Optical module

Abstract

The utility model provides an optical module which comprises a lens assembly and an optical fiber support, a wrapping cavity is formed in one end, facing the optical fiber support, of the lens assembly, a second lens and a positioning column are arranged in the wrapping cavity, the positioning column is located on one side of the second lens, the optical fiber support wraps an optical fiber and is provided with a positioning hole, and the positioning column is inserted into the positioning hole. 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 faces. The wrapping cavity comprises a stopping protrusion, the stopping protrusion is located on the other side of the positioning column, 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 optical fiber support and the lens assembly, the optical fiber support and the lens assembly are connected in the width and height directions of the lens assembly through the positioning columns and the positioning holes, and the optical fiber support and the lens assembly are connected in the length direction of the lens assembly through the stop face and the inclined face of the first end face of the optical fiber support.

Description

Technical Field

[0001] The present application relates to the field of optical fiber communication technology, and in particular to an optical module. Background Art

[0002] With the development of new services and application models such as cloud computing, mobile Internet, and video, the advancement of optical communication technology has become increasingly important. In optical communication technology, optical modules are tools for realizing the mutual conversion of optical and electrical signals, and are one of the key components in optical communication equipment. In addition, as optical communication technology develops, the transmission rate of optical modules is required to continue to increase. Utility Model Content

[0003] The present application provides an optical module to connect a lens assembly to an optical fiber bracket.

[0004] An optical module, comprising:

[0005] A circuit board having an optical chip disposed thereon;

[0006] 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, a second lens and a positioning column are arranged in the wrapping cavity, and the second lens is located on one side of the positioning column;

[0007] An optical fiber bracket wraps the optical fiber; a first end surface of the optical fiber bracket 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;

[0008] There is a gap between the fiber end face of the optical fiber and the second lens, and the first end face of the optical fiber bracket and the fiber end face of the optical fiber are both inclined surfaces;

[0009] The wrapping cavity includes a stop protrusion, 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 stop surface is an inclined surface, and the stop surface is in contact with the first end surface of the optical fiber bracket;

[0010] 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.

[0011] An optical module, comprising:

[0012] A circuit board having an optical chip disposed thereon;

[0013] 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, a second lens and a positioning column are arranged on the inner surface of the wrapping cavity, and the second lens is located on one side of the positioning column;

[0014] An optical fiber bracket wraps the optical fiber; a first end surface of the optical fiber bracket 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;

[0015] There is a gap between the fiber end face of the optical fiber and the second lens, the first end face of the optical fiber holder comprises a polished surface, and the polished surface and the fiber end face of the optical fiber are inclined surfaces at the same angle;

[0016] The wrapping cavity includes a stop protrusion, 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 stop surface is an inclined surface, and the stop surface has the same angle as the grinding surface, so that the contact area between the stop surface and the grinding surface is increased when the stop surface is in contact with the grinding surface;

[0017] 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.

[0018] Beneficial effects: The present application provides an optical module, including a circuit board, a lens assembly and an optical fiber holder, wherein an optical chip is arranged on the circuit board, and the lens assembly cover is arranged on the optical chip. A first lens is arranged on the inner surface of the lens assembly facing the optical chip, 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, a second lens and a positioning column are arranged in the wrapping cavity, and the second lens is located on one side of the positioning column. The optical fiber holder wraps the optical fiber, and a positioning hole is arranged on the first end face of the optical fiber holder, and the positioning column is inserted into the positioning hole to realize the connection between the optical fiber holder and the lens assembly along the width direction and the height direction of the lens assembly. There is a gap between the optical fiber end face of the optical fiber and the second lens, and reflection occurs when the optical signal enters the optical fiber end face of the optical fiber through the second lens. In order to solve this problem, the optical fiber end face of the optical fiber needs to be processed into an inclined surface. Because the optical fiber end face of the optical fiber is an inclined surface relative to the optical fiber side face of the optical fiber, the reflected light will be reflected to other places according to the angle of the optical fiber end face, and will not return along the original path, so it will not interfere 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 an inclined surface, 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 inclined surfaces. 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 holder is a stop surface, and the stop surface is in contact with the first end surface 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 the present application, the optical fiber holder and the lens assembly are connected along the width and height directions of the lens assembly through the positioning column 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 inclined surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 is a partial structural diagram of an optical communication system provided according to some embodiments;

[0021] Figure 2 A partial structural diagram of a host computer provided according to some embodiments;

[0022] Figure 3 A structural diagram of an optical module provided according to some embodiments;

[0023] Figure 4is an exploded view of an optical module provided according to some embodiments;

[0024] Figure 5 An exploded view of an optical transceiver component and a circuit board according to some embodiments;

[0025] Figure 6 A cross-sectional view of an optical transceiver component and an optical chip according to some embodiments;

[0026] Figure 7 An exploded view of an optical transceiver component provided according to some embodiments;

[0027] Figure 8 A structural diagram of an optical fiber array provided in accordance with some embodiments at a certain viewing angle;

[0028] Fig. 9 is a structural diagram of an optical fiber array provided in accordance with some embodiments at another viewing angle;

[0029] Fig.10 A structural diagram of a lens assembly provided according to some embodiments at a certain viewing angle;

[0030] Fig.11 is a structural diagram of a lens assembly provided according to some embodiments at another viewing angle;

[0031] Fig.12 A cross-sectional view of a lens assembly provided according to some embodiments at a certain viewing angle;

[0032] Fig.13 A cross-sectional view of an optical transceiver component provided in accordance with some embodiments at a certain viewing angle;

[0033] Fig.14 is a cross-sectional view of a lens assembly provided according to some embodiments at another viewing angle;

[0034] Fig.15 It is a cross-sectional view of an optical transceiver component provided according to some embodiments at another viewing angle. DETAILED DESCRIPTION

[0035] Some embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0036] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be interpreted as having an open, inclusive meaning, 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" implies open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps; descriptions such as "parallel", "perpendicular", "same", "consistent", and "flush" are not limited to absolute mathematical theoretical relationships, but also include an acceptable error range generated in practice, and also include differences based on the same design concept but due to manufacturing reasons.

[0037] In optical communication technology, in order to establish information transmission between information processing devices, it is necessary to load information onto light and use the propagation of light to achieve information transmission. Here, the light loaded with information is an optical signal. When optical signals are transmitted in information transmission equipment, the loss of optical power can be reduced, so high-speed, long-distance, and low-cost information transmission can be achieved. The signals that information processing equipment can recognize and process are electrical signals. Information processing equipment usually includes optical network terminals (Optical Network Unit, ONU), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., and information transmission equipment usually includes optical fibers and optical waveguides.

[0038] The optical module can realize the mutual conversion between optical signals and electrical signals between information processing equipment and information transmission equipment. For example, at least one of the optical signal input end or the optical signal output end of the optical module is connected to an optical fiber, and at least one of the electrical signal input end or the electrical signal output end of the optical module is connected to an optical network terminal; the first optical signal from the optical fiber is transmitted to the optical module, and the optical module converts the first optical signal into a first electrical signal, and transmits the first electrical signal to the optical network terminal; the second electrical signal from the optical network terminal is transmitted to the optical module, and the optical module converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber. Since multiple information processing devices can transmit information through electrical signals, at least one of the multiple information processing devices needs to be directly connected to the optical module, and all information processing devices do not need to be directly connected to the optical module. Here, the information processing device directly connected to the optical module is called the upper computer of the optical module. In addition, the optical signal input end or the optical signal output end of the optical module can be called an optical port, and the electrical signal input end or the electrical signal output end of the optical module can be called an electrical port.

[0039] Figure 1 FIG. 1 is a partial structural diagram of an optical communication system provided according to some embodiments. Figure 1 As shown, the optical communication system mainly includes a remote information processing device 1000 , a local information processing device 2000 , a host computer 100 , an optical module 200 , an optical fiber 101 and a network cable 103 .

[0040] One end of the optical fiber 101 extends toward the remote information processing device 1000, and the other end of the optical fiber 101 is connected to the optical module 200 through the optical port of the optical module 200. The optical signal can be totally reflected in the optical fiber 101, and the propagation of the optical signal in the total reflection direction can almost maintain the original optical power. The optical signal undergoes multiple total reflections in the optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to the optical module 200, or to transmit the optical signal from the optical module 200 to the remote information processing device 1000, thereby realizing long-distance, low-power loss information transmission.

[0041] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 are 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 working state of the optical module 200.

[0042] 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 so that the host computer 100 and the optical module 200 establish a unidirectional or bidirectional electrical signal connection.

[0043] The host computer 100 also includes an external electrical interface, which can be connected to an electrical signal network. For example, the external electrical interface includes a Universal Serial Bus (USB) interface or a network cable interface 104, and the network cable interface 104 is configured to access the 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 as to establish an electrical signal connection between the local information processing device 2000 and the host computer 100 through the network cable 103. For example, the third electrical signal sent by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103, and the host computer 100 generates a second electrical signal according to the third electrical signal. The second electrical signal from the host computer 100 is transmitted to the optical module 200, and 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, and the second optical signal is transmitted to the remote information processing device 1000 in the optical fiber 101. For example, the first optical signal from the remote information processing device 1000 is transmitted through the optical fiber 101, and the first optical signal from the optical fiber 101 is transmitted to the optical module 200, and the optical module 200 converts the first optical signal into a first electrical signal, and the optical module 200 transmits the first electrical signal to the host computer 100, and the host computer 100 generates a fourth electrical signal according to the first electrical signal, and transmits the fourth electrical signal to the local information processing device 2000. It should be noted that the optical module is a tool for realizing the mutual conversion between optical signals and electrical signals. During the conversion process between the optical signals and electrical signals, the information does not change, but the encoding and decoding methods of the information can change.

[0044] 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.

[0045] Figure 2 FIG. 1 is a partial structural diagram of a host computer according to some embodiments. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 Only the structure of the host computer 100 related to the optical module 200 is shown. Figure 2 As shown, the host computer 100 further 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 access the electrical port of the optical module 200; the heat sink 107 has a protruding structure such as fins to increase the heat dissipation area.

[0046] The optical module 200 is inserted into the cage 106 of the host computer 100, and the cage 106 fixes the optical module 200. The heat generated by the optical module 200 is transferred to the cage 106 and then diffused through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, so that the optical module 200 establishes a bidirectional electrical signal connection with the host computer 100. In addition, the optical port of the optical module 200 is connected to the optical fiber 101, so that the optical module 200 establishes a bidirectional optical signal connection with the optical fiber 101.

[0047] Figure 3 is a structural diagram of an optical module provided according to some embodiments, Figure 4 FIG. 1 is an exploded view of an optical module provided according to some embodiments. Figure 3 and Figure 4 As shown, the optical module 200 includes a shell, a circuit board 300 disposed in the shell, and an optical transceiver component 900 .

[0048] The housing comprises 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 body.

[0049] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and arranged perpendicular to the bottom 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.

[0050] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and vertically arranged with the bottom 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 vertically arranged with the cover plate 2011, and the two upper side plates are combined with the two lower side plates 2022 to realize that the upper shell 201 covers the lower shell 202.

[0051] The direction of the line connecting the two openings 204 and 205 may be consistent with the length direction of the optical module 200, or may be inconsistent with the length direction of the optical module 200. For example, the opening 204 is located at the end of the optical module 200 ( Figure 3 The opening 205 is also located at the end of the optical module 200 ( Figure 3Alternatively, the opening 204 is located at the end of the optical module 200, and the opening 205 is located at the side of the optical module 200. The opening 204 is an electrical port, and the gold finger of the circuit board 300 extends from the electrical port and is inserted into the electrical connector of the host computer 100; the opening 205 is an optical port, which is configured to access the external optical fiber 101 so that the optical fiber 101 is connected to the optical transceiver component 900 in the optical module 200.

[0052] The upper housing 201 and the lower housing 202 are combined to facilitate the installation of the circuit board 300, the optical transceiver component 900, etc. into the housing, and the upper housing 201 and the lower housing 202 can encapsulate and protect the above components. In addition, when assembling the circuit board 300, the optical transceiver component 900, etc., it is convenient to deploy the positioning components, heat dissipation components, and electromagnetic shielding components of these components, which is conducive to automated production.

[0053] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials to facilitate electromagnetic shielding and heat dissipation.

[0054] 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.

[0055] For example, the unlocking component 600 is located on the outside of the two lower side plates 2022 of the lower housing 202, and includes a snap-fit ​​component that matches 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 fixes 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 relationship between the snap-fit ​​component and the host computer, so as to release the fixation of the optical module 200 and the host computer, so that the optical module 200 can be pulled out of the cage 106.

[0056] The circuit board 300 includes circuit traces, electronic components and chips, etc. The electronic components and chips are connected according to the circuit design through the circuit traces to realize the functions of power supply, electrical signal transmission and grounding. The electronic components may include capacitors, resistors, transistors, metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), etc. The chips may include microcontroller units (Microcontroller Unit, MCU), laser driver chips, transimpedance amplifiers (Transimpedance Amplifier, TIA), limiting amplifiers (Limiting Amplifier, LIA), clock and data recovery chips (Clock and Data Recovery, CDR), power management chips, and digital signal processing (Digital Signal Processing, DSP) chips.

[0057] 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.

[0058] The circuit board 300 also includes a gold finger formed on the end surface thereof, 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 provided on the surface of only one side of the circuit board 300 (for example, Figure 4 The upper surface shown in the figure) can also be set on the upper and lower surfaces of the circuit board 300 to provide a larger number of pins, so as to adapt to occasions where the number of pins is large. 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.

[0059] Figure 5 The figure is an exploded view of an optical transceiver component and a circuit board according to some embodiments. Figure 6 FIG. 1 is a cross-sectional view of an optical transceiver component and an optical chip according to some embodiments. Figure 5 and Figure 6 As shown, in some embodiments, an optical chip 301 may be disposed on the circuit board 300. The optical chip 301 may be attached to the circuit board 300.

[0060] 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.

[0061] The optical chip 301 may include an optical receiving chip 312. The optical receiving chip 312 may receive an optical signal. The optical receiving chip 312 and the optical transmitting chip 311 may be fixed side by side on the circuit board 300. The light incident surface of the optical receiving chip 312 may be located on the top surface of the optical receiving chip 312, so that the light beam received by the optical receiving chip 312 is perpendicular to the circuit board 300.

[0062] 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 .

[0063] 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 convenient for being received by the optical receiving chip.

[0064] like Figure 5 and Figure 6 As shown, an optical matching chip 302 may be disposed on the circuit board 300 .

[0065] The optical matching chip 302 may include a laser driving chip 321. The laser driving chip 321 may be bonded to the circuit board 300 by silver glue to play a role of fixing and heat dissipation, and then the bare chip and the circuit board 300 are connected by gold wire bonding.

[0066] 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 play a role of fixing and heat dissipation, and then the bare chip and the circuit board 300 are connected by gold wire bonding to achieve circuit connection.

[0067] like Figure 6 As shown, in some embodiments, a first lens 912 is disposed on one 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 emitting chip 311 and couple the light beam to be incident on the optical receiving chip 312.

[0068] In some embodiments, a reflective surface 9131 may be provided on one 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, the light beam 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 transmitted horizontally to the right. The light beam transmitted horizontally to the left is changed to a light beam transmitted vertically downward (i.e., the light beam incident to the first lens 912) after being reflected by the reflective surface 9131.

[0069] In some embodiments, a second lens 915 may be provided on one side of the optical transceiver component 900 facing the optical port. The second lens 915 may be located between the reflective surface 9131 and the optical fiber to collimate the light beam reflected by the reflective surface 9131 and then incident on the optical fiber and the reflected light beam transmitted by the optical fiber.

[0070] 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 emitted to the reflecting surface 9131 for reflection, and the reflected light beam is coupled via the emission coupling lens of the second lens 915 to be incident on the optical fiber.

[0071] The optical fiber light beam is collimated by the receiving collimating lens of the second lens 915 , and 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 .

[0072] Figure 7 FIG. 1 is an exploded view of an optical transceiver component provided according to some embodiments. Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the optical transceiver component 900 may include a lens assembly 901. The lens assembly 901 may be covered on the circuit board 300.

[0073] The bottom of the lens assembly 901 may be provided with a cover groove 911. The cover groove 911 may be formed by a side of the lens assembly 901 facing the circuit board 300 being recessed in a direction away from the circuit board 300. The cover groove 911 may form a cover cavity with the circuit board 300. The optical chip 301 and the optical matching chip 302 may be arranged in the cover cavity.

[0074] The top of the lens assembly 901 may be provided with an optical opening slot 913. The optical opening slot 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 side wall of the optical opening slot 913 may be provided as a reflective surface 9131.

[0075] A wrapping cavity 914 may be provided at one end of the lens assembly 901. The wrapping cavity 914 may have an opening. A second lens 915 may be provided in the wrapping cavity 914.

[0076] like Figure 6 and Figure 7 As shown, 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 encapsulation cavity 914 through an opening of the encapsulation cavity 914, so that the optical fiber array 902 is optically connected to the lens assembly 901.

[0077] Figure 8 A structural diagram of an optical fiber array provided according to some embodiments at a certain viewing angle. Fig. 9 FIG. 4 is a structural diagram of an optical fiber array provided according to some embodiments at another viewing angle. Figure 8 and Fig. 9 As shown, 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 focus of the second lens 915, so that the optical fiber 922 is optically connected to the second lens 915, and then the light beam is incident on the optical fiber 922 after being coupled by the second lens 915, and the second lens 915 collimates the light beam transmitted by the optical fiber 922.

[0078] In some embodiments, one end of the optical fiber array 902 may include a terminal end surface of the optical fiber holder 921 .

[0079] 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 .

[0080] Since there is a gap between the second lens 915 and the fiber end face of the optical fiber 922, when the optical signal is incident on the fiber end face of the optical fiber from the second lens 915, 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.

[0081] To solve this problem, in some embodiments, the fiber end face of the optical fiber 922 can be set as a bevel. The fiber end face of the optical fiber 922 is a bevel, and when the optical signal reflected by the lens assembly 901 is emitted to the fiber end face of the optical fiber 922, the reflected light will be reflected to other places according to the angle of the bevel, instead of entering the lens assembly 901 along the original path, thereby reducing the interference of the reflected light.

[0082] In some embodiments, the angle between the fiber end face of the optical fiber 922 and the side of the optical fiber 922 is 3 to 13°. For example, the angle between the fiber end face of the optical fiber 922 and the side of the optical fiber 922 is 3 to 8°, the angle between the fiber end face of the optical fiber 922 and the side of the optical fiber 922 is 9 to 13°, and the angle between the fiber end face and the opposite fiber side is 8°.

[0083] like Figure 8 and Fig. 9 As shown, in some embodiments, the optical fiber array 902 may include an optical fiber holder 921. The optical fiber holder 921 may wrap the 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 wrapping cavity 914 to achieve the connection between the optical fiber array 902 and the lens assembly 901.

[0084] The optical fiber bracket 921 may be provided with a through positioning hole 9215. The positioning hole 9215 may be arranged 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.

[0085] The positioning holes 9215 may include a first positioning hole 9215a.

[0086] The positioning hole 9215 may include a second positioning hole 9215b.

[0087] 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 opposite face of the end face of the optical fiber holder 921) is provided with an optical fiber jack. The optical fiber jack may be connected to the optical fiber hole so that the optical fiber 922 is 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 incident surface of the optical fiber 922 may be located inside the optical fiber holder 921, or may protrude from the end face of the optical fiber holder 921.

[0088] In some embodiments, the optical fiber 922 may include a first optical fiber, and the first optical fiber 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 .

[0089] 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 fiber and the emission coupling lenses are arranged in a one-to-one correspondence.

[0090] In some embodiments, the optical fiber 922 may include a second optical fiber, and the second optical fiber 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 optical receiving chip.

[0091] 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.

[0092] 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.

[0093] 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 checked through the observation hole 9212. After the optical fiber 922 is inserted into the optical fiber holder 921 through the optical fiber insertion hole, sealing glue may 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.

[0094] like Figure 8 and Fig. 9 As shown, the optical fiber bracket 921 may include a first end surface 9211. The first end surface 9211 is the end end surface of the optical fiber bracket 921.

[0095] In some embodiments, the fiber end face of the optical fiber 922 protrudes from the end face (i.e., the first end face 9211) of the optical fiber holder 921. Through the cutting process, the fiber end face of the optical fiber 922 is directly cut so that the fiber end face of the optical fiber 922 is a bevel. For the optical fiber array 902 in this case, the end face of the optical fiber holder 921 does not need to be set as a bevel.

[0096] In some embodiments, the fiber end face of the optical fiber 922 does not protrude beyond the end face (ie, the first end face 9211 ) of the optical fiber holder 921 .

[0097] In some embodiments, the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 are each ground through a grinding process so that the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 are both inclined surfaces, but 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 are different, that is, the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 are not parallel.

[0098] In some embodiments, the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 are ground together through a grinding process so that the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 are both inclined surfaces, but 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 are 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 are parallel.

[0099] 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 the mutual cooperation between the optical fiber 922 of the optical fiber array 902 and the second lens 915 of the lens assembly 901.

[0100] In the process of grinding the fiber end face of the optical fiber 922 and the first end face 9211 of the optical fiber holder 921 , it is sufficient to grind 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 .

[0101] For a thinner optical fiber bracket, the first end surface 9211 of the optical fiber bracket 921 can be completely ground without leaving a step surface, that is, the first end surface 9211 of the optical fiber bracket 921 only includes a ground surface, and the ground surface is an inclined surface. Figure 8 and Fig. 9 As shown, the first end surface 9211 is only a grinding 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.

[0102] For a thicker optical fiber bracket, the first end face 9211 of the optical fiber bracket 921 may not be fully polished, so there may be a step surface, that is, the first end face 9211 of the optical fiber bracket 921 includes a polished surface and a step surface, and the polished surface and the step surface have different angles, the polished surface is an inclined surface, and the step surface is a vertical surface.

[0103] like Figure 8 and Fig. 9 As shown, the optical fiber bracket 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 .

[0104] like Figure 8 and Fig. 9As shown, the optical fiber bracket 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 enclose 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.

[0105] like Figure 8 and Fig. 9 As shown, the optical fiber bracket 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°, thereby making the first notch 9213a face the lens assembly 901.

[0106] like Figure 8 and Fig. 9 As shown, the optical fiber bracket 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 .

[0107] like Figure 8 and Fig. 9 As shown, the optical fiber bracket 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 notch 9213b. 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 vertically.

[0108] like Figure 8 and Fig. 9 As shown, the optical fiber bracket 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 so that the second notch 9213b is less than or equal to 90°, thereby making the first notch 9213a face the lens assembly 901.

[0109] The first notch 9213a and the second notch 9213b may be located at both sides of the optical fiber support 921, and the first notch 9213a and the second notch 9213b may form a notch 9213 to facilitate grasping the optical fiber support 921 when processing the optical fiber array 902. The notch 9213 may face the lens assembly 901.

[0110] Fig.10 FIG. 1 is a structural diagram of a lens assembly provided according to some embodiments at a certain viewing angle. Fig.10 As shown, in some embodiments, a first lens 912 may be disposed at the top of the cover groove 911 of the lens assembly 901 .

[0111] 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.

[0112] The first lens 912 may include a receiving coupling lens 9122. The receiving coupling lens 9122 may be located above the light receiving chip 312. The receiving coupling lens 9122 may couple the light beam reflected by the reflection surface 9131 to be incident into the light receiving chip 312.

[0113] 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 by the light-emitting surface of the light-emitting chip 311 can be collimated by the first lens 912 and the received light beam can be coupled to be incident on the photosensitive surface of the light-receiving chip 312.

[0114] Fig.11 It is a structural diagram of a lens assembly provided according to some embodiments at another viewing angle. Fig.12 A cross-sectional view of a lens assembly provided according to some embodiments at a certain viewing angle. Fig.13 FIG. 4 is a cross-sectional view of an optical transceiver component provided in accordance with some embodiments at a certain viewing angle. Fig.11 , Fig.12 and Fig.13 As shown, 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).

[0115] The positioning column 916 may include a first positioning column 9161. The first positioning column 9161 may be disposed corresponding to the first positioning hole 9215a, so that the first positioning column 9161 is inserted into the first positioning hole 9215.

[0116] The positioning column 916 may include a second positioning column 9162. The second positioning column 9162 may be disposed corresponding to the second positioning hole 9215b, so that the second positioning column 9162 is inserted into the second positioning hole 9215b.

[0117] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, a second lens 915 may be disposed in the wrapping cavity 914. The second lens 915 may be located between the first positioning post 9161 and the second positioning post 9162.

[0118] 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.

[0119] 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.

[0120] like Fig.11 As shown, in some embodiments, the wrapping cavity 914 may include a support plate 9148 .

[0121] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, the wrapping cavity 914 may include a avoidance plate. The avoidance plate may be connected to the support plate 9148.

[0122] like Fig.11 , Fig.12 and Fig.13 As shown, 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.

[0123] like Fig.11 , Fig.12 and Fig.13 As shown, the avoidance plate may include a second avoidance plate. The second avoidance plate may be arranged opposite to 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 arranged corresponding to the third side surface 9217a of the optical fiber bracket 921.

[0124] The first avoidance plate 9141, the support plate 9148 and the second avoidance plate can form a U-shaped first storage groove.

[0125] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, the wrapping cavity 914 may include a limiting plate 9142. The limiting plate 9142 may be connected to the supporting plate 9148. The limiting plate 9142 may be disposed corresponding to the notch 9213 of the optical fiber bracket 921.

[0126] 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 arranged 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.

[0127] 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 arranged 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.

[0128] In some embodiments, the limiting plate 9142 may include a first limiting plate 9142a. The 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.

[0129] In some embodiments, the limiting plate 9142 may include a second limiting plate 9142b. The second limiting plate 9142b may be disposed corresponding to the second notch 9213b of the optical fiber bracket 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 both sides of the wrapping cavity 914.

[0130] The first limiting plate 9142a, the supporting plate 9148 and the second limiting plate 9142b can form a U-shaped second storage groove.

[0131] In some embodiments, the second side surface of the limiting plate 9142 may protrude inwardly relative to the avoidance plate to reduce the width of the first storage hole.

[0132] In some embodiments, the second side surface of the first limiting plate 9142a may protrude inwardly relative to the first avoidance plate.

[0133] In some embodiments, the second side surface of the second limiting plate 9142b may protrude inwardly relative to the second avoidance plate.

[0134] The second side surface of the first limiting plate 9142a may protrude inwardly relative to the first avoidance plate, and the second side surface of the second limiting plate 9142b may protrude inwardly relative to the second avoidance plate, so as to reduce the width dimension of the first storage hole.

[0135] like Fig.11 As shown, 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.

[0136] The first limiting plate 9142a, the supporting plate 9148, the second limiting plate 9142b and the cover body 9147 can form a U-shaped storage hole.

[0137] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, the wrapping cavity 914 may include a stop protrusion 9143. The stop protrusion 9143 may be located outside the positioning column 916, that is, the stop protrusion 9143 is located outside the first positioning column 9161 and the second positioning column 9162. The stop protrusion 9143 may be arranged corresponding to the first end surface 9211 of the optical fiber bracket 921. The stop surface of the stop protrusion 9143 may contact the first end surface 9211 of the optical fiber bracket 921, so that the stop protrusion 9143 can be in contact with the first end surface 9211 of the optical fiber bracket 921, and the optical fiber bracket 921 is stopped 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.

[0138] The first end surface of the optical fiber bracket 921 protrudes relative to the notch 9213 , and the stop protrusion 9143 is recessed inwardly relative to the limiting plate 9142 , so that the optical fiber bracket 921 and the wrapping cavity 914 cooperate with each other.

[0139] like Fig.11 As shown, in some embodiments, the stop protrusion 9143 may be provided with an avoidance opening 9149. The avoidance opening 9149 faces the positioning column 916, so that the stop protrusion 9143 avoids the positioning column 916 and increases the area of ​​the stop protrusion 9143.

[0140] The stop protrusion 9143 may include a first stop protrusion 9143a. The first stop protrusion 9143a may be located outside the first positioning column 9161 and the second positioning column 9162. The stop surface of the first stop protrusion 9143a may be in contact with a portion of the first end surface of the optical fiber bracket 921, so that the first stop protrusion 9143a may be in contact with a portion of the first end surface of the optical fiber bracket 921, thereby causing the optical fiber bracket 921 to stop there. The stop surface of the first stop protrusion 9143a is a side surface facing the optical fiber bracket 921.

[0141] The stop protrusion 9143 may include a second stop protrusion 9143b. The second stop protrusion 9143b may be located outside the first positioning column 9161 and the second positioning column 9162. The stop surface of the second stop protrusion 9143b may be in contact with a portion of the first end surface of the optical fiber bracket 921, so that the second stop protrusion 9143b may be in contact with another portion of the first end surface of the optical fiber bracket 921, thereby causing the optical fiber bracket 921 to stop there. The stop surface of the second stop protrusion 9143b is a side surface facing the optical fiber bracket 921.

[0142] The first end face of the optical fiber bracket 921 is respectively in contact with the stop face of the first stop protrusion 9143a and the stop face of the second stop protrusion 9143b 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.

[0143] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, the wrapping cavity 914 may include a placement protrusion 9144. One side (fixed surface) of the placement protrusion 9144 may be connected to the other side (non-stop surface) of the stop protrusion 9143. A positioning column 916 may be fixedly provided on the placement protrusion 9144 to facilitate controlling the direction of the positioning column 916.

[0144] The object placement protrusion 9144 may include a first object placement protrusion 9144a. One side surface (fixing surface) of the first object placement protrusion 9144a may be connected to the other side surface (non-stop surface) of the first stop protrusion 9143a. A first positioning column 9161 may be fixedly disposed on the first object placement protrusion 9144a.

[0145] 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 column 9162 may be fixedly disposed on the second storage protrusion 9144b.

[0146] like Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, the wrapping 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 provided with a second lens 915. The second lens 915 may be located on one side of the positioning column 916.

[0147] The second lens 915 and the stop protrusion 9143 may be located on both sides of the positioning column 916 .

[0148] In some embodiments, the placement surface may be a first placement surface 9145. One end of the first placement surface 9145 may be connected to the other side surface of the second placement protrusion 9144b. A receiving collimating lens 9152 may be fixedly disposed on the first placement surface 9145.

[0149] In some embodiments, the placement surface includes a second placement surface 9146. One end of the second placement surface 9146 may be connected to the other side surface of the first placement protrusion 9144a. An emission coupling lens 9151 may be fixedly disposed on the second placement surface 9146.

[0150] 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 .

[0151] 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.

[0152] In some embodiments, the stop surface of the stop protrusion 9143 is a vertical surface, that is, the stop surface of the stop protrusion 9143 and the circuit board 300 are perpendicular to each other.

[0153] For a thicker optical fiber holder, the size of the step surface of the first end face 9211 after grinding is different, and the first end face of the optical fiber holder 921 contacts the stop surface of the stop protrusion 9143, which will introduce a new problem, that is, the size of the step surface of the first end face 9211 will affect the distance L between the vertex of the second lens 915 and the optical fiber end face of the optical fiber 922. Different L leads to inconsistent distances between the optimal light spot and the optical fiber end face, so the actual light spot size of the optical fiber end face is different, and the consistency of the optical module specifications is poor.

[0154] In order to solve the problem of poor consistency of optical module specifications, in some embodiments, the stop surface of the stop protrusion 9143 is a non-vertical surface.

[0155] 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 the area above the center point of the positioning column 916 in the stop surface of the stop protrusion 9143. The first stop portion may be an inclined surface. The first stop portion may be a depression. The first stop portion may be a step.

[0156] 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 column 916 in the stop surface of the stop protrusion 9143. The second stop portion may be a vertical surface. The second stop portion may be an inclined surface.

[0157] The distance between the first stop portion and the opening of the wrapping cavity 914 is 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.

[0158] 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.

[0159] Due to slight errors in the production process, 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 -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 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 0°, and 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 0° to 2°.

[0160] 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.

[0161] 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.

[0162] 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-right direction (i.e., the length direction of the lens assembly 901).

[0163] 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, which can not only increase 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 ensure that 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 distance between the optimal light spot and the optical fiber end face is the same, thereby avoiding defocusing and allowing the focused light spot to fall completely on the optical fiber end face.

[0164] The stop surface of the stop protrusion 9143 is at the same angle as the first end surface 9211 of the optical fiber holder 921, and the first end surface 9211 of the optical fiber holder 921 is at the same angle as the optical fiber end surface of the optical fiber 922, so that the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber holder 921, and the optical fiber end surface of the optical fiber 922 are all at the same angle. For example, the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber holder 921, and the optical fiber end surface of the optical fiber 922 are all at 3 to 13 degrees. The angle between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber bracket 921 and the optical fiber end surface of the optical fiber 922 is 3° to 8°, the angle between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber bracket 921 and the optical fiber end surface of the optical fiber 922 is 9° to 13°, and the angle between the stop surface of the stop protrusion 9143, the first end surface 9211 of the optical fiber bracket 921 and the optical fiber end surface of the optical fiber 922 is 8°.

[0165] Fig.14 FIG. 4 is a cross-sectional view of a lens assembly provided according to some embodiments at another viewing angle. Fig.14 The stop surface of the first stop protrusion 9143a (ie, the side facing the optical fiber bracket 921) is an inclined surface.

[0166] Fig.15 FIG. 4 is a cross-sectional view of an optical transceiver component provided in accordance with some embodiments at another viewing angle. Fig.15 As shown, the first end surface 9211 of the optical fiber bracket 921 is an inclined surface.

[0167] like Fig.15 As shown, the first end surface 9211 of the optical fiber bracket 921 stops at the first stop protrusion 9143a, and then the first end surface 9211 of the optical fiber bracket 921 stops at the stop protrusion 9143.

[0168] In some embodiments, the optical module includes a circuit board, a lens assembly and an optical fiber holder, the circuit board is provided with an optical chip, 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 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, a second lens and a positioning column are provided in the wrapping cavity, and the second lens is located on one side of the positioning column. The optical fiber holder wraps the optical fiber, and a positioning hole is provided on the first end face of the optical fiber holder, and the positioning column is inserted into the positioning hole to achieve the connection between the optical fiber holder and the lens assembly along the width direction and the height direction of the lens assembly. There is a gap between the optical fiber end face of the optical fiber and the second lens, and reflection occurs when the optical signal enters the optical fiber end face of the optical fiber through the second lens. In order to solve this problem, the optical fiber end face of the optical fiber needs to be processed into a bevel. Because the optical fiber end face of the optical fiber is a bevel relative to the optical fiber side face of the optical fiber, the reflected light will be reflected to other places according to the angle of the optical fiber end face, and will not return along the original path, so it will not interfere 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, the stop protrusion is located on the other side of the positioning column, 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 column 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.

[0169] 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 embodiments of the present disclosure.

Claims

1. An optical module, characterized in that: include: A circuit board having an optical chip disposed thereon; 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, a second lens and a positioning column are arranged in the wrapping cavity, and the second lens is located on one side of the positioning column; An optical fiber bracket wraps the optical fiber; a first end surface of the optical fiber bracket 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; There is a gap between the fiber end face of the optical fiber and the second lens, and the first end face of the optical fiber bracket and the fiber end face of the optical fiber are both inclined surfaces; The wrapping cavity includes a stop protrusion, 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 stop surface is an inclined surface, and the stop surface is in contact with the first end surface of the optical fiber bracket; 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, characterized in that: The angle difference between the stop surface and the first end surface of the optical fiber bracket is -2° to 2°; The first end face of the optical fiber bracket, the stop face and the optical fiber end face of the optical fiber are all at the same angle.

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

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

5. The optical module according to claim 1, characterized in that: 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.

6. The optical module according to claim 1, characterized in that: 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.

7. The optical module according to claim 1, characterized in that: A notch is provided on the side of the optical fiber bracket, and the notch faces the lens assembly; The wrapping cavity of the lens assembly further comprises a limiting plate and a placement protrusion, wherein 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 protrudes 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.

8. The optical module according to claim 1, characterized in that: The stop protrusion includes a first stop protrusion and a second stop protrusion, the first stop protrusion is located at the outer side of the first positioning column of the positioning column, and the second stop protrusion is located at the outer side of the second positioning column of the positioning column.

9. An optical module, characterized in that: include: A circuit board having an optical chip disposed thereon; 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, a second lens and a positioning column are arranged on the inner surface of the wrapping cavity, and the second lens is located on one side of the positioning column; An optical fiber bracket wraps the optical fiber; a first end surface of the optical fiber bracket 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; There is a gap between the fiber end face of the optical fiber and the second lens, the first end face of the optical fiber holder comprises a polished surface, and the polished surface and the fiber end face of the optical fiber are inclined surfaces at the same angle; The wrapping cavity includes a stop protrusion, 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 stop surface is an inclined surface, and the stop surface has the same angle as the grinding surface, so that the contact area between the stop surface and the grinding surface is increased when the stop surface is in contact with the grinding 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.

10. The optical module according to claim 9, characterized in that: The stop protrusion has an avoidance opening, and the avoidance opening is arranged corresponding to the positioning column to avoid the positioning column.

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