Optical module

Abstract

The invention provides an optical module which comprises a lens assembly and an optical fiber support, one end, facing the optical fiber support, of the lens assembly is provided with a wrapping cavity, a second lens is arranged in the wrapping cavity, the optical fiber support wraps an optical fiber, a gap exists between the optical fiber end face of the optical fiber and the second lens, and the optical fiber end face of the optical fiber and the first end face of the optical fiber support are inclined planes. The wrapping cavity comprises a stopping protrusion, the stopping protrusion protrudes out of the second lens, the face, facing the optical fiber support, of the stopping protrusion is a stopping face, the stopping face is an inclined face, and the stopping face is in contact connection with the first end face. According to the invention, the optical fiber support and the lens assembly are connected along the length direction of the lens assembly through the stop surface and the inclined surface of the first end surface of the optical fiber support.

Description

optical modules

[0001] This application claims the priority of application number 202420534117.7 filed with the China Patent Office on March 19, 2024; the priority of application number 202321941203.1 filed with the China Patent Office on July 21, 2023; the priority of application number 202311158160.4 filed with the China Patent Office on September 8, 2023; and the priority of application number 202322693819.8 filed with the China Patent Office on October 8, 2023; all of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of optical fiber communication technology, and in particular to an optical module. Background Art

[0003] With the development of new services and applications such as cloud computing, mobile internet, and video, advances in optical communication technology are becoming increasingly important. In optical communication technology, optical modules are tools for converting optical and electrical signals, and are key components in optical communication equipment. Furthermore, as optical communication technology develops, the transmission rate of optical modules is required to continue to increase.

[0004] Summary of the Invention

[0005] The present disclosure provides an optical module comprising:

[0006] Circuit board with optical chip:

[0007] A lens assembly is provided on the optical chip; a first lens is provided on the inner surface of the lens assembly facing the optical chip, and a reflective surface is provided on the outer surface of the lens assembly facing away from the circuit board; a wrapping cavity is provided at one end of the lens assembly, and a second lens is provided in the wrapping cavity;

[0008] Fiber optic bracket, wrapping the optical fiber; connection between the fiber optic bracket and the lens assembly;

[0009] There is a gap between the optical fiber end face of the optical fiber and the second lens, and the first end face of the optical fiber holder and the optical fiber end face are both inclined surfaces;

[0010] A positioning column is provided in the package cavity, and the second lens is located on one side of the positioning column;

[0011] The first end face is provided with a positioning hole, and the positioning post is inserted into the positioning hole to achieve the connection between the optical fiber bracket and the lens assembly;

[0012] The wrapping cavity includes a stop protrusion, which is located on the other side of the positioning post; the side of the stop protrusion facing the optical fiber holder is a stop surface, the first end surface includes a step surface and a polished surface, the step surface and the polished surface have different angles, and the stop surface includes a first stop portion and a second stop portion, the first stop portion is located in the upper area of ​​the positioning post, and the second stop portion is located in the lower area of ​​the positioning post, and the distance between the first stop portion and the opening of the wrapping cavity is greater than the distance between the second stop portion and the opening of the wrapping cavity, so that the second stop portion contacts the polished surface and the first stop portion does not contact the step surface;

[0013] The optical signal emitted by the optical chip is incident on the optical fiber end face after passing through the first lens, the reflection surface and the second lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] FIG1 is a partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure;

[0016] FIG2 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure;

[0017] FIG3 is a structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0018] FIG4 is an exploded view of an optical module according to some embodiments of the present disclosure;

[0019] FIG5 is an exploded view of an optical transceiver component and a circuit board according to some embodiments of the present disclosure;

[0020] FIG6 is a cross-sectional view of an optical transceiver component and an optical chip according to some embodiments of the present disclosure;

[0021] FIG7 is an exploded view of an optical transceiver component according to some embodiments of the present disclosure;

[0022] FIG8 is a structural diagram of an optical fiber array provided in accordance with some embodiments of the present disclosure at a certain viewing angle;

[0023] FIG9 is a structural diagram of an optical fiber array provided in accordance with some embodiments of the present disclosure from another perspective;

[0024] FIG10 is a structural diagram of a lens assembly provided at a certain viewing angle according to some embodiments of the present disclosure;

[0025] FIG11 is a structural diagram of a lens assembly provided in accordance with some embodiments of the present disclosure at another viewing angle;

[0026] FIG12 is a cross-sectional view of a lens assembly provided at a certain viewing angle according to some embodiments of the present disclosure;

[0027] FIG13 is a cross-sectional view of an optical transceiver component provided at a certain viewing angle according to some embodiments of the present disclosure;

[0028] FIG14 is a cross-sectional view of a lens assembly provided in accordance with some embodiments of the present disclosure at another viewing angle;

[0029] FIG15 is a cross-sectional view of an optical transceiver component provided in accordance with some embodiments of the present disclosure at another viewing angle;

[0030] FIG16 is an assembly diagram of a circuit board, a first lens assembly, and a second lens assembly according to some embodiments of the present disclosure;

[0031] FIG17 is a light path diagram of a first lens assembly according to some embodiments of the present disclosure;

[0032] FIG18 is an exploded view of a circuit board, a first lens assembly, and a second lens assembly according to some embodiments of the present disclosure;

[0033] FIG19 is a structural diagram of a first lens assembly provided at a first viewing angle according to some embodiments of the present disclosure;

[0034] FIG20 is a cross-sectional view of a first lens assembly according to some embodiments of the present disclosure;

[0035] FIG21 is a structural diagram of a ferrule provided according to some embodiments of the present disclosure;

[0036] FIG22 is a cross-sectional view of an assembly of a first lens assembly and a ferrule according to some embodiments of the present disclosure;

[0037] FIG23 is a light path diagram of a reflector according to some embodiments of the present disclosure;

[0038] FIG24 is a cross-sectional view of another first lens assembly according to some embodiments of the present disclosure;

[0039] FIG25 is a structural diagram of another ferrule provided according to some embodiments of the present disclosure;

[0040] FIG26 is a cross-sectional view of an assembly of another first lens assembly and another ferrule according to some embodiments of the present disclosure;

[0041] FIG27 is a first schematic diagram of the lower housing structure according to some embodiments of the present disclosure;

[0042] FIG28 is a second schematic diagram of the lower housing structure provided according to some embodiments of the present disclosure;

[0043] FIG29 is a first schematic diagram of a cross-sectional structure of a lower housing according to some embodiments of the present disclosure;

[0044] FIG30 is a schematic structural diagram of a metal clamp provided according to some embodiments of the present disclosure;

[0045] FIG31 is a schematic structural diagram of an optical transceiver component according to some embodiments of the present disclosure;

[0046] FIG32 is a schematic diagram illustrating the connection between the optical transceiver component and the lower housing according to some embodiments of the present disclosure;

[0047] FIG33 is a schematic diagram showing the connection between an optical transceiver component, a metal clamp and a lower housing according to some embodiments of the present disclosure;

[0048] FIG34 is a cross-sectional schematic diagram of a metal clamp, a lower housing, and an optical transceiver component according to some embodiments of the present disclosure;

[0049] FIG35 is a first structural diagram of an upper housing according to some embodiments of the present disclosure;

[0050] FIG36 is a second structural schematic diagram of an upper housing according to some embodiments of the present disclosure;

[0051] FIG37 is a schematic cross-sectional view of an upper housing and a lower housing according to some embodiments of the present disclosure;

[0052] FIG38 is a schematic diagram of the structure of a circuit board and an optical transceiver component according to some embodiments of the present disclosure;

[0053] FIG39 is a partial cross-sectional diagram of an optical module according to some embodiments of the present disclosure;

[0054] FIG40 is a schematic diagram of a partial structure of an optical module provided according to some embodiments of the present disclosure;

[0055] FIG41 is a schematic diagram of a partial signal flow of an optical module according to some embodiments of the present disclosure;

[0056] FIG42 is a schematic diagram of an MCU structure provided according to some embodiments of the present disclosure;

[0057] FIG43 is a schematic diagram of signal flow of an optical module according to some embodiments of the present disclosure;

[0058] FIG44 is a second schematic diagram of a structure portion of an optical module according to some embodiments of the present disclosure;

[0059] FIG45 is a third schematic diagram of an optical module structure provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0060] Some embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. However, the embodiments described are only some of the embodiments of the present disclosure, not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present disclosure are within the scope of protection of the present disclosure.

[0061] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as open and inclusive, that is, "including, but not limited to"; the terms "first" and "second" are not to be understood as indicating or implying relative importance or indicating an upper limit on quantity; the term "plurality" means two or more; the term "connected" is to be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection, and can be directly connected or indirectly connected through an intermediate medium; the use of the terms "suitable for" or "configured to" means open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps; terms such as "parallel", "perpendicular", "same", "consistent", "level" and so on are not limited to absolute mathematical theoretical relationships, but also include the acceptable error range generated in practice, and also include differences based on the same design concept but due to manufacturing reasons.

[0062] In optical communication technology, to establish information transmission between information processing devices, it is necessary to load the information onto light and use the propagation of light to achieve information transmission. Here, the light loaded with information is an optical signal. When transmitting optical signals within information transmission equipment, they can reduce optical power loss, thereby enabling high-speed, long-distance, and low-cost information transmission. The signals that information processing equipment can recognize and process are electrical signals. Information processing equipment typically includes optical network units (ONUs), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., and information transmission equipment typically includes optical fibers and optical waveguides.

[0063] Optical modules can convert optical signals into electrical signals between information processing devices and information transmission devices. For example, at least one of the optical signal input or output ends of an optical module is connected to an optical fiber, and at least one of the electrical signal input or output ends of the optical module is connected to an optical network terminal. A first optical signal from the optical fiber is transmitted to the optical module, which converts the first optical signal into a first electrical signal and transmits the first electrical signal to the optical network terminal. A second electrical signal from the optical network terminal is transmitted to the optical module, which converts the second electrical signal into a second optical signal and transmits the second optical signal to the optical fiber. Because multiple information processing devices can transmit information via electrical signals, at least one of the multiple information processing devices needs to be directly connected to the optical module, rather than all of them. Here, the information processing device directly connected to the optical module is referred to as the optical module's host computer. Furthermore, the optical signal input or output end of the optical module can be referred to as an optical port, and the electrical signal input or output end of the optical module can be referred to as an electrical port.

[0064] Figure 1 is a partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure. As shown in Figure 1, 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.

[0065] One end of optical fiber 101 extends toward 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. Optical signals can be totally reflected in optical fiber 101, and the propagation of the optical signal in the direction of total reflection can almost maintain the original optical power. The optical signal undergoes multiple total reflections in optical fiber 101 to transmit the optical signal from remote information processing device 1000 to optical module 200, and vice versa, thereby achieving long-distance, low-power information transmission.

[0066] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 may be detachably connected 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.

[0067] The host computer 100 includes a substantially 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 to establish a unidirectional or bidirectional electrical signal connection between the host computer 100 and the optical module 200.

[0068] The host computer 100 also includes an external electrical interface that can access an electrical signal network. For example, the external electrical interface includes a Universal Serial Bus (USB) interface or a network cable interface 104. The network cable interface 104 is configured to access a network cable 103 so that the host computer 100 establishes a unidirectional or bidirectional electrical signal connection with 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, so that an electrical signal connection is established 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. The second electrical signal from the host computer 100 is transmitted to the optical module 200. The optical module 200 converts the second electrical signal into a second optical signal and transmits the second optical signal to the optical fiber 101. The second optical signal is then transmitted to the remote information processing device 1000 via the optical fiber 101. For example, a first optical signal from the remote information processing device 1000 is transmitted through the optical fiber 101. The first optical signal from the optical fiber 101 is transmitted to the optical module 200. The optical module 200 converts the first optical signal into a first electrical signal. The optical module 200 transmits the first electrical signal 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 optical modules are tools for converting optical signals into electrical signals. During this conversion process, the information does not change, but the encoding and decoding methods of the information can change.

[0069] In addition to the optical network terminal, the host computer 100 also includes an optical line terminal (OLT), an optical network device (ONT), or a data center server.

[0070] FIG2 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, FIG2 only shows the structure of the host computer 100 related to the optical module 200. As shown in FIG2, the host computer 100 also includes a PCB circuit board 105 disposed in 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 a protruding structure such as fins that increase the heat dissipation area.

[0071] The optical module 200 is inserted into the cage 106 of the host computer 100. The cage 106 secures the optical module 200. Heat generated by the optical module 200 is transferred to the cage 106 and then dissipated through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 connects with the electrical connector inside the cage 106, thereby 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, thereby establishing a bidirectional optical signal connection between the optical module 200 and the optical fiber 101.

[0072] Figure 3 is a structural diagram of an optical module according to some embodiments of the present disclosure, and Figure 4 is an exploded view of an optical module according to some embodiments of the present disclosure. As shown in Figures 3 and 4, the optical module 200 includes a housing, a circuit board 300 disposed within the housing, and an optical transceiver component 900.

[0073] The housing includes an upper housing 201 and a lower housing 202 . The upper housing 201 covers the lower housing 202 to form the housing having two openings 204 and 205 . The outer contour of the housing is generally a square.

[0074] In some embodiments, the lower shell 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and arranged perpendicular to the base plate 2021; the upper shell 201 includes a cover plate 2011, and the cover plate 2011 covers the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell.

[0075] In some embodiments, the lower shell 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and arranged perpendicularly to the base plate 2021; the upper shell 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and arranged perpendicularly to the cover plate 2011. The two upper side plates are combined with the two lower side plates 2022 to achieve the upper shell 201 covering the lower shell 202.

[0076] The direction of the line connecting the two openings 204 and 205 can be consistent with the length of the optical module 200, or it can be inconsistent with the length of the optical module 200. For example, opening 204 is located at the end of the optical module 200 (the right end in Figure 3), and opening 205 is also located at the end of the optical module 200 (the left end in Figure 3). 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, from which the gold finger of the circuit board 300 extends and is inserted into the electrical connector of the host computer 100; opening 205 is an optical port, configured to receive an external optical fiber 101, so that the optical fiber 101 can connect to the optical transceiver component 900 in the optical module 200.

[0077] The combined assembly of the upper housing 201 and the lower housing 202 facilitates installation of the circuit board 300, the optical transceiver 900, and the like within the housing, which provides encapsulation and protection for these components. Furthermore, during assembly of the circuit board 300 and the optical transceiver 900, the positioning components, heat dissipation components, and electromagnetic shielding components of these components are easily positioned, facilitating automated production.

[0078] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0079] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to achieve 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.

[0080] For example, the unlocking component 600 is located on the outside of the two lower side panels 2022 of the lower housing 202 and includes a snap-fit ​​component that mates with the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the snap-fit ​​component of the unlocking component 600 secures the optical module 200 in the cage 106. When the unlocking component 600 is pulled, the snap-fit ​​component of the unlocking component 600 moves accordingly, thereby changing the connection between the snap-fit ​​component and the host computer, thereby releasing the optical module 200 from the cage 106 and allowing the optical module 200 to be removed from the cage 106.

[0081] The circuit board 300 includes circuit traces, electronic components, and chips. The electronic components and chips are connected according to the circuit design through the circuit traces 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 (LIAs), clock and data recovery chips (CDRs), power management chips, and digital signal processing (DSP) chips.

[0082] The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the load-bearing function. For example, the rigid circuit board can stably carry the above-mentioned 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.

[0083] The circuit board 300 also includes a gold finger formed on the surface of its end, and the gold finger is composed of a plurality of independent pins. The circuit board 300 is inserted into the cage 106, and the gold finger is connected to the electrical connector in the cage 106. The gold finger can be set only on the surface of one side of the circuit board 300 (for example, the upper surface shown in Figure 4), or it can be set on the upper and lower surfaces of the circuit board 300 to provide a larger number of pins, thereby adapting to occasions where a large number of pins are required. The gold finger is 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, data signal transmission, etc. Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards to supplement rigid circuit boards.

[0084] Figure 5 is an exploded view of an optical transceiver component and a circuit board according to some embodiments of the present disclosure. Figure 6 is a cross-sectional view of an optical transceiver component and an optical chip according to some embodiments of the present disclosure. As shown in Figures 5 and 6, in some embodiments, an optical chip 301 may be disposed on a circuit board 300. Optical chip 301 may be attached to circuit board 300.

[0085] The optical chip 301 may include a light emitting chip 311. The light emitting chip 311 may emit an optical signal. The light emitting surface of the light emitting chip 311 may be located on the top surface of the light emitting chip 311, so that the light beam emitted by the light emitting chip is perpendicular to the circuit board 300.

[0086] The optical chip 301 may include a light receiving chip 312. The light receiving chip 312 can receive optical signals. The light receiving chip 312 and the light transmitting chip 311 can be fixed side by side on the circuit board 300. The light incident surface of the light receiving chip 312 can be located on the top surface of the light receiving chip 312, so that the light beam received by the light receiving chip 312 is perpendicular to the circuit board 300.

[0087] Since the optical chip 301 is attached to the circuit board 300 , its light emitting surface or light incident surface is located on the top surface of the optical chip 301 , so the light beam emitted by the optical emitting chip is perpendicular to the circuit board 300 , and the light beam received by the optical receiving chip is perpendicular to the circuit board 300 .

[0088] The optical fiber 101 connected to the optical module is parallel to the circuit board 300. It is necessary to change the transmission direction of the light beam emitted by the optical transmitting chip and the external light beam transmitted to the optical receiving chip. Therefore, the light beam emitted by the optical transmitting chip is changed by the optical transceiver component 900, so that the light beam emitted by the optical transmitting chip is reflected by the lens assembly, and the reflected light beam is parallel to the circuit board 300, so as to facilitate the reflected light beam to be incident on the optical fiber; the receiving light beam transmitted by the external optical fiber is reflected by the lens assembly, and the reflected light beam is perpendicular to the circuit board 300, so as to be easily received by the optical receiving chip.

[0089] As shown in FIG. 5 and FIG. 6 , an optical matching chip 302 may be provided on the circuit board 300 .

[0090] The optical matching chip 302 may include a laser driver chip 321. The laser driver chip 321 may be bonded to the circuit board 300 by silver glue for fixing and heat dissipation, and then the bare chip and the circuit board 300 may be connected by gold wire bonding.

[0091] The optical matching chip 302 may include a TIA chip 322. The TIA chip 322 may be bonded to the circuit board 300 by silver glue to fix and dissipate heat, and then the bare chip and the circuit board 300 may be connected by gold wire bonding.

[0092] As shown in Figure 6, in some embodiments, a first lens 912 is provided on the side of the optical transceiver component 900 facing the circuit board 300. The first lens 912 can be located above the optical chip 301 to collimate the light beam emitted by the optical transmitter chip 311 and couple the light beam to be incident on the optical receiver chip 312.

[0093] In some embodiments, a reflective surface 9131 may be provided on the side of the optical transceiver component 900 facing away from the circuit board 300. The reflective surface 9131 may be located above the first lens 912 to change the transmission direction of the incident light beam. For example, a light beam that is transmitted vertically upward (i.e., the light beam collimated by the first lens 912) is reflected by the reflective surface 9131 and becomes a light beam that is transmitted horizontally to the right. A light beam that is transmitted horizontally to the left is reflected by the reflective surface 9131 and becomes a light beam that is transmitted vertically downward (i.e., the light beam that is incident on the first lens 912).

[0094] In some embodiments, a second lens 915 may be provided on the side of the optical transceiver 900 facing the optical port. The second lens 915 may be located between the reflective surface 9131 and the optical fiber to couple the light beam reflected by the reflective surface 9131 to the optical fiber and collimate the reflected light beam transmitted by the optical fiber.

[0095] In some examples, the light emitting chip 311 emits a light beam upward, which is collimated by the emission collimating lens of the first lens 912. The collimated light beam is reflected by the reflecting surface 9131, and the reflected light beam is coupled by the emission coupling lens of the second lens 915 to be incident on the optical fiber.

[0096] In some examples, the light beam transmitted by the optical fiber is collimated by the receiving collimating lens of the second lens 915, the collimated light beam is reflected by the reflecting surface, the reflected light beam is vertically downward, and is coupled by the receiving coupling lens of the first receiving lens 912 to be vertically incident on the light receiving chip 312.

[0097] FIG7 is an exploded view of an optical transceiver component according to some embodiments of the present disclosure. As shown in FIG5 , FIG6 and FIG7 , in some embodiments, the optical transceiver component 900 may include a lens assembly 901. The lens assembly 901 may be mounted on the circuit board 300.

[0098] In some examples, a cover groove 911 can be provided at the bottom of the lens assembly 901. The cover groove 911 can be formed by a recess in the side of the lens assembly 901 facing the circuit board 300, facing away from the circuit board 300. The cover groove 911 and the circuit board 300 can form a cover cavity. The optical chip 301 and the optical matching chip 302 can be disposed in the cover cavity.

[0099] In some examples, a groove (not shown) may be provided on the circuit board 300. The lens assembly 901 may be covered on the groove.

[0100] In some examples, the lens assembly 901 is covered on the groove, and the lens assembly 901 and the circuit board 300 together form a covering cavity.

[0101] In some examples, the optical chip 301 can be disposed in the groove.

[0102] In some examples, the optical matching chip 302 can be disposed in the groove.

[0103] In some examples, the top of the lens assembly 901 may be provided with an optical port 913. The optical port 913 may be formed by a side of the lens assembly 901 facing away from the circuit board 300 being recessed toward the circuit board 300. The sidewalls of the optical port 913 may be provided as reflective surfaces 9131.

[0104] In some examples, a housing cavity 914 may be provided at one end of the lens assembly 901. The housing cavity 914 may have an opening. A second lens 915 may be provided within the housing cavity 914.

[0105] In some examples, the enclosure cavity 914 may include a polygonal cavity.

[0106] In some examples, the enclosure cavity 914 may include a cylindrical cavity.

[0107] 6 and 7 , in some embodiments, the optical transceiver component 900 may include an optical fiber array 902 . One end of the optical fiber array 902 may be inserted into the encapsulating cavity 914 through an opening of the encapsulating cavity 914 , so that the optical fiber array 902 is optically connected to the lens assembly 901 .

[0108] FIG8 is a structural diagram of an optical fiber array provided according to some embodiments of the present disclosure at one viewing angle. FIG9 is a structural diagram of an optical fiber array provided according to some embodiments of the present disclosure at another viewing angle. As shown in FIG8 and FIG9 , in some embodiments, the optical fiber array 902 may include an optical fiber 922. The end face of the optical fiber 922 may be located at the focal point of the second lens 915 so that the optical fiber 922 is optically connected to the second lens 915, thereby coupling the light beam through the second lens 915 and incident on the optical fiber 922. Alternatively, the second lens 915 collimates the light beam transmitted by the optical fiber 922.

[0109] In some examples, optical fiber array 902 may include a single optical fiber 922 .

[0110] In some examples, optical fiber array 902 may include multiple optical fibers 922 .

[0111] In the following, the optical fiber array 902 including multiple optical fibers 922 is taken as an example for description.

[0112] In some embodiments, one end of the optical fiber array 902 may include a distal end surface of the optical fiber holder 921 .

[0113] In some embodiments, one end of the optical fiber array 902 may include a partial area of ​​a side surface of the optical fiber holder 921 connected to the end surface of the optical fiber holder 921 .

[0114] In some examples, due to the presence of a gap between the second lens 915 and the fiber end face of the optical fiber 922, when the optical signal is incident from the second lens 915 to the fiber end face of the optical fiber, the optical signal is easily reflected at the fiber end face of the optical fiber due to changes in the medium, causing the reflected optical signal to re-enter the lens assembly 901 along the original path, causing optical signal interference.

[0115] To address this issue, in some embodiments, the fiber end face of optical fiber 922 can be configured as a bevel. When the optical signal reflected by lens assembly 901 hits the fiber end face of optical fiber 922, the reflected light is reflected elsewhere based on the angle of the bevel, rather than returning to lens assembly 901 along its original path. This reduces interference from reflected light.

[0116] In some embodiments, the angle between the fiber end face of the optical fiber 922 and the side face of the optical fiber 922 can be 3 to 13 degrees. For example, the angle between the fiber end face of the optical fiber 922 and the side face of the optical fiber 922 is 3 to 8 degrees, the angle between the fiber end face of the optical fiber 922 and the side face of the optical fiber 922 is 9 to 13 degrees, and the angle between the fiber end face and the opposite fiber side face is 8 degrees.

[0117] As shown in Figures 8 and 9, in some embodiments, the optical fiber array 902 may include an optical fiber holder 921. The optical fiber holder 921 may encase an optical fiber 922, so that the optical fiber 922 and the optical fiber holder 921 form the optical fiber array 902. The optical fiber holder 921 may be inserted into the lens assembly 901 through the opening of the encapsulation cavity 914 to achieve connection between the optical fiber array 902 and the lens assembly 901.

[0118] In some examples, the optical fiber support 921 may be provided with a positioning hole 9215. The positioning hole 9215 may be provided opposite to the positioning post of the lens assembly 901. The positioning post of the lens assembly 901 may be inserted into the positioning hole 9215 to position and install the optical fiber array 902.

[0119] In some examples, the positioning hole 9215 can pass through the optical fiber holder 921 .

[0120] In some examples, the positioning hole 9215 may include a first positioning hole 9215a.

[0121] In some examples, the positioning hole 9215 may include a second positioning hole 9215b.

[0122] In some examples, the end face of the optical fiber holder 921 may be provided with an optical fiber hole. The front end face of the optical fiber holder 921 (the side opposite to the end face of the optical fiber holder 921) is provided with an optical fiber jack. The optical fiber jack can be connected to the optical fiber hole so that the optical fiber 922 can be inserted into the optical fiber hole through the optical fiber jack, thereby allowing the optical fiber 922 to cross the optical fiber holder 921. The light entrance surface of the optical fiber 922 can be located inside the optical fiber holder 921, or it can protrude from the end face of the optical fiber holder 921.

[0123] In some embodiments, the optical fiber 922 may include a first optical fiber, which may be arranged corresponding to the emission coupling lens of the second lens 915 so that the optical signal emitted by the emitting optical chip is coupled to the first optical fiber via the emission coupling lens of the second lens 915 .

[0124] The number of the first optical fiber is at least 1. The number of the emission coupling lenses is at least 1. The number of the first optical fiber is the same as the number of the emission coupling lenses, so that the first optical fibers and the emission coupling lenses are arranged in a one-to-one correspondence.

[0125] In some embodiments, the optical fiber 922 may include a second optical fiber, which may be arranged corresponding to the receiving collimating lens of the second lens 915 so that the light of the second optical fiber is collimated by the receiving collimating lens of the second lens 915 and then incident on the light receiving chip.

[0126] The number of the second optical fibers is at least 1. The number of the receiving collimating lenses is at least 1. The number of the second optical fibers is the same as the number of the receiving collimating lenses, so that the second optical fibers and the receiving collimating lenses are arranged in a one-to-one correspondence.

[0127] Insert the optical fiber 922 into the optical fiber holder 921 through the optical fiber jack, and use sealing glue to seal all the gaps between the optical fiber 922 and the optical fiber jack. The sealing glue is added to the periphery of the contact between the optical fiber 922 and the optical fiber jack, and is accumulated on the front end faces of the optical fiber 922 and the optical fiber holder 921. After the sealing glue is cured, a sealing colloid is formed to prevent the cooling liquid from extending into the interior of the optical fiber holder 921 through the optical fiber jack.

[0128] In some examples, the upper end of the optical fiber holder 921 may be provided with an observation hole 9212 . The observation hole 9212 may be communicated with the optical fiber hole in the optical fiber holder 921 , so that the insertion of the optical fiber 922 into the optical fiber holder 921 can be viewed through the observation hole 9212 .

[0129] In some examples, after the optical fiber 922 is inserted into the optical fiber holder 921 through the optical fiber jack, sealing glue can be added to the observation hole 9212 to form a sealing colloid, thereby sealing the observation hole 9212 through the sealing colloid to prevent the coolant from penetrating into the interior of the optical fiber holder 921 through the observation hole 9212.

[0130] 8 and 9 , the optical fiber holder 921 may include a first end surface 9211 . The first end surface 9211 may be a terminal end surface of the optical fiber holder 921 .

[0131] In some embodiments, the end face of optical fiber 922 protrudes from the end face (i.e., first end face 9211) of optical fiber holder 921. Through a cutting process, the end face of optical fiber 922 is directly cut, so that the end face of optical fiber 922 is an inclined surface. For optical fiber array 902 in this case, the end face of its optical fiber holder 921 does not need to be set as an inclined surface.

[0132] In some embodiments, the fiber end face of the optical fiber 922 does not protrude from the end face (ie, the first end face 9211 ) of the optical fiber holder 921 .

[0133] In some embodiments, the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 can be polished separately by a polishing process so that both the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 are beveled surfaces.

[0134] In some examples, the inclination angles of the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 may be different, that is, the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 may not be parallel.

[0135] In some examples, the inclination angles of the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 may be the same, that is, the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 may be parallel.

[0136] The fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber bracket 921 have the same inclination angle, which facilitates the processing of the optical fiber array 902 and also facilitates the mutual cooperation between the optical fiber 922 of the optical fiber array 902 and the second lens 915 of the lens assembly 901.

[0137] In some examples, during the process of polishing the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 , only the area where the fiber end face of the optical fiber is located in the first end face 9211 of the optical fiber holder 921 is polished.

[0138] In some examples, for a thinner optical fiber holder, the first end surface 9211 of the optical fiber holder 921 can be completely ground without leaving any step surface.

[0139] In some examples, the first end surface 9211 of the optical fiber holder 921 can include a polished surface, wherein the polished surface is an inclined surface. As shown in Figures 8 and 9, the first end surface 9211 can be a polished surface, and the vertical distance between the upper edge of the first end surface 9211 and the fifth side surface 9216b is greater than the vertical distance between the lower edge of the first end surface 9211 and the fifth side surface 9216b, so that the first end surface 9211 is tilted relative to the circuit board 300.

[0140] In some examples, for a thicker optical fiber holder, the first end surface 9211 of the optical fiber holder 921 may not be completely ground, so there may be a step surface.

[0141] In some examples, the first end surface 9211 of the optical fiber holder 921 may include a stepped surface. The angles of the polished surface and the stepped surface may be different.

[0142] In some examples, the polished surface may be a beveled surface.

[0143] In some examples, the step surface may be a vertical surface.

[0144] As shown in FIG8 and FIG9 , the optical fiber support 921 may include a first side surface 9214 a , one end of which may be connected to one end of the first end surface 9211 .

[0145] As shown in Figures 8 and 9, the optical fiber holder 921 may include a second side surface 9216a. One end of the second side surface 9216a may be connected to the other end of the first side surface 9214a. The angle between the second side surface 9216a and the first side surface 9214a is greater than 0°, so that the second side surface 9216a and the first side surface 9214a form a first notch 9213a. For example, the angle between the second side surface 9216a and the first side surface 9214a is 90°, that is, the second side surface 9216a is perpendicular to the first side surface 9214a.

[0146] As shown in Figures 8 and 9, the optical fiber support 921 may include a third side surface 9217a. One end of the third side surface 9217a may be connected to the other end of the second side surface 9216a. The third side surface 9217a protrudes outward relative to the first side surface 9214a so that the first notch 9213a is less than or equal to 90 degrees, thereby causing the first notch 9213a to face the lens assembly 901.

[0147] As shown in FIG8 and FIG9 , the optical fiber support 921 may include a fourth side surface 9214 b , one end of which may be connected to the other end of the first end surface 9211 .

[0148] As shown in Figures 8 and 9, the optical fiber holder 921 may include a fifth side surface 9216b. One end of the fifth side surface 9216b may be connected to the other end of the fourth side surface 9214b. The angle between the fifth side surface 9216b and the fourth side surface 9214b is greater than 0°, so that the fifth side surface 9216b and the fourth side surface 9214b enclose a second gap 9213b.

[0149] For example, the angle between the fifth side surface 9216b and the fourth side surface 9214b is 90°, that is, the fifth side surface 9216b and the fourth side surface 9214b are arranged perpendicularly.

[0150] As shown in Figures 8 and 9, the optical fiber support 921 may include a sixth side surface 9217b. One end of the sixth side surface 9217b may be connected to the other end of the fifth side surface 9216b. The sixth side surface 9217b protrudes outward relative to the fifth side surface 9216b, such that the second notch 9213b is less than or equal to 90 degrees, thereby aligning the first notch 9213a toward the lens assembly 901.

[0151] The first notch 9213a and the second notch 9213b can be located on both sides of the optical fiber holder 921, and the first notch 9213a and the second notch 9213b can form a notch 9213 to facilitate gripping the optical fiber holder 921 when processing the optical fiber array 902. The notch 9213 can face the lens assembly 901.

[0152] FIG10 is a structural diagram of a lens assembly provided according to some embodiments of the present disclosure at a certain viewing angle. As shown in FIG10 , in some embodiments, a first lens 912 may be disposed at the top of a cover groove 911 of a lens assembly 901 .

[0153] In some examples, the first lens 912 may include an emission collimating lens 9121. The emission collimating lens 9121 may be located above the light emitting chip 311. The emission collimating lens 912 may collimate the light beam emitted by the light emitting chip 311.

[0154] In some examples, the first lens 912 may include a receiving coupling lens 9122 . The receiving coupling lens 9122 may be located above the optical receiving chip 312 . The receiving coupling lens 9122 may couple the light beam reflected by the reflective surface 9131 to be incident on the optical receiving chip 312 .

[0155] In some examples, the surface where the emitting collimating lens 9121 is located can be higher than the height of the receiving coupling lens 9122, so that the reflected light beam emitted from the light-emitting surface of the light-emitting chip 311 is collimated by the first lens 912 and the received light beam is coupled to be incident on the photosensitive surface of the light-receiving chip 312.

[0156] Figure 11 is a structural diagram of a lens assembly provided according to some embodiments of the present disclosure at another viewing angle. Figure 12 is a cross-sectional view of a lens assembly provided according to some embodiments of the present disclosure at one viewing angle. Figure 13 is a cross-sectional view of an optical transceiver component provided according to some embodiments of the present disclosure at one viewing angle. As shown in Figures 11, 12 and 13, in some embodiments, a positioning post 916 may be provided in the wrapping cavity 914. The positioning post 916 may be provided corresponding to the positioning hole 9215 of the optical fiber bracket 921, so that the positioning post 916 is inserted into the positioning hole 9215, thereby realizing the connection between the optical fiber array 902 and the lens assembly 901 in the up-down direction (the height direction of the lens assembly 901) and the front-to-back direction (the width direction of the lens assembly 901).

[0157] In some examples, the positioning post 916 may include a first positioning post 9161. The first positioning post 9161 may be disposed corresponding to the first positioning hole 9215a, such that the first positioning post 9161 is inserted into the first positioning hole 9215.

[0158] In some examples, the positioning post 916 may include a second positioning post 9162. The second positioning post 9162 may be disposed corresponding to the second positioning hole 9215b, such that the second positioning post 9162 is inserted into the second positioning hole 9215b.

[0159] As shown in Figures 11, 12, and 13, in some embodiments, a second lens 915 may be disposed in the packaging cavity 914. The second lens 915 may be located between the first positioning post 9161 and the second positioning post 9162.

[0160] The second lens 915 may include an emission coupling lens 9151 . The emission coupling lens 9151 may couple the light beam reflected by the reflection surface 9131 to allow the light beam to be incident on the fiber end face of the optical fiber 922 .

[0161] The second lens 915 may include a receiving collimating lens 9152. The receiving collimating lens 9152 may collimate the light beam in the optical fiber 922.

[0162] As shown in FIG. 11 , in some embodiments, the wrapping cavity 914 may include a support plate 9148 .

[0163] As shown in FIG11 , FIG12 and FIG13 , in some embodiments, the wrapping cavity 914 may include a avoidance plate, which may be connected to the support plate 9148 .

[0164] As shown in Figures 11, 12, and 13, in some embodiments, the avoidance plate may include a first avoidance plate 9141. The first avoidance plate 9141 may be connected to one side of the support plate 9148. The first avoidance plate 9141 may be disposed corresponding to the sixth side surface 9217b of the optical fiber bracket 921.

[0165] As shown in Figures 11, 12, and 13, the avoidance plate may include a second avoidance plate. The second avoidance plate may be disposed opposite the first avoidance plate 9141. The second avoidance plate may be connected to the other side of the support plate 9148. The second avoidance plate may be disposed corresponding to the third side surface 9217a of the optical fiber bracket 921.

[0166] The first avoidance plate 9141, the support plate 9148 and the second avoidance plate can form a U-shaped first storage groove.

[0167] As shown in Figures 11, 12, and 13, in some embodiments, the wrapping cavity 914 may include a limiting plate 9142. The limiting plate 9142 may be connected to the support plate 9148. The limiting plate 9142 may be disposed corresponding to the notch 9213 of the optical fiber bracket 921.

[0168] The first side surface of the limiting plate 9142 may be connected to the avoidance plate. The first side surface of the limiting plate 9142 may be disposed corresponding to the second side surface 9216a of the optical fiber bracket 921 or the fifth side surface 9216b of the optical fiber bracket 921.

[0169] The second side surface of the limiting plate 9142 may be away from the avoidance plate. The second side surface of the limiting plate 9142 may be disposed corresponding to the first side surface 9214a of the optical fiber bracket 921 or the fourth side surface 9214b of the optical fiber bracket 921.

[0170] In some embodiments, the limiting plate 9142 may include a first limiting plate 9142a. A first side surface of the first limiting plate 9142a may be connected to the second avoidance plate. The first limiting plate 9142a may be disposed corresponding to the first notch 9213a of the optical fiber bracket 921.

[0171] In some embodiments, the limiting plate 9142 may include a second limiting plate 9142b. The second limiting plate 9142b may be positioned corresponding to the second notch 9213b of the optical fiber holder 921. One side of the second limiting plate 9142b may be connected to the first avoidance plate 9141. The second limiting plate 9142b and the first limiting plate 9142a may be located on opposite sides of the encapsulation cavity 914.

[0172] The first limiting plate 9142a, the supporting plate 9148 and the second limiting plate 9142b can form a U-shaped second storage groove.

[0173] In some embodiments, the second side surface of the limiting plate 9142 may protrude inward relative to the avoidance plate to reduce the width of the first storage hole.

[0174] In some embodiments, the second side surface of the first limiting plate 9142a may protrude inward relative to the first avoidance plate.

[0175] In some embodiments, the second side surface of the second limiting plate 9142b may protrude inward relative to the second avoidance plate.

[0176] The second side surface of the first limiting plate 9142a can protrude inward relative to the first avoidance plate, and the second side surface of the second limiting plate 9142b can protrude inward relative to the second avoidance plate to reduce the width of the first storage hole.

[0177] As shown in FIG11 , in some embodiments, the wrapping cavity 914 may include a cover 9147 . The cover 9147 may be disposed opposite to the support plate 9148 . The cover 9147 may be connected to the limiting plate 9142 .

[0178] The first limiting plate 9142a, the supporting plate 9148, the second limiting plate 9142b and the cover 9147 can form a U-shaped storage hole.

[0179] As shown in Figures 11, 12, and 13, in some embodiments, the wrapping cavity 914 may include a stop protrusion 9143. The stop protrusion 9143 may be located outside the positioning post 916, that is, the stop protrusion 9143 is located outside the first positioning post 9161 and the second positioning post 9162. The stop protrusion 9143 may be arranged corresponding to the first end face 9211 of the optical fiber holder 921. The stop surface of the stop protrusion 9143 may contact the first end face 9211 of the optical fiber holder 921, so that the stop protrusion 9143 can contact and connect with the first end face 9211 of the optical fiber holder 921, thereby stopping the optical fiber holder 921 there. One side surface (i.e., the stop surface) of the stop protrusion 9143 may be connected to the other side surface of the limiting plate 9142.

[0180] The first end surface of the optical fiber bracket 921 protrudes relative to the notch 9213 , and the stop protrusion 9143 is recessed inward relative to the limiting plate 9142 , so that the optical fiber bracket 921 and the wrapping cavity 914 cooperate with each other.

[0181] As shown in FIG11 , in some embodiments, the stop protrusion 9143 may be provided with an avoidance opening 9149 . The avoidance opening 9149 faces the positioning post 916 , so that the stop protrusion 9143 avoids the positioning post 916 and increases the area of ​​the stop protrusion 9143 .

[0182] The stop protrusion 9143 may include a first stop protrusion 9143a. The first stop protrusion 9143a may be located outside the first positioning post 9161 and the second positioning post 9162. The stop surface of the first stop protrusion 9143a may contact and connect with a portion of the first end surface of the optical fiber holder 921, thereby causing the optical fiber holder 921 to stop there. The stop surface of the first stop protrusion 9143a faces a side surface of the optical fiber holder 921.

[0183] The stop protrusion 9143 may include a second stop protrusion 9143b. The second stop protrusion 9143b may be located outside the first positioning post 9161 and the second positioning post 9162. The stop surface of the second stop protrusion 9143b may contact and connect with a portion of the first end surface of the optical fiber holder 921, so that the second stop protrusion 9143b can contact and connect with another portion of the first end surface of the optical fiber holder 921, thereby stopping the optical fiber holder 921 at this portion. The stop surface of the second stop protrusion 9143b faces a side surface of the optical fiber holder 921.

[0184] The first end face of the optical fiber bracket 921 is in contact and connected with the stop face of the first stop protrusion 9143a and the stop face of the second stop protrusion 9143b respectively, so as to increase the contact area between the first end face of the optical fiber bracket 921 and the stop protrusion 9143, thereby improving the connection stability between the optical fiber bracket 921 and the lens assembly 901.

[0185] As shown in Figures 11, 12, and 13, in some embodiments, the wrapping cavity 914 may include a storage protrusion 9144. One side (fixing surface) of the storage protrusion 9144 may be connected to the other side (non-stop surface) of the stop protrusion 9143. A positioning post 916 may be fixedly mounted on the storage protrusion 9144 to facilitate control of its direction.

[0186] The storage protrusion 9144 may include a first storage protrusion 9144a. One side surface (fixing surface) of the first storage protrusion 9144a may be connected to the other side surface (non-stop surface) of the first stop protrusion 9143a. A first positioning post 9161 may be fixedly mounted on the first storage protrusion 9144a.

[0187] The storage protrusion 9144 may include a second storage protrusion 9144b. One side surface (fixing surface) of the second storage protrusion 9144b may be connected to the other side surface (non-stop surface) of the second stop protrusion 9143b. A second positioning post 9162 may be fixedly mounted on the second storage protrusion 9144b.

[0188] As shown in Figures 11, 12, and 13, in some embodiments, the package cavity 914 may include a storage surface. One end of the storage surface may be connected to the storage protrusion. The storage surface may be used to place a second lens 915. The second lens 915 may be located on one side of the positioning post 916.

[0189] The second lens 915 and the stop protrusion 9143 may be located on both sides of the positioning column 916 .

[0190] In some embodiments, the storage surface may be a first storage surface 9145. One end of the first storage surface 9145 may be connected to the other side of the second storage protrusion 9144b. A receiving collimating lens 9152 may be fixedly mounted on the first storage surface 9145.

[0191] In some embodiments, the storage surface includes a second storage surface 9146. One end of the second storage surface 9146 can be connected to the other side surface of the first storage protrusion 9144a. An emission coupling lens 9151 can be fixedly mounted on the second storage surface 9146.

[0192] A step surface may be provided between the second placement surface 9146 and the first placement surface 9145 so that the second placement surface 9146 is recessed inward relative to the first placement surface 9145 , thereby compensating for the focal length of the second lens 915 .

[0193] The packaging cavity without the cover 9147 can accommodate both thinner and thicker optical fiber holders. The packaging cavity with the cover 9147 can accommodate thinner optical fiber holders.

[0194] In some embodiments, the stopping surface of the stopping protrusion 9143 may be a vertical surface, that is, the stopping surface of the stopping protrusion 9143 and the circuit board 300 are perpendicular to each other.

[0195] For thicker fiber holders, the size of the stepped surface of first end face 9211 can vary after polishing. Furthermore, the first end face of fiber holder 921 contacts the stop surface of stop protrusion 9143. This introduces a new problem: the size of the stepped surface of first end face 9211 affects the distance L between the vertex of second lens 915 and the end face of optical fiber 922. Varying L results in inconsistent distances between the optimal light spot and the end face of the optical fiber. Consequently, the actual light spot sizes at the end faces of the optical fibers vary, leading to poor specification consistency in the optical modules.

[0196] In order to solve the problem of poor consistency in specifications of optical modules, in some embodiments, the stop surface of the stop protrusion 9143 may be a non-vertical surface.

[0197] In some embodiments, the stop surface of the stop protrusion 9143 may include a first stop portion. The first stop portion may be located in an area above the center point of the positioning post 916 in the stop surface of the stop protrusion 9143 .

[0198] In some examples, the first stopping portion may be an inclined surface.

[0199] In some examples, the first stopping portion may be a recess.

[0200] In some examples, the first stopping portion may be a step.

[0201] In some embodiments, the stop surface of the stop protrusion 9143 may include a second stop portion. The second stop portion may be located in the area below the center point of the positioning post 916 on the stop surface of the stop protrusion 9143. The second stop portion may be a vertical surface or an inclined surface.

[0202] The distance between the first stop portion and the opening of the wrapping cavity 914 can be greater than the distance between the second stop portion and the opening of the wrapping cavity 914, so that when the second stop portion contacts the grinding surface of the first end face 9211, the first stop portion does not contact the step surface of the first end face 9211.

[0203] In some embodiments, the angle of the first stop portion and the angle of the second stop portion can be the same, so that the stop surface of the stop protrusion 9143 formed by the second stop portion and the first stop portion is an inclined surface.

[0204] Due to minor errors in the production process, in some embodiments, the angular difference between the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber holder 921 may be -2° to 2°, so that when the second stop portion contacts the polished surface of the first end surface 9211, the first stop portion does not contact the stepped surface of the first end surface 9211. For example, the angular difference between the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber holder 921 is -2° to 0°, and the angular difference between the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber holder 921 is 0° to 2°.

[0205] The angle difference between the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber bracket 921 is -2° to 2°, which is not easy to cause defocusing, so that the focused light spot falls on the optical fiber end surface of the optical fiber 922 as much as possible, and is not easy to cause optical fluctuations.

[0206] In some embodiments, the angle difference between the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber bracket 921 can be 0°, that is, the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber bracket 921 are parallel inclined surfaces.

[0207] In some examples, for a thinner optical fiber holder, the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber holder 921 are parallel inclined surfaces, which can increase the contact area between the stop surface of the stop protrusion 9143 and the first end surface 9211 of the optical fiber holder 921, so as to improve the connection stability between the optical fiber holder 921 and the lens assembly 901 in the left and right direction (i.e., the length direction of the lens assembly 901).

[0208] In some examples, for a thicker optical fiber holder, the stop surface of the stop protrusion 9143 and the first end face 9211 of the optical fiber holder 921 are parallel inclined surfaces to each other, which not only increases the contact area between the stop surface of the stop protrusion 9143 and the first end face 9211 of the optical fiber holder 921 to improve the connection stability between the optical fiber holder 921 and the lens assembly 901 in the left and right directions (i.e., the length direction of the lens assembly 901); but also when the second stop portion contacts the polished surface of the first end face 9211, the first stop portion does not contact the step surface of the first end face 9211, so that the optimal light spot is at the same distance from the optical fiber end face, avoiding defocusing, and thereby making the focused light spot fall completely on the optical fiber end face.

[0209] The stop surface of the stop protrusion 9143 is at the same angle as the first end face 9211 of the optical fiber bracket 921, and the first end face 9211 of the optical fiber bracket 921 is at the same angle as the optical fiber end face of the optical fiber 922, so that the stop surface of the stop protrusion 9143, the first end face 9211 of the optical fiber bracket 921 and the optical fiber end face of the optical fiber 922 are all at the same angle.

[0210] For example, the angles between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber holder 921, and the end surface of the optical fiber 922 are all 3 to 13 degrees. The angles between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber holder 921, and the end surface of the optical fiber 922 are 3 to 8 degrees, the angles between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber holder 921, and the end surface of the optical fiber 922 are 9 to 13 degrees, and the angles between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber holder 921, and the end surface of the optical fiber 922 are 8 degrees.

[0211] Figure 14 is a cross-sectional view of a lens assembly according to some embodiments of the present disclosure from another perspective. As shown in Figure 14 , the stop surface of the first stop protrusion 9143a (ie, the surface facing the optical fiber bracket 921) is an inclined surface.

[0212] Figure 15 is a cross-sectional view of an optical transceiver component provided in accordance with some embodiments of the present disclosure from another perspective. As shown in Figure 15 , the first end surface 9211 of the optical fiber bracket 921 is an inclined surface.

[0213] As shown in FIG. 15 , the first end surface 9211 of the optical fiber holder 921 stops at the first stop protrusion 9143 a , and then the first end surface 9211 of the optical fiber holder 921 stops at the stop protrusion 9143 .

[0214] In some embodiments, an optical module includes a circuit board, a lens assembly, and a fiber optic holder. The circuit board is mounted with an optical chip, and the lens assembly is mounted over the optical chip. A first lens is disposed on the inner surface of the lens assembly facing the optical chip, and a reflective surface is disposed on the outer surface of the lens assembly facing away from the circuit board. A wrapping cavity is disposed at one end of the lens assembly, within which a second lens and a positioning post are disposed, with the second lens positioned to one side of the positioning post. The fiber optic holder encases the optical fiber. A positioning hole is disposed on the first end face of the optical fiber holder, into which the positioning post is inserted to connect the optical fiber holder to the lens assembly along the width and height of the lens assembly. A gap exists between the optical fiber end face and the second lens. When the light signal passes through the second lens and enters the optical fiber end face, it is reflected. To address this issue, the optical fiber end face is processed into a beveled surface. Because the optical fiber end face is beveled relative to the optical fiber side face, the reflected light is reflected elsewhere based on the angle of the optical fiber end face, rather than returning along the original path, thereby preventing interference with the optical chip. Since the end face of the optical fiber does not protrude from the first end face of the optical fiber holder, in order to process the optical fiber end face of the optical fiber into a bevel, it is necessary to grind both the first end face of the optical fiber holder and the optical fiber so that the optical fiber end face of the optical fiber and the first end face of the optical fiber holder are both bevels. The wrapping cavity includes a stop protrusion, which is located on the other side of the positioning post. The side of the stop protrusion facing the optical fiber holder is a stop surface, and the stop surface is in contact with the first end face so that the optical fiber holder stops in front of the stop surface, thereby realizing the connection between the optical fiber holder and the lens assembly along the length direction of the lens assembly. In some embodiments, the optical fiber holder and the lens assembly are connected along the width and height directions of the lens assembly through the positioning post and the positioning hole, and the connection between the optical fiber holder and the lens assembly along the length direction of the lens assembly is realized by the stop surface and the first end face of the optical fiber holder being bevels.

[0215] In some examples, the packaging cavity can be a cylindrical cavity.

[0216] In some examples, the optical fiber array can include a single optical fiber.

[0217] In some examples, the lens assembly may include a first lens assembly. The first lens assembly may be disposed on the light emitting chip. The first lens assembly may be coupled to an optical fiber.

[0218] In some examples, the lens assembly may include a second lens assembly. The second lens assembly may be disposed over the optical transmitter chip. In this way, the optical module may transmit multiple optical signals.

[0219] In some examples, the second lens assembly can be disposed on the light receiving chip and can be coupled to an optical fiber.

[0220] For ease of explanation, the following detailed description is given by taking the wrapping cavity as a cylindrical cavity as an example.

[0221] FIG16 is an assembly diagram of a circuit board, a first lens assembly, and a second lens assembly according to some embodiments of the present disclosure. FIG17 is an optical path diagram of the first lens assembly according to some embodiments of the present disclosure. FIG18 is an exploded view of a circuit board, a first lens assembly, and a second lens assembly according to some embodiments of the present disclosure. As shown in FIG16 , FIG17 and FIG18 , the optical emitting component may include a first lens assembly 400 and a first optical fiber adapter, one end of the first optical fiber adapter being optically connected to the first lens assembly 400, and one end of the first optical fiber adapter being optically connected to an external optical fiber, and the optical signal emitted by the optical emitting chip 311 is reflected by the first lens assembly 400 and then transmitted to the first optical fiber adapter, thereby emitting an optical signal to the outside.

[0222] The optical receiving component includes a second lens assembly 500 and a second optical fiber adapter. One end of the second optical fiber adapter is optically connected to the second lens assembly 500, and one end of the second optical fiber adapter is optically connected to the external optical fiber. The optical signal from the external optical fiber is transmitted to the second lens assembly through the second optical fiber adapter. The optical signal is reflected by the second lens assembly 500 and then emitted to the optical receiving chip 312, thereby receiving the external optical signal.

[0223] FIG19 is a structural diagram of a first lens assembly provided according to some embodiments of the present disclosure at a first viewing angle. FIG20 is a cross-sectional view of a first lens assembly provided according to some embodiments of the present disclosure. In some examples as shown in FIG19 and FIG20 , a through hole 450 is provided between the optical cavity (in some examples, it may also be referred to as a wrapping cavity) 480 of the lens body 410 and the reflector (in some examples, it may also be referred to as a reflective surface) 430. The through hole 450 connects the reflector 430 and the optical cavity 480, and a second lens 440 is provided at one end of the through hole 450 close to the reflector 430. The diameter of the through hole 450 may be smaller than the diameter of the optical cavity 480, so that a step surface is formed at the connection between the through hole 450 and the optical cavity 480, and the step surface may be a core stop surface (in some examples, it may also be referred to as a stop surface) 460.

[0224] In some embodiments, the ferrule stop surface 460 includes a first ferrule stop portion (in some examples, it may also be referred to as a first stop portion) 461 and a second ferrule stop portion (in some examples, it may also be referred to as a second stop portion) 462. The first ferrule stop portion 461 is located above the through hole 450, and the second ferrule stop portion 462 is located below the through hole 450.

[0225] A glue dispensing groove 470 is also provided on the lens body 410 , and the glue dispensing groove 470 is connected to the optical cavity 480 and is used for injecting glue into the optical cavity 480 through the glue dispensing groove 470 .

[0226] In some embodiments, the glue dispensing groove 470 includes a first glue dispensing groove 471 and a second glue dispensing groove 472. The first glue dispensing groove 471 and the second glue dispensing groove 472 are arranged opposite to each other, with the opening of the first glue dispensing groove 471 facing upward and the opening of the second glue dispensing groove 472 facing downward. The opening of the first glue dispensing groove 471 faces upward, so that glue can be applied to the upper outer surface of the ferrule through the first glue dispensing groove 471 with the opening facing upward, so that the upper part of the ferrule is bonded to the inner side surface of the optical cavity 480 through the glue. The opening of the second glue dispensing groove 472 faces downward, so that glue can be applied to the lower outer surface of the ferrule through the second glue dispensing groove 472 with the opening facing downward, so that the lower part of the ferrule is bonded to the inner side surface of the optical cavity 480 through the glue. By applying glue to the outer surface of the ferrule through the first glue dispensing groove 471 and the second glue dispensing groove 472 arranged opposite to each other, glue can be applied to the outer surface of the ferrule without rotating the ferrule, thereby improving the connection strength between the ferrule and the optical cavity 480.

[0227] FIG21 is a structural diagram of a ferrule provided according to some embodiments of the present disclosure. FIG22 is a cross-sectional view of the assembly of a first lens assembly and a ferrule provided according to some embodiments of the present disclosure. As shown in FIG21 and FIG22, the ferrule 490 is inserted into the optical cavity 480 of the lens body 410, and the end surface of the ferrule 490 facing the second lens 440 contacts the ferrule stop surface 460. In this way, the second lens 440 focuses the optical signal into a light spot that falls on the optical fiber 493 of the ferrule 490. After the ferrule 490 is inserted into the optical cavity 480 and its end surface contacts the ferrule stop surface 460, glue is injected into the optical cavity 480 through the glue dispensing groove 470 and applied to the outer surface of the ferrule 900. The glue fixes the outer surface of the ferrule 900 to the inner surface of the optical cavity 480, thereby fixing the ferrule 900 in the optical cavity 480.

[0228] After being inserted into the optical cavity 480 through the opening at one end, the ferrule 490 continues to move leftward along the optical cavity 480 until its end surface contacts the ferrule stop surface 460. The side 492 of the ferrule 490, facing away from the second lens 440, is perpendicular to the circuit board 300 and closely contacts the internal optical fiber inserted into the optical cavity 480, establishing a connection between the ferrule 490 and the internal optical fiber. This allows the light beam emitted from the second lens 440 to converge onto the optical fiber 493 within the ferrule 490 and then be transmitted through the optical fiber 493 to the internal optical fiber, achieving light emission.

[0229] In some embodiments, a ferrule 490 is first pre-installed within the optical cavity 480 of the lens body 410, and the end face of the optical fiber 493 within the ferrule 490 is beveled to prevent the optical signal reflected from the optical fiber end face from returning to the first lens 400 along its original path. The internal optical fiber is then inserted into the optical cavity 480 and physically and tightly docked with the other side face 492 of the ferrule 490. This eliminates the need for any additional processing on the end face of the internal optical fiber inserted into the optical cavity 480; it only needs to be inserted into the optical cavity 480 and docked with the side face 492 of the ferrule 490.

[0230] In some embodiments, the internal optical fiber is inserted into the ferrule 490, and the fiber end face of the internal optical fiber is flush with the end face of the ferrule 490. Then, the ferrule 490 wrapped with the internal optical fiber is inserted into the optical cavity 480 from the opening at one end of the optical cavity, and continues to move to the left along the optical cavity 480 until the end face of the ferrule 490 contacts the ferrule stop surface 460; then, glue is injected into the outer surface of the ferrule 490 through the glue dispensing groove 470, and the glue is applied to the outer surface of the ferrule 490 to fix the outer surface of the ferrule 490 and the inner side surface of the optical cavity 480 by glue, thereby fixing the ferrule 490 in the optical cavity 480.

[0231] The ferrule 490 is made of ceramic material, and the optical fiber 493 is fixed in the optical cavity 480 through the ceramic ferrule. Compared with the plastic parts that wrap the optical fiber 493, the processing precision of the ceramic ferrule is higher. After the ferrule 490 is fixed in the optical cavity 480 by glue, the ferrule 490 is not easy to move, which improves the stability of the optical fiber 493, so that the optical signal emitted by the second lens 440 is better converged in the optical fiber 493, thereby improving the optical signal convergence accuracy.

[0232] In order to make the fiber end face of the optical fiber 493 a bevel, in some embodiments, the optical fiber 493 is built into the ferrule 490 and extends along the end face 491 of the ferrule 490 (i.e., the side of the ferrule 490 facing the ferrule stop surface 460), and the fiber end face of the optical fiber 493 is polished to make the fiber end face a bevel.

[0233] Ferrule 490 and ferrule stop surface 460 are both perpendicular to circuit board 300. Optical fiber 493 extends from the end surface of ferrule 490. The end surface of optical fiber 493 is an inclined surface. After the light focused by second lens 440 is reflected by the fiber end surface, it will be reflected to other locations based on the angle of the inclined surface, rather than returning along the original path, thereby reducing the impact of the reflected light on the light emitting chip. When the end surface 491 of ferrule 490 contacts ferrule stop surface 460, the fiber end surface is located within through hole 450, extending the length of through hole 450, that is, ferrule stop surface 460 moves toward the optical cavity, to ensure the distance between second lens 440 and the fiber end surface, that is, the light spot focused by second lens 440 falls on the fiber end surface.

[0234] In order to make the end face of the optical fiber 493 a bevel, in some embodiments, the optical fiber 493 is built into the ferrule 490 and does not extend along the end face 491 of the ferrule 490. The end face of the optical fiber and the end face of the ferrule 490 are respectively polished so that the end face 491 of the ferrule 490 and the end face of the optical fiber are both beveled, and the end face 491 of the ferrule 490 and the end face of the optical fiber are not parallel.

[0235] In order to make the end face of the optical fiber 493 a bevel, in some embodiments, the optical fiber 493 is built into the ferrule 490 and does not extend along the end face 491 of the ferrule 490. The end face of the optical fiber is polished together with the end face 491 of the ferrule 490 so that the end face 491 of the ferrule 490 and the end face of the optical fiber are both beveled, and the end face 491 of the ferrule 490 and the end face of the optical fiber are parallel to each other.

[0236] During the polishing process of the optical fiber end face and the end face 491 of the ferrule 490, the area within the ferrule 490 where the optical fiber resides only needs to be polished. The entire end face 491 of the ferrule 490 may not be completely polished, so a step surface may remain. Specifically, the end face of the ferrule 490 includes a polished surface 4911 and a step surface 4912. The polished surface 4911 and the step surface 4912 have different angles: the polished surface 4911 is an inclined surface, while the step surface 4912 is a vertical surface. The size of the step surface 4912 is not fixed; it is determined based on process requirements to meet the optical fiber end face performance specifications. Because the number of polishing cycles is uncertain, the size of the step surface 4912 remaining after polishing is also variable.

[0237] In some embodiments, the ferrule stop surface 460 is vertical (i.e., the ferrule stop surface 460 and the circuit board 300 are mutually perpendicular), and the end surface 491 of the ferrule 490 contacts the ferrule stop surface 460, that is, the step surface 4912 of the ferrule 490 contacts the ferrule stop surface 460. However, the size of the step surface 4912 left after polishing varies, and the ferrule stop surface 460 and the step surface 4912 contact each other. This introduces a new problem: the size of the step surface 4912 affects the distance L between the vertex of the second lens 440 and the end face of the optical fiber. Varying L results in inconsistent distances between the optimal light spot and the end face of the optical fiber, resulting in varying actual light spot sizes at the end face of the optical fiber, and poor optical module specification consistency.

[0238] In order to solve this problem, the distance between the first ferrule stop portion 461 and the opening of the optical cavity 480 is greater than the distance between the second ferrule stop portion 462 and the opening of the optical cavity 480, so that the second ferrule stop portion 462 contacts the polished surface 4911, and the first ferrule stop portion 461 does not contact the step surface 4912, so that the step size of the end face of the ferrule will not affect the distance between the vertex of the second lens and the end face of the optical fiber, ensuring that the distance between the end face of the optical fiber and the second lens remains unchanged, so that the actual light spot size of the end face of the optical fiber is the same, thereby improving the consistency of the specifications of the optical module.

[0239] In some embodiments, the second ferrule stop portion 462 is a vertical surface, the first ferrule stop portion 461 is an inclined surface, and the distance between the first ferrule stop portion 461 and the opening of the optical cavity 480 is greater than the distance between the second ferrule stop portion 462 and the opening of the optical cavity 480, so that when the second ferrule stop portion 462 contacts the polishing surface 4911, the first ferrule stop portion 461 does not contact the step surface 4912.

[0240] In some embodiments, the second ferrule stop portion 462 is a vertical surface, the first ferrule stop portion 461 is a recess, and the distance between the first ferrule stop portion 461 and the opening of the optical cavity 480 is greater than the distance between the second ferrule stop portion 462 and the opening of the optical cavity 480, so that when the second ferrule stop portion 462 contacts the polishing surface 4911, the first ferrule stop portion 461 does not contact the step surface 4912.

[0241] In some embodiments, the second ferrule stop portion 462 is a vertical surface, the first ferrule stop portion 461 is a plurality of steps, and the distance between the first ferrule stop portion 461 and the opening of the optical cavity 480 is greater than the distance between the second ferrule stop portion 462 and the opening of the optical cavity 480, so that when the second ferrule stop portion 462 contacts the polishing surface 4911, the first ferrule stop portion 461 does not contact the step surface 4912.

[0242] FIG23 is a diagram illustrating an optical path of a reflector according to some embodiments of the present disclosure. As shown in FIG23 , in some embodiments, the reflector 430 includes a first reflector 431, a second reflector 432, and a third reflector 433. The first reflector 431 is disposed directly above the first lens 422 and is configured to reflect the collimated light emitted by the first lens 422, which is perpendicular to the circuit board 300, into collimated light parallel to the circuit board 300. The second reflector 432 is disposed to the right of the first reflector 431 (i.e., closer to the optical port relative to the first reflector 431). The third reflector 433 is disposed behind the second reflector 432, with the central axis of the third reflector 433 coinciding with the central axis of the optical cavity 480. The second reflector 432 is configured to reflect the reflected light parallel to the circuit board 300 to the third reflector 433, which then reflects the collimated light back to the second lens 440.

[0243] After the ferrule 490 is inserted into the optical cavity 480 through the opening at one end thereof, it continues to move leftward along the optical cavity 480 until the end face 491 of the ferrule 490 contacts the ferrule stop surface 460. Because the ferrule 490 has a circular cross-section, it rolls as it moves leftward along the optical cavity 480, requiring multiple placements of the ferrule 490 to ensure contact between the end face 491 of the ferrule 490 and the ferrule stop surface 460.

[0244] FIG24 is a cross-sectional view of another first lens assembly provided according to some embodiments of the present disclosure. FIG25 is a structural diagram of another ferrule provided according to some embodiments of the present disclosure. FIG26 is a cross-sectional view of the assembly of another first lens assembly and another ferrule provided according to some embodiments of the present disclosure. As shown in FIG24, FIG25 and FIG26, in order to solve the above-mentioned problem, in some embodiments, a snap-fit ​​step 481 is provided in the optical cavity 480 of the lens body 410. The snap-fit ​​step 481 is provided in the optical cavity 480, and the snap-fit ​​step 481 is provided corresponding to the snap-fit ​​surface 494. After the ferrule 490 is inserted into the opening of the optical cavity 480, tweezers are used to push the ferrule 490 into the optical cavity 480. When the ferrule 490 is pushed by tweezers, the ferrule 490 may rotate in the optical cavity 480, but the rotation amplitude is small. When the tweezers stop pushing the ferrule 490, the engaging surface 494 of the ferrule 490 engages with the engaging step 481 of the optical cavity 480, achieving close contact between the ferrule 490 and the ferrule stop surface 460. After the ferrule 490 contacts the ferrule stop surface 460, glue is injected into the optical cavity 480 through the glue dispensing groove 470 and applied to the outer surface of the ferrule 490. The glue fixes the outer surface of the ferrule 490 to the inner surface of the optical cavity 480, thereby securing the ferrule 490 within the optical cavity 480.

[0245] In some embodiments, the engaging step 481 is located on the side of the ferrule stop surface 460 and the ferrule 490 away from the ferrule stop surface 460 to ensure that the external circular ferrule inserted into the optical cavity 480 is tightly connected to the optical cavity 480 .

[0246] In some embodiments, the width of the locking step 481 is smaller than the width of the locking surface 494 , and the height of the locking step 481 is smaller than the thickness of the notch of the locking surface 494 corresponding to the ferrule 490 , so as to facilitate the assembly of the ferrule 490 and the optical cavity 480 .

[0247] To secure the ferrule 490 within the optical cavity 480, in some embodiments, a locking step 481 is disposed opposite the glue dispensing groove 470. The locking step 481 engages with the locking surface 494 of the ferrule 490 to secure a portion of the ferrule 490 within the optical cavity 480. Glue is injected into the optical cavity 480 through the glue dispensing groove 470 to secure the remaining portion of the ferrule 490 within the optical cavity 480.

[0248] In some embodiments, the engaging surface 494 is located at the highest point of the end face of the ferrule 490, and the glue dispensing groove 470 includes only the second glue dispensing groove 472, with the second glue dispensing groove 472 opening facing downward. The engaging step 481 engages with the engaging surface 494 located at the highest point of the end face of the ferrule 490 to secure the upper portion of the ferrule 490 to the optical cavity 480. Glue is applied to the lower outer surface of the ferrule 490 through the second glue dispensing groove 472, which opens downward, to secure the lower portion of the ferrule to the optical cavity 480 (i.e., adhere to the inner surface of the optical cavity 480).

[0249] In some embodiments, the engaging surface 494 is located at a low point on the end face of the ferrule 490, and the glue dispensing groove 470 includes only a first glue dispensing groove 471, with the opening of the first glue dispensing groove 471 facing upward. The engaging step 481 engages with the engaging surface 494 located at the low point on the end face of the ferrule 490 to secure the lower portion of the ferrule 490 to the optical cavity 480. Glue is applied to the upper outer surface of the ferrule 490 through the first glue dispensing groove 471, which opens downward, to secure the upper portion of the ferrule to the optical cavity 480 (i.e., adhere to the inner surface of the optical cavity 480).

[0250] Except for the above-mentioned differences, the first lens assembly and the other first lens assembly are the same in other aspects, which will not be described again here.

[0251] The above description only describes the structure of the first lens assembly. To prevent the optical signal from returning along the original path to the optical transmitter chip at the other end of the external optical fiber, in some embodiments, the specific design of the optical cavity of the second lens assembly is the same as that of the first lens assembly.

[0252] In some embodiments, the optical module includes a circuit board and a lens assembly, wherein an optical chip is provided on the circuit board, and the lens assembly cover is provided on the optical chip. A first lens is provided on the inner surface of the lens assembly facing the optical chip, a reflector is provided on the outer surface of the lens assembly facing away from the circuit board, an optical cavity is provided at one end of the lens assembly, and a second lens is provided on the inner surface of the lens assembly facing the optical cavity. A ferrule wrapped around the optical fiber is provided in the optical cavity, and there is a gap between the end face of the optical fiber and the second lens, and the end face of the optical fiber is provided as an inclined surface relative to the opposite side face of the optical fiber. Due to the gap between the end face of the optical fiber and the second lens, the optical signal converged by the second lens is reflected at the end face of the optical fiber. Since the end face of the optical fiber is an inclined surface relative to the opposite side face of the optical fiber, the reflected light will be reflected to other places according to the angle of the end face of the optical fiber, and will not return along the original path, so it will not interfere with the optical chip. In order to limit the position of the ferrule in the lens assembly, a ferrule stop surface is provided at the end of the optical cavity facing the second lens. A through hole is provided between the second lens and the ferrule stop surface. The ferrule end surface includes a stepped surface and a polished surface, with the stepped and polished surfaces at different angles. The ferrule stop surface includes a first ferrule stop portion and a second ferrule stop portion. The first ferrule stop portion is located above the through hole, and the second ferrule stop portion is located below the through hole. The distance between the first ferrule stop portion and the opening of the optical cavity is greater than the distance between the second ferrule stop portion and the opening of the optical cavity. This ensures that the second ferrule stop portion contacts the polished surface, while the first ferrule stop portion does not contact the stepped surface. Consequently, the size of the stepped portion on the ferrule end surface does not affect the distance between the vertex of the second lens and the end face of the optical fiber, ensuring that the distance between the end face of the optical fiber and the second lens remains unchanged. This ensures that the actual spot size of the optical fiber end face is consistent, improving the consistency of optical module specifications. After the ferrule is inserted into the optical cavity through the opening at one end, it continues to move leftward along the optical cavity until the end face of the ferrule contacts the ferrule stop surface. In some embodiments, the first ferrule stop portion is located above the through hole, and the second ferrule stop portion is located below the through hole. The distance between the first ferrule stop portion and the opening of the optical cavity is greater than the distance between the second ferrule stop portion and the opening of the optical cavity, so that the second ferrule stop portion contacts the polished surface and the first ferrule stop portion does not contact the step surface, ensuring that the distance between the optical fiber end face and the second lens remains unchanged, so that the actual light spot size of the optical fiber end face is the same, thereby improving the consistency of the optical module specifications.

[0253] In some examples, the ferrule can be connected to an internal optical fiber, and the internal optical fiber can be optically connected to an external optical fiber via a fiber optic adapter.

[0254] In some examples, the ferrule can be connected to an external optical fiber.

[0255] In some examples, the lens assembly can be disposed on one side of the circuit board.

[0256] In some examples, the fiber optic adapter can be part of the lens assembly. For example, the lens assembly can have an extended portion extending therefrom. The extended portion can be configured as a fiber optic adapter.

[0257] In some examples, the optical cavity can be provided in the optical fiber adapter. The ferrule can be connected to the external optical fiber and then inserted into the optical cavity of the optical fiber adapter.

[0258] To facilitate the cooperation between the optical fiber adapter and the housing, in some examples of the embodiments of the present disclosure, an optical port baffle can be provided in the lower housing, and the optical port baffle cooperates with the optical fiber adapter to facilitate fixing the optical fiber adapter.

[0259] The structure of the housing provided in some embodiments of the present disclosure is described in detail below.

[0260] Figure 27 is a schematic diagram of the lower housing structure according to some embodiments of the present disclosure. Figure 28 is a schematic diagram of the lower housing structure according to some embodiments of the present disclosure. Figure 29 is a schematic diagram of the cross-sectional structure of the lower housing according to some embodiments of the present disclosure. As shown in Figures 27, 28, and 29, the lower housing includes a base plate 2021, a first lower side plate 2022 disposed on one side of the base plate, and a second lower side plate 2023 disposed on the opposite side of the first lower side plate 2022. The lower housing is provided with an optical port baffle 2024, which is located between the first and second lower side plates, with the bottom of the optical port baffle 2024 connected to the base plate. The optical port baffle 2024, the first and second lower side plates, and the base plate together form a semi-enclosed structure. The optical port baffle 2024 divides the lower housing into a first cavity and a second cavity. The upper housing covers the first cavity 2025, forming an optical cavity.

[0261] The light port baffle 2024 is provided with a first adapting through hole 20241 and a second adapting through hole 20242 .

[0262] In some examples, the fiber optic adapter may include a first fiber optic adapter 4110 and a second fiber optic adapter 4120. One end of the first fiber optic adapter 4110 extends into the second cavity through a first adapting through-hole 20241. The circuit board is located within the first cavity, and the first adapting through-hole 20241 and the second adapting through-hole 20242 cause electromagnetic waves to leak into the second cavity. One end of the second fiber optic adapter 4120 extends into the second cavity through a second adapting through-hole 20242.

[0263] The adapting through hole wraps around the outer wall of the optical fiber adapter and is a circular through hole structure. Compared with the through hole formed by the upper shell and the lower shell covering, the adapting through hole of the present application has no gap on the outside, which reduces the leakage of electromagnetic waves.

[0264] To facilitate the fixed connection between the optical fiber adapter and the lower housing, the optical fiber adapter is provided with an adapting protrusion, which protrudes from the outer surface of the optical fiber adapter. An adapting fixing component is provided on one side of the optical port baffle 2024, and the adapting protrusion is fixed to the adapting fixing portion 2027.

[0265] For example, the first fiber optic adapter 4110 is provided with a first adapting protrusion 411 protruding from an outer surface of the first fiber optic adapter 4110 , and the second fiber optic adapter 4120 is provided with a second adapting protrusion 421 protruding from an outer surface of the second fiber optic adapter 4120 .

[0266] In some embodiments, the outer surface of the first fiber optic adapter 4110 is cylindrical, the first fitting protrusion 411 is cylindrical, and the first fitting protrusion 411 is concentrically disposed with the first fiber optic adapter 4110. The outer surface of the second fiber optic adapter 4120 is cylindrical, the second fitting protrusion 421 is cylindrical, and the second fitting protrusion 421 is concentrically disposed with the second fiber optic adapter 4120.

[0267] The adapting and fixing portion 2027 is located within the first cavity, with its upper surface lower than the upper surface of the optical port baffle 2024. The adapting and fixing portion 2027 has an adapting groove that opens toward the upper housing. For example, the adapting and fixing portion 2027 has a first adapting groove 20271 and a second adapting groove 20272. The first adapting protrusion 411 engages with the first adapting groove 20271, and the second adapting protrusion 421 engages with the second adapting groove 20272.

[0268] A first limiting protrusion 20243 is provided on the upper surface of the optical port baffle 2024 , and the upper surface of the first limiting protrusion 20243 protrudes from the upper surface of the optical port baffle 2024 .

[0269] A first check portion 20273 and a second check portion 20274 are provided on both sides of the first adapting groove 20271. The first adapting groove defines the position of the first adapting protrusion. The first adapting protrusion is located between the first check portion 20273 and the second check portion 20274. A separation portion 20275 is provided between the first adapting groove 20271 and the second adapting groove 20272.

[0270] Figure 30 is a schematic diagram of the structure of a metal clamp according to some embodiments of the present disclosure. Figure 31 is a schematic diagram of the structure of an optical transceiver component according to some embodiments of the present disclosure.

[0271] In some examples, the optical module is also provided with a metal clip 800, which is connected to the lower shell 202, and the upper surface of the metal clip is in contact with the inside of the cover, so that the metal clip is located between the gap between the upper shell and the lower shell, shielding the electromagnetic waves between the cage and the shell, and preventing external electromagnetic waves from entering the interior of the optical module.

[0272] In some examples, the metal clip 800 is in contact with the upper surface of the adapter fixing portion 2027 to block the gap between the adapter fixing portion 2027 and the upper shell.

[0273] As shown in Figures 30 and 31, the metal clamp 800 includes a first clamping plate 810 and a second clamping plate 820, which are bent relative to each other. The first clamping plate 810 has a retaining hole 811, into which the first retaining protrusion 20243 engages, thereby limiting the position of the metal clamp 800 and preventing movement in the length and width directions of the optical module. The second clamping plate 820 has a first clearance portion 821, a second clearance portion 822, and a third clearance portion 823. The first clearance portion 821 is located within the first adapting groove 20271 and is secured to the exterior of the first adapting protrusion. The second clearance portion 822 is located within the second adapting groove 20272 and is secured to the exterior of the second adapting protrusion. The third clearance portion 823 is located between the first and second clearance portions 821 and 822. The isolation portion 20275 is embedded within the third clearance portion 823. The second clamping plate of the metal clamp 800 blocks the gap between the optical fiber adapter and the adapting groove, thereby preventing electromagnetic waves from leaking through the optical port and improving the electromagnetic shielding effect of the optical module.

[0274] For example, the first side wall of the upper shell is connected to the other side of the adapter protrusion. For example, the second card is located between the adapter protrusion and the first side wall of the upper shell, which is beneficial to improving the electromagnetic shielding effect of the optical port position.

[0275] The first clamping plate is positioned above the optical port baffle 2024. The surface of the optical port baffle 2024 is flat, facilitating its installation and securement. The first limiting protrusion 20243 engages the limiting hole 811 to limit the position of the metal clamp 800 and the optical port baffle 2024, preventing movement between the metal clamp 800 and the optical port baffle 2024 in the length and width directions of the optical module. The elastic component 700 is pressed against the upper surface of the metal clamp 800.

[0276] In order to achieve the installation of the metal clip 800, the upper surface of the adapter fixing part 2027 is lower than the upper surface of the light port baffle 2024, the lower surface of the first card plate 810 of the metal clip 800 is connected to the upper surface of the adapter fixing part 2027, and the upper surface of the first card plate 810 is connected to the upper shell.

[0277] For example, the first fiber optic adapter 4110 has a first adapting protrusion 411 protruding from an outer surface of the first fiber optic adapter 4110 , and the second fiber optic adapter 4120 has a second adapting protrusion 421 protruding from an outer surface of the second fiber optic adapter 4120 .

[0278] In some embodiments, the outer surface of the first fiber optic adapter 4110 is cylindrical, the first fitting protrusion 411 is cylindrical, and the first fitting protrusion 411 is concentrically disposed with the first fiber optic adapter 4110. The outer surface of the second fiber optic adapter 4120 is cylindrical, the second fitting protrusion 421 is cylindrical, and the second fitting protrusion 421 is concentrically disposed with the second fiber optic adapter 4120.

[0279] The adapting and fixing portion 2027 is located within the first cavity, with its upper surface lower than the upper surface of the optical port baffle 2024. The adapting and fixing portion 2027 has an adapting groove that opens toward the upper housing. For example, the adapting and fixing portion 2027 has a first adapting groove 20271 and a second adapting groove 20272. The first adapting protrusion 411 engages with the first adapting groove 20271, and the second adapting protrusion 421 engages with the second adapting groove 20272.

[0280] In some embodiments, an adapter slot is provided between the adapter protrusion and the lens component, and the check portion is embedded in the adapter slot. For example, a first adapter slot 413 is provided between the first adapter protrusion and the lens component, and the first check portion is embedded in the first adapter slot to achieve positioning of the optical transceiver component.

[0281] Figure 32 is a schematic diagram of the connection between the optical transceiver component and the lower shell provided in accordance with some embodiments of the present disclosure. Figure 33 is a schematic diagram of the connection between the optical transceiver component, the metal clamp and the lower shell provided in accordance with some embodiments of the present disclosure. Figure 34 is a cross-sectional schematic diagram of the metal clamp, the lower shell and the optical transceiver component provided in accordance with some embodiments of the present disclosure. As shown in Figures 32, 33 and 34, one end of the first optical fiber adapter 4110 extends through the first yield portion to the first adapting groove 20271, passes through the first adapting through hole and then enters the first cavity. At this time, the first adapting protrusion 411 is embedded in the first adapting groove 20271, and the second clamping plate is located in the first adapting groove 20271, and the second clamping plate is located between the first adapting protrusion 411 and the first check portion.

[0282] The upper surface of the optical port baffle 2024 is provided with a first limiting protrusion 20243, and the upper surface of the first limiting protrusion 20243 protrudes from the upper surface of the optical port baffle 2024. The first limiting protrusion 20243 is embedded in the limiting hole 811 to achieve the limiting of the metal clamp 800.

[0283] In the embodiment disclosed herein, an optical port baffle is provided at the optical port position of the lower shell. The optical port baffle has a channel connected to the outside of the optical port only at the adapter through-hole in the length direction, and electromagnetic leakage only exists at the adapter through-hole. The optical fiber adapter blocks the adapter through-hole, and in particular, the diameter of the adapter protrusion is larger than the diameter of the adapter through-hole, completely blocking the adapter through-hole. The second card plate position of the metal clip forms an electromagnetic shielding in the direction of the optical port between the adapter protrusion and the adapter groove, thereby improving the electromagnetic shielding effect of the optical module. The upper shell is located on one side of the second card plate, and the second card plate forms a limit on the upper shell in the length direction.

[0284] Figure 35 is a first schematic structural diagram of an upper shell provided according to some embodiments of the present disclosure. Figure 36 is a second schematic structural diagram of an upper shell provided according to some embodiments of the present disclosure. Figure 37 is a schematic cross-sectional diagram of an upper shell and a lower shell provided according to some embodiments of the present disclosure. As shown in Figures 35, 36 and 37, to achieve the connection between the upper shell and the lower shell, the first lower side plate 2022 is provided with a first elastic slot 20221, which is recessed inwardly relative to the first lower side plate. The second lower side plate 2023 is provided with a second elastic slot 20231, which is recessed inwardly relative to the second lower side plate.

[0285] The first elastic slot 20221 is provided with a first limiting through-hole 20222, and the second elastic slot 20231 is provided with a second limiting through-hole 20232. A limiting groove 20115 is provided on the first side wall of the upper housing. The positioning rod 203 extends through the first limiting through-hole 20222 into the limiting groove 20115 and then into the second limiting through-hole 20232, thereby connecting the upper housing to the lower housing.

[0286] In some embodiments of the present disclosure, the first sidewall of the upper housing faces the optical port, and the opening of the retaining groove 20115 faces the optical port. The lower housing further includes a retaining plate 2028, the upper surface of which protrudes from the upper surface of the optical port baffle 2024. The first sidewall of the upper housing abuts against one side of the metal clamp 800, and the lower surface of the upper housing is connected to the optical transceiver component, thereby ensuring contact and connection between the metal clamp 800 and the optical port baffle 2024.

[0287] In some embodiments of the present application, a first recessed area 20113 is defined on the upper surface of the upper housing, and the first recessed area 20113 is lower than the upper surface of the cover plate 2011. The two sides of the first recessed area 20113 are higher than the bottom of the first recessed area 20113, and the spring element of the elastic component 700 is embedded in the first recessed area 20113. The two sides of the first recessed area 20113 limit the spring element of the elastic component 700, thereby securing the elastic component to the upper housing.

[0288] To position the optical transceiver, the top surface of the first fiber optic adapter 4110 is a first stepped surface, which is a flat surface and connected to the upper housing. The top surface of the second fiber optic adapter 4120 is a second stepped surface, which is a flat surface and connected to the upper housing.

[0289] The lower surface of the cover plate 2011 protrudes downward to form an abutting portion 20114 . The lower surface of the abutting portion 20114 protrudes from the lower surface of the cover plate 2011 , and the lower surface of the abutting portion 20114 is connected to the first step surface 412 and the second step surface.

[0290] The second side wall of the cover plate 2011 is provided with a first shielding recessed area 20111, the opening of the first shielding recessed area 20111 facing the first lower side plate 2022. A first shielding component is provided in the gap formed by the first shielding recessed area 20111 and the first lower side plate 2022. Exemplarily, the first shielding component is a flexible component that fills the gap formed by the first shielding recessed area 20111 and the first lower side plate 2022 to improve the anti-shielding effect of the optical module. A second shielding component is provided in the gap formed by the second shielding recessed area 20112 and the second lower side plate 2023. Exemplarily, the second shielding component is a flexible component that fills the gap formed by the second shielding recessed area 20112 and the second lower side plate 2023 to improve the anti-shielding effect of the optical module.

[0291] A first shielding plate 2016 is provided on the lower surface of the cover plate 2011. The lower surface of the first shielding plate 2016 is connected to the upper surface of the circuit board 300. The lower housing has a first support portion 20211. The first support portion 20211 is located adjacent to the first check portion 20273. The upper surface of the first support portion 20211 is lower than the upper surface of the first check portion 20273. The circuit board is located above the first support portion 20211. The first shielding plate extends across the width of the upper housing.

[0292] The lower housing has a second support portion, located opposite the first support portion 20211 (not shown). The upper surface of the second support portion is lower than the upper surface of the first check portion 20273. The circuit board is located above the second support portion. The first and second support portions support the top portion of the circuit board 300. The top portion of the circuit board 300 is located near the optical port, while the rear portion is located near the electrical port.

[0293] One side of the circuit board 300 abuts against one side of the adapter and fixing portion 2027, which restricts the longitudinal movement of the circuit board. The optical transceiver component is located between the circuit board and the upper housing, restricting its height movement. In this example, screws are not used to secure the circuit board to the housing, reducing space required for the circuit board and improving the miniaturization of the optical module.

[0294] In some examples, the length direction is the connection direction of the optical port and the electrical port, the width direction is perpendicular to the first lower side plate, and the height direction is perpendicular to the bottom plate.

[0295] The bottom plate of the lower housing is provided with a third support portion 20213, and the circuit board 300 is located above the third support portion 20213. A first housing baffle 20214 is provided on one side of the third support portion 20213. The upper surface of the first housing baffle 20214 is higher than the upper surface of the third support portion 20213. The upper surface of the first housing baffle 20214 is lower than the upper surface of the second lower side plate.

[0296] The bottom plate of the lower housing is provided with a fifth support portion, and the circuit board 300 is positioned above the fifth support portion. A second housing baffle is provided on one side of the fifth support portion, and the upper surface of the second housing baffle is higher than the upper surface of the fifth support portion. The upper surface of the second housing baffle is lower than the upper surface of the first lower side plate.

[0297] FIG38 is a schematic diagram of a circuit board and an optical transceiver according to some embodiments of the present disclosure. As shown in FIG38 , the circuit board 300 has a first corner 3110 and a second corner 3120. For example, the first corner 3110 is adjacent to the first lower plate 2022, and the second corner 3120 is adjacent to the second lower plate 2023.

[0298] The ends of the first shielding baffle 2016 extend toward the optical port to form a second shielding baffle 2017 and a third shielding baffle 2018. The second shielding baffle 2017 is adjacent to the first lower side panel, while the third shielding baffle is adjacent to the second lower side panel. The lower surface of the second shielding baffle 2017 is provided with a first circuit baffle 20161 and a second limiting protrusion 20163. The first circuit baffle 20161 is perpendicular to the cover plate and extends toward the second lower side panel. The first circuit baffle 20161 extends into the gap between the first corner 3110 and the first housing baffle 20214. The first corner 3110 and the first housing baffle 20214 limit the length of the first circuit baffle 20161.

[0299] One side of the first circuit baffle 20161 is connected to the first corner 3110 , and the other side of the first circuit baffle 20161 is against the side wall of the first shell baffle 20214 .

[0300] The circuit board 300 also has a third retaining hole 313 and a fourth retaining hole 314. The third retaining hole 313 is adjacent to the first lower side panel, and the fourth retaining hole 314 is adjacent to the second lower side panel. One end of the second retaining protrusion 20163 is embedded in the third retaining hole 313, and the second retaining protrusion 20163 is matingly connected to the third retaining hole 313. In some examples, the third retaining hole 313 is a circular structure, and the second retaining protrusion 20163 is a cylindrical structure or a spherical protrusion that matches the third retaining hole 313.

[0301] The lower surface of the third shielding baffle 2018 is provided with a second circuit baffle 20162 and a third limiting protrusion 20164. The second circuit baffle 20162 is perpendicular to the cover plate and extends toward the first lower side plate. The second circuit baffle 20162 extends into the gap between the second corner and the second housing baffle. The second corner 3120 and the second housing baffle define the second circuit baffle 20162 in its longitudinal direction. One end of the third limiting protrusion 20164 is inserted into the fourth limiting hole 314, where the third limiting protrusion 20164 is matingly connected to the fourth limiting hole 314. In some examples, the fourth limiting hole 314 is circular, and the third limiting protrusion 20164 is a cylindrical structure or a spherical protrusion that matches the fourth limiting hole 314. The fourth limiting hole 314 can also be square, in which case the third limiting protrusion 20164 is shaped to match the fourth limiting hole 314.

[0302] In order to further improve the electromagnetic shielding effect of the optical module, the third limiting hole 313 and the fourth limiting hole 314 are coated with a metal layer, and one end of the second limiting protrusion 20163 is embedded in the third limiting hole 313, so that the circuit board is connected to the upper shell through the metal layer, thereby improving the electromagnetic shielding effect of the optical module.

[0303] A metal layer is provided on the surfaces of the first corner 3110 and the second corner 3120 , and the metal layer is connected to the first circuit baffle 20161 and the second circuit baffle 20162 to improve the electromagnetic shielding effect of the optical module.

[0304] The lower housing also features a second electrical port baffle 2028, which protrudes above the bottom plate. The circuit board is located above this baffle. The second electrical port baffle 2028 corresponds to the first shielding baffle, with the circuit board positioned between them. This seals the electrical port of the optical module, preventing electromagnetic waves from the optical module from escaping through the port. The first shielding baffle's projection covers the second electrical port baffle.

[0305] In this example, on the side adjacent to the optical port, the lower surface of the circuit board is positioned above the first and second support portions of the lower housing. The upper surface of the circuit board 300 is connected to the optical transceiver component, which in turn contacts and connects to the abutment portion 20114 of the cover plate, thereby positioning the circuit board. On the side adjacent to the electrical port, the circuit board is positioned above the third and fourth support portions, and the upper portion of the circuit board is connected to the first, second, and third shielding baffles on the cover plate. The circuit board is retained in position by the third limiting hole and the second limiting protrusion, and by the fourth limiting hole and the third limiting protrusion.

[0306] At the optical port of the optical module, the first sidewall of the upper housing is provided with a retaining groove 20115. A positioning rod 203 extends through the first retaining hole 20222 into the retaining groove 20115 and then into the second retaining hole 20232. The positioning rod 203 connects the upper housing 201 to the lower housing 202. The positioning rod defines the connection between the cover and the lower housing. The lower housing is also provided with a retaining baffle 2028, the upper surface of which protrudes above the upper surface of the optical port baffle 2024. The first sidewall of the upper housing abuts against one side of the metal clamp 800, and the lower surface of the upper housing is connected to the optical transceiver component, ensuring contact and connection between the metal clamp 800 and the optical port baffle 2024.

[0307] The elastic component 700 blocks the first limiting through hole 20222 and the second limiting through hole 20232 to prevent the positioning rod 203 from escaping from the first limiting through hole 20222 or the second limiting through hole 20232 , thereby limiting the positioning rod 203 .

[0308] The circuit board is located on one side of the line connecting the limit baffle 2028 and the first shielding baffle 2016 and is equipped with a variety of optoelectronic devices. The circuit board is located on the other side of the line connecting the limit baffle 2028 and the first shielding baffle 2016 and is not equipped with electrical devices. The optoelectronic devices are located in the enclosed space formed by the upper shell and the lower shell cover. The limit baffle 2028 and the first shielding baffle 2016 seal the space in the direction of the electrical port to prevent leakage of electromagnetic waves.

[0309] To facilitate the connection between the gold finger and the host computer, the gold finger area is located outside the enclosed space formed by the upper and lower shells. To protect the gold finger, a protective plate 2029 is installed at the rear of the lower shell. Protective plate 2029 is located between the first lower side plate 2022 and the second lower side plate 2023, and is located above the circuit board.

[0310] Figure 39 is a schematic partial cross-sectional view of an optical module provided according to some embodiments of the present disclosure. As shown in Figure 39, a protective step surface 2015 is provided at one end of the cover plate 2011. The upper surface of the protective step surface 2015 is lower than the upper surface of the cover plate. The upper surface of the protective step surface 2015 is connected to the lower surface of the protective plate 2029. The protective plate 2029 is in contact with the protective step surface 2015, and the sidewalls of the protective plate 2029 abut against the sidewalls of the cover plate. The protective plate 2029 and the positioning rod 203 define the longitudinal position of the cover plate, thereby connecting the upper and lower shells.

[0311] Protective plate 2029 includes a first baffle 20294 and a second baffle 20292. The first baffle is located above protective step surface 2015 and defines the position of the rear portion of the upper housing within the upper and lower structures. The second baffle 20292 is perpendicular to the first baffle and located outside protective step surface 2015. Protective step surface 2015 abuts against the sidewall of the second baffle, positioning the second baffle against the upper housing in the longitudinal direction.

[0312] The second side wall of the cover plate 2011 is in contact with the first lower side panel of the lower housing, and the third side wall of the cover plate 2011 is in contact with the second lower side panel of the lower housing. To prevent electromagnetic waves from escaping through the gap between the second side wall of the cover plate 2011 and the lower housing, the second side wall of the cover plate 2011 is provided with a first shielding recessed area 20111, which is filled with a first shielding component. The projection of the first shielding recessed area 20111 onto the circuit board extends along the length of the first circuit area. To prevent electromagnetic waves from escaping through the gap between the third side wall of the cover plate 2011 and the lower housing, the third side wall of the cover plate 2011 is provided with a second shielding recessed area 20112, which is filled with a second shielding component. The projection of the second shielding recessed area 20112 onto the circuit board extends along the length of the first circuit area.

[0313] The unlocking component includes: a rotating member, a sliding member, a pull ring and a rotating shaft, and the unlocking component is connected to the lower shell. In this example, the rotating member, the sliding member and the rotating shaft of the unlocking component are located on the bottom plate, and the unlocking component does not contact the upper shell.

[0314] In some embodiments, the upper housing is a plate-like structure and does not include an upper side plate perpendicular to the cover plate. The cover plate 2011 is entirely embedded between the first lower side plate 2022 and the second lower side plate 2023 of the lower housing. The upper surface of the cover plate 2011 is flush with the upper surface of the first lower side plate 2022, and the upper surface of the cover plate 2011 is flush with the upper surface of the first lower side plate.

[0315] In some embodiments of the present disclosure, the upper and lower housings are connected by positioning rods, eliminating the need for screws to pass through them, resulting in a simple structure and easy installation. Furthermore, an optical port baffle divides the housing into a first cavity and a second cavity, with a matching through-hole connecting the first and second cavities. This allows for the positioning and installation of the fiber optic adapter, shielding the optical port and improving the electromagnetic shielding effectiveness of the optical module. The circuit board is fixedly connected to the upper and lower housings using a press-fit method, reducing screw space and facilitating miniaturization of the optical module. In some examples, to drive the light emitting chip, a light emitting chip driver chip can be provided on the circuit board. Currently, the peripheral power supply and control circuits of light emitting chip driver chips are complex, occupying a large PCB layout area. Furthermore, their single function and high cost hinder the space utilization and cost control of the optical module. To this end, in some embodiments of the present disclosure, logic circuitry is provided on the circuit board to enable switching of the light emitting chip from both the hardware and software levels of the host computer. The following details the specific structure of the circuit board in the optical module provided in some embodiments of the present disclosure.

[0316] Figure 40 is a schematic diagram of a partial structure of an optical module provided according to some embodiments of the present disclosure, and Figure 41 is a schematic diagram of a partial signal flow of an optical module provided according to some embodiments of the present disclosure. In conjunction with Figures 40 and 41, to address the above issues, the present disclosure provides an optical module having a gold finger at one end of its circuit board, which is connected to a host computer and is used to receive electrical signals from the host computer. MCU 332 is disposed on the circuit board, connected to the gold finger, receives electrical signals from the host computer, and processes these signals to control the LDO chip.

[0317] The LDO chip is connected to the MCU 332 and receives control signals from the MCU 332. The MCU 332 outputs signals to the LDO chip to control the opening and closing of the LDO chip. The LDO chip is connected to the light emitting chip 401 and outputs bias signals to drive the light emitting chip 401.

[0318] The DSP chip 304 is electrically connected to the gold finger, receives a control signal from the host computer, is connected to the optical transmitter chip 401 , and outputs a modulated signal to the optical transmitter chip 401 .

[0319] One end of the LDO chip is connected to the optical chip and outputs a DC drive signal to the optical transmitter chip. One end of the DSP chip is connected to the laser chip and outputs an AC load signal to the optical transmitter chip.

[0320] The LDO chip 303 receives control signals from the MCU 332 and outputs a bias signal to the optical transmitter chip 401, driving the optical transmitter chip. The DSP chip outputs a modulated signal to the optical transmitter chip 401, performing amplitude modulation on the optical transmitter chip 401. This disclosure eliminates the need for a complex, integrated, and expensive optical transmitter chip driver chip. Instead, the LDO chip directly drives the optical transmitter chip 401. By replacing the integrated optical transmitter chip driver chip with an independently designed LDO chip based on existing optical module hardware, the circuit design is simplified, module costs are reduced, and the reliance on the optical transmitter chip driver chip is eliminated.

[0321] In some embodiments, the circuit board also includes a sampling resistor 305 and an op amp chip 306. The sampling resistor is disposed between the LDO chip and the light emitting chip to collect the magnitude of the bias current flowing from the LDO chip to the light emitting chip. The first input terminal of the op amp chip 306 is connected to the first end of the sampling resistor, the second input terminal of the op amp chip 306 is connected to the second end of the sampling resistor, and the output terminal of the op amp chip 306 is connected to the MCU. The op amp chip 306 collects the analog voltage difference across the sampling resistor and transmits the analog voltage difference to the MCU. The MCU receives the analog voltage difference and converts it into a bias current value. The host computer is connected to the MCU via a gold finger communication interface, and the host computer reads the bias current value within the MCU and completes the reporting of the bias current value.

[0322] In some embodiments, the gold finger is connected to the MCU via an IIC communication bus to achieve communication between the gold finger and the MCU.

[0323] Figure 42 is a schematic diagram of an MCU structure provided according to some embodiments of the present disclosure, and Figure 43 is a schematic diagram of the signal flow of an optical module provided according to some embodiments of the present disclosure. As shown in Figures 42 and 43, the MCU has an enable control pin that is connected to the EN enable pin of the LDO chip. The MCU controls the LDO chip on and off through the enable control pin.

[0324] For example, the enable control pin is a GPIO port. When the signal output by the enable control pin is a high voltage, the LDO chip is turned on; when the signal output by the enable control pin is a low voltage, the LDO chip is turned off.

[0325] The MCU has a digital-analog control pin, which is connected to the FB adjustment pin of the LDO chip. The MCU controls the FB adjustment pin through the output signal of the digital-analog control pin to control the output current of the LDO chip.

[0326] The LDO chip is set on the circuit board. The FB adjustment pin and EN enable pin of the LDO chip are connected to the MCU 332. The output end of the LDO chip is connected to the light emitting chip to directly drive the light emitting chip 401. This reduces the configuration of the commonly used laser driver chip and the related matching circuit of the laser driver chip, which is beneficial to reducing the space occupied by the circuit board and improving the module integration.

[0327] In the embodiment of the present application, the LDO chip is controlled by the MCU and outputs different bias currents to drive the light emitting chip, keeping the light emitting chip turned on and working stably.

[0328] In some embodiments, the sampling resistor is 100 mΩ.

[0329] In some embodiments, the DSP chip outputs an AC load signal, which is loaded to the light emitting chip together with the driving signal output by the LDO chip.

[0330] To further reduce signal disturbances, a first filter network is installed at the output of the LDO chip to prevent reverse transmission of the AC signal. This first filter network is an RL filter network, primarily an AC filter network constructed with resistors and inductors or ferrite beads. Its primary function is to pass the DC bias current in the forward direction, preventing the AC signal from passing in the reverse direction and interfering with the normal operation of the DC signal.

[0331] A sampling resistor 305 and an op amp chip 306 are provided between the LDO chip and the light emitting chip. The sampling resistor is arranged between the LDO chip and the light emitting chip to collect the magnitude of the bias current flowing from the LDO chip to the light emitting chip. The first input terminal of the op amp chip 306 is connected to the first end of the sampling resistor, the second input terminal of the op amp chip 306 is connected to the second end of the sampling resistor, and the output terminal of the op amp chip 306 is connected to the MCU. The op amp chip 306 collects the analog voltage difference across the sampling resistor and transmits this analog voltage difference to the MCU. The MCU receives the analog voltage difference and converts it into a bias current value. The host computer is connected to the MCU via a gold finger communication interface, and the host computer reads the bias current value in the MCU and completes the reporting of the bias current value.

[0332] In some embodiments of this application, an LDO chip is connected to an MCU, and the LDO chip's EN enable pin is used to control the light emitting chip's on and off state. The MCU's digital-to-analog control pin controls the LDO's FB adjustment pin, thereby adjusting the LDO's output voltage and thus achieving laser bias current regulation. A sampling resistor and an op amp chip are used to collect the light emitting chip's bias current, enabling monitoring and reporting of the light emitting chip's bias current.

[0333] In some embodiments of the present application, a DCDC power chip can be provided in place of the LDO chip. The DCDC chip serves as a laser bias circuit, and the MCU has an enable pin connected to the DCDC chip to enable and disable the DCDC chip. The DCDC chip is also connected to a power circuit that provides input voltage to the DCDC chip.

[0334] In some embodiments of the present application, an IDAC chip or an operational amplifier circuit may be used to connect to the control pin of the MCU to output different driving voltages to the laser chip according to the size of the MCU control voltage.

[0335] In some embodiments, the optical module also includes a temperature sensor for detecting the ambient temperature of the light emitting chip and controlling the output voltage to the LDO chip based on the ambient temperature of the light emitting chip. The MCU has a built-in temperature-voltage relationship algorithm that calculates the output voltage based on the received temperature.

[0336] A laser driver chip drives the optical transmitter chip circuit. To enable on / off control of the optical transmitter chip by the host computer, the host computer sends a hardware enable signal directly to the laser driver chip, enabling on / off control of the optical transmitter chip. The hardware enable signal is also sent to the MCU to monitor the host computer's hardware enable signal status. The host computer sends a software enable signal to the optical module's MCU via the IIC bus. After receiving the software enable signal, the MCU sends a command to the laser driver chip to turn the laser on / off via the IIC bus between the MCU and the laser driver chip, thereby enabling the software enable function of the optical module.

[0337] In some embodiments, the optical module includes: an MCU, a logic circuit, an LDO chip and a light emitting chip. The MCU is communicatively connected to the gold finger and receives a software enable control command from the host computer. The enable control pin of the MCU is connected to the first input end of the logic circuit, and the second input end of the logic circuit is connected to the gold finger. The output end of the logic circuit is connected to the EN enable pin of the LDO chip. The hardware enable signal of the host computer serves as the second input signal of the logic circuit, and the software enable signal of the optical module serves as the second input signal of the logic circuit. The output signal of the logic circuit is connected to the enable EN pin of the LDO chip to control the opening and closing of the LDO, thereby realizing complete host computer hardware and software enable control of the switch of the light emitting chip. In the control circuit provided in the present application, when the hardware enable signal sent by the gold finger to the logic circuit is low and the software enable signal sent by the MCU to the logic circuit is low, the logic circuit output is high to control the light emitting chip to emit light.

[0338] In some embodiments, the logic circuit includes an OR gate logic circuit and a NOT gate logic circuit.

[0339] Figure 44 is a second schematic diagram of a structural portion of an optical module provided according to some embodiments of the present disclosure. For optical modules without laser driver chips, in order to enable the host computer to control the on / off light of the optical transmitter chip, as shown in Figure 44, the circuit board is provided with an OR gate logic circuit and a NOT gate logic circuit. The enable control pin of the MCU is connected to the first input end of the OR gate logic circuit, and the second input end of the OR gate logic circuit is connected to the gold finger. The output end of the OR gate logic circuit is connected to the input end of the NOT gate logic circuit. The output end of the NOT gate logic circuit is connected to the EN enable pin of the LDO chip. The hardware enable signal of the host computer serves as the input signal X1 of the OR gate, and the software enable signal of the optical module serves as the input signal X2 of the OR gate. The output signal Y1 of the OR gate serves as the input signal of the NOT gate, and the output signal Y2 of the NOT gate is connected to the enable EN pin of the LDO chip to control the on / off of the LDO, thus realizing complete host computer hardware and software enable control of the switching of the optical transmitter chip.

[0340] Table 1 is a control logic table based on the structure shown in Figure 44. As shown in Table 1, when the hardware enable signal sent by the gold finger to the OR gate logic circuit is low, and the software enable signal sent by the MCU to the OR gate logic circuit is low, the OR gate logic circuit output is low and the NOT gate logic circuit output is high, thereby controlling the light emitting chip to emit light.

[0341] When the hardware enable signal sent by the gold finger to the OR gate logic circuit is low, and the software enable signal sent by the MCU to the OR gate logic circuit is high, the output of the OR gate logic circuit is high and the output of the NOT gate logic circuit is low, so as to control the light emitting chip not to emit light.

[0342] When the hardware enable signal sent by the gold finger to the OR gate logic circuit is high and the software enable signal sent by the MCU to the OR gate logic circuit is low, the output of the OR gate logic circuit is high and the output of the NOT gate logic circuit is low, so as to control the light emitting chip not to emit light.

[0343] When the hardware enable signal sent by the gold finger to the OR gate logic circuit is high, and the software enable signal sent by the MCU to the OR gate logic circuit is high, the output of the OR gate logic circuit is high and the output of the NOT gate logic circuit is low, so as to control the light emitting chip not to emit light.

[0344] The optical module provided by the present invention includes: an MCU, an OR gate logic circuit, a NOT gate logic circuit, an LDO chip and an optical transmitter chip. Among them, the MCU is connected to the gold finger for communication and receives a software enable control command from the host computer. The enable control pin of the MCU is connected to the first input end of the OR gate logic circuit, and the second input end of the OR gate logic circuit is connected to the gold finger. The output end of the OR gate logic circuit is connected to the input end of the NOT gate logic circuit. The output end of the NOT gate logic circuit is connected to the EN enable pin of the LDO chip. The hardware enable signal of the host computer serves as the input signal of the OR gate, and the software enable signal of the optical module serves as the input signal of the OR gate. The output signal of the OR gate serves as the input signal of the NOT gate, and the output signal of the NOT gate is connected to the enable EN pin of the LDO chip to control the opening and closing of the LDO, thereby realizing complete host computer hardware and software enable control of the switch of the optical transmitter chip. In the control circuit provided in the present application, when the hardware enable signal sent by the gold finger to the OR gate logic circuit is low, and the software enable signal sent by the MCU to the OR gate logic circuit is low, the output of the OR gate logic circuit is low and the output of the NOT gate logic circuit is high, so as to control the light emitting chip to emit light.

[0345] Figure 45 is a third schematic diagram of the structure of an optical module provided according to some embodiments of the present disclosure. As shown in Figure 45, the optical module is provided with an MCU, a DSP chip, an LDO chip, and a light emitting chip. The MCU has an enable control pin, which is connected to the first input of the OR gate logic circuit, and the second input of the OR gate logic circuit is connected to the gold finger. The output of the OR gate logic circuit is connected to the input of the NOT gate logic circuit. The output of the NOT gate logic circuit is connected to the EN enable pin of the LDO chip, which is used to control the opening and closing of the LDO, thereby realizing complete upper computer hardware and software enable control of the light emitting chip. In the control circuit provided in this application, when the hardware enable signal sent by the gold finger to the OR gate logic circuit is low and the software enable signal sent by the MCU to the OR gate logic circuit is low, the output of the OR gate logic circuit is low, the output of the NOT gate logic circuit is high, and the bias signal is output to control the light emitting chip to emit light.

[0346] The MCU has a digital-to-analog control pin, which is connected to the FB adjustment pin of the LDO chip. The MCU controls the FB adjustment pin through the digital-to-analog control pin output signal to control the output current of the LDO chip. The DSP chip is electrically connected to the gold finger and receives control signals from the host computer. The DSP chip is connected to the light emitting chip and outputs a modulation signal to the light emitting chip to modulate the light emitted by the light emitting chip. The present disclosure does not include a complex, integrated, and expensive light emitting chip driver chip. The light emitting chip 401 is directly driven by the LDO chip. Based on the existing optical module hardware, by replacing the integrated light emitting chip driver chip with an independently designed LDO chip, the circuit design is simplified, the module cost is reduced, and the dependence on the light emitting chip driver chip is eliminated. At the same time, a simple OR gate logic circuit and a NOT gate logic circuit are combined with the MCU to realize complete host computer hardware and software to enable control of the light emitting chip on and off.

[0347] In some embodiments, a sampling resistor and an op amp chip are provided between the LDO chip and the light emitting chip. The sampling resistor is provided between the LDO chip and the light emitting chip to collect the magnitude of the bias current flowing from the LDO chip to the light emitting chip. The first input terminal of the op amp chip is connected to the first end of the sampling resistor, the second input terminal of the op amp chip is connected to the second end of the sampling resistor, and the output terminal of the op amp chip is connected to the MCU. The op amp chip collects the voltage analog difference across the sampling resistor and transmits the voltage analog difference to the MCU. The MCU receives the voltage analog difference and converts the voltage analog difference into a bias current value. The host computer is connected to the MCU via a gold finger communication interface, and the host computer reads the bias current value in the MCU to complete the reporting of the bias current value.

[0348] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. An optical module, comprising: A circuit board, wherein an optical chip is provided on the circuit board: A lens assembly is covered on the optical chip; a first lens is arranged on the inner surface of the lens assembly facing the optical chip, and a reflective surface is arranged on the outer surface of the lens assembly facing away from the circuit board; a wrapping cavity is arranged at one end of the lens assembly, and a second lens is arranged in the wrapping cavity; An optical fiber bracket, wrapping the optical fiber; the connection between the optical fiber bracket and the lens assembly; There is a gap between the optical fiber end face of the optical fiber and the second lens, and the first end face of the optical fiber bracket and the optical fiber end face are both inclined surfaces; A positioning column is arranged in the wrapping cavity, and the second lens is located on one side of the positioning column; The first end surface is provided with a positioning hole, and the positioning column is inserted into the positioning hole to achieve the connection between the optical fiber bracket and the lens assembly; The wrapping cavity includes a stop protrusion, and the stop protrusion is located on the other side of the positioning column; the side of the stop protrusion facing the optical fiber bracket is a stop surface, the first end surface includes a step surface and a polished surface, the step surface and the polished surface have different angles, the stop surface includes a first stop portion and a second stop portion, the first stop portion is located in the upper area of ​​the positioning column, and the second stop portion is located in the lower area of ​​the positioning column, and the distance between the first stop portion and the opening of the wrapping cavity is greater than the distance between the second stop portion and the opening of the wrapping cavity, so that the second stop portion contacts the polished surface, and the first stop portion does not contact the step surface; The optical signal emitted by the optical chip is incident on the optical fiber end face after passing through the first lens, the reflection surface and the second lens.

2. The optical module according to claim 1, wherein: The angle difference between the stop surface and the first end surface is -2° to 2°.

3. The optical module according to claim 2, wherein: The first end face, the stop face and the optical fiber end face have the same angle, and the first end face, the stop face and the optical fiber end face have an angle of 3 to 8° or 9 to 13°.

4. The optical module according to claim 1, wherein: The stop protrusion has an avoidance opening, and the avoidance opening is arranged corresponding to the positioning column to avoid the positioning column.

5. The optical module according to claim 1, wherein: The positioning post comprises a first positioning post and a second positioning post, the second lens is located between the first positioning post and the second positioning post, and the stop protrusion is located outside the first positioning post and the second positioning post.

6. The optical module according to claim 1, wherein: The stop protrusion includes a first stop protrusion and a second stop protrusion, the first stop protrusion is located outside the first positioning post of the positioning post, and the second stop protrusion is located outside the second positioning post of the positioning post.

7. The optical module according to claim 1, wherein: The optical fiber end face does not protrude from the first end face of the optical fiber holder, so that the first end face and the optical fiber end face have the same angle.

8. The optical module according to claim 1, wherein: The optical fiber comprises a first optical fiber and a second optical fiber, the first optical fiber is arranged corresponding to the emission coupling lens of the second lens, so that the optical signal is coupled through the emission coupling lens to be incident on the first optical fiber; The second optical fiber is arranged corresponding to the receiving collimating lens of the second lens, so that the optical signal of the second optical fiber is collimated by the receiving collimating lens.

9. The optical module according to claim 1, wherein: A notch is provided on the side of the optical fiber bracket, and the notch faces the lens assembly; The wrapping cavity further includes a limiting plate and a placement protrusion, the limiting plate is arranged corresponding to the notch, the limiting plate and the placement protrusion are respectively located on both sides of the stop protrusion, the limiting plate is protruding relative to the stop protrusion, the placement protrusion is recessed relative to the stop protrusion, and the placement protrusion is provided with the positioning column; The object placement protrusion includes a first object placement protrusion and a second object placement protrusion, the first object placement protrusion and the second object placement protrusion are respectively located on both sides of the wrapping cavity, a first object placement surface and a second object placement surface are arranged between the first object placement protrusion and the second object placement protrusion, the first object placement surface and the second object placement surface are recessed relative to the object placement protrusion, the second lens is arranged on the first object placement surface and the second object placement surface, and a step surface is arranged between the first object placement surface and the second object placement surface.

10. The optical module according to claim 1, wherein: A through hole is provided between the second lens and the stop protrusion, the first stop portion is located above the through hole, and the second stop portion is located below the through hole.

11. The optical module according to claim 10, wherein: The optical fiber bracket includes a core, and the core is configured to wrap the optical fiber; the core is provided with a clamping surface, and a clamping step is provided in the wrapping cavity, and the clamping step is arranged corresponding to the clamping surface.

12. The optical module according to claim 11, wherein: The engaging step is located between the stop surface and a side surface of the insert away from the stop surface.

13. The optical module according to claim 11, wherein: The width dimension of the engaging surface is greater than the width dimension of the engaging step, and the height dimension of the engaging step is less than the thickness dimension of the engaging surface at a position corresponding to the insert notch.

14. The optical module according to claim 11, wherein: A glue dispensing groove is provided on the lens assembly, and the glue dispensing groove is connected with the core. The glue dispensing groove is configured to inject glue into the side of the core to bond the side of the core to the inner wall of the wrapping cavity; the glue dispensing groove only includes a first glue dispensing groove or a second glue dispensing groove, the opening of the first glue dispensing groove faces upward, and the opening of the second glue dispensing groove faces downward.

15. The optical module according to claim 14, wherein: The engaging surface is located at the high point of the end surface of the insert, the glue dispensing groove only includes the second glue dispensing groove, and the opening of the second glue dispensing groove faces downward; or, The engaging surface is located at the low point of the end surface of the insert, and the glue dispensing groove only includes a first glue dispensing groove, and the opening of the first glue dispensing groove faces upward.

16. The optical module according to claim 10, wherein: The reflector includes a first reflector, a second reflector and a third reflector, the first reflector is used to reflect the collimated light emitted by the first lens to the second reflector, the second reflector is used to reflect the reflected collimated light to the third reflector, and the third reflector is used to reflect the collimated light after re-reflection to the second lens.

17. The optical module according to claim 1, further comprising: Upper shell; A lower shell body, which is connected to the upper shell body to form a shell body; The circuit board is located between the upper housing and the lower housing; An optical fiber adapter is located at one side of the lens assembly, and the optical fiber adapter is provided with an adapting protrusion; Wherein, the lower shell comprises: Base plate; A first lower side plate, located at one side of the bottom plate; A second lower side plate connected to the bottom plate, wherein the second lower side plate and the first lower side plate are arranged on two sides of the bottom plate opposite to each other; an optical port baffle, located between the first lower side plate and the second lower side plate, the optical port baffle dividing the lower shell into a first cavity and a second cavity; the circuit board is located in the second cavity; The optical port baffle is provided with an adapting through hole, and the adapting through hole connects the first cavity and the second cavity; one end of the optical fiber adapter extends to the first cavity through the adapting through hole; one side of the adapting protrusion abuts against one side of the optical port baffle, and the adapting through hole wraps the outer wall of the optical fiber adapter. The first side wall of the upper shell is provided with a limiting groove, and the positioning rod passes through the first lower side plate, the limiting groove and the second lower side plate; The upper shell covers the upper part of the first cavity.

18. The optical module according to claim 17, wherein: The first lower side plate is provided with a first limiting through hole, the second lower side plate is provided with a second limiting through hole, and the positioning rod passes through the first limiting through hole, the limiting groove and the first limiting through hole in sequence.

19. The optical module according to claim 17, further comprising: An elastic component, sleeved on the outer side of the shell; A first recessed area is provided on the upper surface of the upper shell, and the spring sheet of the elastic component is embedded in the first recessed area; The elastic component covers the positioning rod.

20. The optical module according to claim 19, further comprising a metal clamp, comprising: The first card plate and the second card plate are bent relative to each other: The first card plate is located above the optical port baffle, the second card plate is located at one side of the optical port baffle, and the second card plate is located between the adapter protrusion and the first side wall of the upper shell; the elastic component is connected to the first card plate.

21. The optical module according to claim 17, wherein: The second side wall of the upper shell is provided with a first shielding recessed area, a first shielding component is provided between the first shielding recessed area and the first lower side plate, and the first shielding component is interference-connected with the first shielding recessed area; A second shielding recessed area is provided between the third side wall of the upper shell and the second lower side plate, a second shielding component is provided in the second shielding recessed area, and the second shielding component is interference connected with the second shielding recessed area.

22. The optical module according to claim 21, wherein: The circuit board is provided with a third limiting hole, a fourth limiting hole, a first corner and a second corner; The upper housing comprises: A first shielding baffle is located on the lower surface of the upper shell, and the first shielding baffle runs through the width direction of the upper shell; A second shielding baffle, connected to the first shielding baffle, the second shielding baffle being adjacent to the first lower side plate; A third shielding baffle, connected to the first shielding baffle, the third shielding baffle being adjacent to the second lower side plate; A first circuit baffle and a second limiting protrusion are provided at the bottom of the second shielding baffle; one side of the first circuit baffle abuts against the first corner, and one end of the second limiting protrusion is embedded in the third limiting hole; A second circuit baffle and a third limiting protrusion are provided at the bottom of the third shielding baffle; one side of the second circuit baffle abuts against the second corner, and one end of the third limiting protrusion is embedded in the fourth limiting hole.

23. The optical module according to claim 22, wherein: The bottom plate is provided with a second electrical port baffle, The lower surface of the circuit board is connected to the second electrical port baffle, and the upper surface of the circuit board is connected to the first shielding baffle; The projection of the first shielding baffle covers the second electrical port baffle.

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