WO2017033333A1 - Connecteur optique et dispositif à source lumineuse - Google Patents

Connecteur optique et dispositif à source lumineuse Download PDF

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Publication number
WO2017033333A1
WO2017033333A1 PCT/JP2015/074245 JP2015074245W WO2017033333A1 WO 2017033333 A1 WO2017033333 A1 WO 2017033333A1 JP 2015074245 W JP2015074245 W JP 2015074245W WO 2017033333 A1 WO2017033333 A1 WO 2017033333A1
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WO
WIPO (PCT)
Prior art keywords
light
holding member
unit
light shielding
optical connector
Prior art date
Application number
PCT/JP2015/074245
Other languages
English (en)
Japanese (ja)
Inventor
田中　良典
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 PCT/JP2015/074245 priority Critical patent/WO2017033333A1/fr
Priority to JP2017536152A priority patent/JPWO2017033333A1/ja
Publication of WO2017033333A1 publication Critical patent/WO2017033333A1/fr

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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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
    • 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 and a light source device using the optical connector.
  • the first ferrule is attached to the end of the first optical fiber core wire
  • the second ferrule is attached to the end of the second optical fiber core wire.
  • the first ferrule is inserted into the sleeve from one end of the sleeve
  • the second ferrule is inserted into the sleeve from the other end of the sleeve.
  • the first optical fiber core wire and the second optical fiber are optically connected to each other.
  • the end face of the first ferrule is not in contact with the end face of the second ferrule facing the end face of the first ferrule, and there is a gap between the end face of the first ferrule and the end face of the second ferrule. Is formed.
  • the length of the gap is 300 ⁇ m or less.
  • the length of the sleeve is D1
  • the sum of the lengths of the first ferrule and the second ferrule in the first and second ferrules inserted into the sleeve is D2, 0 ⁇ D1-D2 ⁇ 300 ⁇ m. .
  • This provides an optical connector that enables optical connection between optical fibers with high accuracy without the ferrules attached to the ends of the pair of optical fibers contacting each other.
  • An example of a device on which an optical connector is mounted is an endoscope, for example, and in this case, the optical connector is arranged inside an operation unit of the endoscope.
  • the second optical fiber core wire extends in the insertion portion from the operation portion to the illumination portion disposed at the distal end portion of the endoscope insertion portion.
  • the second optical fiber core wire receives the laser beam emitted from the light source and guided by the first optical fiber core wire at the optical connector, and guides it to the illumination unit.
  • the illumination unit emits illumination light based on the laser light.
  • the insertion part may be removed from the operation part for maintenance.
  • the second optical fiber core wire in the insertion portion is pulled toward the insertion portion in accordance with the movement of the insertion portion, so that the ferrule may come off the sleeve and the second optical fiber core wire may come out of the ferrule.
  • the laser beam guided by the 1st optical fiber core wire may leak from an optical connector.
  • the laser light leaking from the optical connector leaks to the outside of the operation unit, thereby affecting the endoscope operator or affecting other members provided in the operation unit. Therefore, the safety of the endoscope may be impaired.
  • the present invention has been made in view of these circumstances, and an object thereof is to provide an optical connector capable of ensuring safety and a light source device using the optical connector.
  • One aspect of the optical connector of the present invention is a first holding member that holds a first light guide member having an emission end face that emits primary light, and an incident end face on which the primary light emitted from the emission end face is incident.
  • a second holding member that holds the second light guide member, and the second holding member and the first holding member facing each other so that the incident end face is optically connected to the exit end face.
  • connection unit that holds at least the emission end face, is held coaxially with the held emission end face, and the first holding member is attached to the connection unit, and the second holding member is the The primary light is shielded when the primary light is emitted from the emission end face in a state where the primary light is not attached from the connection unit, and the second holding member is connected to the connection unit and the light shielding part.
  • the connection Comprising a removable region portion provided between the connecting unit and the light shielding portion in order to be detachable from the unit.
  • an optical connector capable of ensuring safety and a light source device using the optical connector can be provided.
  • FIG. 1 is a schematic diagram of an endoscope system according to the first embodiment of the present invention.
  • FIG. 2A is a schematic diagram of a light source device using the optical connector according to the first embodiment.
  • FIG. 2B is a diagram illustrating a state in which the light blocking portion of the optical connector blocks the primary light.
  • FIG. 3A is a perspective view of a ferrule that holds the first holding member.
  • FIG. 3B is a perspective view showing a state in which the ferrule shown in FIG. 3A is placed on the first fixing member and covered with the second fixing member.
  • 3C is a perspective view of a fixing portion in which the second fixing member shown in FIG. 3B is fixed to the first fixing member and includes the ferrule shown in FIG. 3A.
  • FIG. 4A is a side view of a second holding member and a connection unit according to a modification of the first embodiment.
  • FIG. 4B is a diagram of the connection unit viewed from the arrow 4B illustrated in FIG. 4A.
  • 4C is a cross-sectional view of the connection unit taken along line 4C-4C shown in FIG. 4A.
  • FIG. 5 is a schematic view of a light source device according to the second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a light source device according to a modification of the second embodiment.
  • An endoscope system 10 as shown in FIG. 1 is provided, for example, in an examination room or an operating room.
  • the endoscope system 10 is an image (not shown) that performs image processing on an image of the endoscope 20 that is imaged by an imaging unit (not shown) of the endoscope 20 and an endoscope 20 that images the inside of the channel such as a patient's lumen.
  • a control device 30 having a processing unit.
  • the endoscope system 10 is connected to the control device 30 and emits a primary light PL for illumination light emitted from the display device 40 that displays an image processed by the image processing unit and the endoscope 20.
  • a light source device 50 (see FIG. 2A). The illumination light is emitted for imaging.
  • the endoscope 20 functions as, for example, an insertion device that is inserted into the duct portion.
  • the endoscope 20 may be a direct-view type endoscope or a side-view type endoscope.
  • the endoscope 20 of the present embodiment will be described as a medical endoscope 20, for example, but is not limited thereto.
  • the endoscope 20 may be an industrial endoscope inserted into a pipe section of an industrial product such as a pipe, or may be an insertion instrument such as a catheter having only an illumination section.
  • the endoscope 20 includes a hollow and elongated insertion portion 21 that is inserted into a duct portion, and an operation portion 23 that is connected to a proximal end portion of the insertion portion 21 and operates the endoscope 20.
  • the endoscope 20 includes a universal cord 25 that is connected to the operation unit 23 and extends from a side surface of the operation unit 23.
  • the insertion unit 21 includes an illumination unit (not shown) and an imaging element of an imaging unit (not shown).
  • the illumination unit and the image sensor are provided at the distal end of the insertion unit 21.
  • the illumination unit converts the optical characteristics of the primary light PL emitted from a light source 51 (see FIG. 2A), which will be described later, to generate illumination light as desired, and emits the illumination light outward.
  • the illumination unit may include, for example, a phosphor that absorbs the primary light PL and emits fluorescence (illumination light) having a wavelength different from the wavelength of the primary light PL.
  • the illumination unit may include a diffusion member that diffuses the primary light PL without converting the wavelength of the primary light PL.
  • the diffusing member emits diffused light (illumination light) having a spread angle wider than the spread angle of the primary light PL and having low coherence.
  • the imaging device images the reflected light from the subject illuminated with the illumination light, and outputs the reflected light to the image processing unit as an electrical signal.
  • the operation unit 23 includes a housing unit 23 a having a desired rigidity.
  • casing part 23a has heat dissipation.
  • the universal cord 25 has a connection portion 25 a that can be attached to and detached from the control device 30.
  • the connection unit 25a connects the endoscope 20 and the control device 30 to each other in a detachable manner.
  • the connection unit 25a is provided in order to transmit and receive data between the endoscope 20 and the control device 30.
  • the endoscope 20 is directly connected to the control device 30 via the universal cord 25 including the connecting portion 25a.
  • the universal cord 25 may be omitted, and the endoscope 20 may be a wireless type.
  • the endoscope 20 is connected to the control device 30 by a radio signal.
  • the endoscope system 10 includes a first light guide member 60 that guides the primary light PL emitted from the light source device 50.
  • the first light guide member 60 has an emission end face 61 that emits the guided primary light PL.
  • the endoscope system 10 includes a second light guide member 70 having an incident end surface 71 on which the primary light PL emitted from the emission end surface 61 is incident.
  • the second light guide member 70 guides the primary light PL incident from the incident end surface 71 to the illumination unit.
  • the first light guide member 60 is provided inside the operation unit 23.
  • the first light guide member 60 is optically connected to the light source 51 of the light source device 50.
  • the second light guide member 70 is provided inside the operation unit 23 and the insertion unit 21.
  • the second light guide member 70 is optically connected to the illumination unit.
  • the exit end face 61 faces the entrance end face 71 and has the same size as the entrance end face 71.
  • the exit end face 61 and the entrance end face 71 are flat or convex spherical surfaces.
  • the first light guide member 60 and the second light guide member 70 are, for example, optical fibers, the core diameter is 50 ⁇ m, the numerical aperture NA is 0.2, and the optical fibers are multimode optical fibers. is there.
  • the core diameter and the numerical aperture NA are not limited to the above.
  • the optical fiber is made of, for example, glass or plastic. Most of the optical fiber is covered with a cover layer (not shown) made of, for example, resin that protects the optical fiber. The most part of the optical fiber indicates, for example, a portion that is not held by a first holding member 110 and a second holding member 120 described later.
  • the first light guide member 60 and the second light guide member 70 can be bent as desired.
  • the light source device 50 includes a light source 51 that emits the primary light PL toward the first light guide member 60, and an emission end face 61 and an incident end face 71 optically with respect to each other. And an optical connector 100 to be connected.
  • the light source device 50 may further include a first light guide member 60, a second light guide member 70, and an illumination unit.
  • the light source 51 is mounted inside the housing portion 23 a of the operation unit 23.
  • the light source 51 includes a laser diode (not shown) that emits primary light PL having high coherence such as laser light, for example, blue laser light.
  • the center wavelength of the blue laser light is, for example, 445 nm.
  • the center wavelength of the laser light need not be limited to this.
  • the light source 51 has a lens (not shown) disposed in front of the laser diode.
  • the light source 51 has a receptacle (not shown) to which the first light guide member 60 is connected. In addition, not only a receptacle but a pigtail may be sufficient.
  • optical connector 100 As shown in FIGS. 2A and 2B, the optical connector 100 is mounted inside the housing portion 23 a of the operation unit 23.
  • the optical connector 100 includes a first holding member 110 that holds the first light guide member 60 having an emission end face 61 that emits the primary light PL, and an incident end face 71 on which the primary light PL emitted from the emission end face 61 is incident. And a second holding member 120 that holds the second light guide member 70 having The optical connector 100 holds the second holding member 120 and the first holding member 110 facing each other so that the incident end face 71 is optically connected to the outgoing end face 61, and holds at least the outgoing end face 61.
  • a connection unit 130 is included. Specifically, the connection unit 130 connects the second holding member 120 and the first holding member to each other, positions and fixes the second holding member 120 and the first holding member, and positions and fixes at least the emission end face 61. To do.
  • the optical connector 100 is held relative to the emission end face 61 held via the connection unit 130 and the first holding member 110, and via the connection unit 130 and the first holding member 110.
  • the light-shielding portion 160 is held coaxially with the held emission end face 61.
  • the first holding member 110 is attached to the connection unit 130, and the second light guide member 70 is secondly held even if the second holding member 120 is not attached or attached to the connection unit 130.
  • the primary light PL is shielded when the primary light PL is emitted from the emission end face 61 in a state where it has been removed from the member 120.
  • the second holding member 120 can be attached to and detached from the connection unit 130 from between the connection unit 130 and the light shielding unit 160, so that the detachable area 170 provided between the connection unit 130 and the light shielding unit 160 is provided.
  • first holding member 110 and second holding member 120 The configuration of the first holding member 110 is the same as the configuration of the second holding member 120. For this reason, the 1st holding member 110 is demonstrated as an example.
  • the shape and size of the first holding member 110 are the same as the shape and size of the second holding member 120.
  • the first holding member 110 is a separate body from the second holding member 120.
  • the first holding member 110 has, for example, a ferrule.
  • the first holding member 110 has a cylindrical shape, for example, a cylindrical shape.
  • the first holding member 110 has a through-hole portion (not shown) that is disposed on the central axis of the first holding member 110 and penetrates the first holding member 110.
  • the end portion of the first light guide member 60 on which the emission end face 61 is disposed is inserted into the through hole portion, and is fitted or adhered to the through hole portion.
  • the through hole portion is provided for the first holding member 110 to hold the first light guide member 60, and functions as a holding hole portion.
  • the first holding member 110 has an end portion of the first light guide member 60 on which the emission end surface 61 is arranged such that the emission end surface 61 is arranged on the same plane as the planar one end surface of the first holding member 110. Hold.
  • the edge of the first holding member 110 is formed in a tapered shape so that the diameter decreases from the other end surface of the first holding member 110 toward the one end surface in the axial direction of the first holding member 110.
  • Such one end face is formed by, for example, PC polishing.
  • One end surface is disposed on the light shielding portion 160 side, and the other end surface is disposed on the light source 51 side.
  • the other end surface is a flat surface.
  • the entire first holding member 110 functions as an insertion portion inserted into the sleeve 131 in order to be press-fitted into a sleeve 131 described later of the connection unit 130.
  • the maximum outer diameter of the first holding member 110 is larger than the inner diameter of the sleeve 131 because the first holding member 110 is press-fitted into the sleeve 131.
  • the entire length of the first holding member 110 is shorter than the length of the sleeve 131, and is preferably approximately half the length of the sleeve 131.
  • the second holding member 120 has an end portion of the second light guide member 70 on which the incident end surface 71 is disposed such that the incident end surface 71 is disposed on the same plane as the planar end surface of the second holding member 120. Hold.
  • the incident end face 71 abuts on the outgoing end face 61 and is optically connected to the outgoing end face 61.
  • One end surface of the second holding member 120 is disposed on the light source 51 side, and the other end surface of the second holding member 120 is disposed on the light shielding unit 160 side.
  • the other end surface is a flat surface.
  • the entire length of the second holding member 120 is shorter than the length of the sleeve 131, and is preferably approximately half the length of the sleeve 131.
  • the shape and size of the first holding member 110 and the second holding member 120 are not necessarily the same.
  • the lengths of the sleeves 131 may not be approximately half of the length of the sleeve 131, but the lengths may be different as long as the combined length does not exceed the length of the sleeve 131.
  • connection unit 130 As shown in FIGS. 2A and 2B, the connection unit 130 is disposed inside the housing portion 23a and is held by the housing portion 23a. Specifically, the connection unit 130 is positioned and fixed to the inner peripheral surface of the housing portion 23a.
  • the connection unit 130 includes a sleeve 131 into which the first holding member 110 and the second holding member 120 are inserted, and a fixing portion 133 that holds the sleeve 131 and is fixed to the inner peripheral surface of the housing portion 23a.
  • connection unit 130 is an attachment / detachment prevention unit that prevents the first holding member 110 and the second holding member 120 from being attached to and detached from the connection unit 130 from the side opposite to the attachable / detachable region 170 across the connection unit 130. 145.
  • the connection unit 130 presses the second holding member 120 toward the first holding member 110 against the first holding member 110 and the second holding member 120 included in the fixed portion 133, so that the incident end face 71. Is maintained toward the emission end face 61, and the optical connecting state between the emission end face 61 and the incident end face 71 is maintained.
  • the sleeve 131 has a cylindrical shape, for example, a cylindrical shape. Specifically, the sleeve 131 is disposed on the central axis of the sleeve 131 and has a through hole 131 a into which the first holding member 110 and the second holding member 120 are press-fitted. The through hole portion 131 a penetrates the sleeve 131 in the axial direction of the sleeve 131. The through hole 131a is provided for the sleeve 131 to hold the first holding member 110 and the second holding member 120, and functions as a holding hole.
  • the first holding member 110 is inserted into the sleeve 131 from one end portion of the sleeve 131 on the light source 51 side, and the second holding member 120 is inserted into the sleeve 131 from the other end portion of the sleeve 131 on the light shielding portion 160 side.
  • the second holding member 120 is inserted until the emission end face 61 and the incident end face 71 come into contact with each other.
  • the inner peripheral surface of the sleeve 131 is brought into close contact with the outer peripheral surface of the first holding member 110 functioning as the insertion portion and the outer peripheral surface of the second holding member 120 functioning as the insertion portion by press-fitting.
  • the sleeve 131 is elastically deformed by inserting the first holding member 110 and the second holding member 120 into the sleeve 131, positions the emission end surface 61 and the incident end surface 71 by elastic deformation, and the first light guide member 60. And the second light guide member 70 are optically connected to each other. That is, the sleeve 131 presses and tightens the first holding member 110 and the second holding member 120 in the radial direction of the sleeve 131, and the sleeve 131 connects the first holding member 110 and the second holding member 120, for example.
  • the sleeve 131 is aligned in the radial direction, and the end portion (outgoing end face 61) of the first light guide member 60 and the end portion (incident end face 71) of the second light guide member 70 are arranged coaxially with each other.
  • the end face 61 and the incident end face 71 are optically connected to each other, and the sleeve 131 is elastically deformed, for example, in the radial direction during press-fitting so that the first light guide member 60 and the second light guide member 70 are connected to each other.
  • the sleeve 131 is expanded in diameter by elastic deformation.
  • the sleeve 131 is both a positioning member and a connecting member.
  • such a sleeve 131 is formed such that a part of the cross section of the sleeve 131 is cut away in order to promote the elastic deformation of the sleeve 131 depending on the elastic force of the sleeve 131 described above.
  • the sleeve 131 is press-fitted, a part of the cross section of the sleeve 131 is notched in order to weaken the force with which the sleeve 131 clamps one end of the first holding member 110 and one end of the second holding member 120 in the radial direction. Formed.
  • the sleeve 131 is formed as a substantially cylindrical member having a cross-section partially cut off in the axial direction.
  • This cross section is formed in a plane direction orthogonal to the axial direction of the sleeve 131.
  • this cross section is formed in C shape, for example.
  • the sleeve 131 is formed, for example, as a substantially cylindrical shape having a C-shaped cross section continuously in the axial direction.
  • the sleeve 131 is formed as a split sleeve with a part of a circle cut away.
  • the sleeve 131 has a slit 131b that is disposed along the axial direction of the sleeve 131 and penetrates the sleeve 131 in the axial direction.
  • the slit 131 b penetrates the sleeve 131 in the thickness direction of the sleeve 131.
  • the slit 131 b is formed by cutting out a part of the cross section of the sleeve 131.
  • the fixing portion 133 fixed to the housing portion 23 a is held by the first holding member 110 including the emission end surface 61 and the second end including the incident end surface 71 via the sleeve 131.
  • the holding member 120 is positioned and fixed with respect to the housing portion 23a.
  • the fixing part 133 includes the sleeve 131 by holding.
  • the fixing portion 133 includes, for example, a first fixing member 135 that is detachably fixed to the inner peripheral surface of the housing portion 23a, and a first fixing member 135 that is detachably attached to the first fixing member 135. 2 fixing members 137.
  • fixed part 133 is comprised by two parts.
  • the first fixing member 135 is fixed to the housing portion 23a by, for example, screwing or a joining member (not shown).
  • the first fixing member 135 may be integrated with the housing portion 23a in advance.
  • the second fixing member 137 is fixed to the first fixing member 135 by screwing, for example.
  • the configuration of the first fixing member 135 is the same as the configuration of the second fixing member 137. Therefore, the first fixing member 135 will be described as an example.
  • the shape and size of the first fixing member 135 are, for example, the same as the shape and size of the second fixing member 137.
  • the first fixing member 135 has a semi-cylindrical shape.
  • the first fixing member 135 has a U-shaped cross section formed in a plane direction orthogonal to the axial direction of the first fixing member 135. Therefore, an opening 135 a that communicates with the inside of the first fixing member 135 is disposed on the side surface of the first fixing member 135.
  • the sleeve 131 is disposed inside the first fixing member 135 through the opening 135a.
  • the first fixing member 135 has a first bottom portion 135b provided at one end portion disposed on the light source 51 side, and a second bottom portion 135c provided on the other end portion disposed on the light shielding portion 160 side.
  • the bottom portion 135b and the bottom portion 135c have a semicircular shape.
  • the bottom part 135b and the bottom part 135c have a semicircular opening part 135d and an opening part 135e.
  • the opening 135d and the opening 135e are arranged not on the center of the bottom 135b and the bottom 135c but on the center axis side of the fixed part 133.
  • the first opening 135d is disposed coaxially with the second opening 135e.
  • the diameter of the first opening 135 d is smaller than the inner diameter of the sleeve 131 and the outer diameter of the first holding member 110 and the second holding member 120, and larger than the diameter of the first light guide member 60.
  • the diameter of the second opening 135e is substantially the same as the inner diameter of the sleeve 131, the same as or larger than the outer diameter of the first holding member 110 and the second holding member 120, and larger than the diameter of the second light guide member 70. .
  • the opening portion of the second fixing member 137 is referred to as an opening portion 137a
  • the first bottom portion is referred to as a first bottom portion 137b
  • the second bottom portion is referred to as a second bottom portion 137c
  • the first opening portion is referred to as a first opening portion 137d
  • the second opening is referred to as a second opening 137e.
  • the first opening 137a and the second opening 137e are provided for convenience, and are not shown.
  • the opening 137a faces the opening 135a.
  • the first bottom portion 135b forms a bottom portion 139b having a circular shape together with the first bottom portion 137b
  • the first opening portion 135d forms a circular opening portion 139d together with the first opening portion 137d.
  • the second bottom portion 135c and the second bottom portion 137c form a bottom portion 139c having a circular planar shape
  • the second opening portion 135e forms a circular opening portion 139e together with the second opening portion 135e.
  • the bottom 139c and the opening 139e are provided for convenience, and are not shown.
  • the opening 139d and the opening 139e are larger than the diameters of the first light guide member 60 and the second light guide member 70.
  • a fixing portion 133 is formed, and the fixing portion 133 includes the sleeve 131.
  • the first light guide member 60 exposed from the first holding member 110 is inserted through the opening 139d and extended to the light source 51.
  • the length of the first light guide member 60 from the light source 51 to the first holding member 110 is equal to or longer than the length from the first holding member 110 to the light source 51. Good.
  • the second light guide member 70 exposed from the second holding member 120 is inserted through the opening 139e and extended to the illumination unit.
  • the length of the second light guide member 70 from the second holding member 120 to the illumination unit is longer than the length from the second holding member 120 to the illumination unit.
  • the second light guide member 70 has a length that can form a bent portion 73 for avoiding contact with the light shielding portion 160.
  • the attachment / detachment prevention unit 145 includes a bottom portion 139b formed by the first bottom portion 135b and the first bottom portion 137b. Since one end portion of the sleeve 131 and the other end portion of the first holding member 110 are in contact with the inner surface of the bottom portion 139b, detachment is prevented.
  • the maintenance part 147 is formed by an elastic member such as a leaf spring.
  • the maintenance part 147 includes an end part that is detachably fixed to the other end part of the first fixing member 135, and a locking part 147a that is detachably locked to the locking part 135g of the first fixing member 135. And an end.
  • the locking portion 135 g is a convex portion formed on the outer peripheral surface of the other end portion of the first fixing member 135.
  • the maintaining portion 147 is disposed between the one end portion and the other end portion, and comes into contact with the other end surface of the second holding member 120 when the locking portion 147a is locked to the locking portion 135g. 2
  • the maintenance part 147 is disposed on the first fixing member 135 so as to avoid the second light guide member 70 when the locking part 147a is locked to the locking part 135g.
  • the pressing portion 147b is in point contact with the other end surface, for example.
  • the light shielding unit 160 includes, for example, a planar plate member.
  • the light shielding portion 160 is held by the housing portion 23a to which the connection unit 130 is positioned and fixed. Specifically, the light shielding portion 160 is positioned and fixed to the inner peripheral surface of the housing portion 23a.
  • the light shielding unit 160 is fixed by screwing, for example.
  • the light-shielding part 160 is detachable from the inner peripheral surface of the housing part 23a, for example.
  • the second The light guide member 70 has a bending portion 73 for avoiding contact with the light shielding portion 160.
  • the bending portion 73 is a relief portion of the second light guide member 70. Even if the second light guide member 70 is pulled toward the insertion portion 21 in accordance with the movement of the insertion portion 21 when the second holding member 120 is attached to the connection unit 130, the bending portion 73 is not affected by the second guiding member 73. The optical member 70 is prevented from being caught by the light shielding portion 160.
  • the light shielding part 160 is prevented from being damaged and deformed by the second light guide member 70 being caught by the bent part 73 of the second light guide member 70, and maintains the light shielding property.
  • the bending portion 73 is provided to prevent the second light guide member 70 from contacting the light shielding portion 160 and preventing the second light guide member 70 from being worn by the contact.
  • connection unit 130 and the light shielding portion 160 are held by the housing portion 23 a, the first holding member 110 is attached to the connection unit 130, and the second holding member 120 is removed from the connection unit 130.
  • the light shielding unit 160 faces one end surface of the first holding member 110 including the emission end surface 61.
  • the planar direction of the light shielding part 160 is parallel to the planar direction of the emission end face 61.
  • the light shielding portion 160 is arranged along a direction intersecting the central axis of the emission end face 61, for example, a direction orthogonal thereto.
  • the connection unit 130 and the light shielding portion 160 are held by the housing portion 23 a, the first holding member 110 is attached to the connection unit 130, and the second holding member 120 is removed from the connection unit 130.
  • the light shielding unit 160 has a light receiving surface 161 that receives the primary light PL.
  • the light receiving surface 161 is a flat surface, faces the emission end surface 61, and is arranged on the same straight line as the emission end surface 61.
  • the light receiving surface 161 is disposed on the light source 51 side and is located on the surface of the light shielding unit 160.
  • the detachable area 170 is secured and the primary light PL is installed at the mounting position of the light shielding portion 160 with respect to the emission end face 61 held by the housing portion 23a via the connection unit 130 and the first holding member 110.
  • the spot diameter is smaller than the light receiving surface 161.
  • the spot diameter is proportional to the distance between the emission end face 61 and the light receiving surface 161 and corresponds to the spread angle of the primary light PL. With such an attachment position, the light receiving surface 161 receives the entire primary light PL emitted from the emission end face 61.
  • the light receiving surface 161 onto which the primary light PL is projected has a diameter proportional to the distance between the emission end surface 61 and the light receiving surface 161 and the spot diameter of the primary light PL projected onto the light receiving surface 161. Will have a wider area.
  • the attachment position of the light shielding portion 160 is adjusted as desired in consideration of the light receiving surface 161 and the detachable region portion 170.
  • the light shielding unit 160 is, for example, a flat light shielding cover.
  • the material of the light shielding unit 160 is, for example, a metal such as copper or stainless steel. Due to the material of the light shielding part 160, heat is diffused throughout the light shielding part 160, and a local temperature rise of the light shielding part 160 is prevented.
  • the light-shielding part 160 fixed to the housing part 23a by screwing converts the primary light PL received by the light receiving surface 161 into heat, and transmits the converted heat to the housing part 23a. For this reason, heat is transmitted from the light shielding portion 160 to the entire housing portion 23a. Thereby, the temperature rise of the local site
  • the light shielding unit 160 includes an absorbing member 163 that is provided on the light receiving surface 161 and absorbs part of the primary light PL.
  • the absorbing member 163 absorbs 99% or more of the primary light PL.
  • the absorbing member 163 may be colored, for example, black in order to promote absorption.
  • the absorbing member 163 may be, for example, a cover member made of anodized aluminum.
  • the primary light PL absorbed by the absorbing member 163 is transmitted to the casing unit 23a as heat through the light shielding unit 160.
  • the material or thickness of the absorbing member 163 is appropriately set.
  • the light shielding unit 160 can reduce the generation of reflected light by the absorbing member 163.
  • the light shielding unit 160 may include a reflecting member that is provided on the light receiving surface 161 and reflects a part of the primary light PL.
  • the reflecting member is, for example, a mirror.
  • the reflecting member reflects the primary light PL toward the inner peripheral surface of the housing portion 23a. A portion of the primary light PL that is not reflected is transmitted to the casing 23 a as heat through the light shielding portion 160.
  • the light shielding unit 160 may include a scattering member that is provided on the light receiving surface 161 and that scatters a part of the primary light PL.
  • the scattering member is, for example, a mirror. The scattering member scatters the primary light PL toward the inner peripheral surface of the housing portion 23a. A part of the primary light PL that is not scattered is transmitted to the housing part 23a as heat through the light shielding part 160.
  • the light shielding portion 160 itself may function as at least one of the absorbing member 163, the reflecting member, and the scattering member, or at least one of the absorbing member 163, the reflecting member, and the scattering member that are separate from the light shielding portion 160.
  • One may be provided on the light receiving surface 161.
  • the light shielding unit 160 is provided on the opposite side of the light shielding surface 160 from the light receiving surface 161 with the light shielding unit 160 interposed therebetween, and heat generated by the light shielding unit 160 is generated by the light shielding unit 160. It has a heat diffusion member 165 that diffuses throughout.
  • the heat diffusion member 165 is disposed on the insertion portion 21 side and is attached to the entire back surface of the light shielding portion 160.
  • the heat diffusing member 165 diffuses heat throughout the light shielding part 160, thereby preventing a local temperature rise of the light shielding part 160.
  • the heat diffusion member 165 promotes heat transfer from the light shielding part 160 to the housing part 23a, and prevents the light shielding part 160 from being deteriorated by heat.
  • the heat diffusing member 165 may dissipate heat into the housing portion 23a.
  • the detachable region portion 170 indicates a gap portion between the light shielding portion 160 and the second bottom portion 135c and the second bottom portion 137c, for example.
  • the detachable region portion 170 includes, for example, a portion facing the second bottom portion 135c and the second bottom portion 137c, and the second bottom portion 135c and the second bottom portion 137c.
  • the gap part between is shown.
  • the part is, for example, the inner peripheral surface of the housing portion 23a.
  • the detachable region 170 is longer than the second holding member 120.
  • the length of the detachable area 170 is twice the length of the second holding member 120.
  • the second holding member 120 can be attached to and detached from the connection unit 130 fixed to the housing portion 23 a without contacting the light shielding portion 160 by such a length relationship and the mounting position of the light shielding portion 160 described above. It becomes.
  • the 2nd holding member 120 may be attached to the connection unit 130 in the state from which the light-shielding part 160 was removed from the housing
  • the entire first holding member 110 that holds the first light guide member 60 is inserted into the sleeve 131 from one end of the sleeve 131.
  • the sleeve 131 holds the first holding member 110.
  • the sleeve 131 is placed on a first fixing member 135 that is fixed to the housing portion 23a.
  • the sleeve 131 is placed on the inner peripheral surface of the first fixing member 135 through the opening 135a.
  • the second fixing member 137 is fixed to the first fixing member 135 so that the second fixing member 137 covers the sleeve 131.
  • the fixing portion 133 is formed, and the fixing portion 133 includes the sleeve 131.
  • the first light guide member 60 is inserted through the opening 139d.
  • the first bottom portion 135b and the first bottom portion 137b form a detachment preventing portion 145 that functions as the bottom portion 139b.
  • the attachment / detachment prevention portion 145 is disposed on the opposite side of the attachment / detachment region portion 170 with the connection unit 130 interposed therebetween. That is, the attachment / detachment prevention unit 145 is disposed on the light source 51 side.
  • the first holding member 110 is prevented from coming out to the light source 51 side in the connection unit 130 by the contact of the first holding member 110 with the attachment / detachment preventing portion 145.
  • the entire second holding member 120 that holds the second light guide member 70 is inserted into the sleeve 131 included in the fixing portion 133 through the detachable region 170 and the opening 139e.
  • the entire second holding member 120 may be inserted in advance into the sleeve 131 before being included in the fixing portion 133.
  • the sleeve 131 into which the entire first holding member 110 and the entire second holding member 120 are inserted is placed on the first fixing member 135, and the second fixing member 137 covers the sleeve 131 so that the second fixing member 137 covers the sleeve 131. 137 is fixed to the first fixing member 135.
  • the second holding member 120 is also prevented from coming off to the light source 51 side in the connection unit 130.
  • the pressing part 147b presses the second holding member 120 toward the first holding member 110, and the locking part 147a is locked to the locking part 135g.
  • the emission end face 61 and the incident end face 71 are positioned and fixed by the connection unit 130, the first holding member 110, and the second holding member 120.
  • the pressing portion 147b of the maintaining portion 147 presses the first holding member 110 and the second holding member 120 against the bottom portion 139b.
  • the first holding member 110 and the second holding member 120 are prevented from coming off to the light shielding portion 160 side in the connection unit 130 by the maintaining portion 147.
  • the second holding member 120 When the endoscope 20 is assembled, the second holding member 120 may not be attached yet. This also indicates, for example, that the second holding member 120 has been removed.
  • the insertion unit 21 may be removed from the operation unit 23 during maintenance of the endoscope 20. At this time, the second holding member 120 is removed from the connection unit 130.
  • the second light guide member 70 is pulled in accordance with the movement of the insertion portion 21, and the locking portion 147a is removed from the locking portion 135g at an unintended timing.
  • the holding member 120 may be removed from the connection unit 130 at an unintended timing.
  • the second light guide member 70 may come off from the second holding member 120. .
  • the emission end face 61 and the incident end face 71 are not optically connected.
  • the emission end face 61 since the emission end face 61 is positioned and fixed, the emission direction of the primary light PL is fixed, and the light shielding portion 160 is provided coaxially with the emission end face 61. For this reason, even if the emission end face 61 and the incident end face 71 are not optically connected, even if the light source 51 is accidentally turned on and the primary light PL leaks from the emission end face 61, the primary light PL is The light shielding unit 160 is surely irradiated and is shielded by the light shielding unit 160.
  • the absorbing member 163 absorbs 99% or more of the primary light PL, for example.
  • the primary light PL absorbed by the absorbing member 163 is transmitted to the light shielding unit 160, converted into heat by the light shielding unit 160, and transmitted to the housing unit 23a via the light shielding unit 160. Due to the material of the light shielding part 160, heat is diffused throughout the light shielding part 160, and a local temperature rise of the light shielding part 160 is prevented. The heat is diffused by the heat diffusing member 165 throughout the light shielding portion 160, and a local temperature rise of the light shielding portion 160 is prevented.
  • the heat diffusion member 165 promotes heat transfer from the light shielding part 160 to the housing part 23a, and prevents the light shielding part 160 from being deteriorated by heat.
  • the housing part 23a releases heat.
  • part or all of the absorbing member 163 may be changed to a reflecting member or a scattering member. In this case, it is preferable to reduce reflection to other parts by disposing an absorbing member on the inner peripheral surface of the housing portion 23a.
  • the removable region 170 is longer than the second holding member 120 in the optical axis direction. 2
  • the holding member 120 is prevented from being caught by the light shielding portion 160. Further, for example, it is not necessary to insert the second holding member 120 into the sleeve 131 in a state where the light shielding portion 160 is bent. That is, the light-shielding portion 160 is prevented from being damaged and deformed by the insertion operation of the second holding member 120 by the removable region portion 170, and the light-shielding property is maintained.
  • the light shielding portion 160 is detachable from the housing portion 23a. For this reason, when the light shielding portion 160 is removed from the housing portion 23a, the detachable region portion 170 is expanded, and the second holding member 120 is more easily inserted into the sleeve 131 again.
  • the light shielding portion 160 is coaxial with the held emission end face 61. Since it is held, the primary light PL can be reliably shielded by the light shielding portion 160. Since the detachable region portion 170 is provided, damage and deformation of the light shielding portion 160 due to the insertion operation of the second holding member 120 can be prevented, and the light shielding performance of the light shielding portion 160 can be maintained. Thereby, the safety
  • the attachment / detachment prevention unit 145 can prevent the first holding member 110 and the second holding member 120 from being attached to and detached from the connection unit 130 from the light source 51 side. Then, the emission end face 61 can be optically connected to the incident end face 71 only by inserting the second holding member 120 into the connection unit 130.
  • the light shielding unit 160 converts the primary light PL into heat, and transmits the converted heat to the housing unit 23a. For this reason, heat can be dissipated in the entire housing portion 23a.
  • the heat diffusing member 165 can diffuse the heat to the entire light shielding part 160, and the local temperature rise of the light shielding part 160 can be prevented. For this reason, the heat diffusing member 165 can prevent destruction of the light shielding part 160 due to heat, and can maintain the light shielding property of the light shielding part 160.
  • the absorption member 163 can improve the conversion efficiency when the light shielding unit 160 converts the primary light PL into heat.
  • the reflection member or the scattering member can reduce the conversion amount when the light shielding unit 160 converts the primary light PL into heat, can prevent the light shielding unit 160 from being destroyed by heat, and can prevent the light shielding unit 160 from being deteriorated by heat.
  • the light shielding property of the light shielding unit 160 can be maintained.
  • the light receiving surface 161 has an area wider than the spot diameter of the primary light PL. Therefore, the light receiving surface 161 can reliably receive all the primary light PL, and the light shielding unit 160 can reliably shield light.
  • the detachable region 170 is longer than the second holding member 120. For this reason, it can prevent that the 2nd holding member 120 is caught in the light-shielding part 160 by insertion operation
  • the second light guide member 70 has a bending portion 73. For this reason, when the 2nd holding member 120 is attached to the connection unit 130, it can prevent that the 2nd light guide member 70 is caught by the light-shielding part 160. FIG. That is, the light shielding part 160 can prevent damage and deformation by the second light guide member 70 by the bending part 73 of the second light guide member 70, and can maintain the light shielding property.
  • the light shielding part 160 is detachable from the housing part 23a, and the second holding member 120 may be attached to the connection unit 130 in a state where the light shielding part 160 is detached from the housing part 23a. For this reason, the detachable area
  • the maintenance unit 147 presses the incident end surface 71 toward the emission end surface 61 by pressing the second holding member 120 toward the first holding member 110, and optically connects the incident end surface 71 and the emission end surface 61. maintain. Thereby, the loss of the primary light PL in the optical connection can be reduced.
  • the maintenance part 147 has an elastic member. For this reason, it is possible to relieve the load on the incident end face 71 and the outgoing end face 61 caused by pressing, and it is possible to prevent the incident end face 71 and the outgoing end face 61 from being damaged by pressing.
  • connection unit 130 and the light-shielding part 160 are hold
  • the emission end face 61 faces the incident end face 71 in the optical axis direction, and is in direct contact with the incident end face 71.
  • the incident end face 71 may be optically connected to the outgoing end face 61 in a state where the outgoing end face 61 faces the incident end face 71 in the optical axis direction.
  • the output end face 61 may be separated from the incident end face 71 in the optical axis direction, and a space (not shown) may be disposed between the output end face 61 and the incident end face 71 in the optical axis direction.
  • the member which is not illustrated may exist somewhere in this space part, and a member may be arrange
  • the member is, for example, a transparent member that can transmit the primary light PL.
  • the member may diffuse the primary light PL or condense the primary light PL on the incident end face 71.
  • the number of members is not particularly limited.
  • the emission end face 61 may face the incident end face 71 via at least one of the member and the space portion in the optical axis direction. In the above description, the relationship between the emission end surface 61 and the incident end surface 71 has been described. The same applies to the relationship between the first holding member 110 and the second holding member 120.
  • the first holding member 110 may face the second holding member 120 via at least one of the member and the space in the optical axis direction. Then, the connection unit 130 maintains the first holding member 110 and the second holding member so that the opposite of the emission end surface 61 and the incident end surface 71 and the opposite of the first holding member 110 and the second holding member 120 are maintained.
  • the member 120 is held. In the present embodiment, it is only necessary that the exit end face 61 and the entrance end face 71 are opposed to each other. For example, when the second holding member 120 is removed and the member through which the primary light PL can be transmitted remains, the light shielding unit 160 shields the primary light PL that has passed through the member.
  • the second holding member 120 in this modification has a protrusion 121 disposed on the outer peripheral surface of the second holding member 120.
  • the connection unit 130 has a fitting portion 151 into which the protruding portion 121 is fitted.
  • the fitting portion 151 includes a slit 131 c formed in the sleeve 131 and a groove portion 137 h formed on the inner peripheral surface of the second fixing member 137, for example.
  • the slit 131c penetrates the sleeve 131 in the thickness direction of the sleeve 131, is a part different from the slit 131b, and is continuous with the groove portion 137h.
  • the protrusion 121 can slide in the slit 131c and the groove 137h.
  • the slit 131c and the groove portion 137h have the same outer shape, and are formed in an L shape, for example.
  • the slit 131c and the groove part 137h are disposed on the light shielding part 160 side.
  • the second holding member 120 is fixed to the connection unit 130 by the protrusion 121 being fitted into the fitting portion 151.
  • the second holding member 120 can be fitted to the connection unit 130 by the protrusion 121 and the fitting portion 151, and the optical connection between the emission end face 61 and the incident end face 71 can be further maintained.
  • the protrusion 121 and the fitting portion 151 can prevent the second holding member 120 from being unintentionally detached from the connection unit 130.
  • the light source device 50 includes an optical connector 100, a light source 51 that emits the primary light PL toward the first light guide member 60, and a detection unit that detects whether or not the light shielding unit 160 is attached to the housing unit 23a. 181.
  • the detection unit 181 is provided in the housing unit 23a, for example.
  • the light source device 50 controls the light source 51 to be ON when the detection unit 181 detects that the light shielding unit 160 is attached to the housing unit 23a, and detects that the light shielding unit 160 has been removed from the housing unit 23a.
  • the control unit 183 controls the light source 51 to be turned off when the unit 181 detects it.
  • the detection unit 181 always outputs the detection result to the control unit 183.
  • the detection unit 181 is connected to the control unit 183 by wire or wireless.
  • the detection unit 181 detects whether or not the light shielding unit 160 is attached to the housing unit 23a, but is not limited thereto.
  • the detection unit 181 may detect whether or not the housing unit 23a is attached to a part to which the light shielding unit 160 is attached.
  • the light source device 50 of the present modification includes a detection unit 191 that is provided on the light receiving surface 161 of the light shielding unit 160 that receives the primary light PL, and detects the primary light PL, instead of the detection unit 181.
  • the detection unit 191 always outputs the detection result to the control unit 183.
  • the detection unit 191 is connected to the control unit 183 by wire or wireless.
  • the detection unit 191 detects the light amount of the primary light PL by receiving the primary light PL.
  • the detection unit 191 includes, for example, a photodiode.
  • control unit 183 controls the ON or OFF of the light source 51 according to the detection result of the detection unit 191.
  • the control unit 183 controls ON or OFF of the light source 51 by comparing a preset threshold value with a detection result. For example, when the detected light amount is equal to or greater than the threshold value, the control unit 183 controls the light source 51 to be OFF, and when the detected light amount is equal to or less than the threshold value, the control unit 183 controls the light source 51 to be ON.
  • the threshold value corresponds to the amount of light that the primary light PL leaking from the emission end face 61 illuminates the detection unit 191 when the light source 51 is on with the second holding member 120 not attached to the connection unit 130.
  • the value to be The threshold value may be a value corresponding to the light amount of the primary light PL that illuminates the detection unit 191 before the light shielding unit 160 burns.
  • control unit 183 controls the light source 51 to be ON when the detection unit 191 does not detect the primary light having the light amount equal to or smaller than the threshold value, and detects the primary light having the light amount equal to or larger than the threshold value. Is detected, the light source 51 is controlled to be OFF.
  • the detection unit 191 may include a thermocouple that detects the temperature in the light shielding unit 160. For example, when the detected temperature is equal to or higher than the threshold value, the control unit 183 controls the light source 51 to be OFF, and when the detected temperature is equal to or lower than the threshold value, the control unit 183 controls the light source 51 to be ON.
  • the detection unit 191 is configured to detect the primary light PL by detecting the temperature, the detection unit 191 does not need to be disposed on the light receiving surface 161 of the light shielding unit 160 that receives the primary light PL.
  • the light shielding portion 160 can be provided at a portion other than the light receiving surface 161.
  • the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment.
  • the light source 51 and the control unit 183 in the light source device 50 may be arranged in a housing separate from the housing unit 23a of the operation unit 23 in which the optical connector 100 and the light shielding unit 160 are arranged.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

Un connecteur optique (100) possède une section de blocage de lumière (160), qui est maintenue sur le même axe que celui d'une surface d'extrémité de sortie (61) qui est en train d'être maintenue, et qui bloque une lumière primaire lorsque la lumière primaire est émise depuis la surface d'extrémité de sortie (61) dans un état dans lequel un premier élément de maintien (110) est fixé à une unité de connexion (130), et un deuxième élément de maintien (120) n'est pas fixé à l'unité de connexion (130). Le connecteur optique (100) possède une région pouvant être attachée/détachée (170), permettant d'attacher le deuxième élément de maintien (120) sur l'unité de connexion (130) et de l'en détacher, entre l'unité de connexion (130) et la section de blocage de lumière (160), ladite section de région pouvant être attachée/détachée étant disposée entre l'unité de connexion (130) et la section de blocage de lumière (160).
PCT/JP2015/074245 2015-08-27 2015-08-27 Connecteur optique et dispositif à source lumineuse WO2017033333A1 (fr)

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PCT/JP2015/074245 WO2017033333A1 (fr) 2015-08-27 2015-08-27 Connecteur optique et dispositif à source lumineuse
JP2017536152A JPWO2017033333A1 (ja) 2015-08-27 2015-08-27 光コネクタ及び光源装置

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149703U (ja) * 1982-03-31 1983-10-07 旭光学工業株式会社 伝送用フアイバ−のトラブル検出安全装置
JPH0675142A (ja) * 1992-08-25 1994-03-18 Yamaichi Electron Co Ltd 光コネクタ
JP2001133662A (ja) * 1999-11-10 2001-05-18 Nec Corp レーザ光通信用接続装置
JP2001184694A (ja) * 1999-12-27 2001-07-06 Sankyo Seiki Mfg Co Ltd 光ピックアップ装置および光源ユニット
JP2003004970A (ja) * 2001-06-22 2003-01-08 Fuji Xerox Co Ltd 光配線装置
JP2005168529A (ja) * 2003-12-05 2005-06-30 Olympus Corp 内視鏡
JP2013138086A (ja) * 2011-12-28 2013-07-11 Nichia Chem Ind Ltd 光源装置
JP2014059535A (ja) * 2012-09-19 2014-04-03 Olympus Corp 光結合部構造

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225214A (en) * 1978-09-18 1980-09-30 Trw Inc. Connector construction
JP2013167735A (ja) * 2012-02-15 2013-08-29 Honda Tsushin Kogyo Co Ltd 光コネクタプラグ

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149703U (ja) * 1982-03-31 1983-10-07 旭光学工業株式会社 伝送用フアイバ−のトラブル検出安全装置
JPH0675142A (ja) * 1992-08-25 1994-03-18 Yamaichi Electron Co Ltd 光コネクタ
JP2001133662A (ja) * 1999-11-10 2001-05-18 Nec Corp レーザ光通信用接続装置
JP2001184694A (ja) * 1999-12-27 2001-07-06 Sankyo Seiki Mfg Co Ltd 光ピックアップ装置および光源ユニット
JP2003004970A (ja) * 2001-06-22 2003-01-08 Fuji Xerox Co Ltd 光配線装置
JP2005168529A (ja) * 2003-12-05 2005-06-30 Olympus Corp 内視鏡
JP2013138086A (ja) * 2011-12-28 2013-07-11 Nichia Chem Ind Ltd 光源装置
JP2014059535A (ja) * 2012-09-19 2014-04-03 Olympus Corp 光結合部構造

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