An air-tight parallel optical module
By designing a hermetically sealed parallel optical module and adopting hermetically sealed packaging and lens array structure, the problems of unstable connection and optical path interference of traditional optical modules in harsh environments are solved, and stable propagation of optical signals and improved reliability are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HISENSE & JONHON OPTICAL ELECTRICAL TECH CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional optical modules cannot meet the requirements for connection stability and optical path interference in harsh communication environments.
Design a hermetically sealed parallel optical module with a hermetically sealed structure, including a housing assembly, an optical fiber socket, and a lens. The distance between the lens and the optical fiber is adjusted by a pad, and the optical fiber is positioned using a microlens array and guide pins. The module is then fixed with locking components and a metal substrate to ensure stable propagation of the optical signal.
It improves the reliability and lifespan of optical modules in harsh environments, maintains the focal length consistency and propagation stability of optical signals, and enhances the reliability of the optical path.
Smart Images
Figure CN224581730U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of optical fiber communication, and specifically to an hermetically sealed parallel optical module. Background Technology
[0002] With the promotion and in-depth application of optical communication, various types of packaged optical modules have emerged to adapt to different application scenarios, such as SFF, SFP, and QSFP.
[0003] With the expansion of optical communication applications, optical modules for specialized fields or special environments are also constantly evolving, such as those designed to withstand vibration, shock, or temperature changes during operation. Additionally, traditional fiber optic sockets suffer from the problem of unstable connections affecting the optical path.
[0004] In summary, there is a need to design a hermetically sealed parallel optical module to solve the aforementioned problems in the existing technology. Utility Model Content
[0005] To address the problems in the prior art, this invention provides a hermetically sealed parallel optical module, which solves the problem that traditional optical modules cannot meet the requirements of harsh communication environments.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A hermetically sealed parallel optical module includes: A housing assembly includes a cover plate, sidewalls, and a base plate; the interior of the housing assembly forms a sealed installation space; each of the sidewalls is provided with a light window; the light window is fixed to the sidewall by a light window bracket; An optical fiber socket includes a housing and a lens; the lens is located on the end face of the housing, and the end face is fixed to the optical window bracket by a connector; The fiber optic socket also includes a pad; the pad is located between the lens and the fiber optic cable, the pad is connected to the housing, and the distance between the pad and the lens is adjustable.
[0007] In some embodiments of this invention, the lens is a 0° lens on the side near the optical window, and a microlens array is provided on the side near the optical fiber.
[0008] In some embodiments of this utility model, guide pins are also provided on both sides of the lens. One end of the guide pin is close to the optical window support, and the other end is used to assist in positioning the optical fiber array in the optical fiber with the microlens array.
[0009] In some embodiments of this utility model, the fiber optic socket further includes a locking member, which is sleeved on the outer periphery of the housing.
[0010] In some embodiments of this utility model, the locking member includes a sleeve portion and symmetrically arranged clamping portions; the sleeve portion and the clamping portions are integrally formed.
[0011] In some embodiments of this utility model, the sleeve part is provided with at least one slot, and the housing is provided with a boss corresponding to the position of the slot. When the sleeve part is inserted into the housing, the slot engages with the boss.
[0012] In some embodiments of this utility model, the clamping part is a bendable metal sheet structure.
[0013] In some embodiments of this utility model, the light window bracket is welded and fixed to the side wall; the light window bracket is provided with a through part and a plug-in part; the side wall is provided with a through hole that mates with the plug-in part; the through part is provided with an installation part on the side near the installation space; the installation part is used to fix the light window.
[0014] In some embodiments of this utility model, the substrate includes a ceramic substrate and a metal substrate; the ceramic substrate is used to fix the control chip; the metal substrate is used to fix the optical chip and the electrical chip; the electrical chip is used to drive or amplify the signal of the optical chip, and the optical chip is used to transmit or receive optical signals; the control chip is used for signal sampling and configuration and control of the electrical chip.
[0015] In some embodiments of this utility model, the tube shell assembly is an hermetically sealed metal structure, the sidewall and the substrate form a groove structure, the opening of the groove structure faces the cover plate, and the cover plate covers the opening of the groove and is integrally connected with the sidewall.
[0016] In some embodiments of this utility model, the bottom of the substrate is provided with a plurality of pins; the pins are LGA pins, BGA pins or butterfly pins.
[0017] The technical solution of this utility model has the following technical advantages over the prior art: This invention protects the internal active components from the influence of the surrounding environment by using hermetically sealed packaging for the optical module, thereby improving the lifespan and reliability of the internal components and circuits. At the same time, the use of an optical fiber socket with a pad can determine the fixed position according to the focal length of the microlens array, thus maintaining the consistency of the focal length of the optical signal and the stability of the optical signal propagation. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of a hermetically sealed parallel optical module shown in an embodiment of the present invention. Figure 1 .
[0020] Figure 2 This is a schematic diagram of the structure of a hermetically sealed parallel optical module shown in an embodiment of the present invention. Figure 2 .
[0021] Figure 3 This is a schematic diagram of the external structure of the fiber optic socket shown in an embodiment of the present invention.
[0022] Figure 4 This is a schematic diagram of the internal structure of the fiber optic socket shown in an embodiment of the present invention.
[0023] Figure 5 This is a schematic diagram of the structure of the tube shell assembly shown in an embodiment of the present invention.
[0024] Figure 6 This is a schematic diagram of the structure of the light window bracket shown in an embodiment of the present invention.
[0025] Reference numerals: 100, tube shell assembly; 110, cover plate; 120, side wall; 121, upper end face; 122, through hole; 130, substrate; 131, ceramic substrate; 132, metal substrate; 140, light window bracket; 141, insertion part; 142, mounting part; 143, limiting part; 144, through part; 150, light window; 210. Control chip; 220. Optical chip; 230. Electrical chip; 300. Fiber optic socket; 310. Housing; 311. End face; 320. Lens; 330. Connector; 340. Guide pin; 350. Pad; 360. Locking element; 361. Socket; 362. Clamping part. Detailed Implementation
[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0032] Reference Figures 1-2As shown, a hermetically sealed parallel optical module includes: The housing assembly 100 includes a cover plate 110, a side wall 120, and a base plate 130; the interior of the housing assembly 100 forms a sealed installation space; each of the side walls 120 is provided with a light window 150; the light window 150 is fixed to the side wall 120 by a light window bracket 140. The fiber optic socket 300 includes a housing 310 and a lens 320; the lens 320 is located on the end face 311 of the housing 310, and the end face 311 is fixed to the optical window bracket 140 by a connector 330. The fiber optic socket 300 is further provided with a pad 350; the pad 350 is located between the lens 320 and the fiber optic cable, the pad 350 is connected to the housing 310, and the distance between the pad 350 and the lens 320 is adjustable.
[0033] Specifically, the housing assembly 100 is a hermetically sealed structure that can protect the internal active devices from the influence of the surrounding environment, including physical and chemical influences. The housing assembly 100 has a flat cuboid structure, which not only increases the heat dissipation area of the optical module but also reduces the overall size of the structure, making it suitable for small-space applications. In addition, the fiber optic socket 300 is connected to the side of the housing assembly 100, enabling multi-path parallel horizontal light output from the side. The optical port is pluggable, the optical path is glue-free, and the reliability of the optical path is improved.
[0034] In some embodiments of this utility model, reference is made to Figure 3 and Figure 4 As shown, the fiber optic socket 300 includes a housing 310 and a lens 320; the lens 320 is located on the end face 311 of the housing 310, and the end face 311 is fixed to the optical window bracket 140 by a connector 330.
[0035] Specifically, continue to refer to Figure 3 As shown, the size of the connector 330 is similar to the size of the end face 311 of the housing 310. In order not to affect the propagation of the light path, the connector 330 is also through, and the size of the through position is not less than the size of the lens 320.
[0036] In some embodiments of this utility model, the lens 320 is a 0° lens 320 on the side near the optical window 150, and the lens 320 is provided with a microlens array on the side near the optical fiber.
[0037] Specifically, the housing 310 has a certain thickness, and the lens 320 is embedded in the housing 310, specifically in the housing 310 located on the end face 311.
[0038] The 0° lens 320 setting can avoid the deflection of the optical path, so that the optical signal can enter the microlens array in parallel, and then the microlens array can focus the optical signal onto the end face of the optical fiber; or keep the optical signal collimated by the microlens array horizontally into the optical window 150; thereby completing the propagation of the optical signal.
[0039] In some embodiments of this utility model, guide pins 340 are also provided on both sides of the lens 320. One end of the guide pin 340 is close to the optical window support 140, and the other end is used to assist the fiber array in the optical fiber in positioning the microlens array.
[0040] Specifically, continue to refer to Figure 3 As shown, the guide pin 340 passes through the end face 311 of the housing 310 and extends into the through position of the connector 330. When the connector 330 is fixed to the light window bracket 140, the guide pin 340 can contact the light window bracket 140, or it can be directly fixed to the light window 150 by welding, or it can be close to the light window bracket 140 but not in contact.
[0041] In some embodiments of this utility model, reference is made to Figure 4 As shown, the fiber optic socket 300 is also provided with a pad 350; the pad 350 is located between the lens 320 and the optical fiber, the pad 350 is connected to the housing 310, and the distance between the pad 350 and the lens 320 is adjustable.
[0042] Specifically, the two sides of the pad 350 are connected to the two side walls 120 of the housing 310. The fixed position of the pad 350 on the housing 310 can be determined according to the focal length of the microlens array. During installation, the end face of the optical fiber is connected to the pad 350. The optical signal emitted by the optical fiber is transmitted through the distance between the pad 350 and the microlens array and reaches the microlens array. At this time, the focal point of the optical signal falls on the microlens array, thus the microlens array completes the collimation of the optical signal. The pad 350 can maintain the consistent and stable focal length of the optical signal.
[0043] In some embodiments of this utility model, the pad 350 is provided with a hollow structure, and the microlens array is arranged opposite to the hollow structure; continuing to refer to Figure 4 As shown, the length of the hollow structure is not less than the length of the microlens array, thus ensuring that the optical path enters the optical fiber intact.
[0044] In some embodiments of this utility model, the fiber optic socket 300 further includes a locking member 360, which is sleeved on the outer periphery of the housing 310. During use, after the fiber optic cable is inserted into the fiber optic socket 300, the locking member 360 limits the fiber optic cable, effectively preventing the fiber optic cable from detaching.
[0045] In some embodiments of this utility model, the locking member 360 includes a sleeve portion 361 and symmetrically arranged clamping portions 362; the sleeve portion 361 and the clamping portion 362 are integrally formed.
[0046] Specifically, continue to refer to Figure 3 As shown, the sleeve portion 361 is an annular structure adapted to the outer periphery of the housing 310. To improve the stability of the fixation between the sleeve portion 361 and the housing 310, the sleeve portion 361 is provided with at least one slot, and the housing 310 is provided with a boss corresponding to the position of the slot. During use, after the sleeve portion 361 is inserted into the housing 310, the slot engages with the boss, thereby completing the fixation of the locking member 360 and the housing 310.
[0047] In some embodiments of this utility model, the clamping part 362 is a bendable metal sheet structure. Using a metal material for the clamping part 362 ensures that it has a certain degree of elasticity. When the fiber optic plug is inserted into the housing 310, the distance between the two clamping parts 362 increases as it passes through them. After the fiber optic plug enters the housing 310, the distance between the two clamping parts 362 returns to its initial distance, continuing to limit the fiber optic plug from falling out.
[0048] In some embodiments of this utility model, the housing assembly 100 is a hermetically sealed metal structure, the sidewall 120 and the substrate 130 form a groove structure, the opening of the groove structure faces the cover plate 110, the cover plate 110 covers the opening of the groove and is integrated with the sidewall 120.
[0049] In some embodiments, the sidewall 120 and the cover plate 110 in the housing assembly 100 are both made of metal and can be fixed by welding, such as eutectic welding. Specifically, the sidewall 120 is a metal plate with a certain thickness, that is, the sidewall 120 has a structure with an upper end face 121 and a lower end face. The upper end face 121 is connected to the cover plate 110 and the lower end face is connected to the substrate 130.
[0050] In some embodiments, the edge thickness of the cover plate 110 is less than the thickness at the middle position of the cover plate 110. This thickness difference is reflected on the lower surface of the cover plate 110, that is, the surface that contacts the upper end face 121 of the side wall 120; wherein, referring to Figure 1 As shown, the upper surface of the cover plate 110 is flat. The thinner edge is used to contact and encapsulate the upper end face 121 of the sidewall 120, and the encapsulation method can also be adhesive sealing.
[0051] In some embodiments of this utility model, reference is made to Figure 5As shown, the substrate 130 includes a ceramic substrate 131 and a metal substrate 132; the ceramic substrate 131 is used to fix the control chip 210; the metal substrate 132 is used to fix the optical chip 220 and the electrical chip 230; the electrical chip 230 is used to drive or amplify the signal of the optical chip 220, and the optical chip 220 is used to transmit or receive optical signals; the control chip 210 is used for signal sampling and configuration and control of the electrical chip 230.
[0052] Specifically, the substrate 130 is made of a ceramic substrate 131, which has a certain thickness. Similarly, the edge thickness of the ceramic substrate 131 is less than the thickness of the ceramic substrate 131 used to fix the position of the control chip 210. This thickness difference is reflected on the upper surface of the ceramic substrate 131, that is, the surface in contact with the sidewall 120. The edge position with the smaller thickness is used to contact the lower end face of the sidewall 120 for encapsulation. The encapsulation method can be solder encapsulation, such as eutectic bonding.
[0053] In some embodiments, the upper surface of the ceramic substrate 131 is further provided with a mounting groove for placing the metal substrate 132; the metal substrate 132 is used to mount the folding lens 320 assembly and the optical chip 220; see reference. Figure 5 As shown, other components are also connected to the upper surface of the ceramic substrate 131 by gold wire bonding.
[0054] In some embodiments, reference is made to Figure 5 As shown, the lower surface of the ceramic substrate 131, i.e. the surface away from the mounting space, has multiple mounting slots, which can be used to mount several pins; the pins are LGA pins, BGA pins or butterfly pins.
[0055] In some embodiments of this utility model, reference is made to Figure 1 and Figure 6 As shown, the light window 150 is fixed to the side wall 120 by the light window bracket 140; the light window bracket 140 is welded to the side wall 120.
[0056] In some embodiments of this utility model, the light window bracket 140 is provided with a through portion 144 and a plug portion 141; the side wall 120 is provided with a through hole 122 that cooperates with the plug portion 141; the through portion 144 is provided with a mounting portion 142 on the side near the installation space; the mounting portion 142 is used to fix the light window 150.
[0057] Specifically, refer to Figure 6 As shown, the optical window bracket 140 includes a limiting part 143, a plug-in part 141, and a mounting part 142; a through part 144 passes through the limiting part 143, the plug-in part 141, and the mounting part 142, and the width of the through part 144 is not less than the parallel width of the optical path.
[0058] In some embodiments of this utility model, a limiting part 143 is disposed between the plug-in part 141 and the fiber optic socket 300; the size of the limiting part 143 is larger than the size of the plug-in part 141, and the inner diameter of the through hole 122 on the side wall 120 matches the outer diameter of the plug-in part 141; when the plug-in part 141 is inserted into the through hole 122, the limiting part 143 fits against the outer surface of the side wall 120, and the limiting part 143 provides a welding position between the optical window bracket 140 and the side wall 120; in addition, the surface of the limiting part 143 away from the side wall 120 is used for welding and fixing with the fiber optic socket 300.
[0059] In some embodiments of this utility model, the thickness of the plug-in portion 141 is not less than the thickness of the side wall 120. In order to avoid the plug-in portion 141 protruding a certain structure relative to the inner surface of the side wall 120 due to the thickness of the plug-in portion 141 being greater than the thickness of the side wall 120, the substrate 130 is provided with a certain clearance space below the through hole 122 of the side wall 120, so that the limiting portion 143 can be tightly fitted with the outer surface of the side wall 120, thereby increasing the airtightness of the optical module.
[0060] In some embodiments of this utility model, the light window 150 is generally rectangular in shape. In order to fix the light window 150, the outer diameter of the mounting part 142 is smaller than the outer diameter of the plug-in part 141, so that the mounting part 142 forms a mounting platform of a certain width relative to the plug-in part 141, and the light window 150 is welded and fixed to the mounting platform.
[0061] In some embodiments of this utility model, the light window bracket 140 is an integrally formed structure, that is, the limiting part 143, the insertion part 141 and the mounting part 142 are an integral structure; for example, the light window bracket 140 can be formed by injection molding in one step using a mold with a corresponding structure.
[0062] In some embodiments of this utility model, the light window 150 may be made of optical waveguide materials such as ceramic or glass.
[0063] The technical solution of this utility model has the following technical advantages over the prior art: This invention protects the internal active components from the influence of the surrounding environment by using hermetically sealed packaging for the optical module, thereby improving the lifespan and reliability of the internal components and circuits. At the same time, the use of an optical fiber socket 300 with a pad 350 can determine the fixed position according to the focal length of the microlens array, thus maintaining the consistency of the focal length of the optical signal and the stability of the optical signal propagation.
[0064] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0065] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A hermetically sealed parallel optical module, characterized in that, include: The housing assembly includes a cover plate, sidewalls, and a base plate; the interior of the housing assembly forms a sealed installation space. Each of the aforementioned side walls is provided with a light window; the light window is fixed to the side wall by a light window bracket; An optical fiber socket includes a housing and a lens; the lens is located on the end face of the housing, and the end face is fixed to the optical window bracket by a connector; The fiber optic socket also includes a pad; the pad is located between the lens and the fiber optic cable, the pad is connected to the housing, and the distance between the pad and the lens is adjustable.
2. The hermetically sealed parallel optical module according to claim 1, characterized in that, On the side near the optical window, the lens is a 0° lens, and on the side near the optical fiber, the lens is provided with a microlens array.
3. The hermetically sealed parallel optical module according to claim 2, characterized in that, The lens is also provided with guide pins on both sides. One end of the guide pin is close to the optical window support, and the other end is used to assist in positioning the fiber array in the optical fiber with the microlens array.
4. The hermetically sealed parallel optical module according to claim 1, characterized in that, The fiber optic socket also includes a locking element, which is fitted onto the outer periphery of the housing.
5. A hermetically sealed parallel optical module according to claim 4, characterized in that, The locking component includes a sleeve portion and symmetrically arranged clamping portions; the sleeve portion and the clamping portions are integrally formed.
6. A hermetically sealed parallel optical module according to claim 5, characterized in that, The socket is provided with at least one slot, and the housing is provided with a boss corresponding to the position of the slot. When the socket is inserted into the housing, the slot engages with the boss.
7. A hermetically sealed parallel optical module according to claim 5, characterized in that, The clamping part is a bendable metal sheet structure.
8. A hermetically sealed parallel optical module according to claim 1, characterized in that, The light window bracket is welded and fixed to the side wall; the light window bracket has a through part and a plug-in part; the side wall has a through hole that mates with the plug-in part; the through part has an installation part on the side near the installation space; the installation part is used to fix the light window.
9. A hermetically sealed parallel optical module according to claim 1, characterized in that, The casing assembly is a hermetically sealed metal structure. The sidewall and the substrate form a groove structure. The opening of the groove structure faces the cover plate. The cover plate covers the opening of the groove and is integrated with the sidewall.
10. A hermetically sealed parallel optical module according to claim 1, characterized in that, The substrate includes a ceramic substrate and a metal substrate; the ceramic substrate is used to fix the control chip; the metal substrate is used to fix the optical chip and the electrical chip; the electrical chip is used to drive or amplify the signal of the optical chip, and the optical chip is used to transmit or receive optical signals; the control chip is used for signal sampling and configuration and control of the electrical chip.