CN114185134A - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
- Publication number
- CN114185134A CN114185134A CN202111604095.4A CN202111604095A CN114185134A CN 114185134 A CN114185134 A CN 114185134A CN 202111604095 A CN202111604095 A CN 202111604095A CN 114185134 A CN114185134 A CN 114185134A
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- China
- Prior art keywords
- optical fiber
- mounting groove
- metal pipe
- metal tube
- sleeve
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- 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
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- 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
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
- G02B6/322—Optical coupling means having lens focusing means positioned between opposed fibre ends and having centering means being part of the lens for the self-positioning of the lightguide at the focal point, e.g. holes, wells, indents, nibs
Abstract
The invention discloses an optical fiber collimator, which comprises: the optical fiber connector comprises a first metal tube, a collimating lens, an optical fiber ferrule, a sleeve and a second metal tube; the first metal pipe comprises a first mounting groove and a second mounting groove; the collimating lens is arranged in the first mounting groove; one end of the optical fiber inserting core is inserted into the second mounting groove, the optical fiber inserting core is provided with an optical fiber hole for accommodating an optical fiber, and the optical fiber hole penetrates through the optical fiber inserting core along the axial direction of the optical fiber inserting core; the sleeve is sleeved outside the other end of the optical fiber ferrule; the second metal pipe is sleeved outside the sleeve; wherein an insulating part used for isolating the first metal pipe and the second metal pipe is arranged between the first metal pipe and the second metal pipe. According to the optical fiber collimator provided by the invention, the collimating lens and the optical fiber ferrule are integrated together through the arrangement of the first metal tube and the second metal tube, and the insulation part is adopted for insulation, so that compared with the existing design, the integration level of a device can be improved, the size of the device is reduced, and the miniaturization of the device is facilitated.
Description
Technical Field
The present invention relates to the field of optical communication technology, and more particularly, to an optical fiber collimator suitable for a single-fiber bidirectional module.
Background
With the rapid development of the optical communication industry, the 5G communication technology gradually enters the commercial stage, and the demand of the optical module is further promoted. The integration level of the optical communication device is required to be higher and lower, and the size requirement is smaller and smaller.
The existing optical fiber collimator, collimating lens and inserting core are split, and the insulating structure adopts an air insulating mode, so that the size of the device is large, and the improvement of the integration level is not facilitated.
Therefore, there is a need to provide a new fiber collimator to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide an optical fiber collimator which has higher integration level and is beneficial to reducing the size of a device.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a fiber collimator, comprising:
the first metal pipe comprises a first mounting groove and a second mounting groove, and the first mounting groove is communicated with the second mounting groove and penetrates through the first metal pipe along the axial direction of the first metal pipe;
the collimating lens is arranged in the first mounting groove;
one end of the optical fiber inserting core is inserted into the second mounting groove, the optical fiber inserting core is provided with an optical fiber hole for accommodating an optical fiber, and the optical fiber hole penetrates through the optical fiber inserting core along the axial direction of the optical fiber inserting core;
the sleeve is sleeved outside the other end of the optical fiber ferrule;
the second metal pipe is sleeved outside the sleeve;
wherein an insulating part for isolating the first metal pipe and the second metal pipe is arranged between the first metal pipe and the second metal pipe.
In one or more embodiments, the insulating member includes a main body portion and a flange portion, the flange portion is protruded on an outer circumferential surface of the main body portion, the main body portion is sleeved outside the sleeve, and the flange portion is obstructed between the first metal pipe and the second metal pipe so as to insulate the first metal pipe and the second metal pipe from each other.
In one or more embodiments, a first clamping groove is formed in an end portion, adjacent to the insulating member, of the first metal pipe, a first clamping portion matched with the first clamping groove is formed in a main body portion of the insulating member, and the first clamping groove is clamped on the first clamping portion;
a second clamping groove is formed in the end part, adjacent to the insulating part, of the second metal pipe, a second clamping part matched with the second clamping groove is formed in the main body part of the insulating part, and the second clamping groove is clamped on the second clamping part; the first buckling part and the second buckling part are respectively positioned on two sides of the flange part.
In one or more embodiments, a first chamfered portion is disposed at an outer edge of the first fastening portion, a second chamfered portion is disposed at an outer edge of the second fastening portion, a third chamfered portion engaged with the first chamfered portion is disposed at an inner edge of the first card slot, and a fourth chamfered portion engaged with the second chamfered portion is disposed at an inner edge of the second card slot.
In one or more embodiments, one end of the first metal tube, which is far away from the insulating member, is provided with a mounting inclined surface for mounting a filter, and the mounting inclined surface extends obliquely from the end surface of the first metal tube to one side, which is far away from the insulating member.
In one or more embodiments, a boss is disposed between the first mounting groove and the second mounting groove, and the boss is blocked between the collimating lens and the fiber stub.
In one or more embodiments, the boss is annular, and the boss has a through hole communicating the first mounting groove and the second mounting groove, and the diameter of the through hole is smaller than the inner diameter of the first mounting groove and the second mounting groove.
In one or more embodiments, the collimating lens is a spherical lens.
In one or more embodiments, an outer diameter of the sleeve is smaller than an inner diameter of the second metal pipe, a gap is formed between the sleeve and the second metal pipe, and the gap is filled with insulating glue.
In one or more embodiments, an inner circumferential surface of an end portion of the second metal pipe, which is far away from the insulating member, is convexly provided with an annular protruding portion, and an inner diameter of the protruding portion is smaller than an outer diameter of the sleeve and is equal to or larger than the inner diameter of the sleeve.
Compared with the prior art, the optical fiber collimator provided by the invention integrates the collimating lens and the optical fiber ferrule together through the arrangement of the first metal tube and the second metal tube, and adopts the insulating part for insulation, so that compared with the existing design, the integration level of a device can be improved, the size of the device is reduced, and the miniaturization of the device is facilitated.
Drawings
FIG. 1 is a schematic perspective view of a fiber collimator according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the fiber collimator of FIG. 1;
FIG. 3 is an exploded view of the fiber collimator of FIG. 1;
FIG. 4 is a cross-sectional view of a first metal tube of the fiber collimator of FIG. 1;
FIG. 5 is a cross-sectional view of a second metal tube of the fiber collimator of FIG. 1;
FIG. 6 is a cross-sectional view of the insulation in the fiber collimator of FIG. 1;
FIG. 7 is a schematic diagram of an application scenario of the fiber collimator shown in FIG. 1.
Description of the main reference numerals:
1-a first metal tube, 11-a first mounting groove, 12-a second mounting groove, 13-a boss, 14-a mounting inclined plane, 15-a first clamping groove, 16-a third chamfer part, 17-a through hole, 2-a collimating lens, 3-an optical fiber inserting core, 31-an optical fiber hole, 4-a sleeve, 41-a containing cavity, 42-an opening part, 5-a second metal tube, 51-a second clamping groove, 52-a bulge part, 53-a fourth chamfer part, 6-an insulating part, 61-a main body part, 62-a flange, 63-a first buckling part, 64-a second buckling part, 65-a first chamfer part and 66-a second chamfer part.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Referring to fig. 1 to 7, an optical fiber collimator according to an embodiment of the present invention includes: the optical fiber connector comprises a first metal tube 1, a collimating lens 2, an optical fiber ferrule 3, a sleeve 4 and a second metal tube 5.
Referring to fig. 2, 3 and 4, the first metal pipe 1 includes a first mounting groove 11 and a second mounting groove 12, and the first mounting groove 11 is communicated with the second mounting groove 12 and penetrates the first metal pipe 1 along the axial direction of the first metal pipe 1. The first installation groove 11 extends backwards from the front end of the first metal pipe 1, the second installation groove 12 extends forwards from the rear end of the first metal pipe 1, and the diameter of the first installation groove 11 is smaller than that of the second installation groove 12.
Specifically, referring to fig. 7, a mounting inclined surface 14 for mounting a filter is disposed at one end (front end) of the first metal tube 1 away from the insulator 6, and the mounting inclined surface 14 extends obliquely from the front end of the first metal tube 1 to a side away from the insulator 6. The inclined angle of the mounting inclined surface 14 can be designed according to actual needs, and is preferably 30-60 degrees. By installing the filter on the mounting inclined plane 14, the optical fiber collimator can realize a single-fiber bidirectional function, and the optical path after installing the filter is shown by a dotted arrow in fig. 7.
Specifically, a boss 13 is disposed between the first mounting groove 11 and the second mounting groove 12, and the boss 13 is blocked between the collimator lens 2 and the fiber stub 3 to prevent the collimator lens 2 from entering the second mounting groove 12 from the first mounting groove 11. This boss 13 is the annular setting, and this boss 13 has a intercommunication first mounting groove 11 with the through-hole 17 of second mounting groove 12, this through-hole 17 and first mounting groove 11 and the coaxial setting of second mounting groove 12 to optical signal's propagation is convenient for. Preferably, the diameter of the through hole 17 is smaller than the inner diameters of the first and second mounting grooves 11 and 12.
Referring to fig. 2 and 3, the collimating lens 2 is a spherical lens, which is convenient for installation, and is beneficial to improving the integration and reducing the size.
Referring to fig. 2 and 3, the front end of the optical fiber ferrule 3 is inserted into the second mounting groove 12, the optical fiber ferrule 3 has an optical fiber hole 31 for receiving an optical fiber, and the optical fiber hole 31 penetrates through the optical fiber ferrule 3 along the axial direction of the optical fiber ferrule 3. The diameter of the optical fiber hole 31 is set to be slightly larger than that of the optical fiber so as to facilitate smooth insertion of the optical fiber, and when one end of the optical fiber is abutted, the optical fiber can be slightly elastically bent in the optical fiber hole 31 so that the optical fiber maintains a certain degree of elastic tension.
Specifically, the front end face of the fiber stub 3 is disposed in an inclined plane, i.e., the front end face of the fiber stub 3 is not perpendicular to the axis thereof. The optical fiber ferrule 3 is substantially cylindrical and is made of a ceramic material. The edge of the rear end face of the optical fiber ferrule 3 is formed with a chamfer so as to facilitate the assembly and butt joint of the optical fiber ferrule 3 and the sleeve 4.
Referring to fig. 2, 3 and 5, the second metal pipe 5 is sleeved outside the rear end of the sleeve 4. The guide sleeve 4 is substantially in the form of a circular sleeve and is made of ceramic material and has an axially through-going receiving space 41. The sleeve 4 is sleeved outside the rear end of the optical fiber ferrule 3 and is coaxially arranged with the optical fiber ferrule 3, and the extending length of the optical fiber ferrule 3 in the accommodating cavity 41 is less than the length of the accommodating cavity 41, so as to reserve a space for aligning the butt joint of other devices. Preferably, the fiber stub 3 is an interference fit with the ferrule 4.
Specifically, the outer diameter of the sleeve 4 is configured to be smaller than the inner diameter of the second metal pipe 5, so that a gap is formed between the sleeve 4 and the second metal pipe 5, and the gap is filled with insulating glue, and the insulating glue can fixedly connect the sleeve 4 and the second metal pipe 5.
Specifically, the tube wall of the ferrule 4 is provided with an opening portion 42 extending in the axial direction of the ferrule 4, the opening portion 42 penetrating the inner surface and the outer surface of the ferrule 4, and the opening portion 42 penetrating the front end surface and the rear end surface of the ferrule 4. The inside of the accommodating cavity 41 of the sleeve 4 can be observed through the opening part 42, so that the optical fiber ferrule 3 can be conveniently installed and aligned in an inserting mode, the opening part 42 can play a role in exhausting, and an air cavity is prevented from being formed between the optical fiber ferrule 3 and the sleeve 4.
Referring to fig. 2, 3 and 6, an insulating member 6 for isolating the first metal pipe 1 from the second metal pipe 5 is disposed between the first metal pipe 1 and the second metal pipe 5, and the insulating member 6 can insulate the first metal pipe 1 from the second metal pipe 5. By adopting the insulating member 6 for isolation and insulation, compared with the existing air insulation structure, the size of the device can be reduced while the insulation performance is ensured, and the integration level is improved. Preferably, the insulating member 6 may be made of insulating material such as PEEK (polyether ether ketone), PEI (polyetherimide), or the like.
Specifically, the insulating member 6 includes a main body portion 61 and a flange 62, the flange 62 is protruded from the outer peripheral surface of the main body portion 61, the main body portion 61 is sleeved outside the sleeve 4, and the flange 62 is isolated between the first metal pipe 1 and the second metal pipe 5, so that the first metal pipe 1 and the second metal pipe 5 are insulated from each other. The inner diameter of the main body portion 61 is set larger than the outer diameter of the sleeve 4 so that a gap is formed between the main body portion 61 and the sleeve 4, and the gap can be filled with an insulating paste to fixedly connect the insulating member 6 and the sleeve 4.
Specifically, a first clamping groove 15 is formed in an end portion (a rear end portion of the first metal pipe 1) of the first metal pipe 1, which is adjacent to the insulating member 6, a first clamping portion 63 matched with the first clamping groove 15 is formed in the main body portion 61 of the insulating member 6, and the first clamping groove 15 is clamped on the first clamping portion 63, so that clamping between the first metal and the insulating member 6 is achieved. A second clamping groove 51 is formed in the end portion (the front end portion of the second metal tube 5) of the second metal tube 5, which is adjacent to the insulating member 6, a second clamping portion 64 matched with the second clamping groove 51 is formed in the main body portion 61 of the insulating member 6, and the second clamping groove 51 is clamped in the second clamping portion 64 so as to realize clamping between the second metal and the insulating member 6. The first locking portion 63 and the second locking portion 64 are respectively located on two sides of the flange 62.
Specifically, a first chamfered portion 65 is provided at an outer edge of the first locking portion 63, a second chamfered portion 66 is provided at an outer edge of the second locking portion 64, a third chamfered portion 16 engaged with the first chamfered portion 65 is provided at an inner edge of the first locking groove 15, and a fourth chamfered portion 53 engaged with the second chamfered portion 66 is provided at an inner edge of the second locking groove 51. The first metal pipe 1 and the second metal pipe 5 can be clamped with the insulating part 6 through the chamfering part, so that the guide effect is achieved, and the assembly is convenient.
Specifically, an annular protrusion 52 is protruded from an inner peripheral surface of an end portion (rear end portion of the second metal) of the second metal pipe 5 away from the insulator 6, and an inner diameter of the protrusion 52 is smaller than an outer diameter of the sleeve 4 and equal to or larger than an inner diameter of the sleeve 4. The provision of the projection 52 makes it possible to confine the sleeve 4 within the second metal tube 5.
In summary, the optical fiber collimator provided by the present invention integrates the collimating lens 2 and the optical fiber ferrule 3 together through the arrangement of the first metal tube 1 and the second metal tube 5, and adopts the insulating member 6 for insulation, so as to improve the integration level of the device, reduce the size of the device, and facilitate the miniaturization of the device compared with the existing design.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A fiber collimator, comprising:
the first metal pipe comprises a first mounting groove and a second mounting groove, and the first mounting groove is communicated with the second mounting groove and penetrates through the first metal pipe along the axial direction of the first metal pipe;
the collimating lens is arranged in the first mounting groove;
one end of the optical fiber inserting core is inserted into the second mounting groove, the optical fiber inserting core is provided with an optical fiber hole for accommodating an optical fiber, and the optical fiber hole penetrates through the optical fiber inserting core along the axial direction of the optical fiber inserting core;
the sleeve is sleeved outside the other end of the optical fiber ferrule;
the second metal pipe is sleeved outside the sleeve;
wherein an insulating part for isolating the first metal pipe and the second metal pipe is arranged between the first metal pipe and the second metal pipe.
2. The fiber collimator of claim 1, wherein the insulating member includes a main body portion and a flange portion, the flange portion is protruded from an outer circumferential surface of the main body portion, the main body portion is sleeved outside the sleeve, and the flange portion is blocked between the first metal tube and the second metal tube to insulate the first metal tube and the second metal tube from each other.
3. The optical fiber collimator as claimed in claim 2, wherein a first locking groove is provided on an end portion of the first metal tube adjacent to the insulating member, a first locking portion matched with the first locking groove is provided on the main body portion of the insulating member, and the first locking groove is locked on the first locking portion;
a second clamping groove is formed in the end part, adjacent to the insulating part, of the second metal pipe, a second clamping part matched with the second clamping groove is formed in the main body part of the insulating part, and the second clamping groove is clamped on the second clamping part;
the first buckling part and the second buckling part are respectively positioned on two sides of the flange part.
4. The fiber collimator of claim 3, wherein the first latch portion has a first chamfered portion at an outer edge thereof, the second latch portion has a second chamfered portion at an outer edge thereof, the first latch portion has a third chamfered portion at an inner edge thereof, and the second latch portion has a fourth chamfered portion at an inner edge thereof.
5. The optical fiber collimator as claimed in any one of claims 1 to 4, wherein an end of the first metal tube away from the insulator is provided with a mounting slope for mounting a filter, and the mounting slope extends obliquely from an end surface of the first metal tube to a side away from the insulator.
6. The fiber collimator of claim 5, wherein a boss is disposed between the first mounting groove and the second mounting groove, the boss being blocked between the collimating lens and the fiber stub.
7. The optical fiber collimator of claim 6, wherein the boss is ring-shaped and has a through hole communicating the first mounting groove and the second mounting groove, and the diameter of the through hole is smaller than the inner diameter of the first mounting groove and the second mounting groove.
8. The fiber collimator of any of claims 1-4, wherein the collimating lens is a spherical lens.
9. The optical fiber collimator of any one of claims 1 to 4, wherein an outer diameter of the sleeve is smaller than an inner diameter of the second metal tube, a gap is formed between the sleeve and the second metal tube, and the gap is filled with an insulating glue.
10. The optical fiber collimator of claim 9, wherein an inner peripheral surface of an end portion of the second metal tube remote from the insulating member is convexly provided with a ring-shaped protrusion portion having an inner diameter smaller than an outer diameter of the ferrule and equal to or larger than an inner diameter of the ferrule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111604095.4A CN114185134B (en) | 2021-12-24 | 2021-12-24 | Optical fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111604095.4A CN114185134B (en) | 2021-12-24 | 2021-12-24 | Optical fiber collimator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114185134A true CN114185134A (en) | 2022-03-15 |
| CN114185134B CN114185134B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111604095.4A Active CN114185134B (en) | 2021-12-24 | 2021-12-24 | Optical fiber collimator |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002328268A (en) * | 2001-02-28 | 2002-11-15 | Sumitomo Electric Ind Ltd | Optical module |
| JP2004133299A (en) * | 2002-10-11 | 2004-04-30 | Seiko Instruments Inc | Optical module |
| JP2005070568A (en) * | 2003-08-26 | 2005-03-17 | Kyocera Corp | Optical module |
| US20050244109A1 (en) * | 2004-04-20 | 2005-11-03 | Hiroyuki Yabe | Optical sub-assembly having an enhanced discharge-resistant arrangement and an optical transceiver using the same |
| CN107238939A (en) * | 2017-08-08 | 2017-10-10 | 成都优博创通信技术股份有限公司 | A kind of confocal face optical fiber collimator and optical fiber |
| US20180113261A1 (en) * | 2016-10-20 | 2018-04-26 | OE Solutions Co., Ltd. | Optical module and optical transceiver including the same |
| CN109239853A (en) * | 2018-11-15 | 2019-01-18 | 成都优博创通信技术股份有限公司 | A kind of light path device and optical device applied to improvement return loss index |
| CN210199353U (en) * | 2019-07-25 | 2020-03-27 | 高安天孚光电技术有限公司 | Collimator subassembly of excellent performance |
| CN214669714U (en) * | 2021-01-12 | 2021-11-09 | 富晋精密工业（晋城）有限公司 | Optical fiber collimator |
-
2021
- 2021-12-24 CN CN202111604095.4A patent/CN114185134B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002328268A (en) * | 2001-02-28 | 2002-11-15 | Sumitomo Electric Ind Ltd | Optical module |
| JP2004133299A (en) * | 2002-10-11 | 2004-04-30 | Seiko Instruments Inc | Optical module |
| JP2005070568A (en) * | 2003-08-26 | 2005-03-17 | Kyocera Corp | Optical module |
| US20050244109A1 (en) * | 2004-04-20 | 2005-11-03 | Hiroyuki Yabe | Optical sub-assembly having an enhanced discharge-resistant arrangement and an optical transceiver using the same |
| US20180113261A1 (en) * | 2016-10-20 | 2018-04-26 | OE Solutions Co., Ltd. | Optical module and optical transceiver including the same |
| CN107238939A (en) * | 2017-08-08 | 2017-10-10 | 成都优博创通信技术股份有限公司 | A kind of confocal face optical fiber collimator and optical fiber |
| CN109239853A (en) * | 2018-11-15 | 2019-01-18 | 成都优博创通信技术股份有限公司 | A kind of light path device and optical device applied to improvement return loss index |
| CN210199353U (en) * | 2019-07-25 | 2020-03-27 | 高安天孚光电技术有限公司 | Collimator subassembly of excellent performance |
| CN214669714U (en) * | 2021-01-12 | 2021-11-09 | 富晋精密工业（晋城）有限公司 | Optical fiber collimator |
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| CN114185134B (en) | 2023-05-23 |
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