CN109541757B - Glue injector of optical fiber connector - Google Patents
Glue injector of optical fiber connector Download PDFInfo
- Publication number
- CN109541757B CN109541757B CN201811642273.0A CN201811642273A CN109541757B CN 109541757 B CN109541757 B CN 109541757B CN 201811642273 A CN201811642273 A CN 201811642273A CN 109541757 B CN109541757 B CN 109541757B
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- glue
- section
- optical fiber
- injector
- cap
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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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
-
- 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
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to connection between a ceramic ferrule of an optical fiber connector and an optical fiber, in particular to an adhesive injector of the optical fiber connector. The utility model provides an optical fiber connector's injecting glue ware, establishes the connecting cap to the front end of ceramic lock pin including being used for removable cover, the connecting cap has the section of cup jointing that is used for with the front end sealing fit of ceramic lock pin and the injecting glue section that links to each other with the section of cup jointing, be equipped with glue passageway and glue passageway in the injecting glue section and communicate with each other with the section of cup jointing, be equipped with on the injecting glue section and be used for pushing away the glue to the pushing away of the preceding terminal surface of ceramic lock pin and glue the piece, be equipped with the exhaust hole in the position that is close to the section of cup jointing on the lateral wall of injecting glue section. The glue injector in the scheme can be used for conveniently gluing the front end face of the ceramic ferrule of the optical fiber connector, so that the on-site operation is convenient.
Description
Technical Field
The invention relates to connection between a ceramic ferrule of an optical fiber connector and an optical fiber, in particular to an adhesive injector of the optical fiber connector.
Background
The optical fiber connector is a device for detachably connecting optical fibers, and precisely connects two end surfaces of the optical fibers, so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the maximum extent, and the influence on a system caused by the intervention of the light energy into an optical link surface is minimized, which is the basic requirement of the optical fiber connector.
The existing optical fiber connector generally comprises a connector shell, wherein an inserting core component is arranged at the front part of the connector shell, the inserting core component comprises a ceramic inserting core and an optical cable ceramic inserting core tail handle, an optical fiber stripped after the optical cable is stripped is inserted into an optical fiber jack of the ceramic inserting core, and the optical cable is fixed in a reserved space in the optical cable ceramic inserting core tail handle through glue.
After the optical fiber in the prior art is fixed on the tail handle of the optical cable ceramic ferrule, the part of the optical fiber extending out of the front end face of the ceramic ferrule is required to be removed through grinding, because the optical fiber strength is poor, if the optical fiber is directly ground, the optical fiber is easy to damage, therefore, the front end face of the ceramic ferrule is required to be coated with glue before grinding, the optical fiber is supported through the solidified glue solution, and the extending part of the optical fiber and the solidified glue are removed during grinding.
At present, the gluing of the front end face of the ceramic ferrule is manually performed in a factory, because the diameter of the ceramic ferrule is smaller and needs to be kept clean, in order to avoid the glue solution from being smeared on the side face of the ceramic ferrule, the glue solution is smeared on the front end face of the ceramic ferrule in a syringe injection mode or by using a glue outlet nozzle of a glue bottle, and of course, a very small part of the glue solution also enters the front end of an optical fiber jack on the ceramic ferrule. Before the glue spreading operation, the glue solution needs to be pre-filled into a syringe or a glue bottle, however, the diameter of the ceramic ferrule is smaller, the use amount is smaller, and in order to accurately glue the glue and avoid the waste of the glue solution, the existing glue injection mode is not suitable for on-site operation.
Disclosure of Invention
The invention aims to provide an adhesive injector of an optical fiber connector, which can facilitate the on-site adhesive injection of the optical fiber connector.
In order to achieve the above purpose, the technical scheme adopted by the glue injector of the optical fiber connector is as follows.
The utility model provides an optical fiber connector's injecting glue ware, establishes the connecting cap to the front end of ceramic lock pin including being used for removable cover, the connecting cap has the section of cup jointing that is used for with the front end sealing fit of ceramic lock pin and the injecting glue section that links to each other with the section of cup jointing, be equipped with glue passageway and glue passageway in the injecting glue section and communicate with each other with the section of cup jointing, be equipped with on the injecting glue section and be used for pushing away the glue to the pushing away of the preceding terminal surface of ceramic lock pin and glue the piece, be equipped with the exhaust hole in the position that is close to the section of cup jointing on the lateral wall of injecting glue section.
The beneficial effects are that: the front end to the ceramic lock pin can be established to the connecting cap of injecting glue ware can seal cover to protect the side of ceramic lock pin, avoid glue to enter into the side, simultaneously, push away gluey piece can push away the preceding terminal surface of ceramic lock pin with glue through the glue passageway in the injecting glue section of connecting cap, the exhaust hole can guarantee that glue reaches the preceding terminal surface of ceramic lock pin smoothly, thereby realize the rubber coating operation to the preceding terminal surface of ceramic lock pin, pull out connecting cap and glue cap from ceramic lock pin after the rubber coating is accomplished and can carry out follow-up operation, and glue can store in pushing away gluey piece or glue passageway, need not on-spot to the syringe or glue bottle in-built glue, convenient to use, be convenient for carry out on-spot operation.
As a preferred technical scheme, the glue pushing piece is a glue cap which is arranged on the glue injection section in a sliding sealing manner, and the glue cap is provided with an inner cavity for containing glue.
The beneficial effects are that: the glue cap can contain enough glue, which is also beneficial to shortening the whole length of the glue injector; and the glue cap is positioned outside the connecting cap, so that the glue injection operation is more convenient.
As a preferable technical scheme, a sealing ring is arranged between the glue injection section and the glue cap.
The beneficial effects are that: the sealing ring is arranged to ensure sealing performance, so that outflow of glue is avoided better.
As a preferable technical scheme, the inner diameter of the glue channel is smaller than that of the sleeving section, and an annular step surface which faces to the rear and is used for butt joint of the front end face of the ceramic ferrule is formed at the joint of the glue channel and the sleeving section.
The beneficial effects are that: the annular step surface is arranged to better protect the outer peripheral surface of the ceramic ferrule, so that the glue is prevented from polluting the outer peripheral surface of the ceramic ferrule.
As a preferred technical scheme, the annular step surface is an inclined surface for matching with the ceramic ferrule with the APC end surface.
The beneficial effects are that: the structure can be better adapted to the ceramic ferrule with the APC end face, and the peripheral surface of the ceramic ferrule is prevented from being coated with glue.
As a preferable technical scheme, a positioning key or a positioning key groove which is used for being matched with the connector shell in a positioning way along the circumferential direction is arranged on the outer circumferential surface of the sleeving section.
The beneficial effects are that: the positioning key or the positioning key groove is arranged, so that the annular step surface and the APC end surface can be ensured to be accurately matched.
As a preferable technical scheme, one end of the glue channel close to the sleeving section is provided with a small-diameter section with a reduced inner diameter.
The beneficial effects are that: because the radial dimension of the APC end face is smaller, the butt joint of the APC end face and the annular step face can be ensured by arranging the small-diameter section, and the inner diameter of the part before the small-diameter section is larger, so that the flowing resistance of glue solution can be reduced, and the glue solution can be ensured to pass smoothly.
As a preferable technical scheme, the distance between the hole wall of the exhaust hole, which is close to one side of the sleeving section, and the annular step surface is smaller than 1mm.
The beneficial effects are that: set up the processing in the exhaust hole of being convenient for of interval to can form certain glue accommodation space, guarantee effective rubber coating.
As a preferable technical scheme, the aperture range of the exhaust hole is 0.3 mm-0.7 mm.
The beneficial effects are that: the exhaust hole can discharge redundant glue and ensure that light can not directly irradiate the glue in the glue injector, so that the performance of the glue can not be affected.
Drawings
FIG. 1 is a schematic view of a first embodiment of an adhesive injector of an optical fiber connector according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a cross-sectional view C-C of FIG. 2;
FIG. 5 is a side view of the ferrule of the present invention assembled with an injector, as viewed from the ferrule side;
FIG. 6 is a D-D sectional view of FIG. 5;
FIG. 7 is a sectional view E-E of FIG. 5;
FIG. 8 is a schematic view of the fiber optic connector of FIG. 1 after the glue injector has been removed;
FIG. 9 is a schematic diagram illustrating a second embodiment of an adhesive injector for an optical fiber connector according to the present invention;
FIG. 10 is a schematic illustration of the assembly of the ferrule and the glue injector of FIG. 9.
In the figure: 10-optical fiber connector, 11-connector shell, 12-ceramic ferrule, 13-optical fiber jack, 14-APC end face, 16-positioning key slot, 17-positioning key, 20-glue injector, 21-connecting cap, 22-sleeve joint section, 23-glue channel, 24-glue injection section, 25-annular step surface, 26-flange, 27-vent hole, 28-stop piece, 29-sealing ring, 30-glue cap, 31-inner cavity, 41-ceramic ferrule, 42-annular step surface.
Detailed Description
The following description of the embodiments of the invention is given by way of illustration and not limitation.
In the first embodiment of the glue injector of the optical fiber connector provided by the invention, as shown in fig. 1, 2, 3 and 4, the glue injector 20 of the optical fiber connector is matched with the optical fiber connector 10 when in use, and is used for injecting glue to the front end face of the ferrule 12 in the optical fiber connector 10. As shown in fig. 2, 3, 6 and 8, the optical fiber connector 10 includes a connector housing 11, a ferrule 12 is provided at a front portion of the connector housing 11, the ferrule 12 has an optical fiber insertion hole 13 penetrating from front to rear, and a front end surface is an APC end surface 14.
As shown in fig. 5, 6 and 7, the glue injector 20 comprises a connecting cap 21 and a glue cap 30, wherein a through hole is arranged in the center of the connecting cap 21, one end of the through hole is used for being sleeved on the front end of the ferrule 12, and a sleeving section 22 used for being sleeved on the front end of the ferrule 12 is formed by the corresponding part of the connecting cap 21; the rear end of the through hole forms a glue channel 23, the corresponding part of the connecting cap 21 forms a glue injection section 24, and the glue injection section 24 is arranged at one end of the sleeving section 22 far away from the ceramic ferrule 12. The inner diameter of the glue channel 23 is smaller than that of the sleeve joint section 22, and an annular step surface 25 facing backward is formed at the joint of the two. In order to achieve the application of glue to the APC end surface 14 of the ferrule 12, the annular step surface 25 is an inclined surface for the APC end surface 14 to adhere to. Meanwhile, the outer peripheral surface of the sleeve joint section 22 is provided with positioning keys 17 which are used for being in positioning fit with the positioning key grooves 16 on the connector shell 11 along the circumferential direction, the positioning key grooves 16 comprise two different widths, and the two positioning keys 17 are correspondingly arranged, so that the APC end face 14 and the annular step face 25 cannot be attached or damaged due to misplug. When in use, the APC end face 14 at the front end of the ceramic ferrule 12 is butted with the annular step face 25 and forms a seal through butt joint, so that glue is prevented from flowing to the side wall of the ceramic ferrule 12. The outer peripheral surface of the sleeve joint section 22, which is close to one end of the glue injection section 24, is also provided with a circle of flange 26, so that force can be conveniently applied when the glue cap 30 is pushed and when the connecting cap 21 is pulled out.
As shown in fig. 6, the side wall of the glue injection section 24 is provided with a vent hole 27 at a position close to the sleeve joint section 22, and as a preferred embodiment, the distance between the hole wall of the side of the vent hole 27 close to the sleeve joint section 22 and the annular step surface 25 is smaller than 1mm, and as a preferred embodiment, the aperture range of the vent hole 27 is 0.5mm. In this embodiment, the glue is UV glue, and the aperture of the vent 27 does not cause more light to enter the glue channel 23, thereby avoiding accidental curing of the glue.
The glue injection section 24 is provided with a glue cap 30 by a sliding sealing sleeve, the glue cap 30 forms a glue pushing piece for pushing glue to the front end face of the ceramic ferrule 12, and the glue pushing piece is provided with an inner cavity 31 for containing the glue, is used for storing and sealing the glue, and can generate glue injection pressure when moving. The outer peripheral surface of the glue injection section 24 is provided with a ring groove, and a sealing ring 29 is arranged in the ring groove and is used for being in sealing fit with a glue cap 30 to prevent glue from flowing out. To avoid the glue from being cured accidentally, the glue cap 30 is made of black material and can absorb ultraviolet rays. Of course, in other embodiments, the glue cap 30 may be made of a translucent material capable of filtering ultraviolet light, or a transparent material and a package capable of filtering ultraviolet light.
In order to prevent the glue injector 20 from being collided by mistake to extrude the glue, a stop piece 28 which is in stop fit with the end face of the glue cap 30 along the axial direction of the glue cap 30 is arranged on the outer circumferential surface of the connecting cap 21. The stop piece 28 and the connection cap 21 are integrally formed, and in the actual glue injection process, the stop piece 28 is smaller and can not keep stopping the glue cap 30 all the time, the glue cap 30 can cut off the stop piece 28 in the pushing process, so that the glue can be smoothly injected into the optical fiber jack 13 in the ceramic ferrule 12 in the subsequent pushing process of the glue cap 30.
When in use, the glue cap 30 is pushed and the stop piece 28 is sheared, so that the stop of the glue cap 30 is released, and the glue cap 30 is pushed continuously to move the glue cap 30, so that air in the glue channel 23 is discharged from the exhaust hole 27, and then the glue originally positioned in the inner cavity 31 moves to the front end face of the optical fiber jack 13 through the glue channel 23, and a small part of glue is likely to enter the optical fiber jack 13. If there is excess glue, it can also be discharged from the vent 27. Then, the connection cap 21 and the glue cap 30 thereon are pulled out from the ceramic ferrule 12, the optical cable is loaded from the rear of the connector housing 11, the optical fiber passes through the optical fiber jack 13 in the ceramic ferrule 12, the rear end of the optical fiber is fixed by glue filling or by pressing the outer skin of the optical cable, the front end of the optical fiber passes through the glue smeared on the front end of the ceramic ferrule 12, ultraviolet rays are irradiated to the glue on the front end of the ceramic ferrule 12, the curing of the glue can be realized, and then the subsequent grinding operation can be performed. In the process of pulling the connecting cap 21 out of the ceramic ferrule 12, the exhaust hole 27 is arranged, so that the glue coated on the front end surface of the ceramic ferrule 12 can be prevented from being sucked back, and the glue coating amount can be ensured. The hole wall of the exhaust hole 27, which is close to one side of the sleeve joint section 22, is spaced from the annular step surface 25, and glue can be contained in the space, so that the glue spreading amount of the glue on the front end surface of the ferrule 12 is further ensured.
As shown in fig. 9 and 10, a second embodiment of the glue injector of the optical fiber connector of the present invention is different from the first embodiment in that: in this embodiment, the ferrule 41 of the corresponding optical fiber connector adopts another ferrule form in the prior art, the front end face of the ferrule is a plane perpendicular to the axis of the ferrule 41, and correspondingly, the annular step surface 42 is perpendicular to the axis of the connecting cap, and when in use, the front end face of the ferrule 41 is butted with the annular step surface 42 and forms a seal through butt joint, so that glue is prevented from flowing to the side wall of the ferrule 41. Meanwhile, since the problem of correspondence of the APC surface does not need to be considered, no positioning key is provided on the connection cap in this embodiment. The remaining reference numerals in the drawings are the same as those in the first embodiment.
In the above embodiments, the glue pushing member is a glue cap with a sliding seal sleeve arranged on the glue injection section, and the glue is stored in the glue cap. In other embodiments, the glue pushing member may be replaced by another form, such as a piston inserted in the glue injection section, in which case the glue may be preloaded into the glue channel. Because the ceramic ferrule diameter of optic fibre is less, and the diameter of corresponding glue passageway is also less, and glue can not free flow under the effect of surface tension, and if the UV glue of selecting for use, its viscosity is often higher to can guarantee that glue can not unexpected flow. In other embodiments, the glue pushing member may be replaced by a deformable reservoir capsule, such as a structure similar to an ink cartridge of ink, which may be pushed by squeezing the reservoir capsule to push the glue against the front face of the ferrule.
In the above embodiments, the outer side wall of the connecting cap 21 is provided with a vent hole 27 to vent and discharge the excess glue, and the aperture of the vent hole 27 is 0.5mm, in other embodiments, the number and diameter of the vent holes 27 can be adjusted correspondingly according to the type, viscosity, and other factors of the glue, and the diameter is preferably 0.3mm to 0.7mm. Additionally, in other embodiments, the vent 27 may also be located immediately adjacent the socket section 22.
In the above embodiment, the glue sleeve is in sealing fit with the connecting cap 21 through the sealing ring 29, and in other embodiments, sealing can be achieved in other manners. For example, a ring is provided on the outer peripheral surface of the connecting cap 21, and the ring is in interference fit with the inner wall of the glue cap 30 to realize sealing.
In the above embodiment, the inner diameter of the glue channel 23 is smaller than the inner diameter of the socket section 22, and the joint of the two forms an annular step surface 25 facing the rear for the front end face of the ferrule 12 to butt against, in other embodiments, the inner diameter of the glue channel 23 may be the same as the inner diameter of the socket section 22, so that the inner wall of the socket section 22 is guaranteed to be in sealing fit with the outer peripheral surface of the front end of the ferrule 12, so as to avoid glue flowing to the side wall of the ferrule 12.
In the above embodiment, the stop piece 28 is provided on the outer side surface of the connection cap 21 to prevent the glue cap 30 from being collided by mistake when not in use, and in other embodiments, the glue cap 30 can be prevented from being collided by mistake when not in use by other means. For example, a U-shaped snap ring is provided between the end face of the glue cap 30 and the flange 26 of the connection cap 21, the snap ring is stopped between the end face of the glue cap 30 and the flange 26 of the connection cap 21, and when in use, the snap ring is pulled out along the radial direction of the connection cap 21, so that the limit of the glue cap 30 can be released.
Claims (9)
1. The injecting glue ware of fiber connector, its characterized in that: the connecting cap is provided with a sleeving section used for being in sealing fit with the front end of the ceramic ferrule and a glue injection section connected with the sleeving section, a glue channel is arranged in the glue injection section and is communicated with the sleeving section, a glue pushing piece used for pushing glue to the front end face of the ceramic ferrule is arranged on the glue injection section, and an exhaust hole is formed in the side wall of the glue injection section at a position close to the sleeving section.
2. The glue injector of the fiber optic connector of claim 1, wherein: the glue pushing piece is a glue cap which is arranged on the glue injection section in a sliding sealing manner, and the glue cap is provided with an inner cavity for containing glue.
3. The glue injector of the fiber optic connector of claim 2, wherein: and a sealing ring is arranged between the glue injection section and the glue cap.
4. A glue injector for an optical fiber connector according to claim 1 or 2 or 3, characterized in that: the inner diameter of the glue channel is smaller than that of the sleeving section, and an annular step surface which faces to the rear and is used for butt joint of the front end surface of the ceramic ferrule is formed at the joint of the glue channel and the sleeving section.
5. The glue injector of the fiber optic connector of claim 4, wherein: the annular step surface is an inclined surface which is used for being matched with the APC end surface of the ceramic ferrule.
6. The glue injector of the fiber optic connector of claim 5, wherein: the outer peripheral surface of the sleeving section is provided with a positioning key or a positioning key groove which is used for being matched with the connector shell in a positioning way along the circumferential direction.
7. The glue injector of the fiber optic connector of claim 5, wherein: the glue passageway is close to the one end of cup jointing section and is equipped with the footpath section that the internal diameter reduces.
8. The glue injector of the fiber optic connector of claim 4, wherein: the distance between the hole wall of the exhaust hole, which is close to one side of the sleeving section, and the annular step surface is smaller than 1mm.
9. A glue injector for an optical fiber connector according to claim 1 or 2 or 3, characterized in that: the aperture range of the exhaust hole is 0.3 mm-0.7 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179556.6A CN109143488A (en) | 2018-10-10 | 2018-10-10 | Optical fiber connector and its caudal peduncle component |
| CN2018111795566 | 2018-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109541757A CN109541757A (en) | 2019-03-29 |
| CN109541757B true CN109541757B (en) | 2023-07-21 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811179556.6A Pending CN109143488A (en) | 2018-10-10 | 2018-10-10 | Optical fiber connector and its caudal peduncle component |
| CN201811642273.0A Active CN109541757B (en) | 2018-10-10 | 2018-12-29 | Glue injector of optical fiber connector |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811179556.6A Pending CN109143488A (en) | 2018-10-10 | 2018-10-10 | Optical fiber connector and its caudal peduncle component |
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| Country | Link |
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| CN (2) | CN109143488A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180517A (en) * | 2020-09-30 | 2021-01-05 | 上海光卓通信设备有限公司 | MT (MT) ferrule structure |
| CN113909071A (en) * | 2021-10-08 | 2022-01-11 | 南京沃福曼医疗科技有限公司 | Packaging method of OCT imaging probe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147310A (en) * | 1983-02-10 | 1984-08-23 | Sumitomo Electric Ind Ltd | Adhesive coating device of automatic fitting machine for cable terminal |
| EP0506003A1 (en) * | 1991-03-28 | 1992-09-30 | Munekata Co. Ltd. | Ferrule for optical fibers |
| US5913001A (en) * | 1996-08-06 | 1999-06-15 | Seiko Instruments Inc. | Optical connector assembling adhesive injection pipe and method of assembling an optical connector using the same |
| JP2014134578A (en) * | 2013-01-08 | 2014-07-24 | Auto Network Gijutsu Kenkyusho:Kk | Optical fiber attachment ferrule manufacturing method, optical fiber attachment ferrule and optical connector |
| CN105334582A (en) * | 2014-07-01 | 2016-02-17 | 泰科电子(上海)有限公司 | Insertion core device and manufacture method thereof |
-
2018
- 2018-10-10 CN CN201811179556.6A patent/CN109143488A/en active Pending
- 2018-12-29 CN CN201811642273.0A patent/CN109541757B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147310A (en) * | 1983-02-10 | 1984-08-23 | Sumitomo Electric Ind Ltd | Adhesive coating device of automatic fitting machine for cable terminal |
| EP0506003A1 (en) * | 1991-03-28 | 1992-09-30 | Munekata Co. Ltd. | Ferrule for optical fibers |
| US5913001A (en) * | 1996-08-06 | 1999-06-15 | Seiko Instruments Inc. | Optical connector assembling adhesive injection pipe and method of assembling an optical connector using the same |
| JP2014134578A (en) * | 2013-01-08 | 2014-07-24 | Auto Network Gijutsu Kenkyusho:Kk | Optical fiber attachment ferrule manufacturing method, optical fiber attachment ferrule and optical connector |
| CN105334582A (en) * | 2014-07-01 | 2016-02-17 | 泰科电子(上海)有限公司 | Insertion core device and manufacture method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109143488A (en) | 2019-01-04 |
| CN109541757A (en) | 2019-03-29 |
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