CN209281013U - A kind of solution EMC and EMI electromagnetic compatibility optical module - Google Patents
A kind of solution EMC and EMI electromagnetic compatibility optical module Download PDFInfo
- Publication number
- CN209281013U CN209281013U CN201822020621.2U CN201822020621U CN209281013U CN 209281013 U CN209281013 U CN 209281013U CN 201822020621 U CN201822020621 U CN 201822020621U CN 209281013 U CN209281013 U CN 209281013U
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- China
- Prior art keywords
- optical
- lower case
- electromagnetic compatibility
- optical module
- optical port
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- 230000003287 optical effect Effects 0.000 title claims abstract description 104
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 238000012216 screening Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses a kind of solution EMC and EMI electromagnetic compatibility optical module, including lower case and electro-magnetic wave absorption part, described lower case one end is equipped with optical port, the optical port and lower casing body by integral forming, the optical port is opened up there are two through-hole, described two through-holes are respectively used to passing through for optical transmitting set and optical receiver, the electro-magnetic wave absorption part offers via hole corresponding with through-hole, the electro-magnetic wave absorption part pushes against the surface of optical port, and via hole is corresponding with through-hole, the optical transmitting set and optical receiver sequentially pass through the through-hole of the via hole of electro-magnetic wave absorption part, optical port.A kind of solution EMC and EMI electromagnetic compatibility optical module provided by the utility model, the effective electromagnetic-wave leakage for reducing optical port part.
Description
Technical field
The utility model relates to technical field of photo communication, specifically, being related to a kind of solution EMC and EMI electromagnetic compatibility light
Module.
Background technique
The optical port part of existing optical module and optical module casing part are all by the way of upper and lower covers fastening come fixator
Part and shell.The fixation of this frame mode causes optical port direction must after the combination of the upper and lower covers of optical port part and casing part
So there are gap (see Fig. 1 and Fig. 2).In particular with the extensive application of 10G&28G frequency, the size in gap have been above 1/
10 λ electric waves are long, and leakage herein is inevitable.Such optical module is unable to satisfy EMI electromagnetic radiation requirement, can there is EMI electricity
The leakage of magnetic wave is unable to satisfy the requirement of optical module EMC&EMI electromagnetic compatibility.
The mode that this shell upper and lower covers combine, if it is desired to solve the problems, such as EMI electromagnetic radiation, it can only following two aspect
Set about: a. can only be handled using silver paste, be applied to the upper and lower covers junction of optical port part and casing part, realized the close of gap
In conjunction with；B. increase tinfoil paper material inside module housing, need to stick tinfoil paper material to absorb part electromagnetic wave, to reduce EMI electricity
Magnetic radiation problem.It realizes that project plan comparison is difficult above, and the testing standard of EMC&EMI electromagnetic compatibility can not be fully met.
Even if the shell for solving the problems, such as gap using above-mentioned means, but being sealed is unfavorable for dismantling.Shell is multiple
Disassembly assembling after, upper and lower covers smear silver paste can be driven plain or disassembly process in silver paste can be touched down, make upper and lower covers junction
Occur the problem of gap again, and leads to the leakage problem of EMI electromagnetic wave.
Utility model content
The purpose of this utility model is to provide a kind of solution EMC and EMI electromagnetic compatibility optical module, effectively reduce optical port
Partial electromagnetic-wave leakage.
Technical solution used by a kind of solution EMC and EMI electromagnetic compatibility optical module disclosed by the utility model is:
A kind of solution EMC and EMI electromagnetic compatibility optical module, including lower case and electro-magnetic wave absorption part, the lower case one
End is equipped with optical port, the optical port and lower casing body by integral forming, and the optical port is opened up there are two through-hole, and described two through-holes are used respectively
In passing through for optical transmitting set and optical receiver, the electro-magnetic wave absorption part offers via hole corresponding with through-hole, the electromagnetic wave
Absorbing component pushes against the surface of optical port, and via hole is corresponding with through-hole, and the optical transmitting set and optical receiver sequentially pass through electromagnetic wave suction
The through-hole of the via hole of addressee, optical port.
Preferably, the height of the middle section of described lower case or so side is lower than the height at side both ends.
Preferably, the height of the middle section of one of side and close optical port part is lower than middle part
The height divided.
Preferably, the lower case is equipped with strip groove far from one end of optical port.
Preferably, the electro-magnetic wave absorption part is conducting foam.
Preferably, the lower case offers accommodating chamber, and the accommodating chamber bottom offers heat dissipation groove, described
Heat dissipation groove is for placing optical transmitting set and optical receiver.
Preferably, including upper shell cover, the upper shell cover width are slightly less than lower case width, the upper shell cover dislocation
Lower case is encased, the upper shell cover, which squeezes lower case, seals lower case two sides.
Preferably, the lateral surface of the lower case side offers card slot, the medial surface of the upper shell cover side
Equipped with protrusion, the protrusion is connected in card slot.
Preferably, the upper shell cover is equipped with metal clips close to the end of optical port.
Preferably, including screening cover, the screening cover is fixed on the bottom that lower case is equipped with optical port one end, described
Screening cover is equipped with metal clips close to the end of optical port.
A kind of beneficial effect solving EMC and EMI electromagnetic compatibility optical module disclosed by the utility model is: optical port part one
It is body formed, the gap that optical port part is generated by upper and lower covers linking is eliminated, the leakage of electromagnetic wave is reduced.Electro-magnetic wave absorption part
The connection gap between optical port and optical device is then blocked, and electro-magnetic wave absorption part can absorb the electromagnetism given off from optical port
Wave.It thus can effectively reduce the electromagnetic-wave leakage of optical port part.
Detailed description of the invention
Fig. 1 is the upper cover and lower cover structure chart of existing optical module.
Fig. 2 is the closing lid schematic diagram of the upper cover and lower cover of existing optical module.
Fig. 3 is a kind of explosive view for solving EMC and EMI electromagnetic compatibility optical module of the utility model.
Fig. 4 is the enlarged drawing of A in Fig. 3.
Specific embodiment
The utility model is further elaborated and is illustrated with Figure of description combined with specific embodiments below:
Please refer to Fig. 3 and Fig. 4, a kind of solution EMC and EMI electromagnetic compatibility optical module include lower case 10, electro-magnetic wave absorption
Part 20, screening cover 30 and upper shell cover 40.
Lower case 10 offers cavity 11.10 one end of lower case is equipped with optical port 12, and optical port 12 is opened up there are two through-hole 122.
Lower case 10 and optical port 12 are integrally formed, and are eliminated the gap that optical port part is generated by upper and lower covers linking, are reduced electromagnetic wave
Leakage.
Electro-magnetic wave absorption part 20 offers via hole corresponding with through-hole 122, and electro-magnetic wave absorption part 20 pushes against through-hole 122, light
Transmitter and optical receiver sequentially pass through the through-hole 122 of the via hole of electro-magnetic wave absorption part 20, optical port.Wherein, electro-magnetic wave absorption part
20 be conducting foam, has elasticity.On the one hand conducting foam blocks the connection gap between through-hole and optical device；Another aspect because
Its electric conductivity, so the electromagnetic wave given off from through-hole can be absorbed.It thus can effectively prevent the electromagnetism of throughhole portions
Wave leakage.Conducting foam has elasticity, after being squeezed by optical transmitting set and optical receiver, fixed briquetting is on the one hand cooperated to facilitate
On the other hand the fixation of optical transmitting set and optical receiver enhances the effect of sealing through-hole.
The height of the middle section 14 of 10 or so side of lower case is lower than the height at side both ends, 14 conduct of middle section
Sink structures.The middle section 14 of one of side and the height for being lower than middle section 14 close to the height of optical port part 16
Degree is used as secondary sink structures close to optical port part 16.Because the size of lower case is fixed, it is necessary to meet Protocol Standard
Standard, result in this way the wiring space of pcb board it is very narrow (guarantee lower case certain thickness in the case of, Limit Width
12.4mm).And it can then increase the width (12.6mm) of pcb board using a sink structures and secondary sink structures.Lower case
Side once sinks with after secondary sinking, and pcb board is placed in the top of side, so that part and side weight that pcb board is broadening
It closes.It not only ensure that the thickness of lower case in this way, but also the width of pcb board can be widened.
10 cavity of lower case, 11 bottom offers heat dissipation groove 15.Heat dissipation groove 15 is for placing optical transmitting set and light-receiving
Device is conducive to the heat dissipation of optical transmitting set and optical receiver.
Lower case 10 is equipped with multiple strip grooves 18 far from one end of optical port 12.Strip groove fluting direction and lower case are wide
Degree direction is consistent, and when having electromagnetic wave to pass through, strip groove can weaken the radiation of electromagnetic wave, improve the anti-electricity of optical module
Magnetic disturbance ability.
The lateral surface of 10 side of lower case offers card slot 13.Card slot is used to cooperate the protrusion on upper shell cover, improves upper casing
The compactness that lid and lower case are fixed.
Upper shell cover 40 is Metal plate, and upper shell cover 40 is in U-typed, and two sides have elasticity well.40 width of upper shell cover
It is slightly less than 10 width of lower case, the medial surface of 40 side of upper shell cover is equipped with protrusion, and upper shell cover 40 encases lower casing in a manner of dislocation
Body 10.Due to the high resiliency of metal plate upper shell cover, upper shell cover will squeeze lower case, so that upper shell cover and lower case closed seamless is viscous
It sticks together.Radiate the electromagnetic radiation inside optical module can not at left and right sides of optical module.Using in this way
Fixed form, upper shell cover can repeatedly dismantle assembling, and will not lead to the problem of electromagnetic-wave leakage.Why can use upper
The mode of cap and lower case dislocation is because lower case has done primary and secondary sink structures.Pcb board is higher than lower case two sides
The height on side, when then upper shell cover squeezes the side of lower case, the side of lower case will not touch pcb board, would not influence
To the normal work of pcb board.It and using secondary sink structures is designed as insurance.
Upper shell cover 40 is equipped with metal clips 42 close to the end of optical port.Metal clips 42 can be very good to absorb electromagnetism
Wave improves the anti-electromagnetic interference capability of optical module.
Screening cover 30 is in U-typed.Screening cover 30 is fixed on the bottom that lower case 10 is equipped with 12 one end of optical port, and screening cover 30 leans on
The end of dipped beam mouth is equipped with metal clips 32.Metal clips 32 can be very good electromagnetic wave absorption, and screening cover 30 is for enhancing
The anti-electromagnetic interference capability of optical module.
One of the technical program solve EMC and EMI electromagnetic compatibility optical module be suitable for three series (SFP/SFP+/
) and corresponding three kinds of rates (1Gb/s, 10Gb/s, 25Gb/s) SFP28.Wherein optical transmitting set is laser, and optical receiver is to visit
Survey device.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than to this reality
With the limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, this field it is general
Lead to it will be appreciated by the skilled person that can be with the technical solution of the present invention is modified or equivalently replaced, without departing from this
The spirit and scope of utility model technical solution.
Claims (10)
1. a kind of solution EMC and EMI electromagnetic compatibility optical module, which is characterized in that described including lower case and electro-magnetic wave absorption part
Lower case one end is equipped with optical port, the optical port and lower casing body by integral forming, and the optical port opens up that there are two through-holes, described two logical
Hole is respectively used to passing through for optical transmitting set and optical receiver, and the electro-magnetic wave absorption part offers via hole corresponding with through-hole, institute
The surface that electro-magnetic wave absorption part pushes against optical port is stated, and via hole is corresponding with through-hole, the optical transmitting set and optical receiver sequentially pass through
The through-hole of the via hole of electro-magnetic wave absorption part, optical port.
2. a kind of solution EMC as described in claim 1 and EMI electromagnetic compatibility optical module, which is characterized in that the lower case is left
The height of the middle section of right edge is lower than the height at side both ends.
3. a kind of solution EMC as claimed in claim 2 and EMI electromagnetic compatibility optical module, which is characterized in that it is described one of them
The middle section of side and the height for being lower than middle section close to the height of optical port part.
4. a kind of solution EMC as described in claim 1 and EMI electromagnetic compatibility optical module, which is characterized in that the lower case is remote
One end from optical port is equipped with strip groove.
5. a kind of solution EMC as described in claim 1 and EMI electromagnetic compatibility optical module, which is characterized in that the electromagnetic wave is inhaled
Addressee is conducting foam.
6. a kind of solution EMC as described in claim 1 and EMI electromagnetic compatibility optical module, which is characterized in that the lower case is opened
Equipped with accommodating chamber, the accommodating chamber bottom offers heat dissipation groove, and the heat dissipation groove is for placing optical transmitting set and light-receiving
Device.
7. a kind of solution EMC and EMI electromagnetic compatibility optical module as described in Claims 2 or 3 any one, which is characterized in that
Including upper shell cover, the upper shell cover width is slightly less than lower case width, and the upper shell cover dislocation encases lower case, the upper shell cover
Squeezing lower case seals lower case two sides.
8. a kind of solution EMC as claimed in claim 7 and EMI electromagnetic compatibility optical module, which is characterized in that the lower casing side
The lateral surface on side offers card slot, and the medial surface of the upper shell cover side is equipped with protrusion, and the protrusion is connected in card slot.
9. a kind of solution EMC as claimed in claim 7 and EMI electromagnetic compatibility optical module, which is characterized in that the upper shell cover leans on
The end of dipped beam mouth is equipped with metal clips.
10. a kind of solution EMC as claimed in claim 7 and EMI electromagnetic compatibility optical module, which is characterized in that including screening cover,
The screening cover is fixed on the bottom that lower case is equipped with optical port one end, and the screening cover is equipped with metal elastic close to the end of optical port
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822020621.2U CN209281013U (en) | 2018-12-04 | 2018-12-04 | A kind of solution EMC and EMI electromagnetic compatibility optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822020621.2U CN209281013U (en) | 2018-12-04 | 2018-12-04 | A kind of solution EMC and EMI electromagnetic compatibility optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209281013U true CN209281013U (en) | 2019-08-20 |
Family
ID=67609497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822020621.2U Active CN209281013U (en) | 2018-12-04 | 2018-12-04 | A kind of solution EMC and EMI electromagnetic compatibility optical module |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221086A (en) * | 2020-03-02 | 2020-06-02 | 苏州密科唯电子科技有限公司 | Optical module shell assembly, manufacturing method and optical module with shell assembly |
| WO2021134595A1 (en) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Optical port shielding and fixing apparatus, optical module and communication device |
| CN113341508A (en) * | 2021-05-14 | 2021-09-03 | 武汉光迅科技股份有限公司 | Optical port assembly and optical module |
| WO2022037226A1 (en) * | 2020-08-18 | 2022-02-24 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| WO2022052920A1 (en) * | 2020-09-08 | 2022-03-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN114265153A (en) * | 2021-12-01 | 2022-04-01 | 长飞光纤光缆股份有限公司 | LC optical module |
-
2018
- 2018-12-04 CN CN201822020621.2U patent/CN209281013U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021134595A1 (en) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Optical port shielding and fixing apparatus, optical module and communication device |
| CN114731774A (en) * | 2019-12-31 | 2022-07-08 | 华为技术有限公司 | Optical port shielding and fixing device, optical module and communication equipment |
| EP4072257A4 (en) * | 2019-12-31 | 2022-12-28 | Huawei Technologies Co., Ltd. | Optical port shielding and fixing apparatus, optical module and communication device |
| US11747580B2 (en) | 2019-12-31 | 2023-09-05 | Huawei Technologies Co., Ltd. | Optical port shielding and fastening apparatus, optical module, and communications device |
| CN111221086A (en) * | 2020-03-02 | 2020-06-02 | 苏州密科唯电子科技有限公司 | Optical module shell assembly, manufacturing method and optical module with shell assembly |
| WO2022037226A1 (en) * | 2020-08-18 | 2022-02-24 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| WO2022052920A1 (en) * | 2020-09-08 | 2022-03-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN113341508A (en) * | 2021-05-14 | 2021-09-03 | 武汉光迅科技股份有限公司 | Optical port assembly and optical module |
| CN113341508B (en) * | 2021-05-14 | 2022-07-12 | 武汉光迅科技股份有限公司 | Optical port assembly and optical module |
| CN114265153A (en) * | 2021-12-01 | 2022-04-01 | 长飞光纤光缆股份有限公司 | LC optical module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231231 Address after: 518000, 4th Floor, Building 2-5, Tongfu Industrial Zone, Aiqun Road, Shangwu Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Huaxun Guangtong Technology Co.,Ltd. Address before: 518000, Building 1, Building 401A, Runxingfa Industrial Park, No. 19 Tianbao Road, Yingrenshi Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HUAXUN GUANGTONG TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |