An optical module

Abstract

The optical module disclosed herein includes a first fiber optic adapter and a second fiber optic adapter. The inner wall of the upper housing of the optical module has a second mating protrusion, a second mating groove, and a second mating surface; the inner wall of the lower housing has a first mating protrusion, a first mating groove, and a first mating surface. The bottom surface of the first fiber optic adapter has a first limiting groove, a first limiting protrusion, and a first limiting surface. The top surface of the first fiber optic adapter has a second limiting groove, a second limiting protrusion, and a second limiting surface. The first limiting groove connects to the first mating protrusion, the first limiting protrusion connects to the first mating groove, and the first limiting surface connects to the first mating surface, thus connecting the bottom surface of the first fiber optic adapter to the lower housing and the top surface to the upper housing. The inner wall of the upper housing forms a downwardly extending hollow limiting post, and the inner wall of the lower housing forms a limiting through hole. The limiting through hole penetrates the inner wall of the lower housing and is inserted into the hollow limiting post, thus connecting the lower housing and the upper housing.

Description

Technical Field

[0001] This disclosure relates to the field of optical communication technology, and in particular to an optical module. Background Technology

[0002] With the development of new business and application models such as cloud computing, mobile internet, and video, advancements in optical communication technology have become increasingly important. In optical communication technology, the optical module, as one of the key components in optical communication equipment, enables photoelectric signal conversion; and in the development of optical communication technology, the data transmission rate of optical modules is required to continuously improve. Utility Model Content

[0003] In some embodiments, an optical module is provided, which provides a dual-optical-port assembly structure and provides a transmission rate.

[0004] In some embodiments, an optical module is provided, comprising:

[0005] The upper shell has a second mating protrusion, a second mating groove, and a second mating surface formed on its inner wall; the inner wall of the upper shell also has a hollow limiting post extending downward.

[0006] The lower housing, together with the upper housing, forms a first receiving cavity and a second receiving cavity. The inner wall of the lower housing has a first mating protrusion, a first mating groove, and a first mating surface. The inner wall of the lower housing has a limiting through hole that penetrates the inner wall of the lower housing. The limiting through hole is inserted into and connected to the hollow limiting post, thereby connecting the lower housing and the upper housing.

[0007] A first fiber optic adapter, disposed within the first receiving cavity and located on one side of the hollow limiting post; comprising:

[0008] The first limiting groove is located on the surface facing the lower housing and is connected to the first mating protrusion;

[0009] The first limiting protrusion is located on the surface facing the lower housing and is connected to the first mating groove;

[0010] The first limiting surface is located on the surface facing the lower housing and is connected to the first mating surface;

[0011] The second limiting groove is located on the surface facing the upper housing and is connected to the second mating protrusion;

[0012] The second limiting protrusion is located on the surface facing the upper housing and is connected to the second mating groove;

[0013] The second limiting surface is located on the surface facing the upper housing and is connected to the second mating surface;

[0014] The second fiber optic adapter is disposed in the second receiving cavity, arranged side by side with the first fiber optic adapter, and located on the other side of the hollow limiting post.

[0015] The above technical solution has the following advantages or beneficial effects: The optical module includes an upper housing, a lower housing, a first fiber optic adapter, and a second fiber optic adapter. The upper housing and the lower housing are closed together, and the first fiber optic adapter and the second fiber optic adapter are located between the upper housing and the lower housing, respectively. The inner wall of the upper housing has a second mating protrusion, a second mating groove, and a second mating surface, while the inner wall of the lower housing has a first mating protrusion, a first mating groove, and a first mating surface. The surface of the first fiber optic adapter facing the lower housing has a first limiting groove, a first limiting protrusion, and a first limiting surface. The surface of the first fiber optic adapter facing the upper housing has a second limiting groove, a second limiting protrusion, and a second limiting surface. Wherein, the first limiting groove connects to the first mating protrusion, the first limiting protrusion connects to the first mating groove, and the first limiting surface connects to the first mating surface, thus assembling the bottom surface of the first fiber optic adapter to the lower housing and the top surface to the upper housing, fixing the first fiber optic adapter between the upper and lower housings. Furthermore, the inner wall of the upper housing has a downwardly extending hollow limiting post, with the central hole limiting post extending downwards into the lower housing. A limiting through-hole is formed on the inner wall of the lower housing, penetrating the inner wall and connecting to a hollow limiting post, thereby connecting the lower and upper housings, enhancing the mechanical connection between them, and ensuring optical path stability. The first and second fiber optic adapters are located on either side of the hollow limiting post, which extends downwards into the limiting through-hole through the space between them. When assembling the upper and lower housings, the hollow limiting post can be inserted into the limiting through-hole to establish a mechanical connection between them.

[0016] In some embodiments, the hollow limiting post has a through cavity formed along the axis;

[0017] The connecting part passes upward along the bottom surface of the lower housing through the limiting through hole and into the through cavity of the hollow limiting post, thereby connecting the lower housing and the upper housing.

[0018] The above technical solution has the following advantages or beneficial effects: the hollow limiting post has a through-hole along the axis, and the connecting part can pass through the limiting through hole along the bottom surface of the lower shell and be connected to the through-hole cavity of the hollow limiting post, thereby connecting the lower shell and the upper shell, enhancing the mechanical connection between the two, and thus ensuring the stability of the optical path.

[0019] In some embodiments, the first limiting surface is closer to the interior of the first fiber optic adapter than the convex surface of the first limiting protrusion, so as to form a stepped surface between the first limiting surface and the first limiting protrusion.

[0020] The second limiting surface is closer to the interior of the first fiber optic adapter than the convex surface of the second limiting protrusion, so as to form a stepped surface between the second limiting surface and the second limiting protrusion.

[0021] The above technical solution has the following advantages or beneficial effects: the first limiting surface is closer to the interior of the first fiber optic adapter than the convex surface of the first limiting protrusion, so as to form a stepped surface between the first limiting surface and the first limiting protrusion, thereby better confining the first fiber optic adapter to the inner wall of the lower housing. The second limiting surface is closer to the interior of the first fiber optic adapter than the convex surface of the second limiting protrusion, so as to form a stepped surface between the second limiting surface and the second limiting protrusion, thereby better confining the second fiber optic adapter to the inner wall of the upper housing.

[0022] In some embodiments, the inner wall of the lower housing is formed with a first spacer to separate the first fiber optic adapter and the second fiber optic adapter; the limiting through hole penetrates the first spacer.

[0023] The inner wall of the upper housing has a second spacer to separate the first fiber optic adapter from the second fiber optic adapter.

[0024] The above technical solution has the following advantages or beneficial effects: A first spacer is formed on the inner wall of the lower housing to space the first fiber optic adapter and the second fiber optic adapter, limiting their respective positions to prevent misalignment and ensure the stability of the relative optical path. A second spacer is formed on the inner wall of the upper housing, similarly allowing the first fiber optic adapter and the second fiber optic adapter to be spaced apart, limiting their respective positions to prevent misalignment and ensure the stability of the relative optical path. The limiting through-hole penetrates the first spacer to penetrate the inner wall of the lower housing, allowing the central limiting post to be inserted into the inner wall of the lower housing, thereby establishing a mechanical connection between the upper and lower housings.

[0025] In some embodiments, a first upper receiving groove and a second upper receiving groove are respectively formed at one end of the upper housing;

[0026] The lower housing has a first lower receiving groove and a second lower receiving groove formed at one end;

[0027] The first upper receiving groove and the first lower receiving groove are arranged opposite to each other to form a first receiving cavity;

[0028] The second upper receiving groove and the second lower receiving groove are arranged opposite to each other to form a second receiving cavity.

[0029] The above technical solution has the following advantages or beneficial effects: A first upper receiving groove and a second upper receiving groove are respectively formed at one end of the upper housing. A first lower receiving groove and a second lower receiving groove are respectively formed at one end of the housing. The first upper receiving groove and the first lower receiving groove are arranged opposite each other to form a first receiving cavity to accommodate the first fiber optic adapter. The second upper receiving groove and the second lower receiving groove are arranged opposite each other to form a second receiving cavity to accommodate the second fiber optic adapter. Thus, the second fiber optic adapter and the first fiber optic adapter are simultaneously accommodated at the optical port position, forming a dual-optical-port structure, thereby improving the transmission rate.

[0030] In some embodiments, an optical module is provided, comprising:

[0031] The upper shell has a hollow limiting post extending downward on its inner wall;

[0032] The lower housing, together with the upper housing, forms a first receiving cavity and a second receiving cavity. A limiting through hole is formed in the inner wall of the lower housing. The limiting through hole penetrates the inner wall of the lower housing and is inserted into the hollow limiting post, thereby connecting the lower housing and the upper housing.

[0033] A circuit board is disposed between the upper housing and the lower housing. The surface of the circuit board is provided with a first light receiving chip and a first light emitting chip, and a second light receiving chip and a second light emitting chip.

[0034] The first lens assembly is disposed on the surface of the first light receiving chip and the first light emitting chip to change the transmission direction of the light signal to be transmitted to the first light receiving chip and to change the transmission direction of the light emitting signal generated by the first light emitting chip.

[0035] The second lens assembly covers the surfaces of the second light receiving chip and the second light emitting chip to change the transmission direction of the light signal to be transmitted to the second light receiving chip and to change the transmission direction of the light emitting signal generated by the second light emitting chip.

[0036] A first fiber optic adapter is disposed within the first receiving cavity and located on one side of the hollow limiting post; the bottom surface of the first fiber optic adapter is assembled and connected to the lower housing, and the top surface is assembled and connected to the upper housing; the first fiber optic adapter is optically connected to the first lens assembly.

[0037] The second fiber optic adapter is disposed in the second receiving cavity, arranged side by side with the first fiber optic adapter, and located on the other side of the hollow limiting post; the bottom surface of the second fiber optic adapter is assembled and connected to the lower housing, and the top surface is assembled and connected to the upper housing; the second fiber optic adapter is optically connected to the second lens assembly.

[0038] The above technical solution has the following advantages or beneficial effects: The optical module includes an upper housing, a lower housing, a circuit board, a first lens assembly, a second lens assembly, a first fiber optic adapter, and a second fiber optic adapter. A first optical receiving chip and a first optical emitting chip are disposed on the surface of the circuit board, and a second optical receiving chip and a second optical emitting chip are also disposed thereon. The first lens assembly covers the surfaces of the first optical receiving chip and the first optical emitting chip to change the transmission direction of the optical signal to be transmitted to the first optical receiving chip and to change the transmission direction of the optical emission signal generated by the first optical emitting chip. The second lens assembly covers the surfaces of the second optical receiving chip and the second optical emitting chip to change the transmission direction of the optical signal to be transmitted to the second optical receiving chip and to change the transmission direction of the optical emission signal generated by the second optical emitting chip. The upper housing and the lower housing are closed to form a first receiving cavity and a second receiving cavity. The first fiber optic adapter is disposed in the first receiving cavity, and the second fiber optic adapter is disposed in the second receiving cavity. The first fiber optic adapter is connected to the first lens assembly to input an optical signal to the first lens assembly and output the optical signal generated on the surface of the first lens assembly. The second fiber optic adapter is connected to the second lens assembly to input and output optical signals generated on the surface of the second lens assembly. A hollow limiting post extending downwards is formed on the inner wall of the upper housing, with the central hole limiting post extending downwards into the lower housing. A limiting through-hole is formed on the inner wall of the lower housing, penetrating the inner wall of the lower housing and interlocking with the hollow limiting post, thereby connecting the lower and upper housings, enhancing the mechanical connection between them, and ensuring optical path stability. The first and second fiber optic adapters are located on either side of the hollow limiting post, with the hollow limiting post passing through the space between the first and second fiber optic adapters and extending downwards into the limiting through-hole. When assembling the upper and lower housings, the hollow limiting post can be inserted into the limiting through-hole, establishing a mechanical connection between the upper and lower housings.

[0039] In some embodiments, the inner wall of the upper housing is formed with a second mating protrusion, a second mating groove, and a second mating surface; the inner wall of the lower housing is formed with a first mating protrusion, a first mating groove, and a first mating surface.

[0040] The first fiber optic adapter includes:

[0041] The first limiting groove is located on the surface facing the lower housing and is connected to the first mating protrusion;

[0042] The first limiting protrusion is located on the surface facing the lower housing and is connected to the first mating groove;

[0043] The first limiting surface is located on the surface facing the lower housing and is connected to the first mating surface;

[0044] The second limiting groove is located on the surface facing the upper housing and is connected to the second mating protrusion;

[0045] The second limiting protrusion is located on the surface facing the upper housing and is connected to the second mating groove;

[0046] The second limiting surface is located on the surface facing the upper housing and is connected to the second mating surface.

[0047] The above technical solution has the following advantages or beneficial effects: The inner wall of the upper housing has a second mating protrusion, a second mating groove, and a second mating surface; the inner wall of the lower housing has a first mating protrusion, a first mating groove, and a first mating surface. The surface of the first fiber optic adapter facing the lower housing has a first limiting groove, a first limiting protrusion, and a first limiting surface. The surface of the first fiber optic adapter facing the upper housing has a second limiting groove, a second limiting protrusion, and a second limiting surface. Wherein, the first limiting groove connects to the first mating protrusion, the first limiting protrusion connects to the first mating groove, and the first limiting surface connects to the first mating surface, thus assembling the bottom surface of the first fiber optic adapter to the lower housing and the top surface to the upper housing, fixing the first fiber optic adapter between the upper and lower housings.

[0048] In some embodiments, the hollow limiting post has a through cavity formed along the axis;

[0049] The connecting part passes upward along the bottom surface of the lower housing through the limiting through hole and into the through cavity of the hollow limiting post, thereby connecting the lower housing and the upper housing.

[0050] The above technical solution has the following advantages or beneficial effects: the hollow limiting post has a through-hole along the axis, and the connecting part can pass through the limiting through hole along the bottom surface of the lower shell and be connected to the through-hole cavity of the hollow limiting post, thereby connecting the lower shell and the upper shell, enhancing the mechanical connection between the two, and thus ensuring the stability of the optical path.

[0051] In some embodiments, the inner wall of the lower housing is formed with a first spacer to separate the first fiber optic adapter and the second fiber optic adapter; the limiting through hole penetrates the first spacer.

[0052] The inner wall of the upper housing has a second spacer to separate the first fiber optic adapter from the second fiber optic adapter.

[0053] The above technical solution has the following advantages or beneficial effects: A first spacer is formed on the inner wall of the lower housing to space the first fiber optic adapter and the second fiber optic adapter, limiting their respective positions to prevent misalignment and ensure the stability of the relative optical path. A second spacer is formed on the inner wall of the upper housing, similarly allowing the first fiber optic adapter and the second fiber optic adapter to be spaced apart, limiting their respective positions to prevent misalignment and ensure the stability of the relative optical path. The limiting through-hole penetrates the first spacer to penetrate the inner wall of the lower housing, allowing the central limiting post to be inserted into the inner wall of the lower housing, thereby establishing a mechanical connection between the upper and lower housings.

[0054] In some embodiments, the assembly interface of the first fiber optic adapter is arranged perpendicular to the circuit board, and the second fiber optic adapter is arranged side by side with the first fiber optic adapter and faces the same direction.

[0055] The above technical solution has the following advantages or beneficial effects: the assembly interface of the first optical fiber adapter is set along the direction perpendicular to the circuit board, and the second optical fiber adapter is set side by side with the first optical fiber adapter and faces the same direction. Thus, two external optical fibers can be connected to the same optical port at the same time, forming two independent optical communication channels and improving the transmission rate. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0057] Figure 1 This is a partial architecture diagram of an optical communication system provided according to some embodiments of the present disclosure;

[0058] Figure 2 This is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure;

[0059] Figure 3 This is a structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0060] Figure 4 This is an exploded view of an optical module provided according to some embodiments of the present disclosure;

[0061] Figure 5 This is an exploded structural diagram of the optical port location of an optical module according to some embodiments;

[0062] Figure 6 This is a structural diagram of the internal structure of an optical module according to some embodiments;

[0063] Figure 7 Deconstruction of the internal structure of an optical module according to some embodiments Figure 1 ;

[0064] Figure 8 Deconstruction of the internal structure of an optical module according to some embodiments Figure 2 ;

[0065] Figure 9 This is a structural diagram of an optical module optical port according to some embodiments;

[0066] Figure 10 An optical module optical port breakdown structure according to some embodiments Figure 1 ;

[0067] Figure 11 An optical module optical port breakdown structure according to some embodiments Figure 2 ;

[0068] Figure 12 This is a cross-sectional view of the internal structure of some optical modules according to some embodiments;

[0069] Figure 13 This is an exploded cross-sectional view of the interior of an optical module according to some embodiments;

[0070] Figure 14 A lower housing structure according to some embodiments Figure 1 ;

[0071] Figure 15 A lower housing structure according to some embodiments Figure 2 ;

[0072] Figure 16 A lower housing structure according to some embodiments Figure 3 ;

[0073] Figure 17 This is an assembly diagram of a lower housing with a first fiber optic adapter and a second fiber optic adapter according to some embodiments;

[0074] Figure 18 An exploded view of a lower housing assembled with a first fiber optic adapter and a second fiber optic adapter according to some embodiments;

[0075] Figure 19 A lower housing structure according to some embodiments Figure 1 ;

[0076] Figure 20 A lower housing structure according to some embodiments Figure 2 ;

[0077] Figure 21 This is an assembly diagram of an upper housing with a first fiber optic adapter and a second fiber optic adapter according to some embodiments;

[0078] Figure 22 An exploded view of an upper housing assembled with a first fiber optic adapter and a second fiber optic adapter according to some embodiments;

[0079] Figure 23 This is a cross-sectional view of a limiting assembly of an upper housing and a lower housing according to some embodiments;

[0080] Figure 24 This is an exploded cross-sectional view of a limiting assembly of an upper housing and a lower housing according to some embodiments. Detailed Implementation

[0081] The embodiments of this disclosure will now be described clearly and in detail with reference to the accompanying drawings. However, the described embodiments are merely some, and not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0082] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and inclusive, meaning "including, but not limited to"; the terms "first" and "second" should not be construed as indicating or implying relative importance or indicating an upper limit on the number; the term "multiple" means two or more; the term "connection" should be interpreted broadly, for example, "connection" can be a fixed connection, a detachable connection, or an integral part, and can be a direct connection or an indirect connection through an intermediate medium; the use of the terms "applicable to" or "configured to" implies open and inclusive language, which does not exclude applicability to or configuration to devices performing additional tasks or steps; descriptions such as "parallel," "perpendicular," "identical," "consistent," and "aligned" are not limited to absolute mathematical theoretical relationships, but also include acceptable error ranges arising in practice, and differences based on the same design concept but due to manufacturing reasons.

[0083] In optical communication technology, to establish information transmission between information processing devices, information needs to be loaded onto light, and the propagation of light is used to transmit the information. Here, the light carrying the information is called an optical signal. When optical signals are transmitted in information transmission equipment, optical power loss can be reduced, thus enabling high-speed, long-distance, and low-cost information transmission. Information processing devices can recognize and process electrical signals. Information processing devices typically include optical network units (ONUs), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., while information transmission equipment typically includes optical fibers and optical waveguides.

[0084] An optical module enables the conversion between optical and electrical signals between information processing and transmission devices. For example, at least one of the optical signal input or output ports of the optical module is connected to an optical fiber, and at least one of the electrical signal input or output ports is connected to an optical network terminal. A first optical signal from the optical fiber is transmitted to the optical module, which converts it into a first electrical signal and transmits it to the optical network terminal. A second electrical signal from the optical network terminal is transmitted to the optical module, which converts it into a second optical signal and transmits it back to the optical fiber. Since multiple information processing devices can transmit information via electrical signals, at least one of the devices needs to be directly connected to the optical module, rather than all devices. Here, the information processing device directly connected to the optical module is referred to as the host computer of the optical module. Furthermore, the optical signal input or output port of the optical module can be referred to as an optical port, and the electrical signal input or output port can be referred to as an electrical port.

[0085] Figure 1 This is a partial structural diagram of an optical communication system according to some embodiments. Figure 1 As shown, the optical communication system mainly includes a remote information processing device 1000, a local information processing device 2000, a host computer 100, an optical module 200, an optical fiber 101, and a network cable 103.

[0086] One end of optical fiber 101 extends toward the remote information processing device 1000, and the other end of optical fiber 101 is connected to optical module 200 through the optical port of optical module 200. The optical signal can undergo total internal reflection in optical fiber 101, and the propagation of the optical signal in the direction of total internal reflection can almost maintain the original optical power. The optical signal undergoes multiple total internal reflections in optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to optical module 200, or to transmit the optical signal from optical module 200 to remote information processing device 1000, thereby realizing long-distance, low-power loss information transmission.

[0087] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 may be detachably or fixedly connected to the optical module 200. The host computer 100 is configured to provide data signals to the optical module 200, receive data signals from the optical module 200, or monitor or control the operating status of the optical module 200.

[0088] The host computer 100 includes a generally rectangular housing and an optical module interface 102 disposed on the housing. The optical module interface 102 is configured to connect to the optical module 200 so that the host computer 100 and the optical module 200 can establish a one-way or two-way electrical signal connection.

[0089] The host computer 100 also includes an external power interface that can connect to an electrical signal network. For example, this external power interface includes a Universal Serial Bus (USB) interface or a network cable interface 104, which is configured to connect a network cable 103 to establish a unidirectional or bidirectional electrical signal connection between the host computer 100 and the network cable 103. One end of the network cable 103 is connected to the local information processing device 2000, and the other end of the network cable 103 is connected to the host computer 100, thereby establishing an electrical signal connection between the local information processing device 2000 and the host computer 100 via the network cable 103. For example, a third electrical signal emitted by the local information processing device 2000 is transmitted to the host computer 100 via the network cable 103. The host computer 100 generates a second electrical signal based on the third electrical signal. This second electrical signal from the host computer 100 is transmitted to the optical module 200, which converts the second electrical signal into a second optical signal and transmits it to the optical fiber 101. The second optical signal is then transmitted in the optical fiber 101 to the remote information processing device. Alternatively, a first optical signal from the remote information processing device 1000 propagates through the optical fiber 101 and is transmitted to the optical module 200. The optical module 200 converts the first optical signal into a first electrical signal and transmits it to the host computer 100. The host computer 100 generates a fourth electrical signal based on the first electrical signal and transmits the fourth electrical signal to the local information processing device 2000. It should be noted that an optical module is a tool for converting optical signals to electrical signals. During the conversion process, the information itself does not change, but the encoding and decoding methods can change.

[0090] In addition to optical network terminals, the host computer 100 also includes optical line terminals (OLTs), optical network equipment (ONTs), or data center servers.

[0091] Figure 2 This is a partial structural diagram of a host computer according to some embodiments. To clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 Only the structure of the host computer 100 related to the optical module 200 is shown. For example... Figure 2 As shown, the host computer 100 also includes a PCB circuit board 105 disposed within the housing, a cage 106 disposed on the surface of the PCB circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to connect to the electrical port of the optical module 200; the heat sink 107 has fins and other protruding structures to increase the heat dissipation area.

[0092] The optical module 200 is inserted into the cage 106 of the host computer 100, where it is secured. Heat generated by the optical module 200 is conducted to the cage 106 and then dissipated through the heat sink 107. After insertion into the cage 106, the optical module 200's electrical port connects to the electrical connector inside the cage 106, establishing a bidirectional electrical signal connection between the optical module 200 and the host computer 100. Furthermore, the optical port of the optical module 200 connects to the optical fiber 101, establishing a bidirectional optical signal connection between the optical module 200 and the optical fiber 101.

[0093] Figure 3 This is a structural diagram of an optical module according to some embodiments. Figure 4 This is an exploded view of an optical module according to some embodiments. Figure 3 and Figure 4 As shown, the optical module 200 includes a shell, a circuit board 300 disposed within the shell, and a lens assembly. In some embodiments, a first lens assembly 400 and a second lens assembly 500 are provided on the surface of the circuit board 300. The shell includes an upper shell 201 and a lower shell 202, with the upper shell 201 covering the lower shell 202 to form the aforementioned shell having two openings 204 and 205; the outer contour of the shell is generally rectangular.

[0094] In some embodiments, the lower housing 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and perpendicular to the base plate 2021; the upper housing 201 includes a cover plate 2011, which covers the two lower side plates 2022 of the lower housing 202 to form the aforementioned housing.

[0095] In some embodiments, the lower housing 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and perpendicular to the base plate 2021; the upper housing 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and perpendicular to the cover plate 2011. The two upper side plates and the two lower side plates 2022 are combined to realize that the upper housing 201 covers the lower housing 202.

[0096] The direction of the line connecting the two openings 204 and 205 can be consistent with or inconsistent with the length direction of the optical module 200. For example, opening 204 is located at the end of the optical module 200. Figure 3 The opening 205 is also located at the end of the optical module 200 (right end). Figure 3 (Left end). Alternatively, opening 204 is located at the end of the optical module 200, while opening 205 is located on the side of the optical module 200. Opening 204 is an electrical port, through which the gold fingers 301 of the circuit board 300 extend and are inserted into the electrical connector of the host computer 100; opening 205 is an optical port, configured to connect to an external optical fiber 101, so that the optical fiber 101 connects the first lens assembly 400 and the second lens assembly 500 in the optical module 200.

[0097] The assembly method using an upper housing 201 and a lower housing 202 facilitates the installation of circuit boards 300 and other components into the housings, which provide encapsulation and protection for the devices. Furthermore, the assembly of circuit boards 300 and other components facilitates the deployment of positioning components, heat dissipation components, and electromagnetic shielding components, thus promoting automated production.

[0098] In some embodiments, the upper housing 201 and the lower housing 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0099] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to establish a fixed connection between the optical module 200 and the host computer, or to release the fixed connection between the optical module 200 and the host computer.

[0100] For example, the unlocking component 600 is located on the outside of the two lower side plates 2022 of the lower housing 202, and includes a locking component that matches the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the locking component of the unlocking component 600 fixes the optical module 200 in the cage 106; when the unlocking component 600 is pulled, the locking component of the unlocking component 600 moves accordingly, thereby changing the connection relationship between the locking component and the host computer, so as to release the fixation between the optical module 200 and the host computer, thereby allowing the optical module 200 to be pulled out of the cage 106.

[0101] Circuit board 300 includes circuit traces, electronic components, and chips. The circuit traces connect the electronic components and chips according to the circuit design to achieve functions such as power supply, electrical signal transmission, and grounding. Electronic components may include, for example, capacitors, resistors, transistors, and metal-oxide-semiconductor field-effect transistors (MOSFETs). Chips may include, for example, microcontroller units (MCUs), laser driver chips, transimpedance amplifiers (TIAs), limiting amplifiers, clock and data recovery (CDR) chips, power management chips, and digital signal processing (DSP) chips.

[0102] Circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also perform a load-bearing function. For example, the rigid circuit board can stably support the aforementioned electronic components and chips. The rigid circuit board can also be inserted into the electrical connector in the cage 106 of the host computer 100.

[0103] The circuit board 300 also includes gold fingers 301 formed on its end surface, the gold fingers 301 consisting of a plurality of independent pins. The circuit board 300 is inserted into the cage 106 and is connected to an electrical connector within the cage 106 by the gold fingers 301. The gold fingers 301 may be provided only on one side of the surface of the circuit board 300 (e.g., Figure 4 The upper surface shown can also be positioned on the upper and lower surfaces of the circuit board 300 to provide a greater number of pins, thus adapting to applications with high pin count requirements. The gold fingers 301 are configured to establish an electrical connection with the host computer to achieve power supply, grounding, two-wire synchronous serial (Inter-Integrated Circuit, I2C) signal transmission, and data signal transmission. Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards as a supplement to rigid circuit boards.

[0104] Figure 5 This is an exploded structural diagram of the optical port location of an optical module according to some embodiments. For example... Figure 5 As shown, in some embodiments, the optical module may include a first lens assembly 400 and a second lens assembly 500. The first lens assembly 400 and the second lens assembly 500 may be disposed on the surface of the circuit board 300.

[0105] In some embodiments, the optical module may include a first fiber optic ferrule 800a and a second fiber optic ferrule 800b. The first fiber optic ferrule 800a is connected inward to the first lens assembly 400 via a fiber optic ribbon to input optical signals to the first lens assembly 400 and output optical signals emitted by the first lens assembly 400. The second fiber optic ferrule 800b is connected inward to the second lens assembly 500 via a fiber optic ribbon to input optical signals to the second lens assembly 500 and output optical signals emitted by the second lens assembly 500.

[0106] In some embodiments, the optical module may include a first fiber optic adapter 700a and a second fiber optic adapter 700b. The first fiber optic adapter 700a is used to enclose and assemble a first fiber optic ferrule 800a, which is disposed inside the first fiber optic adapter 700a. The first fiber optic ferrule 800a connects to internal optical signals and is connected to one end of the first fiber optic adapter 700a, while a fiber optic connector connects to external optical fibers and is connected to the other end of the first fiber optic adapter 700a, thus achieving internal and external optical signal coupling within the first fiber optic adapter 700a.

[0107] In some embodiments, the second fiber optic adapter 700b is used to enclose and assemble the second fiber optic ferrule 800b, which is disposed inside the second fiber optic adapter 700b. The second fiber optic ferrule 800b connects to an internal optical signal and is connected to one end of the second fiber optic adapter 700b, while another fiber optic connector connects to an external optical fiber and is connected to the other end of the second fiber optic adapter 700b, thus achieving internal and external optical signal coupling within the second fiber optic adapter 700b.

[0108] In some embodiments, the assembly interface of the first fiber optic adapter 700a is arranged in a direction perpendicular to the circuit board 300, and the second fiber optic adapter 700b is arranged side by side with the first fiber optic adapter 700a and faces the same direction. In this way, two external optical fibers can be connected to the same optical port at the same time, forming two independent optical communication channels and improving the transmission rate.

[0109] Figure 6 This is a diagram illustrating the internal structure of an optical module according to some embodiments. Figure 7 Deconstruction of the internal structure of an optical module according to some embodiments Figure 1 , Figure 8 Deconstruction of the internal structure of an optical module according to some embodiments Figure 2 .like Figures 6-8 As shown, the first fiber optic ferrule 800a and the second fiber optic ferrule 800b are respectively connected to the inside of the optical module.

[0110] In some embodiments, the optical module may include a first lens assembly 400 and a second lens assembly 500, which are respectively projected onto the surface of the circuit board 300. The first lens assembly 400 is connected to a first fiber optic ferrule 800a, and the second lens assembly 500 is connected to a second fiber optic ferrule 800b.

[0111] In some embodiments, a first signal processing chip 302 and a second signal processing chip 303 are provided on the surface of the circuit board 300. The first signal processing chip 302 is disposed on one side of the first lens assembly 400, and the second signal processing chip 303 is disposed on one side of the second lens assembly 500. The first signal processing chip 302 and the second signal processing chip 303 may be DSP chips respectively.

[0112] In some embodiments, a first optical receiving chip 304 and a first optical emitting chip 305 are disposed under the first lens assembly 400 to realize the reception and transmission of optical signals. The receiving optical path and the transmitting optical path of the optical signal can be realized through the reflective surface inside the first lens assembly 400, respectively. A first optical fiber strip is connected between the first optical fiber ferrule 800a and the first optical receiving chip 304, and the optical signal is transmitted to the first optical receiving chip 304 through the first optical fiber strip. A second optical fiber strip is connected between the first optical fiber ferrule 800a and the first optical emitting chip 305, and the optical signal generated by the second optical emitting chip 305 is transmitted through the second optical fiber strip.

[0113] In some embodiments, a second optical receiving chip 306 and a second optical emitting chip 307 are disposed under the second lens assembly 500 to realize the reception and transmission of optical signals. The receiving optical path and the transmitting optical path of the optical signal can be realized through the reflective surface inside the second lens assembly 500, respectively. A third optical fiber strip is connected between the second optical fiber ferrule 800b and the second optical receiving chip 306, through which optical signals are transmitted to the second optical receiving chip 306. A fourth optical fiber strip is connected between the second optical fiber ferrule 800b and the second optical emitting chip 307, through which the optical signals generated by the second optical emitting chip 307 are transmitted.

[0114] In some embodiments, a first lens assembly 400 is disposed on the surfaces of a first light receiving chip 304 and a first light emitting chip 305 to change the transmission direction of the optical signal to be transmitted to the first light receiving chip 304 and the transmission direction of the optical emission signal generated by the first light emitting chip 305. A second lens assembly 500 is disposed on the surfaces of a second light receiving chip 306 and a second light emitting chip 307 to change the transmission direction of the optical signal to be transmitted to the second light receiving chip 306 and the transmission direction of the optical emission signal generated by the second light emitting chip 307.

[0115] In some embodiments, a first fiber optic adapter 700a is connected to a first lens assembly 400 to input an optical signal to the first lens assembly 400 and output an optical signal generated on the surface of the first lens assembly 400. A second fiber optic adapter 700b is connected to a second lens assembly 500 to input an optical signal to the second lens assembly 500 and output an optical signal generated on the surface of the second lens assembly 500.

[0116] In some embodiments, an open cavity 400b is formed between the first lens assembly 400 and the surface of the circuit board 300. The first light receiving chip 304 and the first light emitting chip 305 are located within the open cavity 400b. Exemplarily, the first light receiving chip 304 and the first light emitting chip 305 are disposed on the surface of the circuit board 300 and covered by the first lens assembly 400.

[0117] In some embodiments, the presence of the open cavity 400b causes the bottom of the first lens assembly 400 to be open to the first signal processing chip 302. In this case, the thermal conductive gel on the surface of the first signal processing chip 302 may overflow into the open cavity 400b through the opening, causing contamination to the first light emitting chip 305 and the first light receiving chip 304 inside the open cavity 400b.

[0118] In some embodiments, a first heat sink 810 may be coated on the surface of the first signal processing chip 302. The first heat sink 810 may include a supporting surface 811 and a blocking surface 812. The surface of the supporting surface 811 may be provided with a thermally conductive medium, such as thermally conductive gel, to transfer the heat generated by the first signal processing chip 302 to the upper housing 201. The blocking surface 812 forms a certain barrier between the first signal processing chip 302 and the opening of the open cavity 400b, confining the thermally conductive gel on the supporting surface 811, thereby preventing the thermally conductive gel from overflowing into the open cavity 400b, and thus avoiding contamination of the first light receiving chip 304 and the first light emitting chip 305 inside the open cavity 400b by the thermally conductive gel. Similarly, a second heat sink 820 may be coated on the surface of the second signal processing chip 303.

[0119] Figure 9 This is a structural diagram of an optical module optical port according to some embodiments. Figure 10 An optical module optical port breakdown structure according to some embodiments Figure 1 .like Figure 9 and Figure 10 As shown, in some embodiments, the optical port position of the optical module is formed with a dual optical port structure to accommodate the first optical fiber adapter 700a and the second optical fiber adapter 700b.

[0120] In some embodiments, the first fiber optic adapter 700a has a first mounting interface 710a at its outward-facing end to carry a fiber optic connector for connecting to an external fiber optic cable. The first mounting interface 710a is perpendicular to the surface of the circuit board 300. The first fiber optic adapter 700a also has a mounting interface at its inward-facing end to carry a first fiber optic ferrule 800a, and similarly, this mounting interface is perpendicular to the surface of the circuit board 300.

[0121] In some embodiments, the outer end of the second fiber optic adapter 700b has a second mounting interface 710b for carrying another fiber optic connector for connecting to an external fiber optic cable. The second mounting interface 710b is perpendicular to the surface of the circuit board 300. The second mounting interface 710b is parallel to and faces the same direction as the first mounting interface 710a. The outer end of the second fiber optic adapter 700b also has a mounting interface for carrying the second fiber optic ferrule 800b, and this mounting interface is also perpendicular to the surface of the circuit board 300.

[0122] In some embodiments, the upper housing 201 and the lower housing 202 are closed at the optical port end to form a first receiving cavity 2031 and a second receiving cavity 2032, respectively, to accommodate the first optical fiber adapter 700a and the second optical fiber adapter 700b. The shapes of the first receiving cavity 2031 and the second receiving cavity 2032 are respectively adapted to the shapes of the first optical fiber adapter 700a and the second optical fiber adapter 700b, thereby simultaneously accommodating the second optical fiber adapter 700b and the first optical fiber adapter 700a at the optical port position, forming a dual optical port structure, thereby improving the transmission rate.

[0123] Figure 11 An optical module optical port breakdown structure according to some embodiments Figure 2 .like Figure 11 As shown, in some embodiments, the upper housing 201 and the lower housing 202 are closed and connected.

[0124] In some embodiments, the upper housing 201 has a first upper receiving groove 2012 and a second upper receiving groove 2013. The lower housing 202 has a first lower receiving groove 2023 and a second lower receiving groove 2024. In some embodiments, the first upper receiving groove 2012 and the first lower receiving groove 2023 are disposed opposite to each other. The second upper receiving groove 2013 and the second lower receiving groove 2024 are disposed opposite to each other.

[0125] In some embodiments, the first upper receiving groove 2012 and the first lower receiving groove 2023 are closed to form a first receiving cavity 2031, and the second upper receiving groove 2013 and the second lower receiving groove 2024 are closed to form a second receiving cavity 2032.

[0126] Figure 12 This is a cross-sectional view of the internal structure of some optical modules according to some embodiments. Figure 13This is an exploded cross-sectional view of the interior of an optical module according to some embodiments. For example... Figure 12 and Figure 13 As shown, in some embodiments, a first fiber optic adapter 700a is disposed between the upper housing 201 and the lower housing 202. A second fiber optic adapter 700b is disposed between the upper housing 201 and the lower housing 202.

[0127] In some embodiments, if the first fiber optic adapter 700a and the second fiber optic adapter 700b have the same structure, then they are assembled with the upper housing 201 in the same way, and they are assembled with the lower housing 202 in the same way.

[0128] In some embodiments, the surface of the first fiber optic adapter 700a facing the lower housing 202, i.e., its bottom surface, is formed with a first limiting groove 701a, a first limiting protrusion 702a, and a first limiting surface 703a, which are connected in sequence. The first limiting surface 703a is closer to the interior of the first fiber optic adapter 700a than the first limiting groove 701a. The convex surface of the first limiting surface 703a is closer to the interior of the first fiber optic adapter 700a than the convex surface of the first limiting protrusion 702a, thus forming a stepped surface between the first limiting surface 703a and the first limiting protrusion 702a.

[0129] In some embodiments, the first limiting groove 701a is recessed toward the upper housing 201, and the first limiting protrusion 702a protrudes toward the lower housing 202.

[0130] In some embodiments, the surface of the first fiber optic adapter 700a facing the upper housing 201, i.e., its top surface, is formed with a second limiting groove 704a, a second limiting protrusion 705a, and a second limiting surface 706a, which are connected in sequence. The second limiting surface 706a is closer to the interior of the first fiber optic adapter 700a than the second limiting groove 704a. The convex surface of the second limiting surface 706a is closer to the interior of the first fiber optic adapter 700a than the convex surface of the second limiting protrusion 705a, thus forming a stepped surface between the second limiting surface 706a and the second limiting protrusion 705a.

[0131] In some embodiments, the second limiting groove 704a is recessed toward the lower housing 202, and the second limiting protrusion 705a protrudes toward the upper housing 201.

[0132] In some embodiments, the inner wall of the lower housing 202 is formed with a first mating protrusion 2027, a first mating groove 2028 and a first mating surface 2029, which are connected in sequence.

[0133] In some embodiments, the first mating protrusion 2027 protrudes toward the upper housing 201, and the first mating groove 2028 is recessed toward the outer surface of the lower housing 202.

[0134] In some embodiments, the inner wall of the upper housing 201 is formed with a second mating protrusion 2016, a second mating groove 2017 and a second mating surface 2018, which are connected in sequence.

[0135] In some embodiments, the second mating protrusion 2016 protrudes toward the lower housing 202, and the second mating groove 2017 is recessed toward the outer surface of the upper housing 201.

[0136] In some embodiments, the first limiting groove 701a is connected to the first mating protrusion 2027, the first limiting protrusion 702a is connected to the first mating groove 2028, and the first limiting surface 703a is connected to the first mating surface 2029, thereby realizing the fixed assembly connection between the first fiber optic adapter 700a and the lower housing 202.

[0137] In some embodiments, the second limiting groove 704a is connected to the second mating protrusion 2016, the second limiting protrusion 705a is connected to the second mating groove 2017, and the second limiting surface 706a is connected to the second mating surface 2018, thereby realizing the fixed assembly connection between the first fiber optic adapter 700a and the upper housing 201.

[0138] In some embodiments, a set of second mating protrusions 2016, second mating grooves 2017 and second mating surfaces 2018 are formed on one side of the inner wall of the upper housing 201 to limit the connection of the first fiber optic adapter 700a; another set of second mating protrusions 2016, second mating grooves 2017 and second mating surfaces 2018 are formed on the other side to limit the connection of the second fiber optic adapter 700b.

[0139] In some embodiments, a set of first mating protrusions 2027, first mating grooves 2028 and first mating surfaces 2029 are formed on one side of the inner wall of the lower housing 202 to limit the connection of the first fiber optic connector 700a; another set of first mating protrusions 2027, first mating grooves 2028 and first mating surfaces 2029 are formed on the other side to limit the connection of the second fiber optic adapter 700b.

[0140] Figure 14 A lower housing structure according to some embodiments Figure 1 , Figure 15 A lower housing structure according to some embodiments Figure 2 , Figure 16 A lower housing structure according to some embodiments Figure 3 .like Figure 14-16 As shown, in some embodiments, a first lower receiving groove 2023 and a second lower receiving groove 2024 are formed at one end of the inner wall of the lower housing 202. The two are arranged adjacent to each other and are arranged side by side along the width direction of the lower housing 202.

[0141] In some embodiments, the first lower receiving groove 2023 has a first mating protrusion 2027, a first mating groove 2028 and a first mating surface 2029 sequentially formed on the side facing the inside of the optical module, so as to limit the lower surface of the first optical fiber connector 700a.

[0142] In some embodiments, the side of the second lower receiving groove 2024 facing the inside of the optical module also has another set of first mating protrusions 2027, first mating grooves 2028 and first mating surfaces 2029, which limit the lower surface of the second fiber optic connector 700b.

[0143] In some embodiments, a first spacer 2025 is formed at the middle position of the inner wall of the lower housing 202 to space the first fiber optic adapter 700a and the second fiber optic adapter 700b, thereby limiting their respective positions to prevent misalignment and ensure the stability of the relative optical path. A limiting through hole 2026 is formed in the inner cavity of the first spacer 2025, and the limiting through hole 2026 penetrates the inner wall of the lower housing 202.

[0144] Figure 17 This is an assembly diagram of a lower housing with a first fiber optic adapter and a second fiber optic adapter according to some embodiments. Figure 18 This is an exploded view showing the assembly of a lower housing with a first fiber optic adapter and a second fiber optic adapter according to some embodiments. Figure 17 and Figure 18 As shown, in some embodiments, the lower housing 202 is assembled and connected to the first fiber optic adapter 700a and the second fiber optic adapter 700b, respectively.

[0145] In some embodiments, one end of the first fiber optic adapter 700a is placed in the first lower receiving groove 2023, and the other end is fixed to the inner wall of the lower housing 202 by a first mating protrusion 2027, a first mating groove 2028, and a first mating surface 2029 on one side. One end of the second fiber optic adapter 700b is placed in the second lower receiving groove 2024, and the other end is fixed to the inner wall of the lower housing 202 by a first mating protrusion 2027, a first mating groove 2028, and a first mating surface 2029 on the other side.

[0146] In some embodiments, the first fiber optic adapter 700a and the second fiber optic adapter 700b are respectively disposed on both sides of the first spacer 2025 to prevent them from shifting and to ensure the stability of the relative optical path.

[0147] Figure 19 A lower housing structure according to some embodiments Figure 1 , Figure 20 A lower housing structure according to some embodiments Figure 2 .like Figure 19 and Figure 20 As shown, the inner wall of the upper housing 201 is formed with a first upper receiving groove 2012 and a second upper receiving groove 2013, which are arranged adjacent to each other and side by side along the width direction of the upper housing 201.

[0148] In some embodiments, the first upper receiving groove 2012 is sequentially connected to a second mating protrusion 2016, a second mating groove 2017 and a second mating surface 2018 on the side facing the inside of the optical module, so as to limit the connection of the upper surface of the first fiber optic adapter 700a.

[0149] In some embodiments, the second upper receiving groove 2013 is sequentially connected to the side facing the inside of the optical module with a second mating protrusion 2016, a second mating groove 2017 and a second mating surface 2018 located on the other side, so as to limit the connection of the upper surface of the second fiber optic adapter.

[0150] In some embodiments, a second spacer 2014 is formed at the middle of the inner wall of the upper housing 201 to space the first fiber optic adapter 700a and the second fiber optic adapter 700b, thereby limiting their respective positions and preventing misalignment. A hollow limiting post 2015 is formed on the surface of the second spacer 2014. The hollow limiting post 2015 has a through cavity formed along the axial direction. The hollow limiting post 2015 extends downward along the surface of the second spacer 2014 toward the lower housing 202.

[0151] Figure 21 This is an assembly diagram of an upper housing with a first fiber optic adapter and a second fiber optic adapter according to some embodiments. Figure 22 This is an exploded view showing an upper housing assembled with a first fiber optic adapter and a second fiber optic adapter according to some embodiments. Figure 21 and Figure 22 As shown, in some embodiments, the lower housing is assembled and connected to the first fiber optic adapter 700a and the second fiber optic adapter 700b, respectively.

[0152] In some embodiments, one end of the first fiber optic adapter 700a is placed in the first upper receiving groove 2012, and the other end is fixed to the inner wall of the upper housing 201 by a second mating protrusion 2016, a second mating groove 2017, and a second mating surface 2018 on one side. One end of the second fiber optic adapter 700b is placed in the second upper receiving groove 2013, and the other end is fixed to the inner wall of the upper housing 201 by a second mating protrusion 2016, a second mating groove 2017, and a second mating surface 2018 on the other side.

[0153] In some embodiments, the first fiber optic adapter 700a and the second fiber optic adapter 700b are respectively disposed on both sides of the second spacer 2014 to prevent them from shifting and to ensure the stability of the relative optical path.

[0154] Figure 23 This is a cross-sectional view of a limiting assembly of an upper housing and a lower housing according to some embodiments. Figure 24 This is an exploded cross-sectional view of a limiting assembly of an upper housing and a lower housing according to some embodiments. Figure 23 and Figure 24 As shown, in some embodiments, the upper housing 201 and the lower housing 202 are assembled and connected to each other, and a receiving cavity is formed between them to accommodate the first fiber optic adapter 700a and the second fiber optic adapter 700b.

[0155] In some embodiments, the hollow limiting post 2015 has a through cavity formed along the axial direction. The hollow limiting post 2015 extends along the surface of the second spacer 2014 toward the lower housing 202.

[0156] In some embodiments, the limiting through hole 2026 penetrates the inner wall of the lower housing 202.

[0157] In some embodiments, the hollow limiting post 2015 passes through the space between the first fiber optic adapter 700a and the second fiber optic adapter 700b, and can extend downward into the limiting through hole 2026. When the upper housing 201 and the lower housing 202 are assembled and connected, the hollow limiting post 2015 can be inserted into the limiting through hole 2026 to establish a mechanical connection between the upper housing 201 and the lower housing 202.

[0158] In some embodiments, the connecting portion 203 can pass upward along the bottom surface of the lower housing 202 through the limiting through hole 2026 and be inserted into the through cavity of the hollow limiting post 2015, thereby connecting the upper housing 201 and the lower housing 202 and achieving a fixed connection between the upper housing 201 and the lower housing 202. This allows the first fiber optic adapter 700a and the second fiber optic adapter 700b to be securely positioned between the lower housing 202 and the upper housing 201. Exemplarily, the connecting portion 203 can be a screw, which passes upward along the bottom surface of the lower housing 202 through the limiting through hole 2026 and is inserted into the through cavity of the hollow limiting post 2015, thereby connecting the upper housing 201 and the lower housing 202.

[0159] In some embodiments, the limiting through-hole 2026 is plugged into the hollow limiting post 2015 to connect the lower housing 202 and the upper housing 201, enhancing the mechanical connection between them and ensuring optical path stability. The first fiber optic adapter 700a and the second fiber optic adapter 700b are located on opposite sides of the hollow limiting post 2015, with the hollow limiting post 2015 passing through the space between the first fiber optic adapter 700a and the second fiber optic adapter 700b and extending downwards into the limiting through-hole 2026. When assembling the upper housing 201 and the lower housing 202, the hollow limiting post 2015 can be plugged into the limiting through-hole 2026 to establish a mechanical connection between the upper housing 201 and the lower housing 202.

[0160] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An optical module characterized by comprising: include: The upper shell has a second mating protrusion, a second mating groove, and a second mating surface formed on its inner wall; the inner wall of the upper shell also has a hollow limiting post extending downward. The lower housing, together with the upper housing, forms a first receiving cavity and a second receiving cavity. The inner wall of the lower housing has a first mating protrusion, a first mating groove, and a first mating surface. The inner wall of the lower housing has a limiting through hole that penetrates the inner wall of the lower housing. The limiting through hole is inserted into and connected to the hollow limiting post, thereby connecting the lower housing and the upper housing. A first fiber optic adapter, disposed within the first receiving cavity and located on one side of the hollow limiting post; comprising: The first limiting groove is located on the surface facing the lower housing and is connected to the first mating protrusion; The first limiting protrusion is located on the surface facing the lower housing and is connected to the first mating groove; The first limiting surface is located on the surface facing the lower housing and is connected to the first mating surface; The second limiting groove is located on the surface facing the upper housing and is connected to the second mating protrusion; The second limiting protrusion is located on the surface facing the upper housing and is connected to the second mating groove; The second limiting surface is located on the surface facing the upper housing and is connected to the second mating surface; The second fiber optic adapter is disposed in the second receiving cavity, arranged side by side with the first fiber optic adapter, and located on the other side of the hollow limiting post.

2. The optical module according to claim 1, characterized by The hollow limiting post has a through-cavity formed along the axis; The connecting part passes upward along the bottom surface of the lower housing through the limiting through hole and into the through cavity of the hollow limiting post, thereby connecting the lower housing and the upper housing.

3. The optical module according to claim 1, characterized by The first limiting surface is closer to the interior of the first fiber optic adapter than the convex surface of the first limiting protrusion, so as to form a stepped surface between the first limiting surface and the first limiting protrusion. The second limiting surface is closer to the interior of the first fiber optic adapter than the convex surface of the second limiting protrusion, so as to form a stepped surface between the second limiting surface and the second limiting protrusion.

4. The optical module according to claim 1, characterized by The inner wall of the lower housing has a first spacer portion to separate the first fiber optic adapter and the second fiber optic adapter; the limiting through hole penetrates the first spacer portion. The inner wall of the upper housing has a second spacer to separate the first fiber optic adapter from the second fiber optic adapter.

5. The optical module of claim 1, wherein, The upper shell has a first upper receiving groove and a second upper receiving groove formed at one end; The lower housing has a first lower receiving groove and a second lower receiving groove formed at one end; The first upper receiving groove and the first lower receiving groove are arranged opposite to each other to form a first receiving cavity; The second upper receiving groove and the second lower receiving groove are arranged opposite to each other to form a second receiving cavity.

6. An optical module characterized by comprising: include: The upper shell has a hollow limiting post extending downward on its inner wall; The lower housing, together with the upper housing, forms a first receiving cavity and a second receiving cavity. A limiting through hole is formed in the inner wall of the lower housing. The limiting through hole penetrates the inner wall of the lower housing and is inserted into the hollow limiting post, thereby connecting the lower housing and the upper housing. A circuit board is disposed between the upper housing and the lower housing. The surface of the circuit board is provided with a first light receiving chip and a first light emitting chip, and a second light receiving chip and a second light emitting chip. The first lens assembly is disposed on the surface of the first light receiving chip and the first light emitting chip to change the transmission direction of the light signal to be transmitted to the first light receiving chip and to change the transmission direction of the light emitting signal generated by the first light emitting chip. The second lens assembly covers the surfaces of the second light receiving chip and the second light emitting chip to change the transmission direction of the light signal to be transmitted to the second light receiving chip and to change the transmission direction of the light emitting signal generated by the second light emitting chip. The first optical fiber adapter is disposed in the first receiving cavity and located on one side of the hollow limiting post; The bottom surface of the first fiber optic adapter is assembled and connected to the lower housing, and the top surface is assembled and connected to the upper housing; The first fiber optic adapter is optically connected to the first lens assembly; The second fiber optic adapter is disposed in the second receiving cavity, arranged side by side with the first fiber optic adapter, and located on the other side of the hollow limiting post; The bottom surface of the second fiber optic adapter is assembled and connected to the lower housing, and the top surface is assembled and connected to the upper housing; The second fiber optic adapter is optically connected to the second lens assembly.

7. The optical module according to claim 6, characterized by The inner wall of the upper housing has a second mating protrusion, a second mating groove, and a second mating surface; the inner wall of the lower housing has a first mating protrusion, a first mating groove, and a first mating surface. The first fiber optic adapter includes: The first limiting groove is located on the surface facing the lower housing and is connected to the first mating protrusion; The first limiting protrusion is located on the surface facing the lower housing and is connected to the first mating groove; The first limiting surface is located on the surface facing the lower housing and is connected to the first mating surface; The second limiting groove is located on the surface facing the upper housing and is connected to the second mating protrusion; The second limiting protrusion is located on the surface facing the upper housing and is connected to the second mating groove; The second limiting surface is located on the surface facing the upper housing and is connected to the second mating surface.

8. The optical module according to claim 6, characterized by The hollow limiting post has a through-cavity formed along the axis; The connecting part passes upward along the bottom surface of the lower housing through the limiting through hole and into the through cavity of the hollow limiting post, thereby connecting the lower housing and the upper housing.

9. The optical module of claim 6, wherein, The inner wall of the lower housing has a first spacer portion to separate the first fiber optic adapter and the second fiber optic adapter; the limiting through hole penetrates the first spacer portion. The inner wall of the upper housing has a second spacer to separate the first fiber optic adapter from the second fiber optic adapter.

10. The optical module of claim 6, wherein, The assembly interface of the first fiber optic adapter is arranged perpendicular to the circuit board, and the second fiber optic adapter is arranged side by side with the first fiber optic adapter and faces the same direction.

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