Optical communication parallel optical lens and optical communication device
By setting up parallel fiber optic channels within the optical lens body and optimizing aspherical parameters, the problem of low docking efficiency in traditional optical lenses is solved, enabling efficient, precise connection and stable transmission of multiple optical signals.
Patent Information
- Application Number
- CN202520097215.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Traditional optical lenses cannot effectively support the parallel docking of multiple optical fibers, resulting in complex structures, high costs, easy alignment deviations, and low docking efficiency.
The optical lens body was designed with first and second parallel fiber channels, which are respectively connected to multiple TX and RX fibers in the fiber optic connector. The bottom inner wall and mounting end face were optimized by aspherical parameters to ensure the accuracy and stability of the connection.
It simplifies the connection method of multiple optical signals, improves docking efficiency, reduces insertion loss and deviation, and ensures the quality and accuracy of optical signal transmission.
Smart Images
Figure CN223966722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical communication technology, and in particular to an optical lens and optical communication device for parallel optical communication. Background Technology
[0002] In the field of optical communication, with the continuous increase in communication speed and bandwidth requirements, parallel transmission technology of multiple optical signals has been widely used. This technology utilizes multiple optical fibers to transmit multiple signals simultaneously, significantly improving data transmission capabilities and representing an important development direction for current optical communication systems. Optical lenses, as key components connecting optical fibers and optical devices, play a crucial role in signal transmission quality. Traditional optical lens designs often cannot effectively support the parallel connection of multiple optical fibers, exhibiting technical problems such as complex structure, high cost, easy alignment deviations, and low connection efficiency. Utility Model Content
[0003] The main objective of this invention is to provide an optical lens and optical communication device for parallel optical communication, so as to at least solve the technical problem of low splicing efficiency of fiber optic lenses when performing fiber optic splicing in related technologies.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] In a first aspect, this utility model provides an optical lens for parallel optical communication, comprising an optical lens body with a slot, wherein a first parallel optical fiber channel and a second parallel optical fiber channel are formed on the bottom inner wall of the slot away from the slot opening; wherein, when the optical lens is connected to an optical fiber connector, the slot is used for insertion into the optical fiber connector, the first parallel optical fiber channel is used for docking with multiple TX optical fibers in the optical fiber connector, and the second parallel optical fiber channel is used for docking with multiple RX optical fibers in the optical fiber connector.
[0006] Based on the first aspect, a third parallel fiber channel and a fourth parallel fiber channel are provided on the mounting end face of the optical lens body near the PCB board on which the optical devices are configured. The third parallel fiber channel is connected to the first parallel fiber channel, and the fourth parallel fiber channel is connected to the second parallel fiber channel. The third parallel fiber channel is used for multiple TX fibers that enter the first parallel fiber channel to exit the optical lens body, and the fourth parallel fiber channel is used for multiple RX fibers that enter the second parallel fiber channel to exit the optical lens body.
[0007] Based on the first aspect, the first parallel optical fiber channel includes a plurality of first channels arranged in a linear manner, each of the first channels being positionally corresponding to a first optical fiber channel in the MT ferrule of the optical fiber connector, such that each TX optical fiber is inserted into a corresponding first channel through the first optical fiber channel.
[0008] Based on the first aspect, the second optical fiber parallel channel includes a plurality of second channels arranged linearly, each second channel being positionally corresponding to a second optical fiber channel within the MT ferrule of the optical fiber connector, such that each RX optical fiber is inserted into a corresponding second channel via the second optical fiber channel.
[0009] Based on the first aspect, the mounting end face is provided with a peripheral fixing structure along the direction away from the center of the optical lens body, and the peripheral fixing structure is used to fix it to the PCB board by dispensing and curing.
[0010] Based on the first aspect, the bottom inner wall is provided with a plug guide portion that protrudes in the opposite direction to the plugging direction, and the plug guide portion is adapted to the plug groove on the MT plug core.
[0011] Based on the first aspect, a positioning part is provided on the bottom inner wall, the positioning part is located between the insertion guide part and the periphery of the bottom inner wall, and the positioning part is adapted to the positioning groove on the MT ferrule.
[0012] Based on the first aspect, the surface of the bottom inner wall is aspherical, and the mounting end face is aspherical.
[0013] Based on the first aspect, when the bottom inner wall serves as an optical lens region and the mounting end face serves as a transmitting or receiving lens region, the following aspherical parameter formula is satisfied:
[0014]
[0015] Where z represents the axial distance between any point on the aspherical surface and the vertex, c represents the aspherical curvature, r represents the radial distance between points on the optical surface, k represents the aspherical coefficient, α1 represents the first coefficient of the higher-order aspherical term, and α2 represents the second coefficient of the higher-order aspherical term.
[0016] A second aspect of this invention provides an optical communication device, including a device body and an optical lens for parallel optical communication as described in the first aspect.
[0017] This invention relates to a parallel optical lens and optical communication device for optical communication. By incorporating a first parallel optical fiber channel and a second parallel optical fiber channel within the optical lens body, it enables reliable connection to multiple TX and RX fibers in an optical fiber connector, simplifying the connection method for multiple optical signals and improving connection efficiency. Furthermore, the parallel optical fiber channel design not only provides independent guidance paths for multiple fibers but also avoids the accumulated alignment error problem in traditional connection methods, thereby effectively reducing insertion loss and deviation in optical signal transmission and ensuring transmission quality. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A three-dimensional schematic diagram of an optical lens for parallel optical communication provided in an embodiment of this application, viewed from one perspective.
[0020] Figure 2 A three-dimensional schematic diagram of an optical lens for parallel optical communication provided in an embodiment of this application, viewed from one perspective.
[0021] Figure 3 This is a schematic diagram showing the first and second parallel fiber channels being connected to the TX and RX fibers, respectively, in an embodiment of this application.
[0022] Figure 4 A schematic diagram illustrating the docking of an optical lens for parallel optical communication with a fiber optic connector, as provided in an embodiment of this application.
[0023] Figure 5 This is a three-dimensional schematic diagram from one perspective when the optical lens body is hidden on the PCB board in an embodiment of this application;
[0024] Figure 6 This is a three-dimensional schematic diagram from one perspective when the optical lens body is hidden on the PCB board in an embodiment of this application;
[0025] Figure 7 for Figure 6 The diagram shows a three-dimensional schematic of the optical lens body assembled onto a PCB board.
[0026] Figure 8 A three-dimensional schematic diagram of the fiber optic connector that is plugged into the optical lens body in the embodiments of this application;
[0027] Figure 9This indicates the overall trend of change in the axial height or optical path difference of an aspherical surface.
[0028] Figure 10 This indicates optical performance characteristics (such as optical path difference or aberration correction performance) related to higher-order terms of aspherical surfaces.
[0029] Reference numerals: 1. Optical lens body; 2. Fiber optic connector; 10. Slot; 11. Bottom inner wall; 12. First parallel fiber optic channel; 13. Second parallel fiber optic channel; 21. TX fiber; 22. RX fiber; 24. First fiber optic channel; 25. Second fiber optic channel; 30. Mounting end face; 31. Third parallel fiber optic channel; 32. Fourth parallel fiber optic channel; 40. Peripheral fixing structure; 50. Insertion guide; 60. Positioning part; 70. PCB board. Detailed Implementation
[0030] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0031] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.
[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The present application provides an optical lens for parallel optical communication, which includes at least an optical lens body 1 with a slot 10. The bottom inner wall 11 of the slot 10 away from the slot opening forms a first optical fiber parallel channel 12 and a second optical fiber parallel channel 13.
[0033] Specifically, the optical lens body 1 serves as the main frame, with a slot 10 formed by opening one of its end faces. The space inside the slot 10 provides insertion space for fiber optic connectors, etc. Two parallel fiber optic channels are formed on the innermost (closest to the center of the optical lens body 1) bottom inner wall 11 of the slot 10 for precise alignment and guidance of the fiber optic path.
[0034] When connection with fiber optic connector 2 is required, the slot 10 of the optical lens body 1 is inserted into the fiber optic connector 2, the first parallel fiber optic channel 12 is connected to multiple TX fibers 21 (used for optical signal transmission) in the fiber optic connector 2, and the second parallel fiber optic channel 13 is connected to multiple RX fibers 22 (used for optical signal reception) in the fiber optic connector 2. That is, the first parallel fiber optic channel 12 and the second parallel fiber optic channel 13 are connected to the transmitting and receiving fibers in the optical communication module, thereby achieving efficient integration of multi-fiber parallel transmission.
[0035] The optical lens for parallel optical communication in this embodiment can reliably connect with multiple TX and RX fibers in the optical fiber connector through the first parallel optical fiber channel 12 and the second parallel optical fiber channel 13, respectively. This simplifies the connection method for multiple optical signals and improves the connection efficiency. In addition, the parallel optical fiber channel design not only provides independent guidance paths for multiple optical fibers, but also avoids the problem of accumulated alignment errors in traditional connection methods, thereby effectively reducing insertion loss and deviation in optical signal transmission and ensuring transmission quality.
[0036] Please see Figure 5 , Figure 6 , Figure 7 and Figure 8 On the optical lens body 1, near the mounting end face 30 of the PCB board 70 where optical devices are configured, there are a third optical fiber parallel channel 31 and a fourth optical fiber parallel channel 32. The third optical fiber parallel channel 31 is connected to the first optical fiber parallel channel 12, and the fourth optical fiber passes through the parallel channel 32 and is connected to the second optical fiber parallel channel 13.
[0037] Specifically, the third parallel fiber channel 31 and the fourth parallel fiber channel 32 serve as the lead-out or exit paths for the TX fiber 21 and the RX fiber 22. That is, the third parallel fiber channel 31 is used for multiple TX fibers 21 that enter the first parallel fiber channel 12 and exit from the optical lens body 1, and the fourth parallel fiber channel 32 is used for multiple RX fibers 22 that enter the second parallel fiber channel 13 and exit from the optical lens body 1.
[0038] In the optical lens for parallel optical communication, four parallel fiber channels form complete input and output paths for the TX fiber 21 and RX fiber 22, achieving efficient transmission and precise coupling of optical signals. Furthermore, the arrangement of the four parallel fiber channels ensures the separation and independence of the optical signal paths, reducing the possibility of signal crosstalk and improving the coupling efficiency and transmission quality of the optical signals.
[0039] In an optional embodiment of this application, the first parallel fiber channel 12 includes a plurality of linearly arranged first channels. Each first channel corresponds to a first fiber channel 24 within the MT ferrule of the fiber optic connector, allowing each TX fiber 21 to be inserted into its corresponding first channel via the first fiber channel 24. Specifically, by ensuring that each TX fiber 21 can be directly inserted into and positioned into its corresponding first channel via the first fiber channel 24 of the MT ferrule, an efficient and precise fiber optic transmission path is achieved. Simultaneously, by dividing the first parallel fiber channel 12 into a plurality of linearly arranged first channels, the path interference problem during simultaneous transmission of multiple fibers is solved, enhancing the alignment accuracy of the optical signal. Each TX fiber 21 is initially physically positioned by the first fiber channel 24 upon insertion, improving the guiding accuracy of the first channel when transmitting optical signals.
[0040] In an optional embodiment of this application, the second parallel fiber channel 13 includes a plurality of second channels arranged linearly. Each second channel corresponds to a second fiber channel 25 within the MT ferrule of the fiber optic connector, such that each RX fiber 22 is inserted into its corresponding second channel via the second fiber channel 25. Similarly, this structure achieves efficient management of the RX fibers 22 through the linear arrangement of the plurality of second channels. When the RX fiber 22 is inserted, it is initially positioned by the second fiber channel 25 of the MT ferrule, and then further calibrated and guided by the second channel. Each RX fiber thus maintains a high degree of accuracy in its spatial position, ensuring the coupling efficiency and transmission stability of the optical signal, and improving the guiding accuracy of the second channel when receiving optical signals.
[0041] In an optional embodiment of this application, the mounting end face 30 is provided with a peripheral fixing structure 40 that is approximately parallel to the mounting end face along a direction away from the center of the optical lens body. This peripheral fixing structure 40 is used to fix the optical lens body to the PCB board 70 by dispensing and curing. Specifically, by arranging the parallel peripheral fixing structure 40 around the mounting end face 30, sufficient contact area can be provided for the dispensing process, thereby improving the fixing effect and vibration resistance. This not only ensures a stable connection between the optical lens body and the PCB board 70, but also has the advantages of easy operation and adaptability to complex assembly environments. In addition, the design of the peripheral fixing structure 40 ensures that the optical lens body maintains a precise installation position during use, avoiding displacement or loosening caused by vibration or external force, and ensuring the alignment accuracy of the fiber optic channel and optical devices. The optimization of the overall structure makes it suitable for optical communication devices with high precision requirements and can meet the needs of diverse application scenarios.
[0042] In an optional embodiment of this application, an insertion guide 50 is provided on the bottom inner wall 11, protruding in the direction opposite to the insertion direction. The insertion guide 50 is adapted in shape and size to the insertion groove 23 on the MT ferrule, providing reliable guidance during insertion. Specifically, the design of the insertion guide 50 significantly enhances the mating accuracy between the optical lens body and the MT ferrule. During insertion, the insertion guide 50 can effectively guide the MT ferrule into the predetermined position in the correct direction, thereby avoiding mating failure due to insertion offset or error.
[0043] In an optional embodiment of this application, a positioning part 60 is provided on the bottom inner wall 11. The positioning part 60 is located between the insertion guide part 50 and the periphery of the bottom inner wall 11. The positioning part 60 is adapted in shape and size to the positioning groove on the MT ferrule to provide reliable guidance and positioning functions during the insertion process. Specifically, by providing the positioning part 60, it can mechanically position the MT ferrule during the insertion of the optical lens body, ensuring accurate alignment between the ferrule and the optical fiber channel, and avoiding docking failure or signal loss due to positional misalignment. In addition, the positioning part 60 works in conjunction with the insertion guide part 50 to further improve the stability of the insertion process. At the same time, the reasonable arrangement reduces the structural complexity of the bottom inner wall, making the overall assembly process simpler and more efficient.
[0044] In an optional embodiment of this application, the surface of the bottom inner wall is aspherical, and the mounting end face is aspherical. Furthermore, when the bottom inner wall 11 serves as an optical lens area and the mounting end face 30 serves as a transmitting or receiving lens area, the following aspherical parameter formula is satisfied:
[0045]
[0046] Where z represents the axial distance between any point on the aspherical surface and the vertex, c represents the curvature of the aspherical surface, r represents the radial distance between points on the optical surface, k represents the aspherical coefficient, α1 represents the first coefficient of the higher-order aspherical term, and α2 represents the second coefficient of the higher-order aspherical term.
[0047] When the bottom inner wall serves as the optical lens area, the corresponding radius of curvature is 0.241545894, the aspherical coefficient is 0.3604, and the higher-order aspherical term is -21.55. When the mounting end face serves as the transmitting or receiving lens area, the corresponding radius of curvature is -0.163773338, the aspherical coefficient is -3.16, and the higher-order aspherical term is -6.964.
[0048] Please see Figure 9 and Figure 10When the bottom inner wall 11 and the mounting end face 30 are aspherical and the above-mentioned optical parameters are selected, they have better optical performance, thereby supporting the application of the lens in optical communication systems.
[0049] Specifically, when the bottom inner wall serves as the optical lens area, it guides and couples the fiber optic signal, reducing diffraction loss during coupling. When the mounting end face serves as the transmitting or receiving lens area, aspherical optimization effectively compensates for focusing inaccuracies caused by aberrations in traditional spherical lenses, improving the signal quality and resolution of the optical system. In other words, optimizing the design of the bottom inner wall and mounting end face using aspherical parameter formulas not only significantly improves the transmission efficiency and accuracy of the optical signal but also enables the optical lens itself to exhibit efficient, stable, and reliable optical performance in the optical communication system.
[0050] This embodiment also provides a transformer structure, including a magnetic core and an optical lens for parallel optical communication provided in any of the above embodiments, wherein the magnetic core is installed inside the optical lens for parallel optical communication.
[0051] This invention relates to a parallel optical lens and optical communication device for optical communication. By incorporating a first parallel optical fiber channel and a second parallel optical fiber channel within the optical lens body, it enables reliable connection to multiple TX and RX fibers in an optical fiber connector, simplifying the connection method for multiple optical signals and improving connection efficiency. Furthermore, the parallel optical fiber channel design not only provides independent guidance paths for multiple fibers but also avoids the accumulated alignment error problem in traditional connection methods, thereby effectively reducing insertion loss and deviation in optical signal transmission and ensuring transmission quality.
[0052] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.
Claims
1. An optical lens for parallel optical communication, characterized in that, It includes an optical lens body with a slot, wherein a first parallel optical fiber channel and a second parallel optical fiber channel are formed on the bottom inner wall of the slot away from the slot opening. When the optical lens body is connected to the fiber optic connector, the slot is used to insert into the fiber optic connector, the first parallel fiber optic channel is used to mate with multiple TX fibers in the fiber optic connector, and the second parallel fiber optic channel is used to mate with multiple RX fibers in the fiber optic connector.
2. The optical lens for parallel optical communication as described in claim 1, characterized in that, The optical lens body has a third parallel optical fiber channel and a fourth parallel optical fiber channel on the mounting end face near the PCB board on which the optical devices are configured. The third parallel optical fiber channel is connected to the first parallel optical fiber channel, and the fourth optical fiber passes through the parallel channel and is connected to the second parallel optical fiber channel. The third parallel fiber channel is used for multiple TX fibers that enter the first parallel fiber channel and exit from the optical lens body, and the fourth parallel fiber channel is used for multiple RX fibers that enter the second parallel fiber channel and exit from the optical lens body.
3. The optical lens for parallel optical communication according to claim 2, characterized in that, The first parallel optical fiber channel includes a plurality of first channels arranged in a linear manner. Each first channel corresponds to a first optical fiber channel in the MT ferrule of the optical fiber connector, such that each TX optical fiber is inserted into a corresponding first channel through the first optical fiber channel.
4. The optical lens for parallel optical communication according to claim 3, characterized in that, The second parallel fiber channel includes a plurality of second channels arranged in a linear manner, each second channel being positioned in relation to a corresponding second fiber channel within the MT ferrule of the fiber connector, such that each RX fiber is inserted into a corresponding second channel via the second fiber channel.
5. The optical lens for parallel optical communication according to claim 2, characterized in that, The mounting end face is provided with a peripheral fixing structure along the direction away from the center of the optical lens body. The peripheral fixing structure is used to fix it to the PCB board by dispensing and curing.
6. The optical lens for parallel optical communication according to claim 4, characterized in that, The bottom inner wall is provided with a plug guide portion that protrudes in the opposite direction to the plugging direction, and the plug guide portion is adapted to the plug groove on the MT plug.
7. The optical lens for parallel optical communication according to claim 6, characterized in that, A positioning part is provided on the bottom inner wall. The positioning part is located between the insertion guide part and the periphery of the bottom inner wall. The positioning part is adapted to the positioning groove on the MT ferrule.
8. The optical lens for parallel optical communication according to claim 2, characterized in that, The surface of the bottom inner wall is aspherical, and the mounting end face is aspherical.
9. The optical lens for parallel optical communication according to claim 8, characterized in that, When the bottom inner wall serves as the fiber optic lens area and the mounting end face serves as the transmitting or receiving lens area, the following aspherical parameter formula is satisfied: Where z represents the axial distance from any point on the aspherical surface to the vertex, c represents the aspherical curvature, r represents the radial distance from any point on the optical surface, and k represents the aspherical coefficient. Denotes the first coefficient of the higher-order aspherical term. This represents the second coefficient of the higher-order aspheric term; When the bottom inner wall serves as the fiber optic lens area, the corresponding radius of curvature is 0.241545894, the aspheric coefficient is 0.3604, and the higher-order aspheric term is -21.
55. When the mounting end face serves as the transmitting or receiving lens area, the corresponding radius of curvature is -0.163773338, the aspheric coefficient is -3.16, and the higher-order aspheric term is -6.
964.
10. An optical communication device, characterized in that, It includes a device body and an optical lens for parallel optical communication as described in any one of claims 1 to 9, wherein the optical lens is mounted on the device body.