CN112230350A

CN112230350A - Optical module

Info

Publication number: CN112230350A
Application number: CN202011147846.XA
Authority: CN
Inventors: 崔伟; 司宝峰; 潘红超; 邵乾; 刘旭霞
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-15
Anticipated expiration: 2040-10-23
Also published as: CN112230350B

Abstract

The application discloses an optical module, which comprises an upper shell, a lower shell, a circuit board, a lens assembly and a jaw assembly, wherein the lens assembly is arranged at one end of the circuit board close to an optical port of the optical module; the jack catch component is arranged at an optical port of the optical module, one end of the jack catch component is directly connected with the lens component, and the other end of the jack catch component is connected with an external optical fiber; the clamping jaw assembly comprises a clamping jaw and a shielding plate connected with the clamping jaw, a first limiting piece is arranged on the lower shell, a second limiting piece is arranged on the clamping jaw, and the first limiting piece is embedded in the second limiting piece; a first locating piece is arranged in the first locating piece, a second locating piece is arranged on the side face of the clamping jaw provided with the second locating piece, and the second locating piece is inserted into the first locating piece. The application provides an optical module sets up the lens subassembly in the one end that the circuit board is close to the optical module light mouth, has realized the lug connection of outside optic fibre and lens subassembly through fixing the jack catch subassembly on the casing, does not need the optical fiber ribbon, has saved the space to a certain extent, the further development of the optical module of being convenient for.

Description

Optical module

Technical Field

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

Background

In the novel business and application modes of cloud computing, mobile internet, video and the like, an optical communication technology is used, and in optical communication, an optical module is a tool for realizing the interconversion of photoelectric signals and is one of key devices in optical communication equipment. The optical module is mainly used for photoelectric and electro-optical conversion, an electric signal is converted into an optical signal by a transmitting end of the optical module and is transmitted out through an optical fiber, and a received optical signal is converted into an electric signal by a receiving end of the optical module.

In some optical modules with cob (chip On board) package structures, an optical fiber ribbon and a claw are arranged in the optical module to realize transmission and reception of optical signals in the optical module. Specifically, one end of the optical fiber ribbon is connected with the lens assembly through the optical fiber connector, the other end of the optical fiber ribbon is connected with the clamping jaw through the optical fiber connector, the clamping jaw is used for realizing connection of the optical fiber ribbon and external optical fibers, and then transmission of optical signals between the optical fiber ribbon and the external optical fibers is realized. However, when the optical fiber ribbon is used in the optical module to transmit an optical signal, a corresponding installation control needs to be reserved for installation of the optical fiber ribbon, and meanwhile, the reliability risk caused by damage of the optical fiber ribbon needs to be borne, and the problem that the optical fiber ribbon correspondingly increases the manufacturing cost of the optical module is also solved.

Disclosure of Invention

The application provides an optical module, optical fiber ribbons are not needed in the transmission of optical signals in the optical module, the space is saved to a certain degree, the reliability risk caused by the damage of the optical fiber ribbons is reduced, and the manufacturing cost is reduced.

In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:

the embodiment of the application discloses an optical module, includes:

an upper housing;

the lower shell is covered on the upper shell;

the circuit board is arranged in a cavity formed by the upper shell and the lower shell;

the lens assembly is arranged at one end of the circuit board close to the optical port of the optical module and used for changing the propagation direction of the signal light;

the jack catch component is arranged at an optical port of the optical module, one end of the jack catch component is directly connected with the lens component, and the other end of the jack catch component is connected with an external optical fiber;

the clamping jaw assembly comprises a clamping jaw and a shielding plate connected with the clamping jaw, a first limiting piece is arranged on the lower shell, a second limiting piece is arranged on one side face of the clamping jaw, and the first limiting piece is embedded in the second limiting piece; the first locating part is arranged in the first locating part, the second locating part is arranged on the side face of the clamping jaw provided with the second locating part, and the second locating part is inserted into the first locating part to connect the clamping jaw assembly with the lower shell.

In the optical module that this application provided, light emission chip and light receiving chip set up on the circuit board, and the lens subassembly cover is established on light emission chip and light receiving chip and is set up the tip that is close to optical module light mouth at the circuit board, and the lens subassembly is used for changing the propagation direction that light emission chip transmitted signal light and light receiving chip waited to receive signal light. The optical module also comprises a jaw assembly, the jaw assembly is arranged at an optical port of the optical module, one end of the jaw assembly is directly connected with the lens assembly, the other end of the jaw assembly is used for connecting an external optical fiber, and the direct connection between the lens assembly and the external optical fiber can be realized through the jaw assembly; the clamping jaw assembly comprises a clamping jaw and a shielding plate connected with the clamping jaw, the shielding plate can be used for electromagnetically shielding the optical module, so that electromagnetic waves generated inside the optical module are prevented from leaking out from the joint of the lens assembly and the clamping jaw assembly, and the electromagnetic shielding performance of the optical module can be improved; in addition, a first limiting piece is arranged on the lower shell, a second limiting piece is arranged on one side surface of the clamping jaw, and the first limiting piece is embedded in the second limiting piece; a first locating piece is arranged in the first locating piece, a second locating piece is arranged on the side face of the clamping jaw provided with the second locating piece, and the second locating piece is inserted into the first locating piece to connect the clamping jaw assembly with the lower shell, so that the clamping jaw assembly can be fixed. The application provides an optical module sets up the lens subassembly in the one end that the circuit board is close to optical module light mouth, can realize the lug connection of lens subassembly and outside optic fibre through the jack catch subassembly, and be fixed in the jack catch subassembly on the casing down, and then can realize the direct transmission of light signal between lens subassembly and the outside optic fibre, and need not with the help of the optic fibre area, can save the optic fibre area that light signal transmission needs between lens subassembly and outside optic fibre, can reduce the used space of optic fibre area in the optical module, reduce the reliability risk and the reduction manufacturing cost that the optic fibre area damages and brings, be convenient for the further development of optical module.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal;

fig. 2 is a schematic structural diagram of an optical network terminal;

fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present application;

fig. 4 is an exploded schematic view of an optical module according to an embodiment of the present disclosure;

fig. 5 is a partially exploded schematic view of a latch assembly, a lens assembly and a circuit board in an optical module according to an embodiment of the present disclosure;

fig. 6 is an exploded schematic view of a latch assembly in an optical module according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a pawl in an optical module according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a shielding plate in an optical module according to an embodiment of the present disclosure;

fig. 9 is a schematic view of another angular structure of a shielding plate in an optical module according to an embodiment of the present disclosure;

fig. 10 is an assembly schematic diagram of a latch and a shielding plate in an optical module according to an embodiment of the present disclosure;

fig. 11 is an exploded schematic view of a lens assembly and a circuit board in an optical module according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a lens assembly in an optical module according to an embodiment of the present disclosure;

fig. 13 is an assembled cross-sectional view of a lens assembly and a latch assembly in an optical module according to an embodiment of the present disclosure;

fig. 14 is an assembly schematic diagram of an optical module provided in the embodiment of the present application, where an upper housing and an unlocking component are removed;

fig. 15 is a cross-sectional view of an optical module according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a latch assembly in an optical module according to an embodiment of the present disclosure;

fig. 17 is a schematic structural diagram of a lower housing in an optical module according to an embodiment of the present application;

fig. 18 is a schematic view of a partial structure at another angle of a lower housing in an optical module according to an embodiment of the present disclosure;

fig. 19 is a partially assembled cross-sectional view of a latch assembly and a lower housing in an optical module according to an embodiment of the present disclosure;

fig. 20 is a schematic view of another angle structure of a latch assembly in an optical module according to an embodiment of the present disclosure;

fig. 21 is a schematic structural diagram of an upper housing of an optical module according to an embodiment of the present disclosure;

fig. 22 is a partially assembled cross-sectional view of an upper housing, a lens assembly, a circuit board, a latch assembly, and a lower housing of an optical module according to an embodiment of the present disclosure;

fig. 23 is a partial assembly cross-sectional view of an upper housing, a lens assembly, a circuit board, and a lower housing of an optical module according to an embodiment of the present disclosure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

One of the core links of optical fiber communication is the interconversion of optical and electrical signals. The optical fiber communication uses optical signals carrying information to transmit in information transmission equipment such as optical fibers/optical waveguides, and the information transmission with low cost and low loss can be realized by using the passive transmission characteristic of light in the optical fibers/optical waveguides; meanwhile, the information processing device such as a computer uses an electric signal, and in order to establish 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, it is necessary to perform interconversion between the electric signal and the optical signal.

The optical module realizes the function of interconversion of optical signals and electrical signals in the technical field of optical fiber communication, and the interconversion of the optical signals and the electrical signals is the core function of the optical module. The optical module is electrically connected with an external upper computer through a golden finger on an internal circuit board of the optical module, and the main electrical connection comprises power supply, I2C signals, data information, grounding and the like; the electrical connection mode realized by the gold finger has become the mainstream connection mode of the optical module industry, and on the basis of the mainstream connection mode, the definition of the pin on the gold finger forms various industry protocols/specifications.

Fig. 1 is a schematic diagram of connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes interconnection among the optical network terminal 100, the optical module 200, the optical fiber 101, and the network cable 103.

One end of the optical fiber 101 is connected with a far-end server, one end of the network cable 103 is connected with local information processing equipment, and the connection between the local information processing equipment and the far-end server is completed by the connection between the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is made by the optical network terminal 100 having the optical module 200.

An optical port of the optical module 200 is externally accessed to the optical fiber 101, and establishes bidirectional optical signal connection with the optical fiber 101; an electrical port of the optical module 200 is externally connected to the optical network terminal 100, and establishes bidirectional electrical signal connection with the optical network terminal 100; the optical module realizes the mutual conversion of optical signals and electric signals, thereby realizing the establishment of information connection between the optical fiber and the optical network terminal. Specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100, and the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module and input to the optical fiber.

The optical network terminal is provided with an optical module interface 102, which is used for accessing an optical module 200 and establishing bidirectional electric signal connection with the optical module 200; the optical network terminal is provided with a network cable interface 104, which is used for accessing the network cable 103 and establishing bidirectional electric signal connection with the network cable 103; the optical module 200 is connected to the network cable 103 via the optical network terminal 100. Specifically, the optical network terminal transmits a signal from the optical module to the network cable and transmits the signal from the network cable to the optical module, and the optical network terminal serves as an upper computer of the optical module to monitor the operation of the optical module.

At this point, a bidirectional signal transmission channel is established between the remote server and the local information processing device through the optical fiber, the optical module, the optical network terminal and the network cable.

Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network terminal is an upper computer of the optical module, provides data signals for the optical module, and receives the data signals from the optical module, and the common upper computer of the optical module also comprises an optical line terminal and the like.

Fig. 2 is a schematic diagram of an optical network terminal structure. As shown in fig. 2, the optical network terminal 100 has a circuit board 105, and a cage 106 is disposed on a surface of the circuit board 105; an electric connector is arranged in the cage 106 and used for connecting an electric port of an optical module such as a golden finger; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a first boss portion such as a fin that increases a heat radiation area.

The optical module 200 is inserted into the optical network terminal 100, specifically, an electrical port of the optical module is inserted into an electrical connector inside the cage 106, and an optical port of the optical module is connected to the optical fiber 101.

The cage 106 is positioned on the circuit board, and the electrical connector on the circuit board is wrapped in the cage, so that the electrical connector is arranged in the cage; the optical module is inserted into the cage, held by the cage, and the heat generated by the optical module is conducted to the cage 106 and then diffused by the heat sink 107 on the cage.

Fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present application, and fig. 4 is an exploded schematic diagram of the optical module according to the embodiment of the present application. As shown in fig. 3 and 4, an optical module 200 provided in the embodiment of the present application includes an upper housing 201, a lower housing 202, an unlocking member 203, a circuit board 300, a lens assembly 400, and a latch assembly 500.

The upper shell 201 is covered on the lower shell 202 to form a wrapping cavity with two openings; the outer contour of the packaging cavity generally presents a square body. Specifically, the lower housing 202 includes a main board and two side boards located at two sides of the main board and arranged perpendicular to the main board; the upper shell comprises a cover plate, and the cover plate covers two side plates of the upper shell to form a wrapping cavity; the upper shell may further include two side walls disposed at two sides of the cover plate and perpendicular to the cover plate, and the two side walls are combined with the two side plates to cover the upper shell 201 on the lower shell 202.

The two openings can be two end openings (204, 205) located at the same end of the optical module, or two openings located at different ends of the optical module; one opening is an electric port 204, and a gold finger of the circuit board extends out of the electric port 204 and is inserted into an upper computer such as an optical network terminal; the other opening is an optical port 205 for external optical fiber access to connect the jaw assembly 500 and the lens assembly 400 inside the optical module; the photoelectric devices such as the circuit board 300, the lens assembly 400, the jaw assembly 500 and the like are positioned in the wrapping cavity.

The assembly mode of combining the upper shell and the lower shell is adopted, so that the circuit board 300, the lens assembly 400, the jaw assembly 500 and other devices can be conveniently installed in the shells, and the upper shell and the lower shell form the outermost packaging protection shell of the module; the upper shell and the lower shell are made of metal materials generally, electromagnetic shielding and heat dissipation are achieved, the shell of the optical module cannot be made into an integral component generally, and therefore when devices such as a circuit board are assembled, the positioning component, the heat dissipation component and the electromagnetic shielding component cannot be installed, and production automation is not facilitated.

The unlocking component 203 is located on the outer wall of the wrapping cavity/lower shell 202, and is used for realizing the fixed connection between the optical module and the upper computer or releasing the fixed connection between the optical module and the upper computer.

The unlocking component 203 is provided with a clamping component matched with the upper computer cage; the end of the unlocking member 203 is pulled to make the unlocking member 203 relatively move on the surface of the outer wall; the optical module is inserted into the cage of the upper computer, and the optical module is fixed in the cage of the upper computer by the clamping component of the unlocking component 203; by pulling the unlocking member 203, the engaging member of the unlocking member 203 moves along with the unlocking member, and further, the connection relationship between the engaging member and the upper computer is changed, so that the engagement relationship between the optical module and the upper computer is released, and the optical module can be drawn out from the cage of the upper computer.

The circuit board 300 is provided with circuit traces, electronic components (such as capacitors, resistors, triodes, and MOS transistors), and chips (such as an MCU, a laser driver chip, a limiting amplifier chip, a clock data recovery CDR, a power management chip, and a data processing chip DSP).

The circuit board 300 is used to provide signal circuits for signal electrical connection, which can provide signals. The circuit board 300 connects the electrical devices in the optical module together according to the circuit design through circuit wiring to realize the electrical functions of power supply, electrical signal transmission, grounding and the like.

The circuit board is generally a hard circuit board, and the hard circuit board can also realize a bearing effect due to the relatively hard material of the hard circuit board, for example, the hard circuit board can stably bear a chip; when the optical transceiver component is positioned on the circuit board, the rigid circuit board can also provide stable bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, and specifically, a metal pin/golden finger is formed on the surface of the tail end of one side of the hard circuit board and is used for being connected with the electric connector; these are not easily implemented with flexible circuit boards.

A flexible circuit board is also used in a part of the optical module to supplement a rigid circuit board; the flexible circuit board is generally used in combination with a rigid circuit board, for example, the rigid circuit board may be connected to the optical transceiver module by using the flexible circuit board.

In the embodiment of the present application, a gold finger is disposed at one end of the circuit board 300, and the lens assembly 400 is disposed at the other end of the circuit board 300, so that the lens assembly 400 is directly connected to the jaw assembly 500 without connecting the lens assembly 400 and the jaw assembly 500 through an optical fiber ribbon, the structure is simple, and complexity of connection between the lens assembly 400 and the jaw assembly 500 in the industry at present is avoided. Specifically, the light emitting chip and/or the light receiving chip are disposed at one end of the circuit board 300 away from the golden finger, the lens assembly is covered above the light emitting chip and/or the light receiving chip, and the lens assembly 400 is directly connected with the jaw assembly 500, so that light emitted by the light emitting chip is reflected by the lens assembly 400 and then is connected with an external optical fiber through the jaw assembly 500, thereby realizing emission of an optical signal; the optical signal transmitted by the external optical fiber is transmitted to the lens assembly 400 through the claw assembly 500, and the signal light is reflected to the light receiving chip through the lens assembly 400, so that the optical signal is received.

Fig. 5 is a partially exploded schematic view of a latch assembly 500, a lens assembly 400 and a circuit board 300 in an optical module according to an embodiment of the present disclosure, and fig. 6 is an exploded schematic view of the latch assembly 500 in the optical module according to the embodiment of the present disclosure. As shown in fig. 5 and 6, the latch assembly 500 is disposed on a side of the circuit board 300 away from the golden finger, and is directly connected to the lens assembly 400 on the circuit board 300; the lens assembly 400 is provided with a groove, the jaw assembly 500 extends out of a positioning protrusion, and when the jaw assembly 500 is connected with the lens assembly 400, the positioning protrusion on the jaw assembly 500 is in snap connection with the groove on the lens assembly 400, so that the jaw assembly 500 is directly connected with the lens assembly 400; and the side of the jaw assembly 500 facing the lens assembly 400 abuts the circuit board 300.

Specifically, the latch assembly 500 includes a latch 510, a shielding plate 520, and a conductive rubber strip 530, the latch 510 is connected to the shielding plate 520 by a snap, and the conductive rubber strip 530 is sleeved on the outer circumference of the shielding plate 520 to increase the electromagnetic shielding in the optical module. That is, when the clamping jaw assembly 500 is connected to the lens assembly 400, the shielding plate 520 and the conductive rubber strip 530 can shield the electromagnetic wave generated by the lens assembly 400 in the optical module, so as to prevent the electromagnetic wave from leaking out from the clamping jaw 510, thereby increasing the electromagnetic shielding performance of the optical module.

Fig. 7 is a schematic structural diagram of a latch 510 in an optical module according to an embodiment of the present disclosure. As shown in fig. 7, one side of the latch 510 facing the circuit board 300 is an optical connector end face, and the other side of the latch facing away from the circuit board 300 is an optical fiber connector end face, where an optical connector port is arranged on the optical connector end face, the optical connector port is used for connecting with the lens assembly 400, and an optical fiber connector port is arranged on the optical fiber connector end face, and the optical fiber connector port can be used for inserting an external optical fiber connector; the claw 510 is provided with a through hole 514, and two ends of the through hole 514 are respectively communicated with the optical connector port and the optical fiber connector port, so that when the lens assembly 400 is connected with the optical connector port on the end face of the optical connector, the lens assembly 400 can be connected with an external optical fiber connector, and thus, the transmission or the reception of optical signals can be realized.

The claws 510 are respectively provided with hooks 511 on opposite side surfaces connected with the optical connector end surface and the optical fiber connector end surface, and the hooks 511 are used for locking or unlocking the external optical fiber connector. Namely, when the external optical fiber connector is inserted into the optical fiber connector port of the clamping jaw 510, the external optical fiber connector is locked by the clamping hook 511, so as to ensure the installation stability of the external optical fiber connector; also, when the external optical fiber connector needs to be removed, the external optical fiber connector can be separated from the optical fiber connector port by pressing the hook 511.

When the clamping jaws 510 are connected to the lens assembly 400, electromagnetic waves generated by the operation of the lens assembly 400 are easily leaked out from the gaps of the through holes 514 of the clamping jaws 510, which causes electromagnetic interference to the communication equipment outside the optical module, so that a shielding member can be arranged between the clamping jaws 510 and the lens assembly 400 to shield the electromagnetic waves generated by the lens assembly 400. In the embodiment of the present application, the shielding plate 520 is disposed between the latch 510 and the lens assembly 400, and is connected to the latch 510 to shield the electromagnetic waves generated by the lens assembly 400.

Fig. 8 is a schematic structural diagram of a shielding plate 520 in an optical module according to an embodiment of the present disclosure, and fig. 9 is a schematic structural diagram of another angle of the shielding plate 520 in the optical module according to the embodiment of the present disclosure. As shown in fig. 8 and 9, the shielding plate 520 is a case with an opening at one end, and includes a first side 5201, a second side 5202, a third side 5203, a fourth side 5204, and a fifth side 5205 connected to the first side 5201, the first side 5201 faces the circuit board 300, the second side 5202 is disposed opposite to the fourth side 5204, and the third side 5203 is disposed opposite to the fifth side 5205. The shielding plate 520 covers the end surface of the claw 510 facing the circuit board 300, that is, the second side surface 5202, the third side surface 5203, the fourth side surface 5204 and the fifth side surface 5205 are respectively abutted against the four side surfaces of the claw 510, so that the first side surface 5201 shields the through hole 514 of the claw 510, and the electromagnetic wave inside the optical module is prevented from leaking out through the gap of the through hole 514.

Fig. 10 is an assembly diagram of a latch 510 and a shielding plate 520 in an optical module according to an embodiment of the present disclosure. As shown in fig. 10, in order to realize the connection between the latch 510 and the shielding plate 520, a first positioning member, which may be a positioning protrusion 512, is disposed on an end surface of the latch 510 facing the circuit board 300, and the positioning protrusion 512 extends toward the circuit board 300; the first side 5201 of the shielding plate 520 is disposed with a second positioning member, which may be a first positioning slot 524. When the shielding plate 520 is covered on the latch 510, the positioning protrusion 512 of the latch 510 is inserted into the first positioning groove 524 of the shielding plate 520, so as to position the shielding plate 520.

In order to limit the shielding plate 520, a limiting member 5121 is disposed on the positioning protrusion 512 of the claw 510, the limiting member 5121 extends toward the through hole 514, and the limiting member 5121 and the positioning protrusion 512 may be an integral structure; the first positioning groove 524 of the shielding plate 520 is provided with a corresponding first positioning groove 5241, and the first positioning groove 5241 is communicated with the first positioning groove 524 and may be an integrated groove. When the shielding plate 520 is covered on the claw 510, the first positioning groove 524 on the shielding plate 520 is aligned with the positioning protrusion 512 on the claw 510, the first limiting groove 5241 is aligned with the limiting member 5121, and the first positioning groove 524 and the first limiting groove 5241 on the shielding plate 520 move from right to left along the positioning protrusion 512 and the limiting member 5121 on the claw 510 until the inner side surface of the first side surface 5201 of the shielding plate 520 abuts against the optical connector end surface of the claw 510.

In the embodiment of the present application, the optical connector end surface of the claw 510 is symmetrically provided with positioning protrusions 512, that is, the left and right sides of the optical connector end surface are both provided with positioning protrusions 512, the two positioning protrusions 512 are symmetrically arranged about the central axis direction (front-back direction) of the claw 510, and the two positioning protrusions 512 are respectively provided with a limiting member 5121. Similarly, the first side surface 5201 of the shielding plate 520 is symmetrically provided with first positioning grooves 524, that is, the left and right sides of the first side surface 5201 are both provided with first positioning grooves 524, two first positioning grooves 524 are symmetrically provided with respect to the central axis direction (front-rear direction) of the shielding plate 520, and the two first positioning grooves 524 are provided with first positioning grooves 5241, respectively. In this way, the latch 510 positions the shielding plate 520 through the positioning protrusion 512 and the first positioning groove 524, which are symmetrically disposed.

In the embodiment of the present application, the cross-sectional shape of the positioning protrusion 512 on the pawl 510 may be circular or rectangular, so that the first positioning groove 524 on the shielding plate 520 is a corresponding circular groove or a rectangular groove; the cross-sectional shape of the position-limiting member 5121 on the positioning protrusion 512 can be semicircular, so that the first position-limiting groove 5241 on the first positioning groove 524 is a corresponding semicircular groove.

In order to realize the fixed connection between the clamping jaw 510 and the shielding plate 520, two opposite side walls of the clamping jaw 510 are respectively provided with a fixed boss 516, that is, the left side surface and the right side surface of the clamping jaw 510 are both provided with the fixed bosses 516; the third side 5203 and the fifth side 5205 of the shielding plate 520 are respectively provided with a fixing opening. When the shielding plate 520 covers the latch 510, the fixing bosses 516 on the side walls of the latch 510 are engaged with the fixing openings on the two side surfaces of the shielding plate 520, so that the latch 510 is engaged with the shielding plate 520.

In the embodiment of the present application, two fixing bosses 516 are disposed on the left and right side surfaces of the jaw 510, and the two fixing bosses 516 are disposed up and down on the side surface of the jaw 510; two fixing holes (a first fixing hole 525 and a second fixing hole 526) are also formed in the third side 5203 and the fifth side 5205 of the shielding plate 520, and the first fixing hole 525 and the second fixing hole 526 are vertically disposed on the third side 5203 or the fifth side 5205.

In order to facilitate the clamping of the fixing boss 516 on the pawl 510 into the first fixing hole 525 and the second fixing hole 526 of the shielding plate 520, the side surface of the fixing boss 516 facing the shielding plate 520 is provided with an inclined surface 5161, the inclined surface 5161 is inclined from the left side to the right side of the side surface of the pawl 510, and the front-rear dimension of the left side of the fixing boss 516 is smaller than the front-rear dimension of the right side of the fixing boss 516. Therefore, when the fixing boss 516 is clamped into the first fixing opening 525 and the second fixing opening 526, the inclined plane 5161 is provided to facilitate the first fixing opening 525 and the second fixing opening 526 on the shielding plate 520 to be sleeved on the fixing boss 516 of the clamping jaw 510, so that the fixing opening is installed on the fixing boss 516 along the inclined plane 5161, and the clamping jaw 510 is fixedly connected with the shielding plate 520.

In the embodiment of the present application, the clamping jaws 510 are fixed between the upper housing 201 and the lower housing 202, when the clamping jaws 510 and the shielding plate 520 are assembled and connected to the lens assembly 400, electromagnetic waves generated by the operation of the lens assembly 400 may leak out from the assembly gaps between the clamping jaws 510 and the upper housing 201 and the lower housing 202, so that the conductive rubber strips 530 are sleeved on the side surfaces of the shielding plate 520, that is, four inner side surfaces of the conductive rubber strips 530 are respectively abutted against the second side surface 5202, the third side surface 5203, the fourth side surface 5204 and the fifth side surface 5205 of the shielding plate 520, and the outer side surfaces of the conductive rubber strips 530 are respectively abutted against the inner side surfaces of the upper housing 201 and the lower housing 202, so as to seal the assembly gaps between the clamping jaws 510 and the upper housing 201 and the. In this way, the shielding plate 520 may shield the electromagnetic waves leaked from the through holes 514 of the latches 510, and the conductive rubber strips 530 may shield the electromagnetic waves leaked from the assembly gaps between the latches 510 and the upper and

lower housings

201 and 202, thereby improving the electromagnetic shielding performance of the optical module.

In the embodiment of the present application, the assembly process of the jaw assembly 500 is as follows: firstly, aligning the first positioning groove 524 and the first limiting groove 5241 on the first side 5201 of the shielding plate 520 with the positioning protrusion 512 and the limiting member 5121 on the claw 510, and then inserting the positioning protrusion 512 and the limiting member 5121 into the first positioning groove 524 and the first limiting groove 5241, respectively; then the first positioning groove 524 of the shielding plate 520 moves from right to left along the positioning protrusion 512 of the claw 510 until the inner side surface 5201 of the first side surface 5201 of the shielding plate 520 abuts against the end surface of the optical connector of the claw 510; meanwhile, the fixing bosses 516 on the two opposite side surfaces of the jaw 510 are respectively clamped into the first fixing opening 525 and the second fixing opening 526 on the third side surface 5203 and the fifth side surface 5205 of the shielding plate 520, so that the jaw 510 is fixedly connected with the shielding plate 520; then, the conductive rubber strip 530 is fitted around the peripheries of the second side 5202, the third side 5203, the fourth side 5204 and the fifth side 5205 of the assembled shield plate 520.

Fig. 11 is an exploded schematic view of a lens assembly 400 and a circuit board 300 in an optical module according to an embodiment of the present disclosure, and fig. 12 is a schematic structural view of the lens assembly 400 in the optical module according to the embodiment of the present disclosure. As shown in fig. 11 and 12, the lens assembly 400 includes a lens assembly body 410 and a lens assembly connecting portion 420, wherein the lens assembly body 410 is used for covering the light emitting chip and the light receiving chip, and further is used for changing the propagation directions of the signal light emitted by the light emitting chip and the signal light to be received by the light receiving chip; the lens assembly attachment portion 420 is used to attach the jaw assembly 500 so as to couple the lens assembly 400 to an external optical fiber.

Specifically, a third positioning element is disposed on an end surface of the lens assembly connecting portion 420 away from the golden finger, the third positioning element may be a second positioning groove 422, and when the chuck assembly 500 is connected to the lens assembly 400, the positioning protrusion 512 on the chuck 510 passes through the first positioning groove 524 on the shielding plate 520 and then is inserted into the second positioning groove 422 on the lens assembly connecting portion 420; and the second positioning groove 422 is provided with a corresponding second position-limiting groove 4221, so that the position-limiting member 5121 provided on the positioning protrusion 512 passes through the first position-limiting groove 5241 on the shielding plate 520 and then is inserted into the second position-limiting groove 4221, thereby realizing the connection between the lens assembly 400 and the claw assembly 500.

Because the claws 510 are symmetrically provided with the positioning protrusions 512, the left and right sides of the end surface of the lens assembly connecting part 420 are symmetrically provided with the second positioning grooves 422, and the two positioning protrusions 512 on the claws 510 are respectively inserted into the two corresponding second positioning grooves 422.

The lens assembly 400 further includes a positioning pin, which passes through the lens assembly body 410, the lens assembly connecting part 420, and the shielding plate 520 in sequence, and is connected to the optical fiber connector inserted into the claw 510. Specifically, the lens assembly connecting portion 420 is provided with a first positioning hole 4241, the lens assembly body 410 is provided with a second positioning hole 4122, the first positioning hole 4241 is communicated with the second positioning hole 4122, and the positioning pin can sequentially pass through the second positioning hole 4122 and the first positioning hole 4241 and extend out from the end face of the lens assembly connecting portion 420.

Further, to facilitate dispensing and fixing the positioning pin, dispensing grooves are respectively formed in the end portion of the first positioning hole 4241 and the end portion of the second positioning hole 4122, and dispensing is performed at the dispensing grooves.

In the embodiment of the present application, the positioning pins may include a first positioning pin 430 and a second positioning pin 440, and the first positioning pin 430 and the second positioning pin 440 are arranged in front of and behind each other. When the lens assembly 400 includes the first positioning pin 430 and the second positioning pin 440, the lens assembly connecting portion 420 is provided with a third positioning hole 4242, the lens assembly body 410 is provided with a fourth positioning hole 4123, the first positioning hole 4241 and the third positioning hole 4242 are arranged on the lens assembly connecting portion 420 in a left-right direction, the second positioning hole 4122 and the fourth positioning hole 4123 are arranged on the lens assembly body 410 in a left-right direction, the first positioning pin 430 sequentially passes through the first positioning hole 4241 and the second positioning hole 4122, and the second positioning pin 440 sequentially passes through the third positioning hole 4242 and the fourth positioning hole 4123.

One end of the first positioning pin 430 may abut against an end surface of the lens assembly body 410 facing the golden finger, and the other end of the first positioning pin extends out of the end surface of the lens assembly connecting part 420 facing away from the golden finger, and one end of the second positioning pin 440 may abut against an end surface of the lens assembly body 410 facing the golden finger, and the other end of the second positioning pin extends out of the end surface of the lens assembly connecting part 420 facing away from the golden finger.

The first side 5201 of the shielding plate 520 is provided with a positioning pin through hole 521 corresponding to the positioning pin, when the lens assembly 400 includes the first positioning pin 430 and the second positioning pin 440, the positioning pin through hole 521 on the shielding plate 520 includes a first positioning pin through hole 5211 and a second positioning pin through hole 5212, when the lens assembly 400 is connected to the latch assembly 500, the first positioning pin 430 extending out of the end surface of the lens assembly connecting portion 420 is inserted into the first positioning pin through hole 5211, and the second positioning pin 440 extending out of the end surface of the lens assembly connecting portion 420 is inserted into the second positioning pin through hole 5212.

Fig. 13 is an assembled cross-sectional view of a lens assembly 400 and a latch assembly 500 in a light module according to an embodiment of the present application. As shown in fig. 13, after the first positioning pin 430 and the second positioning pin 440 respectively pass through the first positioning pin through hole 5211 and the second positioning pin through hole 5212 of the shielding plate 520, the first positioning pin 430 and the second positioning pin 440 are inserted into the through holes 514 of the jaws 510 to position the optical fiber connectors inserted into the jaws 510.

The end face of the lens component connecting part 420 is also provided with a positioning boss which extends along the direction back to the golden finger; a boss through hole 523 corresponding to the positioning boss is provided on the first side 5201 of the shielding plate 520, and the positioning boss is inserted into the boss through hole 523.

The positioning bosses on the lens assembly connecting part 420 may include a first positioning boss 4231, a second positioning boss 4232, a third positioning boss 4233 and a fourth positioning boss 4234, the first positioning boss 4231 and the second positioning boss 4232 are vertically arranged and are located at the right part of the end surface of the lens assembly connecting part 420, and the third positioning hole 4242 is arranged between the first positioning boss 4231 and the second positioning boss 4232; the third positioning boss 4233 and the fourth positioning boss 4234 are vertically arranged and located at the left side part of the end surface of the lens assembly connecting part 420, and the first positioning hole 4241 is arranged between the third positioning boss 4233 and the fourth positioning boss 4234.

Thus, the boss through hole 523 on the first side 5201 of the shielding plate 520 includes a first boss through hole 5231, a second boss through hole 5232, a third boss through hole 5233 and a fourth boss through hole 5234, which correspond to each other, and the first boss through hole 5231, the second boss through hole 5232, the third boss through hole 5233 and the fourth boss through hole 5234 are used for avoiding the first positioning boss 4231, the second positioning boss 4232, the third positioning boss 4233 and the fourth positioning boss 4234 on the lens assembly 400. That is, when the lens assembly 400 is connected to the latch assembly 500, the first positioning boss 4231 of the lens assembly connecting portion 420 is inserted into the first boss through hole 5231, the second positioning boss 4232 is inserted into the second boss through hole 5232, the third positioning boss 4233 is inserted into the third boss through hole 5233, the fourth positioning boss 4234 is inserted into the fourth boss through hole 5234, and after the first positioning boss 4231, the second positioning boss 4232, the third positioning boss 4233 and the fourth positioning boss 4234 pass through the first boss through hole 5231, the second boss through hole 5232, the third boss through hole 5233 and the fourth boss through hole 5234, the first positioning boss 4231, the second positioning boss through hole 5232, the third positioning boss through hole 5233 and the fourth boss through hole 5234 are inserted into the through hole 514 of the latch 510 to contact with the.

In the embodiment of the present application, the cross-sectional shapes of the first positioning pin 430 and the second positioning pin 440 of the lens assembly 400 may be circular, so that the first positioning pin through hole 5211 and the second positioning pin through hole 5212 on the shielding plate 520 are circular holes; the cross-sectional shapes of the first positioning boss 4231, the second positioning boss 4232, the third positioning boss 4233 and the fourth positioning boss 4234 on the lens assembly body 410 may be circular, so that the first boss through hole 5231, the second boss through hole 5232, the third boss through hole 5233 and the fourth boss through hole 5234 on the shielding plate 520 are circular holes.

In the embodiment of the present application, the lens assembly body 410 may reflect light emitted from a light emitting chip disposed on the circuit board 300 to the chuck assembly 500, or reflect light transmitted from the chuck assembly 500 to a light receiving chip on the circuit board 300 via a lens device. Specifically, an accommodating cavity is disposed between the lens assembly body 410 and the circuit board 300, and the optical chip is disposed in the accommodating cavity.

Since high-speed data transmission requires a short distance between the optical chip and its driving/matching chip to shorten the connection between the chips and reduce the signal loss caused by the connection, the optical chip and its driving/matching chip are generally fixed in the accommodating cavity at the same time. Specifically, since the optical chip may be a light emitting chip or a light receiving chip, when the optical chip is a light emitting chip, the accommodating cavity not only accommodates the light emitting chip, but also accommodates a driving chip that is matched with the light emitting chip, and the driving chip that is matched with the light emitting chip and the light emitting chip are arranged in a short distance. When the optical chip is a light receiving chip, the accommodating cavity not only accommodates the light receiving chip, but also accommodates a transimpedance amplification chip matched with the light receiving chip, and the transimpedance amplification chip matched with the light receiving chip and the light receiving chip are arranged in a close range. The above is the case of one optical chip.

When the accommodating cavity comprises two optical chips, namely one optical chip is a light emitting chip and the other optical chip is a light receiving chip, the accommodating cavity can accommodate the light emitting chip and a driving chip matched with the light emitting chip, and the driving chip matched with the light emitting chip and the light emitting chip are arranged in a close range; the optical receiver chip and the transimpedance amplifier chip matched with the optical receiver chip can be contained, and the transimpedance amplifier chip matched with the optical receiver chip and the optical receiver chip are arranged in a short distance. The specific situation can be set according to the actual concrete, and the application is not limited.

The optical chip is used for generating signal light or receiving signal light, and the lens assembly body 410 is disposed on the circuit board 300 and covers the optical chip. Specifically, the lens assembly body 410 is disposed on a side of the circuit board 300 away from the gold finger, and disposed above the optical chip in a covering manner, and the lens assembly body 410 and the circuit board 300 form a cavity for wrapping the optical chips such as the light emitting chip and the light receiving chip. Light emitted from the light emitting chip is reflected by the lens assembly body 410 and enters the chuck assembly 500, and light from the chuck assembly 500 is reflected by the lens assembly body 410 and enters the light receiving chip. Lens assembly body 410 not only acts to seal the optical chip, but also to establish optical connection between the optical chip and jaw assembly 500.

The lens assembly body 410 establishes optical connection between the optical chip and the collet assembly 500, and functions to change the propagation direction of an optical signal are attached to the lens assembly body 410. Specifically, when the signal light transmitted by the latch assembly 500 enters the lens assembly body 410, the signal light is reflected to change the propagation direction of the optical signal, so that the optical signal enters the light receiving chip of the optical chip; when the signal light emitted from the light emitting chip of the optical chip enters the lens assembly body 410, the signal light is reflected to change the propagation direction of the optical signal, so that the optical signal is transmitted to the chuck assembly 500.

In the embodiment of the present application, the end surface of the lens assembly connecting portion 420 is provided with a second lens matrix 421, and the second lens matrix 421 may be formed by arranging a plurality of lens protrusions. The second lens array 421 is used to focus the signal light generated by the light emitting chip reflected by the reflective surface of the lens assembly body 410 and collimate the signal light input through the external optical fiber. In this embodiment, set up logical light groove 4211 on the terminal surface of lens subassembly connecting portion 420, set up second lens matrix 421 on the bottom surface of logical light groove 4211, be convenient for avoid scraping second lens matrix 421 in the assembling process, guarantee second lens matrix 421's safety in utilization.

In order to make the light emitted from the second lens matrix 421 of the lens assembly body 410 enter the claw 510, a light passing hole 522 is provided on the first side 5201 of the shielding plate 520, and the light passing hole 522 is used for passing through the signal light transmitted between the external optical fiber and the lens assembly 400. Optionally, the light passing hole 522 is disposed corresponding to the light passing groove 4211.

The light passing hole 522 formed on the first side 5201 may be a through hole, or two through holes arranged side by side, such as a first light passing hole 5221 and a second light passing hole 5222. Specifically, the first light through hole 5221 and the second light through hole 5222 are disposed on the first side surface 5201 in a left-right direction, and the first light through hole 5221 and the second light through hole 5222 are disposed between the first positioning pin through hole 5211 and the second positioning pin through hole 5212. One side of each of the first light passing hole 5221 and the second light passing hole 5222 is communicated with the light passing groove 4211, and the other side thereof is communicated with the through holes 514 of the jaws 510, so as to avoid the light emitting path of the lens assembly 400 and ensure that the light path of the lens assembly 400 is connected with the light path of the external optical fiber connector. Light emitted by the light emitting chip is emitted out through the second lens matrix 421 of the lens assembly connecting part 420, enters the external optical fiber connector of the claw 510 through the first light through hole 5221 and the second light through hole 5222 on the shielding plate 520, and then enters the external optical fiber, so that light emission is realized; light from the external optical fiber connector passes through the first light passing hole 5221 and the second light passing hole 5222 on the shielding plate 520 via the claws 510, then enters the second lens matrix 421 of the lens assembly connecting part 420, and then is reflected into the light receiving chip, so that the light is received.

In the embodiment of the present application, the assembly process of the lens assembly 400 and the chuck assembly 500 is as follows: first, the lens assembly 400 is fixed to one end of the circuit board 300, and the jaw assembly 500 is assembled; then, the first positioning pin 430 and the second positioning pin 440 are respectively inserted into the first positioning pin through hole 5211 and the second positioning pin through hole 5212 of the shielding plate 520, and then the jaw assembly 500 is moved from left to right until the positioning protrusion 512 on the jaw assembly 500 is inserted into the second positioning slot 422 of the lens assembly connecting part 420, and the first positioning boss 4231, the second positioning boss 4232, the third positioning boss 4233 and the fourth positioning boss 4234 on the lens assembly connecting part 420 are respectively inserted into the corresponding first boss through hole 5231, the second boss through hole 5232, the third boss through hole 5233 and the fourth boss through hole 5234, so that the fixed connection between the jaw assembly 500 and the lens assembly 400 is realized.

Fig. 14 is an assembly schematic diagram of a middle lower housing 202, a circuit board 300, a lens assembly 400, and a latch assembly 500 of an optical module provided in the embodiment of the present application, and fig. 15 is a cross-sectional view of an optical module provided in the embodiment of the present application. As shown in fig. 14 and 15, the latch assembly 500 is disposed in the optical module optical port 205, and the lens assembly 400 is disposed at an end of the circuit board 300 close to the optical module optical port 205. When the lens assembly 400 is coupled with an external optical fiber, the lens assembly 400 can be directly coupled with the external optical fiber through the claw assembly 500, so that the optical signal between the lens assembly 400 and the external optical fiber can be directly transmitted, an optical fiber ribbon required for transmitting the optical signal between the lens assembly 400 and the external optical fiber is saved, the space for arranging the optical fiber ribbon in the optical module is reduced, and the further development of the optical module is facilitated. Optionally, the top and bottom of the latch assembly 500 are fixedly connected to the upper housing 201 and the lower housing 202 of the optical module.

In the embodiment of the present application, the lens assembly 400 is disposed on the front surface of the circuit board 300, that is, the lens assembly 400 is located between the circuit board 300 and the upper housing 201, and then the top of the jaw assembly 500 is connected to the upper housing 201 and the bottom is connected to the lower housing 202. In the embodiment of the present application, the lens assembly 400 may be disposed on the opposite side of the circuit board 300, that is, the lens assembly 400 is located between the circuit board 300 and the lower housing 202, and then the top of the jaw assembly 500 is connected to the lower housing 202 and the bottom is connected to the upper housing 201.

Fig. 16 is a schematic structural diagram of a pawl assembly 500 in an optical module according to an embodiment of the present disclosure, fig. 17 is a schematic structural diagram of a lower housing 202 in an optical module according to an embodiment of the present disclosure, and fig. 18 is a schematic partial structural diagram of another angle of the lower housing 202 in an optical module according to an embodiment of the present disclosure. As shown in fig. 16, 17, and 18, a boss 515 is provided on the outer circumference of the latch 510 of the latch assembly 500, and the boss 515 is close to an end surface of the latch 510 facing away from the optical module light port 205. The bottom surface of the claw 510 is further provided with a second limiting member, which may be a first limiting boss 5151, and the first limiting boss 5151 is connected to the boss 515. A first limiting part is disposed at a position of the lower housing 202 close to the optical module optical port 205, the first limiting part may be a first limiting groove 2023, when the bottom of the claw assembly 500 is disposed on the lower housing 202, the boss 515 and the first limiting boss 5151 on the claw 510 are embedded in the first limiting groove 2023 on the lower housing 202, the left side surface of the first limiting boss 5151 abuts against the left inner wall of the first limiting groove 2023, so as to limit the claw 510 from left to right, and prevent the claw 510 from moving from left to right on the bottom surface of the lower housing 202.

Fig. 19 is a partial cross-sectional view illustrating an assembly of a latch assembly 500 and a lower housing 202 in an optical module according to an embodiment of the present disclosure. As shown in fig. 19, in order to further fix the clamping jaw 510, a second positioning element is further disposed on the bottom surface of the clamping jaw 510, the second positioning element may be a positioning pillar 513, and the positioning pillar 513 is located between the boss 515 and the conductive rubber strip 530; a first positioning member is disposed in the first limiting groove 2023, and the first positioning member may be a positioning hole, when the clamping jaw 510 is fixed on the lower casing 202, the positioning column 513 on the clamping jaw 510 is inserted into the positioning hole on the lower casing 202, and the positioning column 513 is connected to the positioning hole in a matching manner to realize the relative fixation between the clamping jaw assembly 500 and the lower casing 202.

In this embodiment, a positioning hole may be further disposed on the bottom surface of the clamping jaw 510, a positioning column is disposed at a corresponding position of the lower housing 202, and the clamping jaw assembly 500 is fixedly connected to the lower housing 202 through the positioning column and the positioning hole. Further, in the embodiment of the present application, the claw assembly 500 and the upper housing 201 may also be fixedly connected in a manner of a positioning hole and a positioning column.

In the embodiment of the present application, the positioning posts 513 are symmetrically disposed on the bottom surface of the clamping jaw 510 from left to right, so that the fifth positioning hole 2021 and the sixth positioning hole 2022 are disposed at corresponding positions of the lower housing 202, and the positioning posts 513 on the clamping jaw 510 are respectively inserted into the fifth positioning hole 2021 and the sixth positioning hole 2022, so as to achieve the fixed connection between the clamping jaw 510 and the lower housing 202.

After the positioning posts 513 on the clamping jaws 510 are inserted into the fifth positioning holes 2021 and the sixth positioning holes 2022 of the lower housing 202, the positioning posts 513 can be fixed in the fifth positioning holes 2021 and the sixth positioning holes 2022 by dispensing, so as to increase the mounting stability between the clamping jaws 510 and the lower housing 202.

In this embodiment, the bottom surface of the claw 510 and the first limit groove 2023 of the lower housing 202 may also be fixed by glue, and in order to add glue to the joint between the bottom surface of the claw 510 and the first limit groove 2023, two opposite sidewalls of the lower housing 202 may be respectively provided with a glue dispensing inclined surface (the first glue dispensing inclined surface 2024 and the second glue dispensing inclined surface 2025), the first glue dispensing inclined surface 2024 and the second glue dispensing inclined surface 2025 are both inclined from the top surface of the lower housing 202 toward the bottom surface, and a gap is left between the side surface of the claw 510 and the inner sidewall of the lower housing 202, so that glue can flow into the first limit groove 2023 of the lower housing 202 along the sidewall of the lower housing 202 through the first glue dispensing inclined surface 2024 and the second glue dispensing inclined surface 2025 to add glue to the lower housing 202 for fixation.

Fig. 20 is another angle structural schematic diagram of a latch assembly 500 in an optical module according to an embodiment of the present disclosure, fig. 21 is a structural schematic diagram of an upper housing 201 in an optical module according to an embodiment of the present disclosure, and fig. 22 is a partial cross-sectional view of an optical module according to an embodiment of the present disclosure. As shown in fig. 20, 21 and 22, a second limit boss 5152 is arranged on the top surface of the jaw 510, and the second limit boss 5152 is connected with the boss 515; in order to facilitate the connection between the latch assembly 500 and the upper housing 201, a second limiting groove 2013 is disposed at a position of the upper housing 201 close to the optical module optical port 205. When the top of the jaw assembly 500 is disposed on the upper housing 201, the boss 515 and the second limit boss 5152 on the jaw 510 are embedded in the second limit groove 2013 on the upper housing 201.

Further, clamping grooves 2014 are formed in two opposite side walls of the upper shell 201, the boss 515 is clamped in the clamping groove 2014, the end face, facing the optical module optical port 205, of the boss 515 is abutted against the clamping groove 2014, the clamping jaw 510 is limited in the left-right direction, and the clamping jaw 510 is prevented from moving left and right on the inner side face of the upper shell 201.

In this embodiment, when the jaw assembly 500 and the lens assembly 400 are installed, the jaw assembly 500 needs to be moved from left to right, and at this time, the displacement of the lens assembly 400 may be caused in the installation process, so a limiting protrusion 2011 may be disposed on the inner side of the upper housing 201, a certain gap is formed between the limiting protrusion 2011 and the end surface of the lens assembly body 410 facing the golden finger, when the lens assembly 400 is displaced rightward, the end surface of the lens assembly body 410 facing the golden finger may abut against the limiting protrusion 2011 to abut against the end of the lens assembly body 410, and then the limiting protrusion 2011 may support the lens assembly 400 at the end of the lens assembly body 410, so as to prevent the lens assembly 400 from being forced to move rightward continuously and causing falling off.

In the embodiment of the present application, the lens assembly 400 may be further disposed on the opposite side of the circuit board 300, that is, the lens assembly 400 is located between the circuit board 300 and the lower housing 202, and then the inner side of the lower housing 202 is provided with a limiting protrusion, which abuts against the end of the lens assembly body 410.

Fig. 23 is a partial cross-sectional view of another angle in an optical module according to an embodiment of the present application. As shown in fig. 23, a notch 2012 is further disposed on a limiting protrusion 2011 disposed inside the upper housing 201, and the notch 2012 is disposed at a side of the limiting protrusion 2011. Because the lens assembly connecting part 420 is provided with the first positioning hole 4241 which penetrates through the lens assembly connecting part, the lens assembly body 410 is provided with the second positioning hole 4122 which penetrates through the lens assembly connecting part, the positioning pin sequentially penetrates through the second positioning hole 4122 and the first positioning hole 4241, a gap is formed between one end of the positioning pin and the end face, facing the golden finger, of the lens assembly body 410, and the other end of the positioning pin extends out of the end face, facing away from the golden finger, of the lens assembly connecting part 420, the notch 2012 formed in the limiting protrusion 2011 can avoid the positioning pin, when the lens assembly 400 moves rightwards, the notch 2012 in the limiting protrusion 2011 can support the end part of the positioning pin, and.

In this embodiment, the lens assembly 400 has the first positioning pin 430 and the second positioning pin 440 penetrating therethrough, and the first positioning pin 430 and the second positioning pin 440 may be symmetrical to each other about the left and right central axes of the lens assembly 400, so that the limiting protrusion 2011 is provided with two notches 2012, and the two notches 2012 may be symmetrical to each other about the left and right central axes of the upper housing 201, so as to avoid the first positioning pin 430 and the second positioning pin 440 through the two notches 2012.

In the optical module that this application embodiment provided, light-emitting chip and light-receiving chip set up on the circuit board, and the lens subassembly cover is established on light-emitting chip and light-receiving chip and is set up the tip that is close to optical module light mouth at the circuit board, and the lens subassembly is used for changing the propagation direction that light-emitting chip transmitted signal light and light-receiving chip waited to receive signal light. In order to realize the direct transmission of the lens assembly and the external optical fiber, a jaw assembly is arranged between the lens assembly and the external optical fiber, the jaw assembly is arranged at an optical port of the optical module, the direct lens assembly at one end and the other end are used for connecting the external optical fiber, the direct connection of the lens assembly and the external optical fiber is realized through the jaw assembly, further, the direct transmission of optical signals between the lens assembly and the external optical fiber is realized, the optical fiber ribbon required by the transmission of the optical signals between the lens assembly and the external optical fiber is saved, the space for arranging the optical fiber ribbon in the optical module is reduced, the reliability risk caused by the damage of the optical fiber.

It should be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of other like elements in a circuit structure, article or device comprising the element.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A light module, comprising:

an upper housing;

the lower shell is covered on the upper shell;

2. The optical module of claim 1, wherein the first position-limiting member is a first position-limiting groove, and the second position-limiting member is a first position-limiting projection; bosses are arranged on the periphery of the clamping jaw, the first limiting bosses are arranged on the side surfaces, facing the lower shell, of the clamping jaw, and the first limiting bosses are connected with the bosses; the first limiting boss and the boss are embedded in the first limiting groove.

3. The optical module as claimed in claim 2, wherein the first positioning member on the lower housing is a positioning hole, the second positioning member is a positioning post, the positioning hole is a dispensing hole, and the positioning post is fixedly connected to the positioning hole by dispensing.

4. The optical module according to claim 2, wherein two opposite side walls of the lower housing are respectively provided with a dispensing inclined surface, and the dispensing inclined surfaces are communicated with the first limiting groove.

5. The optical module according to claim 2, wherein a second limit boss is arranged on a side surface of the claw facing the upper housing, and the second limit boss is connected with the boss; the side surface of the upper shell is provided with a second limiting groove, and the second limiting boss and the boss are embedded in the second limiting groove.

6. The optical module according to claim 2, wherein two opposite side walls of the upper housing are provided with a slot, and the boss is inserted into the slot.

7. The optical module according to claim 1, wherein a limiting protrusion is disposed on an inner side surface of the upper housing, the limiting protrusion extends toward the circuit board, and a gap is formed between the limiting protrusion and an end surface of the lens assembly facing away from the optical port of the optical module.

8. The optical module according to claim 7, wherein a positioning pin is disposed in the lens assembly, and one end of the positioning pin extends out of an end surface of the lens assembly facing away from the optical port of the optical module; the limiting bulge is provided with a notch, and a certain gap is formed between the notch and the end face of the positioning needle.

9. The optical module of claim 3, wherein the latch assembly further comprises a conductive rubber strip, the conductive rubber strip is sleeved around the shielding plate, and the conductive rubber strip abuts against the upper housing and the lower housing respectively.

10. The optical module of claim 9, wherein the positioning posts are disposed between the bosses and the conductive rubber strips.