WO2012160878A1 - 光コネクタ - Google Patents

光コネクタ Download PDF

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Publication number
WO2012160878A1
WO2012160878A1 PCT/JP2012/058986 JP2012058986W WO2012160878A1 WO 2012160878 A1 WO2012160878 A1 WO 2012160878A1 JP 2012058986 W JP2012058986 W JP 2012058986W WO 2012160878 A1 WO2012160878 A1 WO 2012160878A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical connector
optical fiber
optical
housing
resin joint
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2012/058986
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
鈴木　等
小林　武
岩元　淳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Pencil Co Ltd
Original Assignee
Mitsubishi Pencil Co Ltd
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 Mitsubishi Pencil Co Ltd filed Critical Mitsubishi Pencil Co Ltd
Priority to CN201280026036.6A priority Critical patent/CN103582835B/zh
Priority to US14/116,989 priority patent/US9195016B2/en
Priority to EP12789993.8A priority patent/EP2717078A4/en
Publication of WO2012160878A1 publication Critical patent/WO2012160878A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • 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
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3853—Lens inside the ferrule
    • 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
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • G02B6/3878—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules comprising a plurality of ferrules, branching and break-out means
    • G02B6/3879—Linking of individual connector plugs to an overconnector, e.g. using clamps, clips, common housings comprising several individual connector plugs
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device

Definitions

  • the present invention relates to an optical connector using an optical collimator.
  • JP 2007-241094 A Japanese Patent Application Publication No. 2003-270487
  • the size is small in terms of shape, and the positional relationship between the optical fiber and the collimator lens is maintained even if insertion and removal are repeated on the device surface Is required.
  • the present invention has been made in view of such a point, and it is an object of the present invention to provide an optical connector capable of aligning a collimator lens and an optical fiber with high accuracy without requiring a complicated assembly process. Do.
  • a storage member for housing the collimator lens is formed at one end, a holding member having an insertion hole for inserting the optical fiber at the other end, and the first holding member inserted at one end
  • An optical connector comprising: a resin joint having an insertion hole formed therein and a second insertion hole formed at the other end into which the optical fiber is inserted, the optical connector being formed in the vicinity of the storage portion of the holding member At least one of the collimator lens and the end face of the optical fiber is brought into contact with the depressed portion to perform positioning, and the resin joint is positioned on the holding member inserted through the first insertion hole.
  • a fixing portion for fixing a part of the optical fiber exposed from the holding member is formed.
  • the collimator lens and the optical fiber since at least one of the collimator lens and the optical fiber is positioned in contact with the depression provided in the holding member, the collimator lens and / or the optical fiber is positioned with reference to the depression. Therefore, the working efficiency can be improved as compared with the conventional case where another part is inserted into the holding member, and the positioning of the collimator lens and the optical fiber can be easily performed while suppressing the increase in cost. It is possible to do Further, since the optical fiber is fixed by the fixing portion formed on the resin joint to assemble the optical connector, the optical connector can be easily assembled with a small number of parts. As a result, the collimator lens and the optical fiber can be aligned with high accuracy without requiring a complicated assembly process.
  • the resin joint is provided with a positioning portion for positioning an end portion of the holding member on the insertion hole side, and the optical fiber is fixed at a position near the positioning portion.
  • the positioning portion of the holding member is provided, the holding member can be easily positioned when the holding member is inserted into the resin joint. Furthermore, since the optical fiber is fixed at a position near the positioning portion, the optical fiber can be reliably fixed.
  • the optical connector it is preferable to provide a plurality of the fixing portions on the same circumference of the resin joint. In this case, since the optical fiber can be fixed at a plurality of positions on the same circumference, the optical fiber can be reliably fixed.
  • a plurality of annular convex portions for holding a jacket for protecting the optical fiber be provided at intervals on the outer periphery of the resin joint.
  • the jacket for covering the optical fiber can be effectively fixed without increasing the number of parts.
  • the optical connector it is preferable to provide an engaged portion which engages with the engaging portion on the device side when connected to the device, on the outer periphery of the resin joint.
  • the connection between the optical connector and the device can be made favorable.
  • the optical connector it is preferable to provide an annularly projecting collar portion which can be inserted into the device to the connection position on the outer periphery of the resin joint.
  • the hook portion since the hook portion enables insertion to the connection position with respect to the device, the optical connector can be positioned at a predetermined position in the device.
  • the optical connector is juxtaposed to a housing in which a plurality of through holes, each having an insertion hole having substantially the same diameter as the outer diameter of the collar and an opening smaller than the outer diameter of the collar, are formed. It is preferable that a plurality of these are attached. In this case, it is possible to easily engage the housing with the resin joint and to construct a large-capacity communicable optical connector in which a plurality of optical connectors are mounted without requiring a dedicated part.
  • the optical connector includes a housing having an insertion area for inserting the optical connector so as to expose the resin joint in the optical connector, and attaching the optical connector to the housing in the insertion direction of the optical connector. It is preferable to have a biasing spring.
  • the optical connector mounted in the housing is configured to be movable within a predetermined range, it is possible to absorb the misalignment of the shaft center when it is coupled with the device, and a complicated alignment operation is required. It becomes possible to align the collimator lens and the optical fiber with high accuracy without setting the distance.
  • the housing has an engaged portion that engages with an engaging portion provided on the device when the optical connector is attached to the device.
  • the engaged portion and the engaging portion engage with each other, so that it is possible to securely fix the optical connector to the device by preventing the positional deviation between the two. It becomes.
  • the housing has a stopper extending inward at an opening on the tip side in the insertion direction in the insertion area, and the stopper inserts the optical connector. It is preferable to contact
  • the optical connector mounted on the housing can be configured to be movable within a predetermined range with a simple configuration.
  • an elastic member be disposed between the outer peripheral surface of the resin joint and the inner peripheral surface of the stopper.
  • the optical connector mounted on the housing can be configured to be movable within a predetermined range with a simple configuration.
  • the optical connector mounted on the housing can be configured to be movable within a predetermined range with a simple configuration.
  • a storage member for housing the collimator lens is formed at one end, and a holding member having an insertion hole for inserting an optical fiber at the other end, and the holding member inserted at one end
  • An optical connector comprising: a resin joint in which n first insertion holes are formed (n is an integer of 2 or more) and n second insertion holes into which the optical fiber is inserted at the other end are formed And positioning at least one of the end faces of the collimator lens and the optical fiber in contact with a depressed portion formed in the vicinity of the holding portion of the holding member, and the first insertion hole in the resin joint Among the n optical fibers positioned on the n holding members inserted through the two, a fixing portion for fixing a part exposed from the holding members is formed.
  • optical connector since it is possible to configure a large-capacity communicable optical connector on which a plurality of optical fibers are mounted with a small number of parts, simplification and cost reduction of the manufacturing process can be realized.
  • the optical fiber is preferably a plastic optical fiber.
  • the optical fiber can be crimped and fixed, and the number of parts can be reduced.
  • At least one of the collimator lens and the optical fiber is positioned in contact with the depression provided in the holding member, so that the collimator lens and / or the optical fiber is positioned with reference to the depression. Therefore, as compared with the conventional case where a separate part is inserted into the holding member as in the conventional case, the working efficiency can be improved, and the cost between the collimator lens and the optical fiber can be easily reduced while suppressing the increase in cost. It becomes possible to perform positioning. Further, since the holding member is press-fitted to the resin joint and the optical fiber is crimped and fixed to assemble the optical connector, the optical connector can be easily assembled with a small number of parts. As a result, the collimator lens and the optical fiber can be aligned with high accuracy without requiring a complicated assembly process.
  • FIG. 1 is a cross-sectional view of an optical connector according to a first embodiment of the present invention.
  • FIG. 3A is a top view of the resin joint in the first embodiment
  • FIG. 3B is a cross-sectional view of the resin joint in the first embodiment.
  • It is a side view of the optical collimator in a 1st embodiment.
  • FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. 4; It is an enlarged view in the dashed-two dotted line B shown in FIG. It is explanatory drawing which shows the assembly process of the optical connector which concerns on 1st Embodiment.
  • FIG. 11A is a top view of the optical connector according to the second embodiment
  • FIG. 11B is a cross-sectional view of the optical connector according to the second embodiment
  • 12A is a top view of the optical connector according to the third embodiment
  • FIG. 12B is a cross-sectional view of the optical connector according to the third embodiment.
  • FIG. 12B is a cross-sectional view taken along the line CC shown in FIG. 12A.
  • FIG. 14A is a top view of the optical connector according to the fourth embodiment
  • FIG. 14B is a cross-sectional view of the optical connector. It is sectional drawing which shows the other structural example of the optical connector which concerns on 4th Embodiment. It is sectional drawing which shows the modification of the optical connector which concerns on 4th Embodiment.
  • FIG. 1 is a cross-sectional view schematically showing a state in which the optical connector according to the present invention is connected to a device.
  • FIG. 1 for convenience of explanation, a device provided with a light receiving / emitting element will be described, but the configuration of the device is not limited to this and can be appropriately modified.
  • the light receiving / emitting element 101 is disposed inside the case 102 and not shown on the optical axis of the light receiving / emitting element 101.
  • a condenser lens 103 and an oblique polishing surface 104 supported by a support means are arranged. Further, an opening 105 for inserting the optical connector 10 is provided on the side surface of the case 102 of the device 100.
  • the laser light emitted from the light emitting element 101 is reflected by the oblique polishing surface 104 through the condensing lens 103 and is guided to the opening 105. Then, the light reflected by the oblique polishing surface 104 is condensed by the collimator lens 12 of the optical connector 10 and enters the optical fiber 13. The light thus incident propagates in the optical fiber 13.
  • the optical path of the laser beam emitted from the light emitting element 101 is indicated by a dotted line.
  • the device 100 light propagating through the optical fiber 13 is collimated by passing through the collimator lens 12. Then, the laser beam emitted from the optical fiber 13 is reflected by the oblique polishing surface 104, and is guided to the light receiving element 101 through the condensing lens 103.
  • the optical path of the laser light emitted from the optical fiber 13 is indicated by a dotted line.
  • the optical connector 10 when the optical connector 10 is inserted to a predetermined position in the case 102, the laser light transmitted between the light receiving / emitting element 101 and the optical fiber 13 is focused on the condensing lens 103 and diagonally It is designed to be able to properly enter and exit through the polishing surface 104.
  • the configuration of the optical connector 10 according to the present embodiment connected to such a device 100 will be described.
  • FIG. 2 is a cross-sectional view of the optical connector 10 according to the first embodiment of the present invention.
  • the optical connector 10 is provided at a holder 11 as a holding member having a generally cylindrical shape, a collimator lens 12 held at one end of the holder 11, and the other end of the holder 11.
  • An optical fiber 13 inserted from the insertion hole 11a, a resin joint 14 for holding the holder 11 and the optical fiber 13, a jacket 15 for covering the optical fiber 13, and a metal member having a generally cylindrical shape for fixing the jacket 15 And 16 are configured.
  • a plastic optical fiber is preferably inserted as the optical fiber 13.
  • the plastic optical fiber also includes one in which the core is glass and the cladding is plastic.
  • the holder 11, the collimator lens 12, and the optical fiber 13 constitute an optical collimator 10a. Details of this optical collimator 10a will be described later.
  • FIG. 3A is a top view of the resin joint 14, and FIG. 3B is a cross-sectional view of the resin joint 14.
  • the resin joint 14 has a generally cylindrical shape, one end provided with an insertion hole 14a into which the holder 11 is inserted, and the other end provided with an opening 14b into which the optical fiber 13 is inserted.
  • An annular bowl-shaped portion 14c is provided near the center.
  • the portion from the ridge 14c to the insertion hole 14a is the first cylindrical portion 14d
  • the portion from the ridge 14c to the opening 14b close to the ridge 14c is the second cylindrical portion 14e, the ridge 14c.
  • a portion in the vicinity of the opening 14b from the bottom to the opening 14b is referred to as a jacket holding portion 14f.
  • An engaged portion 14g is provided in the center of the first cylindrical portion 14d in the shape of a groove. Further, the first cylindrical portion 14d and the second cylindrical portion 14e are configured to have substantially the same diameter.
  • the jacket holding portion 14f has a diameter smaller than that of the first cylindrical portion 14d, and a plurality of (three in the present embodiment) annular convex portions 14h are provided at an interval.
  • the annular convex portion 14h is formed such that the end cross section on the second cylindrical portion 14e side is perpendicular to the outer peripheral surface of the jacket holding portion 14f, and the end cross section on the opening 14b side is tapered.
  • the shape of the annular convex portion 14 h is not limited to this, and may be semicircular, reverse V-shaped, or the like.
  • the outer diameter of the bowl-shaped portion 14 c is larger than the inner diameter of the opening 105 in the device 100 to which the optical connector 10 is connected. Therefore, when the optical connector 10 is inserted into the device 100, up to the hooked portion 14c is always inserted into the device 100, and the optical connector 10 can be positioned at a predetermined position in the case 102. . Further, the engaged portion 14 g engages with the engaging portion 105 a provided on the inner periphery of the opening 105 in the device 100 when the optical connector 10 is connected to the device 100 (see FIG. 1). The optical connector 10 is inserted in order to prevent misalignment of the optical connector 10 and to improve the connection between the optical connector 10 and the device 100.
  • a positioning portion 14i is provided on the inner periphery of the resin joint 14 at the boundary between the collar portion 14c and the second cylindrical portion 14e.
  • the inner diameter of the resin joint 14 is different in diameter from the positioning portion 14i. That is, the inner diameter from the positioning portion 14i to the opening 14b is smaller than the inner diameter from the positioning portion 14i to the insertion hole 14a.
  • the inner diameter from the positioning portion 14i to the insertion hole 14a is approximately the same as the outer diameter of the holder 11, and the inner diameter from the positioning portion 14i to the opening 14b is approximately the same as the outer diameter of the optical fiber 13. It is configured.
  • fixing portion 14j is provided.
  • the optical fiber can be fixed at a plurality of positions on the same circumference in the vicinity of the positioning portion 14i, so that the optical fiber 13 can be reliably fixed.
  • the fixing portion 14j is formed by inserting the optical fiber 13 into the resin joint 14 and then performing pressing from the outside of the resin joint 14 using a tool.
  • the jacket 15 is made of, for example, an elastic material or a tensile strength fiber, and as shown in FIG. 2, the jacket holding portion 14 f of the resin joint 14 or the optical fiber 13 along the longitudinal direction of the optical fiber 13 exposed from the resin joint 14. I'm covering everything.
  • the jacket 15 and the optical fiber 13 are not in close contact with each other, and are attached with a gap. Therefore, even if the jacket 15 is pulled, no force is applied to the optical fiber 13, and disconnection of the optical fiber 13 can be prevented.
  • the jacket holding portion 14f to which the jacket 15 is attached has substantially the same diameter as the second cylindrical portion 14e.
  • slits are formed in a zigzag shape in the longitudinal direction.
  • the metal member 16 is fixed to cover the second cylindrical portion 14 e of the resin joint 14 and the jacket 15 attached to the jacket holding portion 14 f.
  • FIG. 4 is a side view of the optical collimator 10a according to the first embodiment.
  • FIG. 5 is a sectional view taken along the line AA in FIG.
  • the holder 11 is formed of, for example, a metal material such as stainless steel. In particular, in terms of workability, the holder 11 is preferably formed of austenitic stainless steel. As shown in FIG. 5, an opening 11 b is provided at an end of the holder 11 on the side of the collimator lens 12. Inside the opening 11b, a housing 11c for housing the collimator lens 12 is provided. In order to prevent the surface of the collimator lens 12 from being damaged, the housing portion 11 c is provided in a size that can receive the entire collimator lens 12 inside, and the collimator lens 12 is configured to be press-fit. In addition, a through hole 11 d having a diameter slightly larger than the outer diameter of the optical fiber 13 is provided in the holder 11.
  • the through hole 11d is in communication with the insertion hole 11a and in communication with the housing portion 11c. Furthermore, the holder 11 is provided with a plurality of depressions 11 e formed by pressing from the outer peripheral portion thereof with a tool or the like. These depressions 11e are provided between the accommodation portion 11c and the through hole 11d, and are used for positioning of the collimator lens 12 and the optical fiber 13 as described later in detail.
  • the collimator lens 12 is formed of, for example, a glass material, and is configured of a ball lens having a spherical shape. As shown in FIG. 5, the collimator lens 12 is disposed so as to face the tip of the optical fiber 13 inserted in the through hole 11 d in a state of being accommodated in the accommodation portion 11 c of the holder 11.
  • the optical fiber 13 is composed of a core 13a provided through the center thereof, a clad 13b covering the core 13a, and a reinforcing layer 13c covering and reinforcing the clad 13b. It is preferable to use a plastic optical fiber as the optical fiber 13. At the end face of the optical fiber 13 facing the collimator lens 12, the core 13a, the clad 13b and the reinforcing layer 13c are disposed on the same plane. That is, at the end face facing the collimator lens 12, the core 13a, the clad 13b and the reinforcing layer 13c are arranged in line.
  • the optical fiber 13 is inserted into the through hole 11 d through the insertion hole 11 a, and is fixed in a state in which the tip end portion is disposed in the vicinity of the collimator lens 12 so as to face the spherical surface.
  • the optical fiber 13 is made of, for example, a graded index (GI) type optical fiber, and the refractive index changes continuously in a cross section perpendicular to the fiber axis. It is configured.
  • the core 13a and the cladding 13b are made of, for example, a perfluorinated optical resin in which H of CH bond is substituted by F.
  • high-speed and large-capacity communication can be realized by configuring the optical fiber 13 with the all-fluorine-substituted optical resin and configuring with the GI-type optical fiber.
  • the optical collimator 10a according to the first embodiment is provided in the holder 11 for simply positioning the collimator lens 12 and the optical fiber 13 while suppressing an increase in cost.
  • the depression 11e is used. Specifically, positioning is performed by bringing the collimator lens 12 and a part of the optical fiber 13 into contact with the depressed portion 11 e provided in the holder 11, thereby eliminating the need for a configuration such as a spacer for these positioning, and cost The positioning of the collimator lens 12 and the optical fiber 13 can be easily performed while suppressing the rise of the lens.
  • FIG. 6 is an enlarged view in the dashed-two dotted line B shown in FIG.
  • the optical fiber 13 is formed on the part facing the optical fiber 13
  • the cladding 13 b or the reinforcing layer 13 c other than the core 13 a or a part of the cladding 13 b and the reinforcing layer 13 c abuts.
  • the collimator lens 12 and the optical fiber 13 are respectively positioned at predetermined positions of the holder 11 in such a state of contact.
  • the depressed portion 11e is a plane perpendicular to the insertion direction of the optical fiber 13 (for example, a plane C disposed parallel to the end face of the optical fiber 13 shown in FIG. 6 and passing the center of the depressed portion 11e). ),
  • the angle of the part facing the collimator lens 12 and the angle of the part facing the optical fiber 13 are provided at different angles.
  • Such a recess 11 e is provided, for example, by pressing using a tapered tool having a different shape of the tip. By performing press processing with such a tool, the depression 11e differs in angle between the part facing the collimator lens 12 and the part facing the optical fiber 13 with respect to the central axis at the time of the press processing. By setting the angle, it is possible to effectively position the collimator lens 12 and the optical fiber 13 having different shapes.
  • a plurality (three in the present embodiment) of such depressions 11 e are provided on the same circumference of the holder 11.
  • the formation of the depressions 11e on the same circumference can be considered, for example, by simultaneously pressing from the outer periphery of the holder 11 with tools having different tip shapes as described above. Since the collimator lens 12 and the optical fiber 13 can be brought into contact with each other at a plurality of positions by providing a plurality of depressions 11 e on the same circumference in this manner, the collimator lens 12 and the optical fiber 13 can be more accurately. It becomes possible to perform positioning.
  • the portion of the recess 11 e facing the collimator lens 12 constitutes an inclined surface 11 e 1 .
  • the inclined surface 11e 1 is a plan (e.g., orthogonal to the insertion direction of the optical fiber 13 shown by the arrows in FIG. 6, arranged parallel to the end face of the optical fiber 13 shown in FIG. 6, passes through the base end portion of the recess 11e It is provided so that angle (theta) 1 with respect to the plane D) to become may become 0 degree or more and 45 degrees or less.
  • the optical fiber 13 in the collimator lens 12 Since positioning can be performed while supporting part of the side, the positional accuracy of the collimator lens 12 can be enhanced.
  • the portion of the recess 11 e facing the optical fiber 13 constitutes an inclined surface 11 e 2 .
  • the inclined surface 11e 2 is a plane perpendicular to the insertion direction of the optical fiber 13 (e.g., a plane E which is parallel to the end face of the optical fiber 13 shown in FIG. 6) provided so that the angle theta 2 with respect to becomes 20 ° or less It is done.
  • the core 13a, the cladding 13b, and the reinforcing layer 13c are disposed on the same plane as described above.
  • the positional accuracy of these can be easily ensured.
  • the optical collimator 10a positioning is performed such that a part of the collimator lens 12 and a part of the optical fiber 13 are brought into contact with the recess 11e provided in the holder 11. Since the collimator lens 12 and the optical fiber 13 can be positioned with reference to the depression 11e, the working efficiency can be improved as compared with the case where another component is inserted into the holder 11 as in the prior art. It is possible to easily position the collimator lens 12 and the optical fiber 13 while suppressing an increase in cost.
  • FIGS. 7 to 10 are explanatory views sequentially showing the assembling process of the optical connector 10.
  • FIG. 7 to 10 are explanatory views sequentially showing the assembling process of the optical connector 10.
  • the holder 11 is press-fit through the insertion hole 14 a of the resin joint 14.
  • the holder 11 press-fitted from the insertion hole 14a comes to rest when the insertion hole 11a of the holder 11 abuts on the positioning portion 14i.
  • the holder 11 is positioned at a predetermined position.
  • the positioning part 14i of the holder 11 is provided in the resin coupling 14, when the holder 11 is inserted in the resin coupling 14, the holder 11 can be positioned easily.
  • the optical fiber 13 is inserted from the opening 14 b of the resin joint 14.
  • the optical fiber 13 is guided by the inner diameter of the resin joint 14 to reach the insertion hole 11a of the holder 11, and is guided by the inner diameter of the holder 11 to reach the recess 11e.
  • the insertion operation is completed.
  • the optical fiber 13 is positioned at a predetermined position. Further, since the inner diameter from the positioning portion 14i to the opening 14b is configured to be substantially the same as the outer diameter of the optical fiber 13, the optical fiber 13 can be securely fixed.
  • the second cylindrical portion 14e of the resin joint 14 is subjected to pressing using a tool to fix the optical fiber 13 (two in the present embodiment).
  • the fixing portion 14j is formed on the same circumference.
  • the optical fiber 13 and the resin joint 14 are crimped and fixed by the fixing portion 14 j, and the optical fiber 13 can be securely fixed.
  • the optical fiber 13 can be crimped and fixed, and the number of parts can be reduced.
  • the jacket 15 is attached so as to cover the entire optical fiber 13 along the longitudinal direction of the optical fiber 13 exposed from the jacket holding portion 14f of the resin joint 14 or the resin joint 14. Since the jacket 15 is fixed to the jacket holding part 14f by the annular convex part 14h provided in the jacket holding part 14f, the jacket 15 covering the optical fiber 13 can be effectively fixed without increasing the number of parts. It becomes possible.
  • the metal member 16 is attached to the second cylindrical portion 14e and the jacket holding portion 14f of the resin joint 14 to make the fixation of the jacket 15 more reliable.
  • the metal member 16 can be mounted by widening the slit of the metal member 16 to sandwich the resin joint 14 and then closing the slit of the metal member 16.
  • the optical connector 10 positioning is performed such that a part of the collimator lens 12 and a part of the optical fiber 13 are brought into contact with the depression 11e provided in the holder 11 Since the collimator lens 12 and the optical fiber 13 can be positioned with reference to the depression 11e, the working efficiency is improved as compared with the case where another component is inserted into the holder 11 as in the prior art. It is possible to easily position the collimator lens 12 and the optical fiber 13 while suppressing an increase in cost. Further, since the holder 11 is press-fitted to the resin joint 14 and the optical fiber 13 is crimped and fixed to assemble the optical connector 10, the optical connector 10 can be easily assembled with a small number of parts. As a result, the collimator lens and the optical fiber can be aligned with high accuracy without requiring a complicated assembly process.
  • a partition (spacer portion) is formed for positioning the optical fiber and the collimator lens as in the prior art
  • processing such as cutting on a holding member (holder) made of a metal material or the like.
  • the holding member of the optical connector used in the above-mentioned application since the size is reduced, the processing accuracy of cutting is lowered, and the cost associated with the processing (for example, the cost due to the generation of defective products). The increase is noticeable.
  • the holder 11 of the optical connector 10 according to the first embodiment, plastic working is performed instead of forming the partition (spacer portion) by performing cutting on the holder 11 as a holding member.
  • the partition spacer portion
  • the cost involved in the processing can be significantly reduced.
  • the optical connector 10 while the positioning between the collimator lens 12 and the optical fiber 13 is performed by the depressed portion 11e formed in the holder 11, the fixing portion 14j formed in the resin joint 14 The optical fiber 13 is fixed by this. In this case, the optical fiber 13 is firmly fixed in the positioned state. Therefore, in an application for performing large-capacity communication between devices or within devices using optical fiber 13, the positional relationship between optical fiber 13 and collimator lens 12 is maintained even when insertion and removal are repeated. be able to.
  • the collimator lens 12 and the optical fiber 13 are positioned by bringing a part of the collimator lens 12 and a part of the optical fiber 13 into contact with the recess 11 e provided in the holder 11 doing.
  • the method of positioning the collimator lens 12 and the optical fiber 13 is not limited to this, and can be appropriately changed. For example, instead of bringing both the collimator lens 12 and the optical fiber 13 into contact with the depression 11 e, one of the collimator lens 12 or the optical fiber 13 is brought into contact, and the other is the holder 11 other than the depression 11 e. You may make it position by a part.
  • the portion for positioning the other is designed in a fixed positional relationship with the recess 11e. That is, in the optical connector 10 according to the present invention, the idea of bringing one of the collimator lens 12 or the optical fiber 13 into contact with the depressed portion 11 e is also included.
  • FIG. 11A is a top view of the optical connector 20 according to the second embodiment
  • FIG. 11B is a cross-sectional view of the optical connector 20.
  • FIG. 11 the same components as those of the optical connector 10 according to the first embodiment shown in FIGS. 2 to 10 are designated by the same reference numerals, and the description thereof will be omitted.
  • the optical connector 20 is configured by arranging two optical connectors 10 according to the first embodiment and attaching them to the housing 21.
  • the housing 21 has a generally box shape, is provided with an insertion hole 21a for inserting the optical connector 10 on one surface, and an opening 21b for exposing the optical connector 10 on the surface opposite to the surface provided with the insertion hole 21a. It is provided. That is, the housing 21 is provided with the through holes 21c in which a plurality of optical connectors 10 can be mounted in parallel.
  • the inner diameter of the through hole 21 c is configured to be substantially the same as the outer diameter of the collar 14 c provided in the resin joint 14 in the optical connector 10.
  • the inner diameter of the opening 21 b is smaller than the outer diameter of the collar 14 c provided in the resin joint 14 of the optical connector 10. Therefore, the optical connector 10 inserted from the insertion hole 21a is positioned when the hooked portion 14c abuts on the opening 21b. Further, in this case, the outer periphery of the collar portion 14c abuts on the inner periphery of the through hole 21c, and the optical connector 10 is fixed. As described above, by using the configuration in which the positioning and fixing are performed by the hook portion 14c, the housing 21 and the resin joint 14 are easily fixed without the need for a dedicated part, and a plurality of optical connectors 10 are attached. It is possible to configure the optical connector 20 capable of large-capacity communication.
  • the optical connector according to the third embodiment is an optical connector in which a plurality of optical collimators 10a according to the first embodiment are arranged and mounted.
  • FIGS. 12 and 13 are a top view of the optical connector 30 according to the third embodiment
  • FIG. 12B is a cross-sectional view of the optical connector 30
  • FIG. 13 is a cross-sectional view taken along line CC in FIG. 12A.
  • the same reference numerals are given to the same components as those of the optical connector 10 according to the first embodiment shown in FIGS. 2 to 10, and the description thereof will be omitted.
  • the optical connector 30 is configured by arranging and mounting a plurality of (two in the present embodiment) optical collimators 10 a on the integral joint 31.
  • the integral joint 31 is formed of a resin material, and both ends are branched corresponding to the number of mountable optical collimators 10a, an insertion hole 31a into which the holder 11 is inserted is provided at one end, and the other end is An opening 31 b into which the optical fiber 13 is inserted is provided.
  • the branched portion 31 c on the insertion hole 31 a side has substantially the same structure as the first cylindrical portion 14 d (see FIG. 3) of the resin joint 14.
  • the branched portion 31 d on the opening 31 b side has a cylindrical shape with a smaller diameter than the branched portion 31 c on the insertion hole 31 a side.
  • a portion between the branch portion 31c on the insertion hole 31a side and the branch portion 31d on the opening 31b side has a cylindrical shape having a substantially elliptical cross section.
  • Fixing portions 31 h for fixing the optical fibers 13 are provided corresponding to the respective optical fibers 13 in the cylindrical portion 31 g.
  • the cross-sectional shape of the cylindrical part 31g changes with the number of the optical collimators 10a with which it mounts
  • a jacket holding portion 31e is provided in a portion close to the opening 31b from the substantially central portion of the integral joint 31 to the opening 31b.
  • a plurality of convex portions 31f are provided at intervals (see FIG. 13).
  • the jacket holding portion 31e is configured such that the outer diameter thereof is smaller than that of the adjacent cylindrical portion 31g.
  • the holder 11 in which the collimator lens 12 is set is press-fit from the insertion hole 31 a of the integral joint 31.
  • the optical fiber 13 is inserted from the opening 31 b of the integral joint 31.
  • the optical fiber 13 abuts on the recess 11 e of the holder 11 and is positioned at a predetermined position.
  • the cylindrical portion 31g of the integral joint 31 is pressed using a tool to form a plurality of fixing portions 31h for fixing the optical fiber 13.
  • the optical fiber 13 and the integral joint 31 are crimped and fixed by the fixing portion 31 h, and the optical fiber 13 can be reliably fixed.
  • the optical fiber 13 can be crimped and fixed without using a special part, the number of parts can be reduced.
  • the jacket 15 is mounted so as to cover the entire optical fiber 13 along the longitudinal direction of the optical fiber 13 exposed from the jacket holding portion 31e of the integral joint 31 or the integral joint 31.
  • the jacket 15 is fixed to the jacket holding portion 31e by the plurality of convex portions 31f provided in the jacket holding portion 31e. Therefore, the jacket 15 can be effectively fixed without increasing the number of parts.
  • the outer diameter of the jacket holding portion 31e to which the jacket 15 is attached is substantially the same diameter as the outer diameter of the cylindrical portion 31g.
  • the optical connector 30 shown in FIGS. 12 and 13 can be assembled by the above process.
  • the large-capacity communicable optical connector 30 to which the plurality of optical collimators 10a are attached can be configured with a small number of parts.
  • the simplification and cost reduction of the manufacturing process can be realized.
  • the optical connector according to the fourth embodiment has a housing attached to the optical connector 10 according to the first embodiment.
  • the configuration of the optical connector according to the fourth embodiment will be described below based on FIG.
  • FIG. 14A is a top view of the optical connector 40 according to the fourth embodiment
  • FIG. 14B is a cross-sectional view of the optical connector 40.
  • the same components as those of the optical connector 10 according to the first embodiment are designated by the same reference numerals, and the description thereof is omitted.
  • the optical connector 40 is configured by mounting the optical connector 10 according to the first embodiment to a housing 41. That is, the optical connector 40 according to the present embodiment includes the housing 41 having the insertion area 41 c for inserting the optical connector 10 so as to expose the resin joint 14 in the optical connector 10 according to the first embodiment. And a spring 43 for urging the optical connector 10 in the insertion direction of the optical connector 10 with respect to the housing 41.
  • the housing 41 has a main body that is generally cylindrical and is provided with an insertion hole 41a at one end where the optical connector 10 is inserted, and at the other end an opening through which a part of the resin joint 14 of the optical connector 10 is inserted. 41b is provided. That is, the housing 41 is provided with an interpolation area 41 c which partially interpolates the optical connector 10 from the insertion hole 41 a to the opening 41 b.
  • the optical connector 10 is inserted through the insertion hole 41 a until the collar 14 c of the resin joint 14 abuts on the stopper 41 d.
  • the direction in which the optical connector 10 is inserted in this manner is referred to as the insertion direction of the optical connector (in the direction of the arrow A in the drawing). That is, the insertion hole 41a in the housing 41 is provided on the rear side in the insertion direction in the insertion area 41c, and the opening 41b is provided on the tip side in the insertion direction in the insertion area 41c. In the vicinity of the opening 41 b of the housing 41, a groove-shaped engaged portion 41 e is provided. When the optical connector 40 is incorporated into the device, the engaged portion 41e engages with the engagement portion provided on the device side. Thus, the optical connector 40 inserted into the device can be positioned, and the positional deviation between the two can be prevented, and the optical connector 40 can be reliably fixed to the device.
  • the inner diameter of the insertion area 41c is the same as the inner diameter of the insertion hole 41a, and is slightly larger than the outer diameter of the collar portion 14c provided in the resin joint 14. Therefore, a slight gap is formed between the collar 14 c and the inner wall of the housing 41.
  • the inner diameter of the opening 41 b is configured to be slightly larger than the outer diameter of the first cylindrical portion 14 d of the resin joint 14. Therefore, a slight gap is formed between the first cylindrical portion 14 d of the resin joint 14 and the inner peripheral portion of the stopper 41 d. For this reason, the resin joint 14 is slightly movable with respect to the opening 41 b of the housing 41.
  • the lid member 42 is inserted into the insertion hole 41 a of the housing 41.
  • the lid member 42 is composed of a flange portion 42a and a convex portion 42b.
  • the outer diameter of the flange portion 42 a is substantially the same as the outer diameter of the housing 41.
  • the outer diameter of the convex portion 42b is configured to be substantially the same as the inner diameter of the insertion region 41c.
  • a through hole 42 c is provided at a central position of the lid member 42.
  • the jacket 15 which covers the optical fiber 13 in the optical connector 10 is inserted into the through hole 42c.
  • the inner diameter of the through hole 42 c is larger than the outer diameter of the jacket 15. Therefore, a gap that facilitates insertion of the jacket 15 is formed between the jacket 15 inserted into the through hole 42 c and the through hole 42 c.
  • a spring 43 is inserted into the insertion area 41 c of the housing 41 in addition to the optical connector 10.
  • the spring diameter of the spring 43 is set larger than the outer peripheral portion of the optical connector 10. Therefore, the spring 43 is located between the optical connector 10 and the inner wall of the housing 41 in the insertion area 41 c.
  • a coil spring can be applied.
  • the spring 43 is accommodated between the flange portion 14c of the resin joint 14 and the convex portion 42b of the lid member 42, and is in a charged state. That is, the resin joint 14 is disposed in a state of being stored between the flanged portion 14c of the resin joint 14 and the convex portion 42b of the lid member 42, and the resin joint 14 is biased by the spring 43 toward the stopper 41d.
  • the optical connector 40 After inserting the optical connector 10 into the housing 41, the optical connector 40 accommodates the spring 43 in the insertion area 41c, and then the convex portion 42b of the lid member 42 in a state in which the optical fiber 13 is inserted through the through hole 42c. Are assembled by inserting and pushing into the opening 41a. At this time, the spring 43 elastically deforms with the insertion of the lid member 42, and the spring 43 is stored.
  • a slight gap is formed between the first cylindrical portion 14d of the resin joint 14 and the inner peripheral portion of the stopper 41d.
  • a slight gap is formed between the collar portion 14 c and the inner wall surface of the housing 41.
  • a gap is formed between the through hole 42c and the jacket 15 inserted into the through hole 42c. That is, in the optical connector 40, a gap is formed between the optical connector 10 and the housing 41 and the lid member 42, so the optical connector 10 is not fixed and the optical connector 10 mounted on the housing 41 is It is configured to be movable in the illustrated Y direction (the short direction of the optical connector 10) within a certain range.
  • FIG. 15 is a cross-sectional view showing another configuration example of the optical connector 40.
  • the optical connector 40 may have a configuration in which an elastic member 44 such as an O-ring is provided between the stopper 41 d and the resin joint 14.
  • an elastic member 44 such as an O-ring
  • the first cylindrical portion 14d of the resin joint 14 and the inner peripheral portion of the elastic member 44 are in contact with each other, and a gap can not be formed.
  • the elastic member 44 since the elastic member 44 has elasticity, the resin joint 14 is not fixed to the housing 41 and is movable, and the optical connector 10 mounted on the housing 41 is in a certain range in the Y direction It becomes movable configuration.
  • the spring 43 is disposed in a state of being stored by the collar portion 14 c and the lid member 42. Since the optical connector 10 and the housing 41 are not fixed, when the portion of the optical connector 10 exposed from the opening 41 b of the housing 41 is pushed into the housing 41, the spring 43 is moved along with the movement of the hook portion 14c. Elastically deform. That is, the optical connector 10 mounted to the housing 41 is configured to be movable in the illustrated X direction (longitudinal direction of the optical connector 10) within a certain range.
  • the device incorporating the optical connector 40 has an opening into which the optical connector 40 is inserted, and is internally provided with an optical element (for example, a photodiode) that transmits and receives an optical signal to and from the optical collimator.
  • an optical element for example, a photodiode
  • the configuration of the device is not limited to this, and can be changed as appropriate.
  • the opening of the device is designed to the size into which the housing 41 of the optical connector 40 is inserted.
  • the present invention is not limited to this configuration, and the opening of the device is not particularly limited as long as the resin joint 14 mounted in the housing 41 is inserted.
  • the optical connector 10 mounted on the housing 41 is configured to be movable in the X and Y directions within a certain range, the optical connector in a state where there is a gap between the optical element in the device and the axial center of the optical collimator 10a Even when 10 is inserted, the optical connector 10 is moved and positioned (by slight movement in the X and Y directions) at the time of insertion, so that the axial center of the optical collimator 10a can be absorbed it can.
  • the optical connector 40 since the optical connector 10 mounted to the housing 41 is configured to be movable in the X and Y directions within a certain range, the device When combining the optical connector 10, it is possible to absorb the misalignment between the two axial centers, and it is possible to align the collimator lens and the optical fiber with high accuracy without requiring a complicated alignment operation. Become.
  • the present invention is not limited to the above embodiment, and can be implemented with various modifications.
  • the size, shape, and the like illustrated in the attached drawings are not limited thereto, and can be appropriately changed within the range in which the effects of the present invention are exhibited.
  • the plastic optical fiber is described as an example of the optical fiber 13.
  • the optical fiber 13 applied to the optical connector 10 (20, 30, 40) according to the above embodiment is a plastic It is not limited to the optical fiber.
  • the configuration for locking the spring 43 in the housing 41 is not limited to this, and can be changed as appropriate.
  • a protrusion may be provided in the insertion area 41c of the housing 41, and one end of the spring 43 may be locked, or another member may be press-fitted in the insertion area 41c to lock one end of the spring 43. .
  • the configuration in which the optical connector 40 includes the spring 43 and the optical connector 10 is biased in the insertion direction by the spring 43 is described.
  • the configuration for biasing the optical connector 10 in the insertion direction is not limited to this, and can be changed as appropriate.
  • an elastic member 44 such as an O-ring is provided between the stopper 41d and the resin joint 14, and the inner wall surface of the elastic member 44 (FIG. 16A) It is good also as a mode which fixes by adhesion etc. the flanged part 14c of the right side shown in and the resin joint 14. Further, as shown in FIG.
  • the elastic member 44 is provided outside the housing 41, and the resin joint 14 is disposed such that the collar portion 14c is arranged outside the housing 41.
  • the flange portion 14c of the resin joint 14 and the outer wall surface of the housing 41 may be fixed by adhesion or the like. Even in such a case, the optical connector 10 can be biased in the insertion direction according to the restoring force of the elastic member 44 to the initial state.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
PCT/JP2012/058986 2011-05-26 2012-04-02 光コネクタ Ceased WO2012160878A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280026036.6A CN103582835B (zh) 2011-05-26 2012-04-02 光连接器
US14/116,989 US9195016B2 (en) 2011-05-26 2012-04-02 Optical connector
EP12789993.8A EP2717078A4 (en) 2011-05-26 2012-04-02 OPTICAL CONNECTOR

Applications Claiming Priority (4)

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JP2011117961 2011-05-26
JP2011-117961 2011-05-26
JP2011-205289 2011-09-20
JP2011205289A JP5357231B2 (ja) 2010-12-15 2011-09-20 光コネクタ

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EP (1) EP2717078A4 (enExample)
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CN (1) CN103582835B (enExample)
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TW201447410A (zh) * 2013-06-14 2014-12-16 Hon Hai Prec Ind Co Ltd 光纖耦合連接器
JP6328417B2 (ja) * 2013-12-18 2018-05-23 三菱鉛筆株式会社 光結合部材
WO2015199054A1 (ja) 2014-06-27 2015-12-30 株式会社キーエンス 多波長光電測定装置、共焦点測定装置、干渉測定装置及びカラー測定装置
JP6649158B2 (ja) 2016-03-30 2020-02-19 株式会社エンプラス 光レセプタクル、光モジュールおよび光モジュールの製造方法
JP2019191380A (ja) * 2018-04-25 2019-10-31 日本電信電話株式会社 光モジュール、光配線基板および光モジュールの製造方法
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CN103582835A (zh) 2014-02-12
JP5357231B2 (ja) 2013-12-04
US20140126864A1 (en) 2014-05-08
US9195016B2 (en) 2015-11-24
TW201300860A (zh) 2013-01-01
CN103582835B (zh) 2016-05-18
EP2717078A4 (en) 2014-10-29
JP2013007986A (ja) 2013-01-10
EP2717078A1 (en) 2014-04-09

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