2020-02-12 2022-02-14 株式会社金門光波 紫外レーザー装置

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