CN214623120U - Optical module - Google Patents

Abstract

The application provides an optical module, including: a housing and a protective sleeve; the housing includes: an upper housing; the lower shell is covered with the upper shell to form a wrapping cavity; one end of the wrapping cavity is provided with a light port for connecting an external optical fiber. The handle, with parcel cavity outer wall connection the protective sheath wrap up in the outside of casing is close to light mouth one end. The protective sheath is provided with the hole of stepping down for the location of handle. The heat conductivity coefficient of the protective sleeve is lower than that of the shell, the protective sleeve is arranged on the surface of the shell, so that the optical module is protected at the exposed part of the upper computer, the influence on user experience caused by touch in the using process is avoided, and the use comfort of a user is improved.

Description

Optical module

Technical Field

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

Background

With the development of new services and application modes such as cloud computing, mobile internet, video and the like, the development and progress of the optical communication technology become increasingly important. In the optical communication technology, an optical module is a tool for realizing the interconversion of optical signals and is one of key devices in optical communication equipment, and the transmission rate of the optical module is continuously increased along with the development requirement of the optical communication technology.

Along with the miniaturization of devices, all photoelectric devices in the optical module are distributed more tightly, the occupied space is small, and the heat emitted by the local part of the optical module is more, so that the surface temperature of the optical module can reach more than 60 degrees. In the operation process of the equipment, one end of the optical module is exposed outside, so that the optical module is easy to touch in the use process, the user experience is influenced, and the use comfort of a user is poor.

SUMMERY OF THE UTILITY MODEL

The application provides an optical module to reduce the touching temperature, improve user experience travelling comfort.

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

the embodiment of the application discloses optical module, its characterized in that includes: a housing and a protective sleeve;

the housing includes: an upper housing;

the lower shell is covered with the upper shell to form a wrapping cavity; one end of the wrapping cavity is provided with a light port for connecting an external optical fiber;

the handle is connected with the outer wall of the wrapping cavity;

the protective sleeve is wrapped on the outer side of the shell and is close to one end of the light port; the heat conductivity coefficient of the protective sleeve is lower than that of the shell;

the protective sheath is provided with the hole of stepping down for the location of handle.

Compared with the prior art, the beneficial effect of this application is:

the application provides an optical module, including: a housing and a protective sleeve; the housing includes: an upper housing; the lower shell is covered with the upper shell to form a wrapping cavity; one end of the wrapping cavity is provided with a light port for connecting an external optical fiber. The handle, with parcel cavity outer wall connection the protective sheath wrap up in the outside of casing is close to light mouth one end. The protective sheath is provided with the hole of stepping down for the location of handle. The heat conductivity coefficient of the protective sleeve is lower than that of the shell, the protective sleeve is arranged on the surface of the shell, so that the optical module is protected at the exposed part of the upper computer, the influence on user experience caused by touch in the using process is avoided, and the use comfort of a user is improved.

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 diagram of an optical network unit;

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

FIG. 4 is a first exploded view of an optical module according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an exploded structure of a second optical module according to an embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of a portion of a light module according to an embodiment of the present disclosure;

fig. 7 is a first schematic structural diagram of a protective sheath according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a protective sheath according to an embodiment of the present application.

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 signals, grounding and the like; the optical module realizes optical connection with external optical fibers through an optical interface, the external optical fibers are connected in various ways, and various optical fiber connector types are derived; the method is characterized in that the electric connection is realized by using a golden finger at an electric interface, which becomes the mainstream connection mode of the optical module industry, and on the basis, the definition of pins on the golden finger forms various industry protocols/specifications; the optical connection mode realized by adopting the optical interface and the optical fiber connector becomes the mainstream connection mode of the optical module industry, on the basis, the optical fiber connector also forms various industry standards, such as an LC interface, an SC interface, an MPO interface and the like, the optical interface of the optical module also makes adaptive structural design aiming at the optical fiber connector, and the optical fiber adapters arranged at the optical interface are various.

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 the 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 interface of the optical module 200 is externally accessed to the optical fiber 101, and establishes bidirectional optical signal connection with the optical fiber 101; the electrical interface of the optical module 200 is externally connected to the optical network terminal 100, and establishes a bidirectional electrical signal connection with the optical network terminal 100; bidirectional interconversion of optical signals and electric signals is realized inside the optical module, so that information connection is established between the optical fiber and the optical network terminal; specifically, the optical signal from the optical fiber 101 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 101.

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 has a network cable interface 104, which is used for accessing the network cable 103 and establishing a bidirectional electrical signal connection (generally, an electrical signal of an ethernet protocol, which is different from an electrical signal used by an optical module in protocol/type) with the network cable 103; the optical module 200 is connected to the network cable 103 through 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. 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 a bidirectional signal transmission channel is established between the remote server and the local information processing equipment through the optical fiber, the optical module, the optical network terminal and a network cable.

Common local information processing apparatuses include routers, home switches, electronic computers, and the like; common optical network terminals include an optical network unit ONU, an optical line terminal OLT, a data center server, a data center switch, 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 electrical connector is arranged in the cage 106 and used for accessing an electrical interface (such as a gold finger) of the optical module; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a projection such as a fin that increases a heat radiation area.

The optical module 200 is inserted into an optical network terminal, the electrical interface of the optical module is inserted into the electrical connector inside the cage 106, and the optical interface 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.

To facilitate the detachment and installation, one end of the optical module 200 is inserted into the cage, and the other end is exposed outside the optical network terminal 100.

Fig. 3 is a schematic diagram of an optical module according to an embodiment of the present disclosure, and fig. 4 is a schematic diagram of an optical module according to an embodiment of the present disclosure; fig. 5 is a schematic view of an exploded structure of a light module according to an embodiment of the present application. As shown in fig. 3, 4 and 5, an optical module 200 provided in an embodiment of the present application includes a housing, an unlocking member 203, a handle 500, a dust plug 600, a circuit board 300, and an optical transceiver sub-module 400.

The housing includes: shell plate 206, upper shell 201, lower shell 202; 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 may be two ends (204, 205) in the same direction, or two openings in different directions; 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 with the optical transceiver sub-assembly 400 inside the optical module; the photoelectric devices such as the circuit board 300 and the optical transceiver sub-assembly 400 are positioned in the packaging cavity.

The assembly mode of combining the upper shell and the lower shell is adopted, so that the circuit board 300, the optical transceiver sub-module 400 and other devices can be conveniently installed in the shells, and the outermost packaging protection shell of the module is formed by the upper shell and the lower shell; 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 component can be pulled to enable the unlocking component to move relatively on the surface of the outer wall; the optical module is inserted into a cage of the upper computer, and the optical module is fixed in the cage of the upper computer by a clamping component of the unlocking component; by pulling the unlocking component, the clamping component of the unlocking component moves along with the unlocking component, so that the connection relation between the clamping component and the upper computer is changed, the clamping relation 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.

In this embodiment, the shell 206 is fixed on the upper housing 201 by screws, the handle 500 is positioned between the shell 206 and the upper housing 201 and rotatably connected to the upper housing 201, the unlocking member 203 is slidably connected to the shell 206, the handle 500 is abutted against the unlocking member 203 for positioning, and a connecting portion is arranged at one end of the unlocking member 203 and connected to the handle 500. The clamping jaws are arranged in the upper shell 201, the elastic sleeve 207 is fixed outside a wrapping cavity formed by covering the upper shell 201 and the lower shell 202, and the dustproof plug 600 is inserted in the lower shell 202. The elastic sleeve 207 is provided with a clamping component which is connected with the upper computer in a clamping way.

Further, the handle 500 includes: and a fixing portion 501 connected to the connecting portion for connecting the handle 500 and the unlocking member 203. The sliding connection portion 502 is disposed outside the lower housing 202 and moves relative to the outer wall of the lower housing 202, so as to facilitate pulling the unlocking member.

In the assembly process of the embodiment of the application, the upper shell 201 and the lower shell 202 are assembled and connected, and the unlocking component 203 is connected with the upper shell 201 in a positioning manner; the fixing portion 501 of the handle 500 is connected to the connecting portion and is positioned on the outer wall of the lower housing 202 by the sliding portion 502. Then, the shell plate 206 is fixedly connected to the upper case 201. The unlocking member 203 is slidably disposed in a slide groove formed by combining the casing plate 206 and the upper case 201. The unlocking member 203 is provided with a spring chute to accommodate a spring. Go up casing 201 and set up the spring fixed column, be located the spring spout, the spring is in the spring spout by compression state. 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 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.

The optical transceiving sub-module comprises an optical transmitting device and an optical receiving device which are respectively used for realizing the transmission of optical signals and the receiving of the optical signals. The light emitting device generally comprises a light emitter, a lens and a light detector, wherein the lens and the light detector are respectively positioned on different sides of the light emitter, light beams are respectively emitted from the front side and the back side of the light emitter, and the lens is used for converging the light beams emitted from the front side of the light emitter so that the light beams emitted from the light emitter are converging light to be conveniently coupled to an external optical fiber; the optical detector is used for receiving the light beam emitted by the reverse side of the optical emitter so as to detect the optical power of the optical emitter. Specifically, light emitted by the light emitter enters the optical fiber after being converged by the lens, and the light detector detects the light emitting power of the light emitter so as to ensure the constancy of the light emitting power of the light emitter. As shown in fig. 2, for the convenience of detachment and installation, one end of the optical module 200 close to the electrical port 204 is inserted into the optical network terminal, and is connected to the electrical connector inside the cage 106, and one end close to the optical port 205 is exposed outside the optical network terminal 100. Because a large number of photoelectric devices are integrated in the optical module 200, a large amount of heat is generated in the operation process, and the heat is dissipated through the upper shell and the lower shell. The optical module 200 is connected to the optical network terminal 100, and the upper housing 201 is a main heat dissipation member near the heat sink 107.

FIG. 6 is a schematic cross-sectional view of a portion of a light module according to an embodiment of the present disclosure; fig. 7 is a schematic structural diagram of a protective sheath according to an embodiment of the present application. Fig. 8 is a schematic structural diagram of a protective sheath according to an embodiment of the present application. Figures 7 and 8 show a protective sleeve from different angles in embodiments of the present application.

As shown in fig. 6, 7, and 8, in order to avoid that one end of the optical module is exposed, and a touch is likely to occur during a use process, the optical module provided in the embodiment of the present application further includes: the protective sleeve 700 is sleeved outside the cavity formed by the upper housing 201 and the lower housing 202 and is close to the light opening 205. Further, the protective sleeve 700 wraps the shell 206, the outer sides of the upper shell 201 and the lower shell 202, and is used for isolating heat generated inside the optical module 200, so that the situation that the shell is exposed near the optical port 205 to cause high temperature touch and influence on user experience is avoided.

Further, the protective sleeve 700 is in interference connection with the housing. Protective sheath 700 is plastics or gluey class material, is connected with the casing interference fit for protective sheath 700 is fixed in the casing outside, avoids casing removal in-process protective sheath 700 and casing to take place relative movement, produces the dislocation.

The thermal conductivity of sheath is less than the thermal conductivity of casing, has thermal-insulated effect, improves user's comfort level.

Further, in some embodiments of the present application, the protective sheath 700 is a hollow cuboid structure with two open ends. The protective case 700 includes a first side panel 710, a second side panel 720, a third side panel 730, and a fourth side panel 740 connected end to end in sequence, wherein the third side panel 730 is located on the opposite side of the first side panel 710, and the second side panel 720 is located on the opposite side of the fourth side panel 740.

The first side plate 710 is arranged on the outer side of the shell plate 206, the inner wall of the first side plate 710 is provided with a plurality of first ribs 711, and the first ribs 711 are connected with the shell plate 206, so that the first side plate 710 is connected with the shell plate 206 only through the first ribs 711, and gaps are formed at other positions, thereby facilitating heat dissipation.

The first side plate 710 is provided with a plurality of first heat dissipation holes 712 for dissipating heat. The material of the protective cover 700 has poor thermal conductivity, and the first heat dissipation hole 712 facilitates the heat transfer from the housing to the upper portion of the upper housing 201, thereby facilitating the heat dissipation of the optical module.

The first ribs 711 are symmetrically disposed at two sides of the first heat dissipation hole 712, so that the first heat dissipation hole 712 is separated from the housing or the shell 206, thereby facilitating air circulation between the housing and the first side plate 710 and increasing the cooling effect. The first ribs 711 protrude inward with respect to the inner wall of the first side plate 710.

Similarly, the second side plate 720 is disposed at the adjacent side of the first side plate 710, the inner wall of the second side plate 720 is provided with a plurality of second ribs 721, and the second ribs 721 are connected with the side wall of the housing, so that the second side plate 720 and the side wall of the housing are connected through the second ribs 721, and other portions form a gap, thereby facilitating heat dissipation. The second rib 721 is inwardly protruded with respect to the inner wall of the second side plate 720.

The second side plate 720 is provided with a plurality of second heat dissipation holes 722 for dissipating heat. The material of the protective cover 700 has poor thermal conductivity, and the second heat dissipation holes 722 are arranged to facilitate the transmission of heat from the housing to the outside, thereby facilitating the heat dissipation of the optical module.

The second ribs 721 are symmetrically disposed on two sides of the second heat dissipating hole 722, so that the second heat dissipating hole 722 is separated from the outer wall of the housing, thereby facilitating air circulation between the housing and the second side plate 720 and increasing the cooling effect.

The fourth side plate 740 is arranged on the opposite side of the second side plate 720, the inner wall of the fourth side plate 740 is provided with a plurality of fourth ribs 741, and the fourth ribs 741 are connected with the side wall of the casing, so that the fourth side plate 740 and the side wall of the casing are connected through the fourth ribs 741, and gaps are formed at other positions, so that heat dissipation is facilitated.

The fourth side plate 740 is provided with a plurality of fourth heat dissipation holes 742 for heat dissipation. The material of the protective cover 700 has poor thermal conductivity, and the fourth heat dissipation hole 742 facilitates the transfer of heat from the housing to the outside, thereby facilitating the heat dissipation of the optical module.

The fourth ribs 741 are symmetrically disposed on two sides of the fourth heat dissipation hole 742, so that the fourth heat dissipation hole 742 is separated from the outer wall of the housing, which facilitates air circulation between the housing and the fourth side plate 740, and increases the cooling effect.

The third side plate 730 is disposed on the opposite side of the first side plate 710 and connected to the lower housing 202. The third panel 730 includes: the positioning portion 731 is provided near the optical port 205 and used for positioning the sliding portion 502. The outer wall of the third side plate 730 is provided with a plurality of third convex ribs 732 which are connected with the upper computer, so that the contact area between the outer wall of the third side plate 730 and the upper computer is reduced, and the reduction of heat transmission of the shell 202 to the upper computer through the lower shell is facilitated. Meanwhile, the sliding part 502 serves as a part for pulling the unlocking component to release the engagement relation between the optical module and the upper computer, and is a main part of the optical module which needs manual operation after operation, and the third side plate 730 is arranged to prevent a person from directly contacting the shell in the operation process. Because of the casing is the alloy material, heat-conduction efficiency is high, and protective sheath 700 is for wrapping up in the casing outside, and the heat transferability between casing and the protective sheath is poor, improves user experience.

The inner wall of the third side plate 730 is further provided with a plurality of secondary convex ribs which are connected with the outer wall of the lower shell, so that the third side plate 730 is connected with the side wall of the shell through the secondary convex ribs, and other parts form gaps, thereby facilitating the emission of heat.

Further, in some embodiments provided herein, in order to prevent the protective cover 700 from affecting the main heat dissipation of the heat source inside the optical module, the optical transceiver sub-assembly 400 is not disposed in the shadow of the protective cover 700 on the upper housing.

Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.

It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 present disclosure. 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 (10)

1. A light module, comprising: a housing and a protective sleeve;

the housing includes: an upper housing;

the lower shell is covered with the upper shell to form a wrapping cavity; one end of the wrapping cavity is provided with a light port for connecting an external optical fiber;

the handle is connected with the outer wall of the wrapping cavity;

the protective sleeve is wrapped on the outer side of the shell and is close to one end of the light port; the heat conductivity coefficient of the protective sleeve is lower than that of the shell;

the protective sheath is provided with the hole of stepping down for the location of handle.

2. The optical module of claim 1, wherein the protective sleeve is in an interference connection with the housing.

3. The optical module of claim 1, wherein the protective sleeve has two opposite opening ends for the housing to pass through, and the protective sleeve is sleeved on one end of the housing near the optical port.

4. The light module of claim 1, wherein the protective sheath comprises: the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected end to end;

the first side plate is connected with the upper shell, and the third side plate is connected with the lower shell;

the inner wall of the first side plate is provided with at least one first convex rib, and the first convex rib is in interference connection with the upper shell.

5. The optical module according to claim 4, wherein the first side plate further comprises at least one first heat dissipation hole, and the first ribs are disposed on two sides of the heat dissipation hole.

6. The optical module according to claim 4, wherein at least one second rib is arranged on the inner wall of the second side plate and is in interference connection with the upper shell; the second side plate is also provided with at least one second vent hole.

7. The optical module according to claim 4, wherein at least one fourth rib is arranged on the inner wall of the fourth side plate and is in interference connection with the upper shell; the fourth side plate is also provided with at least one fourth ventilation hole.

8. The optical module according to claim 4, wherein the outer wall of the third side plate is provided with a plurality of third ribs.

9. The light module of claim 8, wherein the housing further comprises: the shell plate is arranged on the outer side of the wrapping cavity and fixedly connected with the upper shell;

the unlocking component is arranged between the shell plate and the upper shell, and one end of the unlocking component is exposed on one side of the shell plate close to the light port;

the handle includes: a fixing portion connected to the unlocking member; and the sliding connection part is arranged outside the lower shell and is in sliding connection with the lower shell.

10. The optical module of claim 1, wherein the protective sheath is a plastic material.

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