CN220235328U - Electromagnetic shielding device of optical power meter - Google Patents
Electromagnetic shielding device of optical power meter Download PDFInfo
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- CN220235328U CN220235328U CN202321897526.5U CN202321897526U CN220235328U CN 220235328 U CN220235328 U CN 220235328U CN 202321897526 U CN202321897526 U CN 202321897526U CN 220235328 U CN220235328 U CN 220235328U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides an electromagnetic shielding device of an optical power meter, which comprises a shell and a shielding mechanism, wherein the shielding mechanism comprises an access cover, screws, fixing lugs, a metal reflecting layer, an electromagnetic wave absorbing layer, an electric wire magnetic filtering block, a connecting wire, a plug, an earth wire plug and an interface magnetic filtering block. The utility model provides an electromagnetic shielding device of an optical power meter, wherein a screen is arranged on the left side in front of a shell, a key is arranged on the right side of the screen, an interface is arranged on the right side of the key, a switch is arranged on the right side of the interface, shielding mechanisms are arranged on the rear side and the inside of the shell, a rotating screw is used for separating the shell from an access cover, whether defects occur in a metal reflecting layer and an electromagnetic wave absorbing layer or not is checked, then a plug with a ground wire plug is connected with a power supply, electromagnetic waves leave along a connecting wire along the ground wire, the key of the switch in the operation shielding mechanism is started, the interface is connected with external equipment, and finally accurate data are obtained, so that the use process of the electromagnetic shielding device of the optical power meter is completed.
Description
Technical Field
The utility model relates to the technical field related to electromagnetic shielding, in particular to an electromagnetic shielding device of an optical power meter.
Background
At present, in the research and development and production of optical communication, the measurement of optical power is a very important link, and the measurement of optical power runs through the whole process of component level, module level, product level and system level of the industry, so that the measurement of an optical power meter with stability, reliability, high sensitivity and simple operation is very important.
Through searching, the patent with the bulletin number of CN218302079U discloses an electromagnetic shielding device of a high-density optical power meter, and the utility model provides an electromagnetic shielding device of the high-density optical power meter, belonging to the technical field of electromagnetic shielding. The utility model comprises an upper cover, a wing plate component and a bottom cover which are connected in sequence in a detachable way, wherein the wing plate component comprises a plurality of independent rectangular wing plates, wing edges are symmetrically arranged on the side edges of the wing plates, a wing groove matched with the wing edges is arranged on the bottom cover, the wing edges can be connected with the wing groove in a clamping way, the upper cover and the bottom cover are connected in a detachable way and form a closed cavity together with the wing edges, and the wing plates are integrated with an analog circuit of an optical power meter. The beneficial effects of the utility model are as follows: on the basis of the shielding of the chassis, the interference signals in the chassis are further shielded, the influence of digital noise is further reduced through the physical separation of the analog circuit and the digital circuit, and the high stability and linearity are still shown when the signal of-100 dBm is measured. Although the arrangement can reduce digital noise, the sealing performance is poor, the electromagnetic shielding mode is too single, the shielding is incomplete, and the detection result is easy to deviate.
In view of the above, intensive studies have been conducted to solve the above problems.
Disclosure of Invention
The utility model aims to provide an electromagnetic shielding device of an optical power meter, which solves the problems that the sealing performance is poor, the electromagnetic shielding mode is too single, the shielding is incomplete, and the deviation of a detection result is easy to occur in the background technology.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an electromagnetic shield device of optical power meter, includes shell and shielding mechanism, the place ahead left side of shell is provided with the screen, the screen right side is provided with the button, the button right side is provided with the interface, the interface right side is provided with the switch, shell rear side and inside are provided with shielding mechanism, the shell rear side is provided with the access cover, the shell inside is provided with the metal reflection stratum, the metal reflection stratum inboard is provided with the electromagnetic wave absorbed layer, the electromagnetic wave absorbed layer front side is provided with the interface and strains the magnetic path.
Preferably, the shell rear side is provided with the access cover, the access cover four corners is provided with the screw, the inside four corners of shell is provided with the fixed ear, the inside metal reflection stratum that is provided with of shell, the metal reflection stratum inboard is provided with electromagnetic wave absorbing layer, electromagnetic wave absorbing layer one side is provided with the electric wire and strains the magnetic path, the electric wire is strained the magnetic path outside and is provided with the connecting wire, the connecting wire other end is provided with the plug, the plug outside is provided with the ground wire and inserts, electromagnetic wave absorbing layer front side is provided with the interface and strains the magnetic path.
Preferably, the shell is connected with the access cover through screws, and the shell is matched with the access cover in size.
Preferably, the screws are in threaded connection with the fixing lugs, and the screws correspond to the fixing lugs one by one.
Preferably, the shell is connected with the metal reflecting layer through a clamping groove, and the inner diameter of the shell is matched with the inner diameter of the metal reflecting layer.
Preferably, the metal reflecting layer is in adhesive connection with the electromagnetic wave absorbing layer, and the metal reflecting layer is closely attached to the electromagnetic wave absorbing layer.
Preferably, the plug is connected with the ground wire plug through a clamping groove, and the plug is provided with three wire plugs in total, wherein the ground wire plug is arranged at the uppermost part and is in a vertical direction.
The utility model has the following beneficial effects:
1. the utility model provides an electromagnetic shielding device of an optical power meter, which is characterized in that through the arrangement of a shell, an access cover, a screw, a metal reflecting layer, an electromagnetic wave absorbing layer, a connecting wire, a plug and a ground wire plug, the shell is separated from the access cover by rotating the screw, whether the metal reflecting layer and the electromagnetic wave absorbing layer are defective or not is checked, and timely repair is performed, and then the plug with the ground wire plug is connected with a power supply, so that electromagnetic waves leave along the connecting wire and the ground wire.
2. Through setting up of screen, button, interface, switch, shielding mechanism and interface magnetic filter block, open the switch and make equipment start work, operate the button in the shielding mechanism, the interface is inside to be provided with the interface magnetic filter block, external connection equipment, observe the screen at last and obtain accurate data, just so accomplished the use of the electromagnetic shield device of an optical power meter.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an electromagnetic shielding device of an optical power meter according to the present utility model;
FIG. 2 is a schematic diagram of a rear view of an electromagnetic shielding device of an optical power meter according to the present utility model;
FIG. 3 is a schematic view of the internal structure of an electromagnetic shielding device of an optical power meter according to the present utility model;
fig. 4 is a schematic view of a partial structure of an electromagnetic shielding device of an optical power meter according to the present utility model.
Reference numerals in the drawings: 1. a housing; 2. a screen; 3. a key; 4. an interface; 5. a switch; 6. a shielding mechanism; 601. an access cover; 602. a screw; 603. a fixed ear; 604. a metal reflective layer; 605. an electromagnetic wave absorption layer; 606. an electric wire magnetic filtering block; 607. a connecting wire; 608. a plug; 609. ground wire insertion; 610. the interface filters the magnetic block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, an electromagnetic shielding device of an optical power meter comprises a housing 1 and a shielding mechanism 6, wherein a screen 2 is arranged on the left side in front of the housing 1, a key 3 is arranged on the right side of the screen 2, an interface 4 is arranged on the right side of the key 3, a switch 5 is arranged on the right side of the interface 4, the shielding mechanism 6 is arranged on the rear side and the inside of the housing 1, an access cover 601 is arranged on the rear side of the housing 1, a metal reflecting layer 604 is arranged inside the housing 1, an electromagnetic wave absorbing layer 605 is arranged on the inner side of the metal reflecting layer 604, and an interface magnetic filtering block 610 is arranged on the front side of the electromagnetic wave absorbing layer 605.
Further, the rear side of the shell 1 is provided with an access cover 601, four corners of the access cover 601 are provided with screws 602, four corners of the inside of the shell 1 are provided with fixed lugs 603, the inside of the shell 1 is provided with a metal reflecting layer 604, the inside of the metal reflecting layer 604 is provided with an electromagnetic wave absorbing layer 605, one side of the electromagnetic wave absorbing layer 605 is provided with an electric wire magnetic filtering block 606, the outer side of the electric wire magnetic filtering block 606 is provided with a connecting wire 607, the other end of the connecting wire 607 is provided with a plug 608, the outer part of the plug 608 is provided with a ground wire plug 609, the front side of the electromagnetic wave absorbing layer 605 is provided with an interface magnetic filtering block 610, and the electromagnetic wave absorbing layer is protected in multiple layers so as to achieve better shielding effect.
Further, be the screw connection between shell 1 and the access cover 601, shell 1 and access cover 601 size phase-match avoid appearing the gap, improve shielding efficiency.
Further, the screws 602 are in threaded connection with the fixing lugs 603, and the screws 602 are in one-to-one correspondence with the fixing lugs 603, so that the screws 602 and the fixing lugs 603 are more tightly connected.
Further, the shell 1 is connected with the metal reflecting layer 604 by a clamping groove, and the inner diameter of the shell 1 is matched with the inner diameter of the metal reflecting layer 604 in size, so that the first layer of shielding effect is achieved.
Further, the metal reflecting layer 604 and the electromagnetic wave absorbing layer 605 are in adhesive connection, the metal reflecting layer 604 is closely attached to the electromagnetic wave absorbing layer 605, and the second layer is shielded, so that the shielding is more thorough.
Further, the plug 608 is connected to the ground wire plug 609 by a clamping groove, and the plug 608 is provided with three wire plugs, wherein the ground wire plug 609 is at the uppermost part and is in a vertical direction, so that the shielded electromagnetic wave leaves along the ground wire.
Working principle: in the electromagnetic shielding device of the optical power meter, firstly, a screw 602 is rotated to be separated from a fixed lug 603, thereby separating a shell 1 from an access cover 601, checking whether a defect appears on a metal reflecting layer 604 and an electromagnetic wave absorbing layer 605 and repairing the defect in time, then, a plug 608 with a ground wire plug 609 is connected with a power supply, electromagnetic waves leave along a ground wire along a connecting wire 607, a wire magnetic filter block 606 further perfects a shielding function, a switch 5 is started to enable equipment to start working, a key 3 in a shielding mechanism 6 is operated, an interface magnetic filter block 610 is arranged in an interface 4, equipment is externally connected, and finally, accurate data is obtained by observing a screen 2, so that the use process of the electromagnetic shielding device of the optical power meter is completed.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. An electromagnetic shielding device of an optical power meter, comprising a housing (1) and a shielding mechanism (6), characterized in that: the novel electromagnetic wave shielding device is characterized in that a screen (2) is arranged on the left side in front of the housing (1), a key (3) is arranged on the right side of the screen (2), an interface (4) is arranged on the right side of the key (3), a switch (5) is arranged on the right side of the interface (4), a shielding mechanism (6) is arranged on the rear side and the inside of the housing (1), an access cover (601) is arranged on the rear side of the housing (1), a metal reflecting layer (604) is arranged inside the housing (1), an electromagnetic wave absorbing layer (605) is arranged on the inner side of the metal reflecting layer (604), and an interface magnetic filtering block (610) is arranged on the front side of the electromagnetic wave absorbing layer (605).
2. The electromagnetic shielding device of an optical power meter according to claim 1, wherein an access cover (601) is arranged on the rear side of the housing (1), screws (602) are arranged at four corners of the access cover (601), fixing lugs (603) are arranged at four corners of the interior of the housing (1), a metal reflecting layer (604) is arranged inside the housing (1), an electromagnetic wave absorbing layer (605) is arranged on the inner side of the metal reflecting layer (604), an electric wire magnetic filtering block (606) is arranged on one side of the electromagnetic wave absorbing layer (605), a connecting wire (607) is arranged on the outer side of the electric wire magnetic filtering block (606), a plug (608) is arranged at the other end of the connecting wire (607), a ground wire plug (609) is arranged on the outer side of the plug (608), and an interface magnetic filtering block (610) is arranged on the front side of the electromagnetic wave absorbing layer (605).
3. An electromagnetic shielding device of an optical power meter according to claim 2, characterized in that the housing (1) is screw-connected to the access cover (601), the housing (1) being size-matched to the access cover (601).
4. The electromagnetic shielding device of an optical power meter according to claim 2, wherein the screw (602) is in threaded connection with the fixing lug (603), and the screw (602) is in one-to-one correspondence with the fixing lug (603).
5. An electromagnetic shielding device of an optical power meter according to claim 2, wherein the housing (1) is connected with the metal reflecting layer (604) by a clamping groove, and the inner diameter of the housing (1) is matched with the inner diameter of the metal reflecting layer (604).
6. The electromagnetic shielding device of an optical power meter according to claim 2, wherein the metal reflecting layer (604) and the electromagnetic wave absorbing layer (605) are in adhesive connection, and the metal reflecting layer (604) and the electromagnetic wave absorbing layer (605) are closely attached.
7. An electromagnetic shielding device of an optical power meter according to claim 2, wherein the plug (608) is connected with the ground wire plug (609) by a clamping groove, and the plug (608) is provided with three wire plugs in total, wherein the ground wire plug (609) is at the uppermost part and is in a vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897526.5U CN220235328U (en) | 2023-07-19 | 2023-07-19 | Electromagnetic shielding device of optical power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897526.5U CN220235328U (en) | 2023-07-19 | 2023-07-19 | Electromagnetic shielding device of optical power meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220235328U true CN220235328U (en) | 2023-12-22 |
Family
ID=89175814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321897526.5U Active CN220235328U (en) | 2023-07-19 | 2023-07-19 | Electromagnetic shielding device of optical power meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220235328U (en) |
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2023
- 2023-07-19 CN CN202321897526.5U patent/CN220235328U/en active Active
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