Optical module
By introducing a tube sleeve structure into the optical module to support the tube cap to control its deformation, the problem of poor coupling effect after laser welding is solved, a more stable distance between the lens and the tube cap port is achieved, and the coupling effect of the optical module is improved.
Patent Information
- Application Number
- CN202422048784.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-22
AI Technical Summary
During the laser welding of the optical module, the tube cap is heated to expand, causing the distance between the lens and the tube cap port to become larger, which makes the coupling effect poor.
An optical module is designed, wherein a tube sleeve is provided between the tube cap and the sleeve, and the tube sleeve includes a base and a fin, the base supports the first tube cap from the axial direction, and the fin supports the first tube cap from the circumferential direction, thereby controlling the amount of plastic deformation of the first tube cap and keeping the distance between the lens and the tube cap port within a suitable range.
Through the support of the tube sleeve, the axial deformation of the first tube cap by laser welding is reduced, ensuring the stability of the distance between the lens and the tube cap port, thereby improving the coupling effect.
Smart Images
Figure CN223038220U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of optical fiber communication technologies, and in particular, to an optical module. Background Art
[0002] The optical module includes a tube body and an optical emission component. The optical emission component is connected to the tube body through a sleeve. The optical emission component includes a tube cap, and the tube cap is connected to the sleeve by laser welding.
[0003] The laser welding process of the tube cap and the sleeve is as follows: The sleeve is fixed to the tube body. At this time, the tube cap is moved up and down for coupling until the tube cap is moved to a proper position to meet the coupling requirements. Then, the tube cap is fixed, and a laser welding gun emits laser light to irradiate on the sleeve to complete the welding. During the welding process, the tube cap expands due to heat, resulting in a relatively large plastic deformation amount of the tube cap in the axial direction. Further, the distance between the lens and the port of the tube cap becomes larger, thereby causing a poor coupling effect. Utility Model Content
[0004] The present disclosure provides an optical module to ensure the coupling effect.
[0005] In a first aspect, the present disclosure provides an optical module, including:
[0006] A tube body;
[0007] A first optical emission component connected to the tube body through a sleeve; one end of the sleeve is connected to the tube body, the other end of the sleeve is sleeved on the first optical emission component, and a support surface is formed on the inner wall of the sleeve; the first optical emission component includes a first tube cap, and the first tube cap is embedded in the sleeve; a first clamping groove is provided on the outer wall of the first tube cap or a second clamping groove is provided on the inner wall of the sleeve;
[0008] A tube sleeve located between the sleeve and the first tube cap; wherein, the tube sleeve includes:
[0009] A base, the bottom of which is connected to the support surface, and the top of which is correspondingly arranged with the top of the first tube cap to axially support the first tube cap;
[0010] Fins, the first end of which is connected to the top of the base, and the second end of which is clamped in the first clamping groove or the second clamping groove, so that the inner wall of the fins is connected to the first tube cap and the outer wall of the fins is connected to the sleeve.
[0011] In a second aspect, an optical module provided by the present disclosure includes:
[0012] A tube body;
[0013] The first optical receiving component is connected to the tube body through a sleeve; one end of the sleeve is connected to the tube body, the other end of the sleeve is sleeved on the first optical receiving component, and a support surface is formed on the inner wall of the sleeve; the first optical receiving component includes a second tube cap, and the second tube cap is embedded on the sleeve; a first clamping groove is provided on the outer wall of the second tube cap and / or a second clamping groove is provided on the inner wall of the sleeve;
[0014] A tube sleeve is located between the sleeve and the second tube cap; wherein, the tube sleeve includes:
[0015] A base, the bottom of which is connected to the support surface and the top of which is correspondingly arranged with the top of the second tube cap to axially support the second tube cap;
[0016] Fins, the first end of which is connected to the top of the base and the second end of which is clamped in the first clamping groove and / or the second clamping groove, so that the inner wall of the fins is connected to the second tube cap and the outer wall of the fins is connected to the sleeve, and the first clamping groove and the second clamping groove are correspondingly arranged.
[0017] Advantageous effects: The present disclosure provides an optical module, which includes a first tube cap. The first tube cap is embedded on the sleeve by laser welding. A first lens is provided on the top of the first tube cap, and the first lens is used for collimation of optical signals. The tube sleeve is located between the sleeve and the first tube cap. The tube sleeve includes a base and fins. The bottom of the base is connected to the support surface of the sleeve, and the top of the base is correspondingly arranged with the top of the first tube cap to axially support the first tube cap and provide a support force to the first tube cap. When the first tube cap expands due to heat, the base can squeeze the first tube cap under the action of the support force, control the plastic deformation amount of the first tube cap in the axial direction within a suitable range, and then control the distance between the first lens and the port of the first tube cap within the required range, so as to ensure the coupling effect. The fins, the first end of which is connected to the top of the base, axially support the first tube cap. In the present disclosure, the base of the tube sleeve axially supports the first tube cap, and the fins of the tube sleeve circumferentially support the first tube cap, control the plastic deformation amount of the first tube cap in the axial direction within a suitable range, and then control the distance between the first lens and the port of the first tube cap within the required range, so as to ensure the coupling effect. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0019] Figure 1Partial structure diagram of an optical communication system provided according to some embodiments;
[0020] Figure 2 Partial structure diagram of a host computer provided according to some embodiments;
[0021] Figure 3 Structure diagram of an optical module provided according to some embodiments;
[0022] Figure 4 Exploded view of an optical module provided according to some embodiments;
[0023] Figure 5 Internal structure diagram of an optical module provided according to some embodiments;
[0024] Figure 6 Structure diagram of an optical emission component provided according to some embodiments;
[0025] Figure 7A Assembly diagram of a sleeve, a ferrule and a first tube cap provided according to some embodiments;
[0026] Figure 7B Exploded view of a sleeve, a ferrule and a first tube cap provided according to some embodiments;
[0027] Figure 7C Cross-sectional view of a sleeve, a ferrule and a first tube cap provided according to some embodiments;
[0028] Figure 8 Exploded view of a ferrule and a first tube cap provided according to some embodiments;
[0029] Figure 9 Structure diagram of a sleeve provided according to some embodiments;
[0030] Figure 10 Assembly diagram of a sleeve and a ferrule provided according to some embodiments;
[0031] Figure 11 Structure diagram of another sleeve provided according to some embodiments;
[0032] Figure 12 Assembly diagram of another sleeve and a ferrule provided according to some embodiments;
[0033] Figure 13 Cross-sectional view of another sleeve, a ferrule and a first tube cap provided according to some embodiments. Detailed implementation manners
[0034] The following will clearly and detailedly describe some embodiments of the present disclosure in conjunction with the accompanying drawings. However, the described embodiments are only some embodiments of the present disclosure, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present disclosure fall within the scope of protection of the present disclosure.
[0035] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, i.e., "including, but not limited to"; the terms "first" and "second" cannot be construed as indicating or implying relative importance or an upper limit on quantity; the term "plurality" means two or more; the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body, can be directly connected, or can be indirectly connected through an intermediate medium; the use of the term "adapted to" or "configured to" implies open and inclusive language, which does not exclude a device adapted to or configured to perform additional tasks or steps; descriptions such as "parallel", "perpendicular", "same", "consistent", "flush", etc. do not limit to absolute mathematical theoretical relationships, but also include an acceptable error range in practice, and also include differences formed due to manufacturing reasons based on the same design concept.
[0036] In optical communication technologies, in order to establish information transfer between information processing devices, it is necessary to load information onto light and utilize the propagation of light to achieve information transfer. Here, the light loaded with information is an optical signal. When an optical signal is transmitted in an information transmission device, the loss of optical power can be reduced, so high-speed, long-distance, and low-cost information transfer can be achieved. The signals that information processing devices can recognize and process are electrical signals. Information processing devices generally include an Optical Network Unit (ONU), a gateway, a router, a switch, a mobile phone, a computer, a server, a tablet computer, a television set, etc., and information transmission devices generally include optical fibers and optical waveguides, etc.
[0037] 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.
[0038] 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 .
[0039] 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.
[0040] 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.
[0041] The host computer 100 includes a substantially rectangular housing and an optical module connection hole 102 disposed on the housing. The optical module connection hole 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.
[0042] The host computer 100 further includes an external electrical connection hole, which can access an electrical signal network. For example, the external electrical connection hole includes a Universal Serial Bus (USB) connection hole or a network cable connection hole 104. The network cable connection hole 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 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, a third electrical signal sent by the local information processing device 2000 is transmitted into the host computer 100 through the network cable 103. 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. 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 transmitted in the optical fiber 101 to the remote information processing device 1000. For example, a first optical signal from the remote information processing device 1000 propagates 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 according to the first electrical signal and transmits the fourth electrical signal into 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. In the above process of converting optical signals and electrical signals, the information does not change, but the encoding and decoding methods of the information can change.
[0043] In addition to including an optical network terminal, the host computer 100 further includes an Optical Line Terminal (OLT), an Optical Network Terminal (ONT), or a data center server, etc.
[0044] Figure 2 It is a partial structure diagram of a host computer provided 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. As Figure 2 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 radiator 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 radiator 107 has raised structures such as fins for increasing the heat dissipation area.
[0045] 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 conducted to the cage 106 and then diffused through the radiator 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 as to establish a two-way electrical signal connection between the optical module 200 and the host computer 100. In addition, the optical port of the optical module 200 is connected to the optical fiber 101, so as to establish a two-way optical signal connection between the optical module 200 and the optical fiber 101.
[0046] Figure 3 FIG. is a structural diagram of an optical module provided according to some embodiments. Figure 4 FIG. is an exploded view of an optical module provided according to some embodiments. As Figure 3 and Figure 4 shown, the optical module 200 includes a shell, a circuit board 300 disposed in the shell, an optical transmitting component 400, and an optical receiving component 500. However, the present disclosure is not limited thereto. In some embodiments, the optical module 200 includes one of the optical transmitting component 400 and the optical receiving component 500.
[0047] The shell includes an upper shell 201 and a lower shell 202. The upper shell 201 covers the lower shell 202 to form the above-mentioned shell having two openings 204 and 205; the outer contour of the shell generally presents a square body.
[0048] 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 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.
[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 perpendicular to 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 perpendicular to the cover plate 2011. The two upper side plates are combined with the two lower side plates 2022 to realize the upper shell 201 covering the lower shell 202.
[0050] The direction where the line connecting the two openings 204 and 205 is located may be consistent with the length direction of the optical module 200, or may not be consistent 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 right end), and the opening 205 is also located at the end of the optical module 200 ( Figure 3the left end). Alternatively, the opening 204 is located at the end of the optical module 200, while the opening 205 is located at the side of the optical module 200. The opening 204 is an electrical port, and the gold fingers of the circuit board 300 extend from the electrical port and are inserted into the electrical connector of the host computer 100; the opening 205 is an optical port and is configured to access an external optical fiber 101 so that the optical fiber 101 connects the optical transmitting component 400 and the optical receiving component 500 in the optical module 200.
[0051] Adopting the assembly method of combining the upper housing 201 and the lower housing 202 facilitates the installation of the circuit board 300, the optical transmitting component 400, the optical receiving component 500, etc. into the above-mentioned housing, and the upper housing 201 and the lower housing 202 can encapsulate and protect the above-mentioned devices. In addition, when assembling the circuit board 300, the optical transmitting component 400, the optical receiving component 500, etc., it is convenient for the deployment of the positioning components, heat dissipation components and electromagnetic shielding components of these devices, which is beneficial to the automated implementation of production.
[0052] In some embodiments, the upper housing 201 and the lower housing 202 are made of a metal material, which is beneficial to achieve electromagnetic shielding and heat dissipation.
[0053] 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.
[0054] For example, the unlocking component 600 is located outside the two lower side plates 2022 of the lower housing 202 and includes an engaging component that matches the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the engaging component of the unlocking component 600 fixes the optical module 200 in the cage 106; when the unlocking component 600 is pulled, the engaging component of the unlocking component 600 moves accordingly, thereby changing the connection relationship between the engaging component and the host computer to release the fixation of the optical module 200 to the host computer, so that the optical module 200 can be withdrawn from the cage 106.
[0055] The circuit board 300 includes circuit traces, electronic components, chips, etc. 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. The electronic components may include, for example, capacitors, resistors, triodes, Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs). The chips may include, for example, Microcontroller Units (MCUs), laser driver chips, Transimpedance Amplifiers (TIAs), Limiting Amplifiers (LIAs), Clock and Data Recovery (CDR) chips, power management chips, and Digital Signal Processing (DSP) chips.
[0056] The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also achieve a bearing function. For example, the rigid circuit board can stably bear the above-mentioned electronic components and chips; the rigid circuit board can also be inserted into the electrical connectors in the cage 106 of the host computer 100.
[0057] The circuit board 300 also includes a gold finger formed on its end surface. 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 electrically connected to the electrical connector in the cage 106. The gold finger can be provided only on the surface of one side of the circuit board 300 (for example, Figure 4 the upper surface shown), or can be provided on the upper and lower surfaces of the circuit board 300 to provide a larger number of pins, so as to adapt to occasions with a large demand for the number of pins. The gold finger is configured to establish an electrical connection with the host computer to achieve power supply, grounding, Inter-Integrated Circuit (I2C) signal transmission, data signal transmission, etc. Of course, flexible circuit boards are also used in some optical modules. The flexible circuit board is generally used in cooperation with the rigid circuit board as a supplement to the rigid circuit board.
[0058] At least one of the optical emission component 400 or the optical reception component 500 is located on the side of the circuit board 300 away from the gold finger.
[0059] In some embodiments, the optical emission component 400 and the optical reception component 500 are physically separated from the circuit board 300, and then are electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors respectively.
[0060] In some embodiments, at least one of the optical emission component 400 or the optical reception component 500 may be directly disposed on the circuit board 300. For example, at least one of the optical emission component 400 or the optical reception component 500 may be disposed on the surface of the circuit board 300 or on the side of the circuit board 300.
[0061] In some embodiments, the optical module may include a tube body 900. The tube body 900 has a connection hole. The optical emission component 400, the optical reception component 500, and the optical fiber adapter 700 may all be connected to the tube body 900 through the connection hole, so that the transmitted optical signal emitted by the optical emission component 400 is transmitted to the optical fiber adapter 700 through the optical components in the tube body 900, and the received optical signal emitted by the optical fiber adapter 700 is transmitted to the optical reception component 500 through the optical components in the tube body 900.
[0062] Figure 5 FIG. is an internal structure diagram of an optical module provided according to some embodiments. As Figure 5 shown, in some embodiments, the optical emission component 400 may include a first optical emission component 410. The first optical emission component 410 is used to emit a first transmitted optical signal.
[0063] In some embodiments, the optical emission component 400 may include a second optical emission component 420. The second optical emission component 420 is used to emit a second transmitted optical signal.
[0064] In some embodiments, the optical reception component 500 may include a first optical reception component 510. The first optical reception component 510 is used to receive a first received optical signal.
[0065] In some embodiments, the optical reception component 500 may include a second optical reception component 520. The second optical reception component 520 is used to receive a second received optical signal.
[0066] The first optical emission component 410, the second optical emission component 420, the first optical reception component 510, and the second optical reception component 520 all include a tube cap. One end of the tube cap and the sleeve may be connected by laser welding, and the other end of the sleeve may be fixedly connected to the tube body 900, so that the first optical emission component 410, the second optical emission component 420, the first optical reception component 510, and the second optical reception component 520 can all be connected to the tube body 900 through the sleeve.
[0067] Figure 6 FIG. is a structural diagram of an optical emission component provided according to some embodiments. As Figure 6As shown, in some embodiments, the first light emitting component 410 may include a first cap and a first base. The first cap covers the first base to form an emission cavity. A first laser chip is disposed in the emission cavity and is configured to emit a first emission optical signal. Of course, in the embodiments of the present disclosure, the second light emitting component 420 may include a first cap and a first base. The first cap covers the first base to form an emission cavity. A second laser chip is disposed in the emission cavity and is configured to emit a second emission optical signal.
[0068] In some embodiments, a first lens is disposed on the first cap. The first lens is a converging lens and can collimate the first emission optical signal emitted by the laser chip.
[0069] A first pin is disposed on the first base. The first pin is connected to the circuit board 300 through a flexible circuit board to achieve electrical connection between the first pin and the circuit board 300. The first pin extends upward from the bottom of the first base until it protrudes beyond the top of the first base and is wire-bonded to the pad where the laser chip is located to achieve electrical connection between the first pin and the laser chip. Further, an electrical signal is transmitted from the circuit board 300 to the laser chip in the first base through the first pin. Exemplarily, the first light emitting component 410 includes a first cap 412, a first base 411, and a first pin 413.
[0070] In some embodiments, the first light receiving component 510 may include a second cap and a second base. The second cap covers the second base to form a receiving cavity. A light receiving chip is disposed in the receiving cavity and is configured to receive an optical signal and convert the optical signal into an electrical signal. Of course, in the embodiments of the present disclosure, the second light receiving component 520 may include a second cap and a second base. The second cap covers the second base to form a receiving cavity. A light receiving chip is disposed in the receiving cavity and is configured to receive an optical signal and convert the optical signal into an electrical signal.
[0071] A second lens is disposed on the second cap. The second lens is a converging lens and can converge and couple the optical signal incident on the second lens to the light receiving chip.
[0072] A second pin is further disposed on the second base. One end of the second pin is connected to the circuit board 300 through a flexible circuit board to achieve electrical connection between the second pin and the circuit board 300. The second pin extends upward from the bottom of the second base until it protrudes beyond the top of the second base and is wire-bonded to the pad where the light receiving chip is located to achieve electrical connection between the second pin and the light receiving chip. Further, the electrical signal is transmitted to the circuit board 300 through the second pin.
[0073] Taking the first light-emitting component as an example, the laser welding process of the first cap and the sleeve is introduced. The laser welding process of the first cap and the sleeve is as follows: The sleeve is fixed to the tube body. At this time, coupling is performed by moving the first cap up and down until the first cap is moved to a suitable position to meet the coupling requirements, and then the first cap is fixed. The laser gun emits laser light and irradiates it on the sleeve to complete the welding. During the welding process, the first cap expands due to heat, resulting in a large plastic deformation amount of the first cap in the axial direction, which in turn causes the distance between the lens and the port of the first cap to increase, thereby resulting in a poor coupling effect. To solve this problem, in some embodiments, a bushing is provided between the first cap and the sleeve. The bushing can support the first cap to reduce the influence of laser welding on the deformation amount of the first cap in the axial direction, and then control the change amount of the distance between the lens and the port of the first cap within the required range, thereby ensuring the coupling efficiency.
[0074] Figure 7A FIG. is an assembly diagram of a sleeve, a bushing and a first cap according to some embodiments. Figure 7B FIG. is an exploded view of a sleeve, a bushing and a first cap according to some embodiments. Figure 7C FIG. is a cross-sectional view of a sleeve, a bushing and a first cap according to some embodiments. As Figure 7A 、 Figure 7B and Figure 7C shown, in some embodiments, the first cap 412 and the bushing 440 are embedded on the inner wall of the sleeve 430.
[0075] In some embodiments, a bushing 440 may be provided on the outer side of the first cap 412. The bushing 440 can support the first cap 412 to reduce the plastic deformation amount of the first cap 412 caused by laser welding.
[0076] Figure 8 FIG. is an exploded view of a bushing and a first cap according to some embodiments. As Figure 7B 、 Figure 7C and Figure 8 shown, in some embodiments, the bushing 440 may include a base 441. The top of the base 441 may be correspondingly arranged with the first end of the first cap 412 so that the top of the base 441 can support the first cap 412 axially to provide a supporting force to the first cap. When the first cap expands due to heat, the base can squeeze the first cap under the action of the supporting force, control the plastic deformation amount of the first cap in the axial direction within a suitable range, and then control the distance between the first lens and the port of the first cap within the required range, thereby ensuring the coupling effect.
[0077] When laser welding connection causes plastic deformation of the first cap 412 axially, the top of the base 441 can abut or not abut against the first end of the first cap 412, both of which can reduce the amount of plastic deformation of the first cap 412 axially.
[0078] In some embodiments, the sleeve 440 can include fins 442. The first end of the fin 442 can be connected to the top of the base 441. The second end of the fin 442 can be located between the outer wall of the first cap 412 and the inner wall of the sleeve 430. The inner wall of the fin 442 can be connected to the outer wall of the first cap 412 to support the first cap 412 circumferentially. The outer wall of the fin 442 can be connected to the inner wall of the sleeve 430.
[0079] The fin 442 and the base 441 can be an integrally formed structure or two independent structural members. The integrally formed structure of the fin 442 and the base 441 can improve the stability of the sleeve 440.
[0080] The laser welding gun emits laser to irradiate the welding point of the sleeve 430. After the welding point of the sleeve 430 melts, the laser irradiates the fin 442 of the sleeve 440. After the welding point of the fin 442 melts, the laser irradiates the first cap 412 to complete the first laser welding.
[0081] In some embodiments, the number of fins 442 is 3N1, and the 3N1 fins 442 are evenly arranged on the top of the base 441 so that three laser welding guns can emit laser to irradiate the sleeve 430 simultaneously, which is convenient for improving the welding efficiency, where N1 is an integer greater than or equal to 1. Exemplarily, the number of fins 442 can be 3.
[0082] In some embodiments, the height of the fin 442 ≥ 1 mm, which is convenient for improving the welding point to improve the welding effect.
[0083] In some embodiments, the width of the fin 442 ≥ 0.8 mm, which increases the area of the fin 442 and is convenient for welding on the fin 442.
[0084] In order to provide a receiving space for the fin 442, the first cap 412 and / or the sleeve 430 can be provided with a clamping groove so that the fin 442 can be placed in the clamping groove, and further the outer wall of the first cap 412 and the inner wall of the sleeve 430 can be connected.
[0085] In some embodiments, the outer wall of the first cap 412 can be provided with a first clamping groove 4123, and the fin 442 can be placed in the first clamping groove 4123.
[0086] In some embodiments, the inner wall of the sleeve 430 can be provided with a second clamping groove, and the fin 442 can be placed in the second clamping groove.
[0087] In some embodiments, a first engaging groove 4123 is provided on the outer wall of the first cap 412, and a second engaging groove is provided on the inner wall of the sleeve 430. The first engaging groove 4123 and the second engaging groove form an engaging groove, and the fins can be disposed in the engaging groove.
[0088] In some embodiments, the depth dimension of the engaging groove can be greater than or equal to the thickness dimension of the fin 442, so that the engaging groove can completely accommodate the fin 442 and prevent the fin 442 from protruding beyond the engaging groove.
[0089] In some embodiments, the height dimension of the engaging groove can be greater than or equal to the height dimension of the fin 442, so that the engaging groove can completely accommodate the fin 442 and prevent the fin 442 from protruding beyond the engaging groove.
[0090] The height difference between the engaging groove and the fin 442 is greater than or equal to a first preset value, so that the adjustment displacement of the first cap 412 is greater than or equal to the first preset value, facilitating the coupling of the first lens 414 in the first cap 412. Exemplarily, the first preset value is 1 mm, and the height difference between the engaging groove and the fin 442 is greater than or equal to 1 mm.
[0091] As Figure 7B and Figure 8 shown, the first cap 412 may include a cap body 4121. The outer wall of the cap body 4121 may be recessed to form a first engaging groove 4123. The first end of the first engaging groove 4123 may extend to the end of the first end of the cap body 4121, so that the first end of the first engaging groove 4123 has an opening, and further facilitating the second end of the fin 442 to be engaged in the first engaging groove 4123 through the opening of the first engaging groove 4123. The second end of the first engaging groove 4123 may not extend to the end of the second end of the cap body 4121, that is, it stops before the end of the second end of the cap body 4121 to ensure the strength of the first cap 412.
[0092] Here, the depth dimension of the first engaging groove 4123 can be greater than or equal to the thickness dimension of the fin 442, and the height dimension of the first engaging groove 4123 can be greater than or equal to the height dimension of the fin 442.
[0093] In some embodiments, the number of the first engaging grooves 4123 is 3N2, and the 3N2 first engaging grooves 4123 are evenly distributed on the outer wall of the cap body 4121, so that three laser welding torches can simultaneously emit laser to irradiate the sleeve 430, facilitating the improvement of the welding efficiency, where N2 is an integer greater than or equal to 1. Exemplarily, the number of the first engaging grooves 4123 can be 3.
[0094] Since the first engaging groove 4123 cooperates with the fin 442, in some embodiments, the number of the fins 442 is equal to the number of the first engaging grooves 4123, that is, 3N1 = 3N2.
[0095] In some embodiments, the first cap 412 may include a top 4125. The edge of the top 4125 may be connected to the first end of the cap body 4121. A first lens 414 is provided on the top 4125. The first lens 414 is a collimating lens and can collimate the optical signal emitted by the laser chip.
[0096] The first lens 414 may not protrude from the top 4125, or the first lens 414 may protrude from the top 4125.
[0097] When the first lens 414 protrudes from the top 4125, in order to protect the first lens 414, in some embodiments, a bracket 4126 may be provided on the top 4125. The bracket 4126 has a placement through hole 4127, and the first lens 414 may be located at the placement through hole 4127 of the bracket 4126. The first lens 414 being located at the placement through hole 4127 of the bracket 4126 can not only protect the first lens 414 but also allow the optical signal collimated by the first lens 414 to be emitted.
[0098] In some embodiments, the first cap 412 may include a lip 4122. The inner wall of the lip 4122 may be connected to the outer wall of the second end of the cap body 4121. The lip 4122 may be connected to the first socket 411 to cover the first socket 411 with the first cap 412. The lip 4122 may have a calibration groove 4124. The calibration groove 4124 may be correspondingly arranged with the first clamping groove 4123 to facilitate determining the position of the first clamping groove 4123 through the calibration groove 4124 and further determining the solder joint of the first welding.
[0099] The number of the calibration grooves 4124 may be one or 3N1. If the number of the calibration grooves 4124 is one, the calibration groove 4124 may be correspondingly arranged with one first clamping groove 4123. If the number of the calibration grooves 4124 is 3N1, then the calibration grooves 4124 and the first clamping grooves 4123 may be correspondingly arranged in sequence.
[0100] Figure 9 It is a structural diagram of a sleeve provided according to some embodiments. As Figure 9 shown, in some embodiments, a support surface 431 may be formed by the inner wall of the sleeve 430 extending towards the center. The support surface 431 can support the structural member.
[0101] In some embodiments, a limiting surface 432 may be formed by the inner wall of the sleeve 430 extending towards the center. The limiting surface 432 is connected to the support surface 431 through a connecting surface. The limiting surface 432 is recessed inward relative to the support surface 431 so that the limiting surface 432, the connecting surface and the support surface 431 form a step. The limiting surface 432 can limit the position of the structural member.
[0102] Figure 10 An assembly drawing of a sleeve and a bushing provided according to some embodiments. As Figure 7C , Figure 9 and Figure 10 shown, in some embodiments, the base 441 of the bushing 440 is disposed on the support surface 431, that is, the bottom of the base 441 is connected to the support surface 431 so that the support surface 431 can support the bushing 440.
[0103] In some embodiments, the limiting surface 432 can be correspondingly arranged with the bracket 4126 of the first pipe cap 412 to limit the position of the bracket 4126.
[0104] Figure 11 Another structural diagram of a sleeve provided according to some embodiments. Figure 12 Another assembly drawing of a sleeve and a bushing provided according to some embodiments. Figure 13 Another cross-sectional view of a sleeve, a bushing, and a first pipe cap provided according to some embodiments. As Figure 11 , Figure 12 and Figure 13 shown, in some embodiments, a support surface 431 can be formed by the inner wall of the sleeve 430 extending towards the center. The support surface 431 can support the structural member.
[0105] In some embodiments, a limiting surface 432 can be formed by the inner wall of the sleeve 430 extending towards the center. The limiting surface 432 is connected to the support surface 431 through a connecting surface. The limiting surface 432 is recessed inward relative to the support surface 431 so that the limiting surface 432, the connecting surface, and the support surface 431 form a step. The limiting surface 432 can limit the position of the structural member.
[0106] In some embodiments, a second clamping groove 433 is formed by the inner wall of the sleeve 430 being recessed. The first end of the second clamping groove 433 extends to the support surface 431 so that the fin 442 of the bushing 440 located on the support surface 431 can be located within the second clamping groove 433. The second end of the second clamping groove 433 extends to the end of the second end of the sleeve 430 so that the second end of the second clamping groove 433 has an opening, facilitating the determination of the welding point for the first welding.
[0107] Here, the depth dimension of the second clamping groove 433 can be greater than or equal to the thickness dimension of the fin 442, and the height dimension of the second clamping groove 433 can be greater than or equal to the height dimension of the fin 442.
[0108] Since the depth dimension of the second engaging groove 433 is greater than or equal to the thickness dimension of the fin 442, and the height dimension of the second engaging groove 433 is greater than or equal to the height dimension of the fin 442, there is no need to provide a first engaging groove 4123 on the outer wall of the first tube cap 412. The first tube cap 412 here can be obtained by deleting the first engaging groove 4123 from the first tube cap 412 in Figure 8 .
[0109] If the depth dimension of the second engaging groove 433 is less than the thickness dimension of the fin 442, it is necessary to provide a first engaging groove 4123 on the outer wall of the first tube cap 412. The first engaging groove 4123 is provided corresponding to the second engaging groove 433. The engaging groove formed by the first engaging groove 4123 and the second engaging groove 433 has a depth dimension greater than or equal to the thickness dimension of the fin 442 so that the fin 442 can be engaged in the engaging groove.
[0110] In some embodiments, the lip 4122 of the first tube cap 412 has a calibration groove 4124, and / or the second end of the second engaging groove 433 of the sleeve 430 has an opening to facilitate determining the position of the engaging groove.
[0111] The connection relationship between the first tube cap and the sleeve of the present disclosure is also applicable to the first tube cap and the sleeve of the second light emitting component 420, and is also applicable to the second tube cap and the sleeve of the first light receiving component 510 and the second light receiving component 520.
[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, and are not intended to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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: tube body; A first light emitting assembly is connected to the tube body through a sleeve; one end of the sleeve is connected to the tube body, and the other end of the sleeve is sleeved on the first light emitting assembly, and the inner wall of the sleeve forms a supporting surface; the first light emitting assembly includes a first pipe cap, and the first pipe cap is embedded in the sleeve; the outer wall of the first pipe cap is provided with a first clamping groove or the inner wall of the sleeve is provided with a second clamping groove; A pipe sleeve is located between the sleeve and the first pipe cap; wherein the pipe sleeve comprises: A base, the bottom of which is connected to the support surface, and the top of which is arranged corresponding to the top of the first pipe cap, so as to support the first pipe cap in an axial direction; The fin has a first end connected to the top of the base and a second end clamped in the first clamping groove or the second clamping groove, so that the inner wall of the fin is connected to the first tube cap and the outer wall of the fin is connected to the sleeve.
2. The optical module according to claim 1, characterized in that: The first end of the first clamping groove extends to the first end portion of the first tube cap so that the first end of the first clamping groove has an opening, and the second end of the second clamping groove does not extend to the second end portion of the first tube cap.
3. The optical module according to claim 1, characterized in that: The first end of the second clamping groove extends to the supporting surface, and the second end of the second clamping groove extends to the second end portion of the sleeve, so that the second end of the second clamping groove has an opening.
4. The optical module according to claim 1, characterized in that: The height dimension of the first snap-fit groove or the second snap-fit groove is greater than or equal to the height dimension of the fin, the depth dimension of the first snap-fit groove or the second snap-fit groove is greater than or equal to the thickness dimension of the fin, the width dimension of the first snap-fit groove or the second snap-fit groove is greater than or equal to the width dimension of the fin, and the height difference between the first snap-fit groove or the second snap-fit groove and the fin is greater than or equal to a first preset value.
5. The optical module according to claim 1, characterized in that: The number of the fins, the first clamping slots or the second clamping slots is the same, and is an integer multiple of 3.
6. The optical module according to claim 1, characterized in that: The first pipe cap comprises a lip, the lip has a calibration groove, and the calibration groove is arranged corresponding to the first clamping groove.
7. The optical module according to claim 1, characterized in that: A first lens is disposed on the top of the first tube cap, the first lens protrudes from the top of the first tube cap, a bracket is disposed on the top of the first tube cap, the bracket has a placement through hole, and the first lens is located in the placement through hole to protect the first lens; The inner wall of the sleeve forms a limiting surface, and the limiting surface is arranged corresponding to the bracket to limit the position of the bracket.
8. An optical module, characterized in that: include: tube body; A first light receiving assembly is connected to the tube body through a sleeve; one end of the sleeve is connected to the tube body, and the other end of the sleeve is sleeved on the first light receiving assembly, and the inner wall of the sleeve forms a supporting surface; the first light receiving assembly includes a second pipe cap, and the second pipe cap is embedded in the sleeve; the outer wall of the second pipe cap is provided with a first clamping groove and / or the inner wall of the sleeve is provided with a second clamping groove; A pipe sleeve is located between the sleeve and the second pipe cap; wherein the pipe sleeve comprises: A base, the bottom of which is connected to the support surface, and the top of which is arranged corresponding to the top of the second pipe cap, so as to support the second pipe cap in an axial direction; The fin has a first end connected to the top of the base and a second end clamped in the first clamping groove and / or the second clamping groove, so that the inner wall of the fin is connected to the second tube cap and the outer wall of the fin is connected to the sleeve, and the first clamping groove and the second clamping groove are correspondingly arranged.
9. The optical module according to claim 8, characterized in that: The fin is clamped in the first clamping groove, the second pipe cap comprises a lip, the lip has a calibration groove, and the calibration groove is arranged corresponding to the first clamping groove; The fin is clamped in the second clamping groove, and the second end of the second clamping groove has an opening; The fin is clamped in the first clamping groove and the second clamping groove, the lip is provided with the calibration groove and / or the second end of the second clamping groove has an opening.
10. The optical module according to claim 8, characterized in that: The fin is clamped in the first clamping groove and the second clamping groove, and the sum of the depth dimensions of the first clamping groove and the second clamping groove is greater than or equal to the thickness dimension of the fin.