An air-tight parallel optical module
By combining hermetic packaging and adjustable bracket design, the optical path reliability problem of optical modules in harsh environments is solved, and the stability of optical modules under vibration and temperature changes and the lifespan of components are extended, making it suitable for special applications in the field of optical communication.
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
Existing optical modules cannot meet the needs of harsh communication environments, especially under conditions such as vibration, shock and temperature changes, and cannot guarantee the reliability of the optical path and the lifespan of components.
An hermetically sealed parallel optical module was designed. It adopts a hermetically sealed packaging structure to protect the internal components and ensures the parallelism of the optical path through an adjustable bracket combination. It includes the fixed connection of the shell assembly, the folding lens assembly and the optical window. The control and optical chip are fixed using ceramic substrates and metal substrates. The lens bracket and the adjustment bracket work together to adjust the angle of the lens body.
It improves the reliability of optical modules and the lifespan of components in harsh environments, ensures parallel horizontal light output in the optical path, enhances the reliability and heat dissipation performance of the optical path, and is suitable for small-space applications.
Smart Images
Figure CN224581729U_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 special fields or special environments are also constantly being developed, such as optical modules that can meet the requirements of operating conditions such as vibration, impact or temperature changes during use.
[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 substrate; the interior of the housing assembly forms a sealed mounting space; each of the sidewalls is provided with a light window; the substrate is used to provide mounting positions for components. A folding lens assembly is fixedly connected to the substrate; the folding lens assembly includes a support assembly and a lens body; the support assembly forms a limiting space for fixing the lens body; The light window is fixed to the side wall by a light window bracket; the light window bracket is welded to the side wall.
[0007] In some embodiments of this utility model, 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 a mounting part on the side near the installation space; the mounting part is used to fix the light window.
[0008] 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.
[0009] 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.
[0010] In some embodiments of this utility model, the bracket assembly is a three-dimensional adjustable structure, the bracket assembly includes a lens bracket and an adjustment bracket; both the lens bracket and the adjustment bracket are U-shaped structures, the opening direction of the U-shaped structures is perpendicular to the direction of the cover plate and the opening directions of the two U-shaped structures are opposite; the outer side wall of the lens bracket and the inner side wall of the adjustment bracket are fitted with a clearance.
[0011] In some embodiments of this utility model, the lens body includes an incident and exit surface, a reflecting surface, and an exit and incident surface; wherein, the incident and exit surface is disposed opposite to the inner wall of the adjusting bracket, and the exit and incident surface is disposed opposite to the light window; the top surface of the lens, which is parallel to the incident and exit surface, is fixed to the inner wall of the lens bracket through a metallized surface.
[0012] In some embodiments of this utility model, the incident and exit surfaces are further provided with a collimating microlens array, which is correspondingly arranged with the optical chip; the light signal emitted by the optical chip is collimated by the collimating microlens array and reaches the reflecting surface, and the reflecting surface folds the light path by 90°, and the light path is emitted from the light window parallel to the substrate.
[0013] In some embodiments of this invention, the adjustment range of the bracket assembly in the direction parallel to the substrate is greater than the adjustment range in other directions.
[0014] 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.
[0015] In some embodiments of this utility model, the reflection angle of the reflective surface of the lens body is 45°, and the light signal undergoes total internal reflection after reaching the reflective surface.
[0016] 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 adjustable bracket assembly allows for adjustment of the lens body, ensuring parallel horizontal light output in the optical path and improving the reliability of the optical path. Attached Figure Description
[0017] 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.
[0018] 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 .
[0019] 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 .
[0020] Figure 3 This is a schematic diagram of the optical module structure without the cover plate shown in the embodiment of this utility model.
[0021] Figure 4 This is a schematic diagram of the optical path of a hermetically sealed parallel optical module as shown in an embodiment of the present invention.
[0022] Figure 5 This is a schematic diagram of the structure of the folding lens assembly shown in the embodiment of this utility model. Figure 1 .
[0023] Figure 6 This is a schematic diagram of the structure of the folding lens assembly shown in the embodiment of this utility model. Figure 2 .
[0024] Figure 7 This is a schematic diagram of the structure of the tube shell assembly shown in an embodiment of the present invention.
[0025] Figure 8 This is a schematic diagram of the structure of the light window bracket shown in an embodiment of the present invention.
[0026] 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. Electrical chip; 230. Optical chip; 300. Folding lens assembly; 310. Lens body; 320. Lens support; 321. First support plate; 322. First connecting plate; 330. Adjustment bracket; 331. Second support plate; 332. Second connecting plate. Detailed Implementation
[0027] 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.
[0028] 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.
[0029] 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.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] Reference Figures 1-3 As shown, a hermetically sealed parallel optical module includes: The housing assembly 100 includes a cover plate 110, sidewalls 120, and a substrate 130; the interior of the housing assembly 100 forms a sealed mounting space; each of the sidewalls 120 is provided with a light window 150; the substrate 130 is used to provide mounting positions for components. A folding lens assembly 300 is fixedly connected to the substrate 130; the folding lens assembly 300 includes a support assembly and a lens body 310; the support assembly forms a limiting space for fixing the lens body 310. 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.
[0034] 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 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.
[0035] In some embodiments of the present invention, the housing assembly 100 is a hermetically sealed metal structure, wherein the sidewall 120 and the substrate 130 form a groove structure, the opening of the groove structure faces the cover plate 110, and the cover plate 110 covers the opening of the groove and is integrally connected with the sidewall 120.
[0036] 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.
[0037] 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.
[0038] In some embodiments of the present invention, reference is made to... Figure 3 and Figure 7 As 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 230 and the electrical chip 220; the electrical chip 220 is used to drive or amplify the signal of the optical chip 230, and the optical chip 230 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 220.
[0039] 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.
[0040] 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 assembly 300 and the optical chip 230; see reference. Figure 3 As shown, other components are also connected to the upper surface of the ceramic substrate 131 by gold wire bonding.
[0041] In some embodiments, reference is made to Figure 2 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.
[0042] In some embodiments of the present invention, for the folding lens assembly 300, refer to Figures 3-6 As shown, it is located near the light window 150 in the installation space; refer to Figure 4As shown, during the use of the optical module, the optical signal emitted by the optical chip 230 is perpendicularly incident on the folding lens assembly 300. After the folding lens assembly 300 folds the optical path by 90°, the optical path exits parallel through the optical window 150 and enters the fiber optic socket. Since the optical path is reversible, when the optical signal in the optical fiber enters the folding lens assembly 300 parallel through the optical window 150, the folding lens assembly 300 folds the optical path by 90°, and the optical path then enters the optical chip 230 perpendicularly.
[0043] Continue to refer to Figure 5 and Figure 6 As shown, the bracket assembly includes a lens bracket 320 and an adjustment bracket 330; both the lens bracket 320 and the adjustment bracket 330 are U-shaped structures, and the opening directions of the U-shaped structures are perpendicular to the direction of the cover plate 110 and the opening directions of the two U-shaped structures are opposite; the outer side wall 120 of the lens bracket 320 and the inner side wall 120 of the adjustment bracket 330 are clearance-fitted.
[0044] Specifically, the lens holder 320 and the adjustment holder 330 have the same structure. The size of the adjustment holder 330 is larger than that of the lens. The opening of the lens holder 320 faces downward, while the opening of the adjustment holder 330 faces upward. The lens holder 320 is inserted downward into the two arms of the adjustment holder 330.
[0045] In some embodiments of the present invention, the lens body 310 includes an incident and exit surface, a reflecting surface, and an exit and incident surface; wherein the incident and exit surface is disposed opposite to the inner wall of the adjusting bracket 330, and the exit and incident surface is disposed opposite to the light window 150; the top surface of the lens, which is parallel to the incident and exit surface, is fixed to the inner wall of the lens bracket 320 through a metallized surface.
[0046] Specifically, the lens holder 320 includes symmetrically arranged first support plates 321 and a first connecting plate 322 for connecting the two first support plates 321; the adjustment bracket 330 includes symmetrically arranged second support plates 331 and a second connecting plate 332 for connecting the two second support plates 331; wherein, with Figure 5 For example, the top surface of the lens body 310 is a metallized surface that is welded and fixed to the first connecting plate 322. Since both the first support plate 321 and the second support plate 331 have a certain height, the depth of the first support plate 321 inserted into the second support plate 331 can be adjusted according to the needs of the optical path, thereby determining the distance between the incident and exit surfaces of the lens body 310 and the second connecting plate 332.
[0047] In other words, since the adjustment bracket 330 is connected and fixed to the metal substrate 132, once the distance between the incident and exit surfaces of the lens body 310 and the second connecting plate 332 is determined, the distance between the incident and exit surfaces of the lens body 310 and the optical chip 230 is also determined.
[0048] In some embodiments of the present invention, the incident and exit surfaces are further provided with a collimating microlens array, which is correspondingly arranged with the optical chip 230; the light signal emitted by the optical chip 230 is collimated by the collimating microlens array and reaches the reflecting surface, and the reflecting surface folds the light path by 90°, and the light path is emitted from the light window 150 parallel to the substrate 130.
[0049] In some embodiments of the present invention, the reflection angle of the reflective surface of the lens body 310 is 45°, and the light signal undergoes total internal reflection after reaching the reflective surface.
[0050] In some embodiments of the present invention, the bracket assembly has a greater adjustment range in the direction parallel to the substrate 130 than in other directions.
[0051] For example, refer to Figure 5 As shown, the length, width, and height directions of the adjusting bracket 330 are designated as the x, y, and z directions, respectively. The bracket assembly can achieve translation along the x, y, and z directions, and can also rotate around the z direction.
[0052] Regarding the relative adjustment between the lens bracket 320 and the adjustment bracket 330, they can translate a large distance in the y and z directions. However, due to the mutual limiting of the first support plate 321 and the second support plate 331, the translation distance in the x direction is small, and the rotation angles in the x, y, and z directions are also relatively small.
[0053] In some embodiments of the present invention, during the use of the optical module, the light emission and incident angles of the lens body 310 can be kept parallel to both sides and the bottom of the housing by controlling the mounting precision of the optical chip 230. By setting the folding lens assembly 300, a flat design of the optical module is achieved, reducing the overall size of the optical module.
[0054] In some embodiments of the present invention, reference is made to... Figure 7 and Figure 8 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.
[0055] In some embodiments of the present invention, 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 mates 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.
[0056] Specifically, refer to Figure 8As 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.
[0057] In some embodiments of the present invention, a limiting part 143 is disposed between the plug-in part 141 and the fiber optic socket; 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 to the fiber optic socket.
[0058] In some embodiments of the present invention, the thickness of the plug portion 141 is not less than the thickness of the side wall 120. In order to avoid the plug portion 141 protruding a certain structure relative to the inner surface of the side wall 120 due to the thickness of the plug 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.
[0059] In some embodiments of the present invention, 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.
[0060] In some embodiments of the present invention, 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 using a mold with a corresponding structure.
[0061] In some embodiments of the present invention, the optical window 150 may be made of optical waveguide materials such as ceramic or glass.
[0062] 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 adjustable bracket assembly allows for adjustment of the lens body, ensuring parallel horizontal light output in the optical path and improving the reliability of the optical path.
[0063] 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.
[0064] 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 by, include: A housing assembly includes a cover plate, sidewalls, and a base plate; the interior of the housing assembly forms a sealed installation space; any of the sidewalls is provided with a light window; The substrate is used to provide mounting positions for components; A folding lens assembly is fixedly connected to the substrate; the folding lens assembly includes a support assembly and a lens body; the support assembly forms a limiting space for fixing the lens body; The light window is fixed to the side wall by a light window bracket; the light window bracket is welded to the side wall.
2. The hermetically sealed parallel optical module according to claim 1, wherein 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 a mounting part on the side near the installation space; the mounting part is used to fix the light window.
3. The hermetically sealed parallel optical module of claim 1, wherein, 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.
4. The hermetically sealed parallel optical module of claim 1, wherein, 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.
5. The hermetically sealed parallel optical module of claim 1, wherein, The bracket assembly is a three-dimensional adjustable structure, comprising a lens bracket and an adjustment bracket; both the lens bracket and the adjustment bracket are U-shaped structures, the opening directions of the U-shaped structures are perpendicular to the direction of the cover plate and the opening directions of the two U-shaped structures are opposite; the outer side wall of the lens bracket and the inner side wall of the adjustment bracket are fitted with a clearance.
6. The hermetically sealed parallel optical module of claim 5, wherein, The lens body includes an incident and exit surface, a reflecting surface, and an exit and incident surface; wherein, the incident and exit surface is disposed opposite to the inner wall of the adjustment bracket, and the exit and incident surface is disposed opposite to the light window; the top surface of the lens, which is parallel to the incident and exit surface, is fixed to the inner wall of the lens bracket through a metallized surface.
7. The hermetically sealed parallel optical module of claim 6, wherein, The incident and exit surfaces are also provided with a collimating microlens array, which is arranged corresponding to the optical chip. The light signal emitted by the optical chip is collimated by the collimating microlens array and reaches the reflecting surface. The reflecting surface folds the light path by 90°, and the light path is emitted from the light window parallel to the substrate.
8. The hermetically sealed parallel optical module of claim 1, wherein, The bracket assembly has a greater adjustment range in the direction parallel to the substrate than in other directions.
9. The hermetically sealed parallel optical module of claim 1, wherein, The substrate has several pins at its bottom; the pins are LGA pins, BGA pins or butterfly pins.
10. The hermetically sealed parallel optical module of claim 1, wherein, The reflection angle of the reflective surface of the lens body is 45°, and the light signal undergoes total internal reflection after reaching the reflective surface.