CN105242358B - Optical fiber connector capable of accurate positioning - Google Patents
Optical fiber connector capable of accurate positioning Download PDFInfo
- Publication number
- CN105242358B CN105242358B CN201510791313.8A CN201510791313A CN105242358B CN 105242358 B CN105242358 B CN 105242358B CN 201510791313 A CN201510791313 A CN 201510791313A CN 105242358 B CN105242358 B CN 105242358B
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- China
- Prior art keywords
- connector
- locking wheel
- connector body
- joints
- head
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- 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.)
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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
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
- G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
Abstract
The invention discloses an optical fiber connector capable of accurate positioning, which comprises a connector socket and a connector plug, wherein the connector socket comprises a connector socket base, a locking wheel pressure ring, a locking wheel and an operating handle, and the connector socket base is fixed to an optical bottom plate of a confocal imaging system in a rigid manner; the locking wheel pressure ring, the locking wheel and the operating handle form a locking and limiting mechanism of the connector socket; the head part of the connector plug is provided with an axial positioning head, a rotary positioning head is arranged behind the axial positioning head, an optical fiber bundle passes through a hollow hole, and the optical fiber bundle and the connector plug are fixed to each other after being leveled; and the hollow hole faces just to a circular light passing hole when connector plug is inserted to the bottom part of a positioning groove of the connector socket base, and focused laser is injected into the optical fiber bundle through the circular light passing hole. The optical fiber connector adds a rotary positioning function, limits the optical fiber to rotate around the axis, achieves positioning in the rotational direction, applies a pressure on the connector through a spring, ensures stable and reliable locking of the connector, and can control the pressure.
Description
Technical field
The invention belongs to optical technical field, can be with the pinpoint joints of optical fibre more particularly, to one kind.
Background technology
In the confocal imaging system based on fibre bundle, laser launched by laser instrument, by laser scanning device and coupling
Object lens are scanned to the end face of fibre bundle, by each core being injected into fibre bundle after Laser Focusing, each core
Diameter be about 2-3um.In the other end of fibre bundle, the laser of injection is focused on by speck mirror and is observed on object, quilt
Observed objects send fluorescence under the exciting of injection laser, and fluorescence is returned along same path by the core of fibre bundle,
Captured by detector eventually and be imaged.
In imaging process, scanning means can scan each core successively it is impossible to deviation, therefore how accurately fixed
Relative position between position coupling object lens and fibre bundle, is the major issue that confocal imaging system needs to solve.General
The joints of optical fibre have becket connector (ferrule connector, fc), physical connector (physical
Connector, pc), miniature a class connector (sub miniature a, sma) etc., these connectors are generally used for single-core fiber
Connection, rather than for fibre bundle connection, for positioning precision there is no too high requirement.Such as typical sma optical fiber
Connector, under the connector aperture of 850um, the deviation in aperture can reach 15um, can not meet pinpoint requirement,
Confocal imaging system is required for the light path of connector part is entered after each connection using the general joints of optical fibre
Row readjusts, and fibre bundle end face could be adjusted to preferable position.
Content of the invention
In order to solve above-mentioned technical problem, the present invention proposes one kind can be with the pinpoint joints of optical fibre, this connection
Device can improve the positioning precision between fibre bundle and laser focusing device, can be repeated several times and be accurately positioned, it is to avoid every time
Regulation to light path after connection, lift system stability and reliability.
The invention provides one kind can with the pinpoint joints of optical fibre, including connector body and connector plug,
Wherein:
Described connector body includes connector body pedestal, locking wheel trim ring, locking wheel and operation handle, connector
Socket base is rigidly fixed with the optical backplane of confocal imaging system；On connector body pedestal, have along axial line distribution
Circular light hole, axially position groove and rotational positioning groove；Wherein circular light hole is used for during laser scanning passing through light, axle
It is trapezoidal, latter half rectangular cross-section to locating slot first half section, for connector body with connector plug in axle
To be accurately positioned, rotational positioning groove is used for limiting connector plug and can not rotate along axial line；Locking wheel trim ring, lock
Bearing up pulley and operation handle, three collectively constitutes locking and the position-limit mechanism of connector body；
The head of connector plug has axially position head, consistent with the shape and size of axially position groove, in axially position
There is rotational positioning head at head rear, and consistent with the shape and size of rotational positioning groove, there are hollow hole, light in the axle center of connector plug
Pass through in the hollow hole of fine Shu Kecong, fibre bundle concordant with connector plug the latter two fix；Connect when connector plug inserts
After the positioning trench bottom of device socket base, hollow hole faces circular light hole, and the laser after focusing passes through circular light hole
Injection fibre bundle.
Compared with prior art, the joints of optical fibre that the present invention provides have the advantages that
Improve axially position precision, the position positioning precision of fibre bundle is brought up to 2 microns by more than ten microns, angle positions
Precision reaches 0.2 °；
Increase rotational positioning function, limit fibre bundle, along the rotation of axial line, realizes the positioning of direction of rotation；
Optimize retaining mechanism, increase limit function, pressure is applied it is ensured that the locking of connector is steady to connector by spring
Fixed reliable, pressure controllable.
Brief description
Fig. 1 is joints of optical fibre overall structure figure in the embodiment of the present invention；
Fig. 2 is the matching relationship schematic diagram of fiber connector socket and connector plug in the embodiment of the present invention, wherein Fig. 2
A () is profile, Fig. 2 (b) is 3d schematic diagram；
Fig. 3 is the locking of fiber connector socket and position-limit mechanism schematic diagram in the embodiment of the present invention；Wherein:
Front view when Fig. 3 a does not lock for connector body；
Front view when Fig. 3 b locks for connector body；
3d view when Fig. 3 c does not lock for connector body；
3d view when Fig. 3 d locks for connector body；
Cross section view when Fig. 3 e does not lock for connector body；
Cross section view when Fig. 3 f locks for connector body；
Fig. 3 g is the schematic diagram of the internal stopper slot 114 of locking wheel trim ring；
Fig. 4 is the assembling schematic diagram of optical fiber connector plug and fibre bundle in the embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.As long as additionally, involved technical characteristic in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
The present invention is made up of with connector body connector plug, and connector plug is fixed together with optical fiber, connector
Socket is fixed together with the other parts of confocal imaging system, and connector body carries locking and stopping means, realizes two
The connection of person and being accurately positioned.
Specifically, as shown in figure 1,10 is connector body pedestal, 11 is locking wheel trim ring, and 12 is locking wheel, and 13 is behaviour
Make handle, 20 is connector plug, and 21 is fibre bundle, and dotted line is the cooperation axial line 1 of each part.
Connector body pedestal 10 is rigidly fixed with the optical backplane of confocal imaging system.In connector body pedestal 10
On, there is circular light hole 101, axially position groove 102 and the rotational positioning groove 103 being distributed along axial line 1.Wherein circular thang-kng
Hole 101 is used for during laser scanning passing through light, and axially position groove 102 first half section is trapezoidal, and latter half section is square
Shape, is accurately positioned in axial with connector plug for connector body, and rotational positioning groove 103 is used for limiting connector plug
20 can not rotate along axial line 1.The shape of rotational positioning groove 103 can be triangle or rectangle, pros
The non-circular shape such as shape, rhombus, ellipse.
Locking wheel trim ring 11, locking wheel 12 and operation handle 13, three collectively constitutes locking and the limit of connector body
Position mechanism.Locking wheel trim ring 11 is rigidly connected with connector body pedestal 10, and limiting locking wheel 12 can only be along the direction of axial line 1
Rotate.There is multigroup stopper slot 114 inner side of locking wheel trim ring 11, and stopper slot 114 is uniformly distributed along the direction of axial line 1.Operation
Handle 13 is rigidly connected by bolt 14 with locking wheel 12, operator's rotatable handle 13 during use, drives locking wheel 12
Common rotation.There are positioning head via 123, the shape and size of positioning head via 123 and rotational positioning groove 103 in locking wheel 12 center
Identical.By multiple position-limit mechanisms being made up of with spring 125 bulb 124 on locking wheel 12, the direction along axial line 1 is uniformly divided
Cloth, equal with the quantity of stopper slot 114, when locking wheel 12 rotates, limiting bulb 124 can only be along spacing on locking wheel trim ring
Groove 114 moves, and ensures that locking wheel 12 is subject to the pressure that locking wheel trim ring 11 applies all the time.
The head of connector plug 20 has axially position 202, consistent with the shape and size of axially position groove 102,
There is rotational positioning 203 at axially position 202 rear, the shape and size one with rotational positioning groove 103 and positioning head via 123
Cause, there is hollow hole 201 in the axle center of connector plug 20, and fibre bundle 21 can pass through from hollow hole 201, with connector plug
20 concordant the latter two fix.After connector plug inserts the positioning trench bottom of connector body pedestal, hollow hole 201 is just right
Circular light hole 101, the laser after focusing passes through circular light hole 101 injection fibre bundle 21.
In Fig. 2,10 is connector body pedestal, and 20 is connector plug.Insert connector body base in connector plug 20
During the spacing hole of seat 10, the circular light hole 101 of connector body pedestal is tight with the axially position 202 of connector plug front end
Closely connected conjunction.The side wall of axially position 202 is coordinated for gap with the side wall of axially position groove 102, and fit clearance 1.5-2.5 is micro-
Rice.The side wall of rotational positioning 203 and the side wall of rotational positioning groove 103 also coordinate for gap, and fit clearance is that 1.5-2.5 is micro-
Rice.Leaving gap d 5 between rotational positioning head antetheca 2031 and rotational positioning groove antetheca 1031 is 0.4-0.6 millimeter.Rotational positioning
Head rear wall 2032 and the distance between rotational positioning groove rear wall d4 are 0.4-0.6mm.Connector body pedestal and connector plug
Each surface roughness of cooperation is less than 1 micron.
When connector body is locked with plug, rotational positioning head rear wall 2032 is subject to external pressure it is ensured that leading to circular light
Hole 101 is fitted tightly with the front end of axially position 202.
Axially position 202 point diameter d1 is 7.0 millimeters, and rear end diameter d2 is 10.0 millimeters, rotational positioning 203 3
Angular length of side d6 is 16.0 millimeters, and the aperture d3 of circular light hole 101 is 1.0 millimeters.
Under the above parameters, connector plug 20 can reach 2 with respect to the position positioning precision of connector body pedestal 10
Micron, precise angular positions, up to 0.2 °, are significantly better than the general joints of optical fibre.
In Fig. 3, front view when a does not lock for connector body；Front view when b locks for connector body；C is even
Connect 3d view when device socket is not locked；3d view when d locks for connector body；When e does not lock for connector body, section regards
Figure；Cross section view when f locks for connector body.G is the schematic diagram of the internal stopper slot 114 of locking wheel trim ring.
The working condition of the joints of optical fibre can be divided into non-locking state, rotation intermediateness, locking state.
Fig. 3-g is shown that the stopper slot 114 on locking wheel trim ring 11, the position at stopper slot 114 two ends 1141 and 1142
Relatively deep, the bulb 124 on locking wheel trim ring is in stopper slot 114 all the time.The depth of stopper slot 114 is 0.5 millimeter, stopper slot
114 end positions 1141 and 1142 are deepened, and depth is 1.0 millimeters, when locking wheel 12 rotates to locking state and non-locking state
When, provide spacing, it is to avoid rest on intermediateness.When the joints of optical fibre are in non-locking state, bulb 124 withstands on 1141
Put；When the joints of optical fibre are in locking state, bulb 124 withstands on 1142 positions；When the joints of optical fibre are in shape in the middle of rotation
During state, bulb 124 slides in 1141 and 1142 centre position.
The original state of the joints of optical fibre is unlocked, corresponding diagram 3-a, 3-c, 3-e.Now, on locking wheel 12
Positioning head via 123 overlap with the rotational positioning groove 103 on connector body pedestal 10, the rotational positioning of connector plug 20
203 can be along the triangular ducts insertion of positioning head via 123 and rotational positioning groove 103 composition.Now, on locking wheel 12
Bulb 124 be located at 1141 positions of stopper slot 114, by the active force of spring 125, keep the face 1232 of locking wheel 12 with even
The face 1032 connecing device socket base 10 fits tightly.
When rotating intermediateness, the rotation on positioning head via 123 and connector body pedestal 10 on locking wheel 12
Locating slot 103 gradually produces dislocation, stops extracting of connector plug 20.Bulb 124 on locking wheel 12 is all the time in locking wheel
Motion in stopper slot 114 on trim ring 11, and locking wheel 12 is promoted by spring 125, to connector body pedestal 10 direction pressure
Tightly.
When bulb 124 moves to 1142 position, the joints of optical fibre are in locking state, corresponding diagram 3-b, 3-d, 3-f.This
When, the bulb 124 on locking wheel 12 is located at the position 1142 of stopper slot 114, by the active force of spring 125, keeps locking wheel
12 face 1232 is fitted tightly with the face 2032 of connector plug 20.
Never locking state enters intermediateness, and when locking state enters intermediateness, is required for using larger
Spinning force, act on bulb 124, compression spring 125 so that bulb 124 from the two ends left end 1141 of stopper slot 114 or
Depart from right-hand member 1142.Such design guarantees that the joints of optical fibre operationally will not take off because of by External force interference
Fall.o
Fig. 4 is the assembling schematic diagram of fibre bundle and connector plug.In figure 20 is connector plug, and 201 is plug head
Hole, 21 is fibre bundle, and 22 is general high-precision ceramic insertion core.The central authorities that fibre bundle 21 is firstly inserted into ceramic insertion core 22 lead to
It is adhesively fixed in hole, the two co-ground is smooth.Then ceramic insertion core 22 is inserted in hollow hole 201, fiber end face with
Aliging in connector plug 20 front end, then is fixed bonding.Complete to assemble by such method.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should comprise
Within protection scope of the present invention.
Claims (10)
1. one kind can with the pinpoint joints of optical fibre it is characterised in that including connector body and connector plug (20),
Wherein:
Described connector body includes connector body pedestal (10), locking wheel trim ring (11), locking wheel (12) and manipulator
Handle (13), connector body pedestal (10) is rigidly fixed with the optical backplane of confocal imaging system；In connector body pedestal
(10), on, there is circular light hole (101), axially position groove (102) and the rotational positioning groove (103) being distributed along axial line (1)；
Wherein circular light hole (101) is used for during laser scanning passing through light, and axially position groove (102) first half section is trapezoidal,
Latter half rectangular cross-section, is accurately positioned in axial with connector plug (20) for connector body, rotational positioning groove
(103) it is used for limiting connector plug (20) and can not rotate along axial line (1)；Locking wheel trim ring (11), locking wheel
(12) and operation handle (13), three collectively constitutes locking and the position-limit mechanism of connector body；
The head of connector plug (20) has axially position head (202), consistent with the shape and size of axially position groove (102),
There is rotational positioning head (203) at axially position head (202) rear, consistent with the shape and size of rotational positioning groove (103), connect
There is hollow hole (201) in the axle center of device plug (20), and fibre bundle (21) can pass through from hollow hole (201), fibre bundle (21)
Concordant with connector plug (20) the latter two fix；After connector plug inserts the positioning trench bottom of connector body pedestal,
Hollow hole (201) faces circular light hole (101), and the laser after focusing passes through circular light hole (101) injection fibre bundle
(21).
2. the joints of optical fibre as claimed in claim 1 it is characterised in that locking wheel trim ring (11), locking wheel (12) and
In locking and position-limit mechanism that operation handle (13) three collectively constitutes, locking wheel trim ring (11) and connector body pedestal (10)
It is rigidly connected, limiting locking wheel (12) can only rotate along the direction of axial line (1)；There is multigroup limit the inner side of locking wheel trim ring (11)
Position groove (114), stopper slot (114) is uniformly distributed along the direction of axial line (1)；Operation handle (13) passes through spiral shell with locking wheel (12)
Bolt (14) is rigidly connected, operator's rotatable handle (13) during use, drives the common rotation of locking wheel (12)；Locking wheel
(12) there is positioning head via (123) at center, and the shape and size of positioning head via (123) are identical with rotational positioning groove (103)；?
By multiple position-limit mechanisms being made up of bulb (124) and spring (125) on locking wheel (12), uniform along the direction of axial line (1)
Distribution, equal with the quantity of stopper slot (114), when locking wheel (12) rotates, limiting bulb (124) can only be along locking wheel trim ring
On stopper slot (114) motion, and ensure the pressure that locking wheel (12) is applied by locking wheel trim ring (11) all the time；
When described fibre bundle (21) is assembled with connector plug (20), fibre bundle (21) inserts the center through hole of ceramic insertion core (22)
In, and make the two smooth, then ceramic insertion core (22) is inserted in hollow hole (201), fiber end face and connector plug
(20) fixing after the alignment of front end.
3. the joints of optical fibre as claimed in claim 1 are it is characterised in that described rotational positioning groove (103) is non-circular shape.
4. the joints of optical fibre as claimed in claim 3 it is characterised in that described rotational positioning groove (103) be triangle, or
Rectangle, or rhombus, or oval.
5. the joints of optical fibre as claimed in claim 1 or 2 are it is characterised in that insert in connector plug (20) insertion connector
During the spacing hole of seat pedestal (10), the circular light hole (101) of connector body pedestal is fixed with the axial direction of connector plug front end
Potential head (202) fits tightly.
6. the joints of optical fibre as claimed in claim 1 or 2 are it is characterised in that axially position head (202) side wall and axially position
The side wall of groove (102) coordinates for gap, and fit clearance is 1.5-2.5 micron.
7. the joints of optical fibre as claimed in claim 1 or 2 are it is characterised in that the side wall of rotational positioning head (203) is fixed with rotation
The side wall of position groove (103) coordinates for gap, and fit clearance is 1.5-2.5 micron.
8. the joints of optical fibre as claimed in claim 1 or 2 are it is characterised in that rotational positioning head antetheca (2031) is fixed with rotation
Leaving gap d 5 between position groove antetheca (1031) is 0.4-0.6 millimeter.
9. the joints of optical fibre as claimed in claim 1 or 2 are it is characterised in that rotational positioning head rear wall (2032) is fixed with rotation
The distance between position groove rear wall d4 is 0.4-0.6mm.
10. the joints of optical fibre as claimed in claim 1 or 2 are it is characterised in that connector body pedestal (10) is inserted with connector
Each surface roughness that head (20) coordinates is less than 1 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791313.8A CN105242358B (en) | 2015-11-17 | 2015-11-17 | Optical fiber connector capable of accurate positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791313.8A CN105242358B (en) | 2015-11-17 | 2015-11-17 | Optical fiber connector capable of accurate positioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105242358A CN105242358A (en) | 2016-01-13 |
| CN105242358B true CN105242358B (en) | 2017-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510791313.8A Active CN105242358B (en) | 2015-11-17 | 2015-11-17 | Optical fiber connector capable of accurate positioning |
Country Status (1)
| Country | Link |
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| CN (1) | CN105242358B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065077B (en) * | 2017-03-16 | 2019-11-05 | 精微视达医疗科技（武汉）有限公司 | A kind of fiber bundle coupling device of auto-focusing positioning |
| CN107219592B (en) * | 2017-07-03 | 2019-04-19 | 华中科技大学鄂州工业技术研究院 | A kind of fiber coupler for locking identification |
| CN108940751B (en) * | 2018-09-12 | 2020-09-11 | 苏州猎奇智能设备有限公司 | Automatic coupling device |
| CN114413767B (en) * | 2022-01-24 | 2023-06-13 | 中国工程物理研究院机械制造工艺研究所 | Precise rotary positioning and adjusting device for laser transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487054A2 (en) * | 1990-11-19 | 1992-05-27 | Japan Aviation Electronics Industry, Limited | Optical connector comprising an optical connection adapter with means for connection/disconnection of an optical contact |
| US6644862B1 (en) * | 2002-09-25 | 2003-11-11 | Agilent Technolgies, Inc. | Optical mount |
| CN201397406Y (en) * | 2009-03-03 | 2010-02-03 | 中航光电科技股份有限公司 | Optical fiber connector |
| CN205121018U (en) * | 2015-11-17 | 2016-03-30 | 精微视达医疗科技（武汉）有限公司 | Fiber connector that can accurate positioning |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9004779B2 (en) * | 2010-07-19 | 2015-04-14 | 3M Innovative Properties Company | Assembly tool and optical fiber connector assembly method |
-
2015
- 2015-11-17 CN CN201510791313.8A patent/CN105242358B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487054A2 (en) * | 1990-11-19 | 1992-05-27 | Japan Aviation Electronics Industry, Limited | Optical connector comprising an optical connection adapter with means for connection/disconnection of an optical contact |
| US6644862B1 (en) * | 2002-09-25 | 2003-11-11 | Agilent Technolgies, Inc. | Optical mount |
| CN201397406Y (en) * | 2009-03-03 | 2010-02-03 | 中航光电科技股份有限公司 | Optical fiber connector |
| CN205121018U (en) * | 2015-11-17 | 2016-03-30 | 精微视达医疗科技（武汉）有限公司 | Fiber connector that can accurate positioning |
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| CN105242358A (en) | 2016-01-13 |
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Effective date of registration: 20210120 Address after: 430014 room 205, 2nd floor, Guoyao building, building A21, biological innovation park, 666 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Jingwei Zhiyuan medical technology (Wuhan) Co.,Ltd. Address before: Room 619, building A4, overseas talents building, future science and Technology City, 999 Gaoxin Avenue, Donghu Development Zone, Wuhan City, Hubei Province, 430074 Patentee before: JINGWEI SHIDA MEDICAL TECHNOLOGY (WUHAN) Co.,Ltd. |
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