CN218037454U

CN218037454U - Optical module

Info

Publication number: CN218037454U
Application number: CN202222210758.0U
Authority: CN
Inventors: 陈金磊; 徐发部; 司宝峰; 潘红超
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2022-12-13
Anticipated expiration: 2032-08-22
Also published as: WO2024040967A1

Abstract

The application discloses an optical module, which comprises a shell. The upper shell is provided with a first groove. The lower shell is provided with a second groove. The shell is provided with a third groove. The first groove is used for placing the first elastic conductive piece. The second groove is used for placing a second elastic conductive piece. And the third groove is communicated with the first groove or the second groove and is used for placing the conductive adhesive tape. The first elastic conductive piece is connected with the second elastic conductive piece through a fiber array. The width dimension of the first groove communicated with the third groove is smaller than that of the second groove, or the width dimension of the second groove communicated with the third groove is smaller than that of the first groove. In this application, the width dimension of the first recess with the third recess intercommunication is less than the width dimension of second recess, perhaps the width dimension of the second recess with the third recess intercommunication is less than the width dimension of first recess for go up the casing and fully contact between the casing down, effectively reduce electromagnetic radiation.

Description

Optical module

Technical Field

The application relates to the technical field of communication, in particular to an optical module.

Background

With the rapid development of data centers and supercomputers, optical modules also tend to have the characteristics of high integration and high speed. With the continuous improvement of the integration and speed of the optical module, the EMI (electromagnetic Interference) of the optical module is easily caused to exceed the standard.

In order to solve the problem of exceeding EMI standard, the existing method is to use wave-absorbing material or conductive gasket to clamp the optical fiber on the optical fiber path inside the optical module. Because the wave-absorbing material or the conductive gasket is made of harder materials, the optical fiber is easy to be damaged in practical application, a larger leakage path still can be left, and the electromagnetic radiation can not be well reduced.

SUMMERY OF THE UTILITY MODEL

The application provides an optical module, which reduces electromagnetic radiation.

A light module, comprising:

an upper housing provided with a first groove;

the lower shell and the upper shell enclose a city shell, and a second groove is formed in the lower shell;

the shell is provided with a third groove;

the first groove is used for placing the first elastic conductive piece;

the second groove is used for placing a second elastic conductive piece;

the third groove is communicated with the first groove or the second groove and is used for placing a conductive adhesive tape;

the first elastic conductive piece is connected with the second elastic conductive piece, and an optical fiber array is arranged at the joint of the first elastic conductive piece and the second elastic conductive piece, so that the first elastic conductive piece and the second elastic conductive piece are seamlessly connected with the optical fiber array;

the width dimension of the first groove communicated with the third groove is smaller than that of the second groove, and the width dimension of the first elastic conductive piece is smaller than that of the second elastic conductive piece, so that the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape;

or,

the width dimension of the second groove communicated with the third groove is smaller than that of the first groove, and the width dimension of the second elastic conductive piece is smaller than that of the first elastic conductive piece, so that the lower surface of the first elastic conductive piece is connected with the conductive adhesive tape.

Has the advantages that: the application provides an optical module, which comprises an upper shell and a lower shell. The upper shell is provided with a first groove. The lower shell and the upper shell enclose a city shell. The lower shell is provided with a second groove. The housing is provided with a third groove. The first groove is used for placing the first elastic conductive piece. The first elastic conductive piece is in seamless connection with the first groove, so that the first elastic conductive piece is in full contact with the upper shell. The second groove is used for placing a second elastic conductive piece. The second elastic conductive piece is in seamless connection with the second groove, so that the second elastic conductive piece is in full contact with the lower shell. The first elastic conductive piece is connected with the second elastic conductive piece, and the optical fiber array is arranged at the joint of the first elastic conductive piece and the second elastic conductive piece, so that the first elastic conductive piece and the second elastic conductive piece are in seamless connection with the optical fiber array. Because the first elastic conductive piece and the second elastic conductive piece both have elasticity, when the first elastic conductive piece and the second elastic conductive piece are connected in an extruding way, the first elastic conductive piece and the second elastic conductive piece are connected without a gap, so that the first elastic conductive piece and the second elastic conductive piece are fully contacted. When the optical fiber array is arranged at the joint of the first elastic conductive piece and the second elastic conductive piece, the first elastic conductive piece and the second elastic conductive piece are in seamless connection with the optical fiber array, so that the first elastic conductive piece and the second elastic conductive piece are in full contact with the optical fiber array. And the third groove is communicated with the first groove or the second groove and is used for placing the conductive adhesive tape. The conducting adhesive tape can make the upper shell and the lower shell fully contact except for the first groove and the second groove. The third grooves may be located on both sides of the first grooves, or on both sides of the second grooves. When the third grooves are positioned on two sides of the first groove, the width dimension of the first groove is smaller than that of the second groove, the width dimension of the first elastic conductive piece is smaller than that of the second elastic conductive piece, and the lower surface of the first elastic conductive piece is connected with the conductive adhesive tape; when the third groove is positioned on two sides of the second groove, the width dimension of the second groove communicated with the third groove is smaller than that of the first groove, the width dimension of the second elastic conductive piece is smaller than that of the first elastic conductive piece, and the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape. The lower surface of the first elastic conductive piece or the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape, so that the upper shell is fully contacted with the lower shell, a closed cavity is formed, the electromagnetic radiation is effectively reduced, and the electromagnetic shielding effect is achieved. In the application, the conductive adhesive tape in the third groove enables the upper shell to be in full contact with the lower shell in the region except the first groove and the second groove, the first elastic conductive piece in the first groove and the second elastic conductive piece in the second groove are arranged in the joint of the first elastic conductive piece and the second elastic conductive piece, the width size of the first groove communicated with the third groove is smaller than that of the second groove, the width size of the first elastic conductive piece is smaller than that of the second elastic conductive piece, so that the lower surface of the first elastic conductive piece is connected with the conductive adhesive tape, or the width size of the second groove communicated with the third groove is smaller than that of the first groove, the width size of the second elastic conductive piece is smaller than that of the first elastic conductive piece, so that the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape, further the upper shell is in full contact with the lower shell, further the upper shell, the first elastic conductive piece, the second elastic conductive piece, the conductive adhesive tape and the lower shell form a closed cavity, and electromagnetic radiation is effectively reduced, thereby playing a role of electromagnetic shielding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a connection diagram of an optical communication system;

FIG. 2 is a block diagram of an optical network terminal;

FIG. 3 is a block diagram of a light module according to some embodiments;

FIG. 4 is an exploded block diagram of a light module according to some embodiments;

FIG. 5 is a cross-sectional view of a light module according to some embodiments;

FIG. 6 is another cross-sectional view of a light module according to some embodiments;

FIG. 7 is a block diagram of a light module with an upper housing removed according to some embodiments;

fig. 8 is a block diagram of the upper housing and first conductive member removed according to some embodiments;

FIG. 9 is a block diagram of an optical module with upper and lower housings removed according to some embodiments;

FIG. 10 is a first block diagram of a first conductive element, a second conductive element, a conductive strip, and a fiber optic ribbon according to some embodiments;

fig. 11 is a second block diagram of a first conductive element, a second conductive element, a conductive strip, and a fiber optic ribbon according to some embodiments;

FIG. 12 is a third block diagram of a first conductive component, a second conductive component, a conductive strip, and a fiber optic ribbon according to some embodiments;

fig. 13 is a block diagram of a first conductive member, a second conductive member, and a conductive strip in accordance with some embodiments;

fig. 14 is a block diagram of a second conductive member and conductive strip in accordance with some embodiments;

FIG. 15 is a block diagram of a lower housing according to some embodiments;

FIG. 16 is a block diagram of an upper housing according to some embodiments;

FIG. 17 is another block diagram of an upper housing according to some embodiments.

Detailed Description

In an optical communication system, an optical signal is used to carry information to be transmitted, and the optical signal carrying the information is transmitted to information processing equipment such as a computer through information transmission equipment such as an optical fiber or an optical waveguide, so as to complete information transmission. Since light has a passive transmission characteristic when transmitted through an optical fiber or an optical waveguide, low-cost and low-loss information transmission can be realized. Further, since a signal transmitted by an information transmission device such as an optical fiber or an optical waveguide is an optical signal and a signal that can be recognized and processed by an information processing device such as a computer is an electrical signal, it is necessary to perform interconversion between the electrical signal and the optical signal in order to establish an information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer.

The optical module realizes the function of interconversion between the optical signal and the electrical signal in the technical field of optical communication. The optical module comprises an optical port and an electric port, the optical module realizes optical communication with information transmission equipment such as optical fibers or optical waveguides and the like through the optical port, realizes electric connection with an optical network terminal (such as an optical modem) through the electric port, and the electric connection is mainly used for power supply, I2C signal transmission, data information transmission, grounding and the like; the optical network terminal transmits the electric signal to the computer and other information processing equipment through a network cable or a wireless fidelity (Wi-Fi).

Fig. 1 is a connection diagram of an optical communication system. As shown in fig. 1, the optical communication system includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103.

One end of the optical fiber 101 is connected to the remote server 1000, and the other end is connected to the optical network terminal 100 through the optical module 200. The optical fiber itself can support long-distance signal transmission, for example, signal transmission of thousands of meters (6 km to 8 km), on the basis of which if a repeater is used, theoretically infinite distance transmission can be realized. Therefore, in a typical optical communication system, the distance between the remote server 1000 and the onu 100 may be several kilometers, tens of kilometers, or hundreds of kilometers.

One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing apparatus 2000 may be any one or several of the following apparatuses: router, switch, computer, cell-phone, panel computer, TV set etc..

The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing apparatus 2000 and the optical network terminal 100. The connection between the local information processing apparatus 2000 and the remote server 1000 is made by the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical module 200 and the optical network terminal 100.

The optical module 200 includes an optical port configured to access the optical fiber 101 and an electrical port, so that the optical module 200 establishes a bidirectional optical signal connection with the optical fiber 101; the electrical port is configured to be accessed into the optical network terminal 100, so that the optical module 200 establishes a bidirectional electrical signal connection with the optical network terminal 100. The optical module 200 converts an optical signal and an electrical signal to each other, so that an information connection is established between the optical fiber 101 and the optical network terminal 100. For example, an optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 and then input to the optical network terminal 100, and an electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module 200 and input to the optical fiber 101. Since the optical module 200 is a tool for implementing the interconversion between the optical signal and the electrical signal, and has no function of processing data, information is not changed in the above-mentioned photoelectric conversion process.

The optical network terminal 100 includes a housing (housing) having a substantially rectangular parallelepiped shape, and an optical module interface 102 and a network cable interface 104 provided on the housing. The optical module interface 102 is configured to access the optical module 200, so that the optical network terminal 100 establishes a bidirectional electrical signal connection with the optical module 200; the network cable interface 104 is configured to access the network cable 103 such that the optical network terminal 100 establishes a bi-directional electrical signal connection with the network cable 103. The optical module 200 is connected to the network cable 103 via the optical network terminal 100. For example, the onu 100 transmits the electrical signal from the optical module 200 to the network cable 103, and transmits the electrical signal from the network cable 103 to the optical module 200, so that the onu 100 can monitor the operation of the optical module 200 as an upper computer of the optical module 200. The upper computer of the Optical module 200 may include an Optical Line Terminal (OLT) and the like in addition to the Optical network Terminal 100.

The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing device 2000 through the optical fiber 101, the optical module 200, the optical network terminal 100, and the network cable 103.

Fig. 2 is a configuration diagram of the optical network terminal, and fig. 2 only shows a configuration of the optical module 200 of the optical network terminal 100 in order to clearly show a connection relationship between the optical module 200 and the optical network terminal 100. As shown in fig. 2, the optical network terminal 100 further includes a circuit board 105 disposed within the housing, a cage 106 disposed on a surface of the circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to access an electrical port of the optical module 200; the heat sink 107 has a projection such as a fin that increases a heat radiation area.

The optical module 200 is inserted into a cage 106 of the onu 100, the cage 106 holds the optical module 200, and heat generated by the optical module 200 is conducted to the cage 106 and then diffused by a heat sink 107. After the optical module 200 is inserted into the cage 106, an electrical port of the optical module 200 is connected to an electrical connector inside the cage 106, so that the optical module 200 is connected to the optical network terminal 100 by a bidirectional electrical signal. Further, the optical port of the optical module 200 is connected to the optical fiber 101, and the optical module 200 establishes bidirectional optical signal connection with the optical fiber 101.

FIG. 3 is a block diagram of a light module according to some embodiments. FIG. 4 is an exploded block diagram of a light module according to some embodiments. As shown in fig. 3-4, the optical module 200 includes a housing (shell), a circuit board 300 disposed within the housing, a lens assembly 400, an optical fiber array 500, and an optical fiber adapter 600.

The shell comprises an upper shell 201 and a lower shell 202, wherein the upper shell 201 is covered on the lower shell 202 to form the shell with two openings; the outer contour of the housing generally appears square.

In some embodiments of the present disclosure, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 located at both sides of the bottom plate 2021 and disposed perpendicular to the bottom plate 2021; the upper case 201 includes a cover 2011, and the cover 2011 covers the two lower side plates 2022 of the lower case 202 to form the above case.

In some embodiments, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 located at both sides of the bottom plate 2021 and disposed perpendicular to the bottom plate 2021; the upper housing 201 includes a cover 2011 and two upper side plates located on two sides of the cover 2011 and perpendicular to the cover 2011, and the two upper side plates are combined with the two lower side plates 2022 to cover the upper housing 201 on the lower housing 202.

The direction of the connecting line of the two

openings

204 and 205 may be the same as the length direction of the optical module 200, or may not be the same as the length direction of the optical module 200. For example, the opening 204 is located at an end portion (right end in fig. 3) of the optical module 200, and the opening 205 is also located at an end portion (left end in fig. 3) of the optical module 200. Alternatively, the opening 204 is located at an end of the optical module 200, and the opening 205 is located at a side of the optical module 200. The opening 204 is an electrical port, and a gold finger of the circuit board 300 extends out of the electrical port 204 and is inserted into an upper computer (for example, the optical network terminal 100); the opening 205 is an optical port configured to access the external optical fiber 101, so that the external optical fiber 101 is connected to the optical transceiver module 400 inside the optical module 200.

The upper shell 201 and the lower shell 202 are combined in an assembly mode, so that the circuit board 300, the lens assembly 400, the optical fiber array 500, the optical fiber adapter 600 and other devices can be conveniently installed in the shells, and the upper shell 201 and the lower shell 202 form packaging protection for the devices. In addition, when the devices such as the circuit board 300, the lens assembly 400, the optical fiber array 500 and the optical fiber adapter 600 are assembled, the positioning components, the heat dissipation components and the electromagnetic shielding components of the devices are convenient to deploy, and the automatic production is facilitated.

In some embodiments, the upper housing 201 and the lower housing 202 are generally made of metal materials, which is beneficial to achieve electromagnetic shielding and heat dissipation.

In some embodiments, the optical module 200 further includes an unlocking component located outside its housing, and the unlocking component is configured to realize a fixed connection between the optical module 200 and the upper computer or release the fixed connection between the optical module 200 and the upper computer.

Illustratively, the unlocking feature 203 is located on the bottom plate 2011 of the upper housing 201, having a catch that mates with a host cage (e.g., the cage 106 of the onu 100). When the optical module 200 is inserted into the cage of the upper computer, the optical module 200 is fixed in the cage of the upper computer by the engaging member of the unlocking member; when the unlocking component is pulled, the clamping piece of the unlocking component moves along with the unlocking component, so that the connection relation between the clamping piece and the upper computer is changed, the clamping relation between the optical module 200 and the upper computer is released, and the optical module 200 can be drawn out from the cage of the upper computer.

The circuit board 300 includes circuit traces, electronic components, and chips, and the electronic components and the chips are connected together by the circuit traces according to a circuit design to implement functions of power supply, electrical signal transmission, grounding, and the like. Examples of the electronic components include capacitors, resistors, transistors, and Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs). The chip includes, for example, a Micro Controller Unit (MCU), a laser driving chip, a limiting amplifier (limiting amplifier), a Clock and Data Recovery (CDR) chip, a power management chip, and a Digital Signal Processing (DSP) chip.

The circuit board 300 is generally a rigid circuit board, which can also perform a bearing function due to its relatively rigid material, for example, the rigid circuit board can stably bear the electronic components and chips; when the optical transceiver component is positioned on the circuit board, the rigid circuit board can also provide smooth bearing; the rigid circuit board can also be inserted into an electric connector in the cage of the upper computer.

The circuit board 300 further includes a gold finger formed on an end surface thereof, the gold finger being composed of a plurality of pins independent of each other. The circuit board 300 is inserted into the cage 106 and connected to the electrical connector inside the cage 106 by gold fingers. The gold fingers may be disposed on only one side of the circuit board 300, or may be disposed on both upper and lower sides of the circuit board 300, so as to adapt to occasions with large demand on the number of pins. The golden finger is configured to establish an electrical connection with the upper computer to realize power supply, grounding, I2C signal transmission, data signal transmission and the like.

Of course, a flexible circuit board is also used in some optical modules. Flexible circuit boards are commonly used in conjunction with rigid circuit boards to supplement the rigid circuit boards. For example, a flexible circuit board may be used to connect the rigid circuit board and the optical transceiver module.

The lens assembly 400 is disposed on the circuit board 300, and is covered above the optical chip (the optical chip mainly refers to a light emitting chip, a driving chip, a light receiving chip, a transimpedance amplifier chip, an amplitude limiting amplifier chip, and other chips related to a photoelectric conversion function) in a cover-and-buckle manner, the lens assembly 400 and the circuit board 300 form a cavity for wrapping the light emitting chip, the light receiving chip, and other optical chips, and the lens assembly 400 and the circuit board 300 together form a structure for packaging the optical chip. Light emitted by the light emitting chip is reflected by the lens assembly 400 and enters the optical fiber array 500, light from the optical fiber array 500 is reflected by the lens assembly 400 and enters the light receiving chip, and the lens assembly establishes mutual optical connection between the light emitting chip and the optical fiber array. The lens assembly not only serves to seal the optical chip, but also to establish optical connections between the optical chip and the optical fiber array. Lens assembly 400 may be integrally formed from a polymer material using an injection molding process. Specifically, the lens assembly 400 is made of a material having a good light transmittance, such as PEI (Polyetherimide) plastic (Ultem series). Because all of the beam propagation elements in lens assembly 400 are formed from the same single sheet of polymer material, the number of molding dies and manufacturing costs and complexity can be significantly reduced. Meanwhile, the lens assembly 400 structure provided by the embodiment of the application only needs to adjust the positions of the incident light beam and the optical fiber, and is simple to install and debug.

Fiber array 500 has one end in optical connection with lens assembly 400 and the other end in optical connection with fiber adapter 600.

The optical fiber array 500 is composed of a plurality of optical fibers, transmits light from the lens assembly to the optical fiber adapter to transmit an optical signal to the outside, and transmits light from the optical fiber adapter to the lens assembly to receive an optical signal from the outside of the optical module. The optical fiber array and the lens assembly have a good optical coupling structure design, multiple paths of converged light from the lens assembly is incident into multiple paths of optical fibers of the optical fiber array, and the optical structure of the lens assembly is utilized to realize optical connection with the light emission chip; multiple paths of light from the optical fiber array are incident into the lens assembly, and optical connection with the light receiving chip is realized by the optical structure of the lens assembly. The optical fiber array and the lens component are in good fixing structure design, and the optical fiber array and the lens component can be relatively fixed, so that the lens component and the circuit board are relatively fixed, and the optical fiber array and the lens component are relatively fixed.

The optical fiber adapter 600 is located at an optical interface formed by the upper and lower shells and is a connecting piece for connecting the optical module with an optical fiber connector (optical fiber) outside the optical module; in addition, in order to connect with an external optical fiber connector, matching structures are often required to be arranged on the upper and lower housings and at the optical interface. Fiber optic adapters are typically of a standard shape and size to facilitate the insertion of external fiber optic connectors/plugs, and have a plurality of fiber optic interfaces therein, including interfaces for outgoing optical signals and interfaces for incoming optical signals. A common fiber optic connector/plug is an MT-type fiber optic connector (e.g., an MPO (Multi-fiber Push On) fiber optic jumper connector). The optical fiber connector is inserted into the optical fiber adapter of the optical module, so that optical signals inside the optical module can be transmitted into the external optical fiber, and optical signals outside the optical module can be transmitted into the optical module.

Fig. 5 is a cross-sectional view of a light module according to some embodiments. Fig. 6 is another cross-sectional view of a light module according to some embodiments. FIG. 7 is a block diagram of an optical module with an upper housing removed according to some embodiments. Fig. 8 is a block diagram with the upper housing and first conductive member removed according to some embodiments. FIG. 9 is a block diagram of an optical module with upper and lower housings removed according to some embodiments. Fig. 10 is a first block diagram of a first conductive element, a second conductive element, a conductive strip, and a fiber optic ribbon according to some embodiments. Fig. 11 is a second block diagram of a first conductive element, a second conductive element, a conductive strip, and a fiber optic ribbon according to some embodiments. Fig. 12 is a third block diagram of a first conductive element, a second conductive element, a conductive strip, and a fiber optic ribbon according to some embodiments. Fig. 13 is a block diagram of a first conductive member, a second conductive member, and a conductive strip in accordance with some embodiments. Fig. 14 is a block diagram of a second conductive member and a conductive strip in accordance with some embodiments. FIG. 15 is a block diagram of a lower housing according to some embodiments. FIG. 16 is a block diagram of an upper housing according to some embodiments. Fig. 17 is another block diagram of an upper housing according to some embodiments. As shown in fig. 5-17, in some embodiments, the upper housing 201 has a first recess 20111, the lower housing 202 has a second recess 20211, and the first recess 20111 and the second recess 20211 enclose a storage cavity through which the optical fiber array 500 is connected to the optical fiber adapter 600. The conductive member 700 is disposed in the cavity. Conductive member 700 includes a first resilient conductive member 701 and a second resilient conductive member 702. The first elastic conductive member 701 is connected with the second elastic conductive member 702, and the optical fiber array 500 is disposed at the connection position of the first elastic conductive member 701 and the second elastic conductive member 702, so that the first elastic conductive member 701 and the second elastic conductive member 702 are seamlessly connected with the optical fiber array 500.

Since the first elastic conductive member 701 and the second elastic conductive member 702 both have elasticity, when the first elastic conductive member 701 and the second elastic conductive member 702 are connected by pressing, the first elastic conductive member 701 and the second elastic conductive member 702 are connected without a gap, so that the first elastic conductive member 701 and the second elastic conductive member 702 are in full contact. When the optical fiber array 500 is disposed at the joint of the first elastic conductive member 701 and the second elastic conductive member 702, the first elastic conductive member 701 and the second elastic conductive member 702 are seamlessly connected to the optical fiber array 500, so that the first elastic conductive member 701 and the second elastic conductive member 702 are fully contacted with the optical fiber array 500.

The first elastic conductive member 701 and the second elastic conductive member 702 not only make the first elastic conductive member 701 and the second elastic conductive member 702 fully contact with the optical fiber array 500, but also protect the optical fiber array 500.

First elastic conductive member 701 is disposed in first recess 20111. Specifically, first recess 20111 is formed by inward depression of cover 2011 of upper housing 201, a bottom surface of first recess 20111 is connected with a bottom surface of first elastic conductive piece 701 without a gap, a first lateral surface of first recess 20111 is connected with a first lateral surface of first elastic conductive piece 701 without a gap, and a second lateral surface of first recess 20111 is connected with a second lateral surface of first elastic conductive piece 701 without a gap. That is, the first elastic conductive member 701 is seamlessly connected with the first concave groove 20111. A first side surface of the first groove 20111, a bottom surface of the first groove 20111 and a second side surface of the first groove 20111 are sequentially connected, the bottom surface of the first groove 20111 and the bottom surface of the first elastic conductive piece 701 are correspondingly arranged, the first side surface of the first groove 20111 and the first side surface of the first elastic conductive piece 701 are correspondingly arranged, and the second side surface of the first groove 20111 and the second side surface of the first elastic conductive piece 701 are correspondingly arranged.

The first elastic conductive member 701 is seamlessly connected with the first recess 20111, so that the first elastic conductive member 701 is sufficiently contacted with the upper housing 201.

A second resilient conductive member 702 is disposed within the second recess 20211. Specifically, the second groove 20211 is formed by inward depression of the bottom plate 2021 of the lower housing 202, the bottom surface of the second groove 20211 is connected to the bottom surface of the second elastic conductive member 702 without a gap, the first side surface of the second groove 20211 is connected to the first side surface of the second elastic conductive member 702 without a gap, and the second side surface of the second groove 20211 is connected to the second side surface of the second elastic conductive member 702 without a gap. I.e. the second elastic conductive member 702 is seamlessly connected with the second recess 20211. A first side surface of the second groove 20211, a bottom surface of the second groove 20211, and a second side surface of the second groove 20211 are sequentially connected, the bottom surface of the second groove 20211 is disposed corresponding to the bottom surface of the second elastic conductive member 702, the first side surface of the second groove 20211 is disposed corresponding to the first side surface of the second elastic conductive member 702, and the second side surface of the second groove 20211 is disposed corresponding to the second side surface of the second elastic conductive member 702.

The second elastic conductive member 702 is seamlessly connected with the second groove 20211 so that the second elastic conductive member 702 is sufficiently contacted with the lower case 202.

As shown in fig. 5-17, in some embodiments, the housing is provided with a third recess. The third grooves may be located on both sides of the first groove 20111 or on both sides of the second groove 20211.

When the third grooves are located on two sides of the first groove 20111, the third grooves are communicated with the first groove 20111, and the third grooves are not communicated with the second groove 20211, that is, the third grooves are located on the cover plate 2011 of the upper housing 201 (the drawing is not included in the present application).

When the third groove is located on both sides of the second groove 20211, the third groove is communicated with the second groove 20211, and the third groove is not communicated with the first groove 20111, that is, the third groove is located on the bottom plate 2021 of the lower housing 202 (as shown in fig. 6).

The third groove is used for placing the conductive adhesive tape 800. The conductive adhesive tape 800 may make the upper housing 201 and the lower housing 202 fully contact except for the first groove 20111 and the second groove 20211.

Because the conductive adhesive tape 800 is formed by directly dispensing the conductive adhesive on the third groove 20212 and curing the conductive adhesive, there is a certain operation error in dispensing the conductive adhesive, which may cause the conductive adhesive tape 800 to be disconnected from the elastic conductive member of the first groove or the second groove communicating with the third groove, so that the upper casing 201 and the lower casing 202 cannot be in full contact, thereby affecting electromagnetic shielding. In order to make the upper case 201 and the lower case 202 sufficiently contact, in some embodiments, the lower surface of the elastic conductive member in the first groove or the second groove, which is not communicated with the third groove, is connected to the conductive adhesive tape 800.

The lower surface of the elastic conductive member in the first groove or the second groove, which is not communicated with the third groove, is connected to the conductive adhesive tape 800. In particular, the method comprises the following steps of,

when the third grooves are located on two sides of the first groove 20111, the width of the first groove 20111 is smaller than the width of the second groove 20211, the width of the first elastic conductive member 701 is smaller than the width of the second elastic conductive member 702, the conductive adhesive tape 800 in the third groove is connected with the lower surface of the second elastic conductive member 702, and the lower surface of the second elastic conductive member 702 refers to the lower surface of the second elastic conductive member 702 in the other region outside the region connected with the first elastic conductive member 701.

When the third groove 20212 is located on both sides of the second groove 20211, the width dimension of the second groove 20211 is smaller than that of the first groove 20111, the width dimension of the second elastic conductive member 702 is smaller than that of the first elastic conductive member 701, and the conductive adhesive tape 800 in the third groove 20212 is connected with the lower surface of the first elastic conductive member 701. The lower surface of the first elastic conductive member 701 refers to the lower surface of the other region of the first elastic conductive member 701 except the region connected with the second elastic conductive member 702. (as shown in FIG. 6)

The lower surface of the first elastic conductive piece 701 or the second elastic conductive piece 702 is connected with the conductive adhesive tape 800, so that the upper shell 201 is fully contacted with the lower shell 202, a closed cavity is formed by the upper shell, the first elastic conductive piece, the second elastic conductive piece, the conductive adhesive tape and the lower shell, the electromagnetic radiation is effectively reduced, and the electromagnetic shielding effect is achieved.

As shown in fig. 6, the conductive adhesive tape 800 is connected to the lower surface of the first elastic conductive member 701 and the side surface of the second elastic conductive member 702, so that the upper casing 201 is further fully contacted with the lower casing 202, and a closed cavity is formed by the upper casing, the first elastic conductive member, the second elastic conductive member, the conductive adhesive tape and the lower casing, thereby effectively reducing electromagnetic radiation and playing a role of electromagnetic shielding.

As shown in fig. 5 to 17, in some embodiments, the vertical distance between the first lateral surface of the second groove 20211 and the first lateral surface of the first groove 20111 is 0.5 mm to 2 mm, and the vertical distance between the second lateral surface of the second groove 20211 and the second lateral surface of the first groove 20111 is 0.5 mm to 2 mm. A first side surface of the second groove 20211 is disposed corresponding to a first side surface of the first groove 20111, and a second side surface of the second groove 20211 is disposed corresponding to a second side surface of the first groove 20111.

When the vertical distance between the first side surface of the second groove 20211 and the first side surface of the first groove 20111 is less than 0.5 mm, and the vertical distance between the second side surface of the second groove 20211 and the second side surface of the first groove 2011 is less than 0.5 mm, the conductive adhesive tape 800 may not be connected to the first elastic conductive member 701 in the first groove 20111 or the second elastic conductive member 702 in the second groove 20211, so that the upper housing 201 and the lower housing 202 cannot be in full contact, and electromagnetic shielding is affected.

When the vertical distance between the first side surface of the second groove 20211 and the first side surface of the first groove 20111 is greater than 2 mm, and the vertical distance between the second side surface of the second groove 20211 and the second side surface of the first groove 20111 is greater than 2 mm, it is not suitable for some small-sized optical modules. Therefore, in some embodiments, the vertical distance between the first lateral face of the second recess 20211 and the first lateral face of the first recess 20111 is between 0.5 and 2 mm, and the vertical distance between the second lateral face of the second recess 20211 and the second lateral face of the first recess 2011 is between 0.5 and 2 mm.

As can be seen in fig. 5-17, in some embodiments, the perpendicular distance between the first side of the second groove 20211 and the first side of the first groove 20111 is equal to the perpendicular distance between the second side of the second groove 20211 and the second side of the first groove 20111.

As shown in fig. 5-17, in some embodiments, the conductive member 700 may be a conductive pad or a conductive foam.

The conductive member 700 is a conductive pad. Specifically, the first elastic conductive member 701 is a first elastic conductive pad, and the second elastic conductive member 702 is a second elastic conductive pad.

The conductive member 700 is a conductive foam. Specifically, the first elastic conductive member 701 is a first elastic conductive foam, and the second elastic conductive member 702 is a second elastic conductive foam.

As can be seen in fig. 5-17, in some embodiments, the housing is further provided with a first stop protrusion 20112 and a second stop protrusion 20213. The first limit projection 20112 is formed by inwardly recessing the cover plate 2011 of the upper housing 201, and the second limit projection 20213 is formed by inwardly recessing the bottom plate 2021 of the lower housing 202. The first limit protrusion 20112 is disposed on the upper housing 201. The second limiting protrusion 20213 is disposed on the lower housing 202. The second limit projection 20213 is not connected to the first limit projection 20112. The second limit protrusion 20213 and the first limit protrusion 20112 form a first gap. The first notch is used for the optical fiber to pass through. The first and second limiting

protrusions

20112 and 20213 are used to limit the position of the fiber optic adapter 600.

As can be seen in fig. 5-17, in some embodiments, the housing is further provided with a first support protrusion 20113 and a second support protrusion 20214. The first supporting protrusions 20113 are formed by inwardly recessing the cap plate 2011 of the upper case 201, and the second supporting protrusions 20214 are formed by inwardly recessing the bottom plate 2021 of the lower case 202. First supporting protrusion 20113 is disposed on upper housing 201, and first supporting protrusion 20113 and first limiting protrusion 20112 are respectively located at two ends of first recess 20111. The second supporting protrusion 20214 is disposed on the lower housing 202, and the second supporting protrusion 20214 and the second limiting protrusion 20213 are respectively disposed at two ends of the second groove 20211. The first support protrusions 20113 are not connected to the second support protrusions 20214. The first support protrusion 20113 and the second support protrusion 20214 enclose the second notch. The first notch and the second notch are respectively located at two ends of the cavity surrounded by the first groove 20111 and the second groove 20211. The fiber array 500 is inserted into the fiber adapter 600 by the lens assembly 400 through the second notch, the cavity, and the first notch in sequence.

The first concave groove 20111 is more concave relative to the first limit protrusion 20112 or the first support protrusion 20113. The second groove 20112 is recessed relative to the second limit projection 20213 or the second support projection 20214. The height difference between the first elastic conductive member 701 and the bottom surface of the first recess 20111 is greater than the height difference between the first limiting protrusion 20112 or the first supporting protrusion 20113 and the bottom surface of the first recess 20111. The height difference between the second elastic conductive member 702 and the bottom surface of the second groove 20112 is greater than the height difference between the second limiting protrusion 20213 or the second supporting protrusion 20214 and the bottom surface of the second groove 20112.

The application provides an optical module, which comprises an upper shell and a lower shell. The upper shell is provided with a first groove. The lower shell and the upper shell enclose a city shell. The lower shell is provided with a second groove. The housing is provided with a third groove. The first groove is used for placing the first elastic conductive piece. The first elastic conductive piece is in seamless connection with the first groove, so that the first elastic conductive piece is in full contact with the upper shell. The second groove is used for placing a second elastic conductive piece. The second elastic conductive piece is in seamless connection with the second groove, so that the second elastic conductive piece is in full contact with the lower shell. The first elastic conductive piece is connected with the second elastic conductive piece, and the optical fiber array is arranged at the joint of the first elastic conductive piece and the second elastic conductive piece, so that the first elastic conductive piece and the second elastic conductive piece are in seamless connection with the optical fiber array. Because the first elastic conductive piece and the second elastic conductive piece both have elasticity, when the first elastic conductive piece and the second elastic conductive piece are connected in an extruding way, the first elastic conductive piece and the second elastic conductive piece are connected without a gap, so that the first elastic conductive piece and the second elastic conductive piece are fully contacted. When the optical fiber array is arranged at the joint of the first elastic conductive piece and the second elastic conductive piece, the first elastic conductive piece and the second elastic conductive piece are in seamless connection with the optical fiber array, so that the first elastic conductive piece and the second elastic conductive piece are in full contact with the optical fiber array. And the third groove is communicated with the first groove or the second groove and is used for placing the conductive adhesive tape. The conductive adhesive tape can make the upper shell and the lower shell fully contact except for the first groove and the second groove. The third grooves may be located on both sides of the first grooves, or on both sides of the second grooves. When the third grooves are positioned on two sides of the first groove, the width dimension of the first groove is smaller than that of the second groove, the width dimension of the first elastic conductive piece is smaller than that of the second elastic conductive piece, and the lower surface of the first elastic conductive piece is connected with the conductive adhesive tape; when the third grooves are positioned on two sides of the second groove, the width dimension of the second groove communicated with the third grooves is smaller than that of the first groove, the width dimension of the second elastic conductive piece is smaller than that of the first elastic conductive piece, and the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape. The lower surface of the first elastic conductive piece or the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape, so that the upper shell is fully contacted with the lower shell, a closed cavity is formed, the electromagnetic radiation is effectively reduced, and the electromagnetic shielding effect is achieved. In the application, the conductive adhesive tape in the third groove enables the upper shell to be in full contact with the lower shell in the region except the first groove and the second groove, the first elastic conductive piece in the first groove and the second elastic conductive piece in the second groove are arranged in the joint of the first elastic conductive piece and the second elastic conductive piece, the width size of the first groove communicated with the third groove is smaller than that of the second groove, the width size of the first elastic conductive piece is smaller than that of the second elastic conductive piece, so that the lower surface of the first elastic conductive piece is connected with the conductive adhesive tape, or the width size of the second groove communicated with the third groove is smaller than that of the first groove, the width size of the second elastic conductive piece is smaller than that of the first elastic conductive piece, so that the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape, further the upper shell is in full contact with the lower shell, further the upper shell, the first elastic conductive piece, the second elastic conductive piece, the conductive adhesive tape and the lower shell form a closed cavity, and electromagnetic radiation is effectively reduced, thereby playing a role of electromagnetic shielding.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims

1. A light module, comprising:

an upper housing provided with a first groove;

the shell is provided with a third groove;

the first groove is used for placing a first elastic conductive piece;

the second groove is used for placing a second elastic conductive piece;

the first elastic conductive piece is connected with the second elastic conductive piece, and an optical fiber array is arranged at the joint of the first elastic conductive piece and the second elastic conductive piece, so that the first elastic conductive piece and the second elastic conductive piece are in seamless connection with the optical fiber array;

the width of the first groove communicated with the third groove is smaller than that of the second groove, and the width of the first elastic conductive piece is smaller than that of the second elastic conductive piece, so that the lower surface of the second elastic conductive piece is connected with the conductive adhesive tape;

or,

the width of the second groove communicated with the third groove is smaller than that of the first groove, and the width of the second elastic conductive piece is smaller than that of the first elastic conductive piece, so that the lower surface of the first elastic conductive piece is connected with the conductive adhesive tape.

2. The optical module of claim 1, wherein the third grooves are located on both sides of the first groove or on both sides of the second groove.

3. The optical module according to claim 1, wherein a vertical distance between the first side surface of the second groove and the first side surface of the first groove is 0.5 mm to 2 mm, and a vertical distance between the second side surface of the second groove and the second side surface of the first groove is 0.5 mm to 2 mm.

4. The optical module of claim 3, wherein a vertical distance between the first side of the second groove and the first side of the first groove is equal to a vertical distance between the second side of the second groove and the second side of the first groove.

5. The optical module of claim 1, wherein the first elastic conductive member is a first elastic conductive pad, and the second elastic conductive member is a second elastic conductive pad.

6. The optical module of claim 1, wherein the first elastic conductive member is a first elastic conductive foam, and the second elastic conductive member is a second elastic conductive foam.

7. The optical module according to claim 1, wherein the housing is further provided with a first limit projection and a second limit projection;

the first limiting bulge is arranged on the upper shell;

the second limiting bulge is arranged on the lower shell and is not connected with the first limiting bulge.

8. The light module of claim 7, wherein the housing is further provided with a first support protrusion and a second support protrusion;

the first supporting bulge is arranged on the upper shell and is respectively positioned at two ends of the first groove together with the first limiting bulge;

the second supporting bulges are arranged on the lower shell, are respectively positioned at two ends of the second groove and are not connected with the first supporting bulges.