Signal transmission structure for optical fiber

Abstract

The utility model relates to the technical field of lenses, in particular to a signal transmission structure for optical fibers, which comprises a support, a first lens and a second lens, the support is provided with two mounting holes, and the first lens and the second lens are respectively assembled in the two mounting holes; the first lens and the second lens are arranged on the support to form a double-communication-channel structure, and after the double-communication-channel structure is assembled on the optical module, the first lens is used as a main channel for communication, for example, optical fiber communication signals are transmitted, and the second lens is used as a secondary channel, can be used for receiving optical fiber communication signals and serves as two physical channels in the same optical fiber structure. The signal transmission speed can be improved; in addition, the two communication channels can be fixed only through one support, and therefore production steps and assembly steps can be reduced in the production process and the assembly process.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, in particular to a signal transmission structure for optical fibers. Background Art

[0002] In the fiber-optic communication system, the optical module, as a core component, undertakes the key task of converting electrical signals into optical signals (transmission) and converting optical signals back to electrical signals (reception). In order to achieve this function, traditional optical module designs usually use independent optical paths to process the transmission and reception signals, which means that a lens is used for each transmission and reception optical path. Specifically, the transmission lens is responsible for focusing the light beam emitted by the light source and coupling it into the optical fiber, while the receiving lens is responsible for collecting the light beam transmitted from the optical fiber and directing it to the photodetector.

[0003] In this design, the transmitting lens and the receiving lens are fixed on their respective brackets, forming two independent optical structures. Although such a configuration can ensure the accurate transmission and reception of optical signals, it brings significant inconvenience in actual operation, especially in the assembly and maintenance stages of the module. Since the lens and the bracket need to be precisely aligned, any slight deviation may lead to increased loss of optical signals and even signal distortion, seriously affecting the communication quality. Therefore, every time the assembly or disassembly is performed, the technicians must spend a lot of time and energy to make fine adjustments to ensure the correct position and alignment of the optical components, which undoubtedly increases the production cost and maintenance difficulty.

[0004] In addition, with the growing demand for data communications, optical modules are moving towards smaller, higher-density integration. The space occupied and alignment complexity of traditional separate lens structures have become important factors restricting technological progress. In a limited space, how to simplify the structure of optical modules, reduce assembly steps, and ensure the quality and stability of signal transmission has become an urgent problem to be solved. Summary of the invention

[0005] The utility model provides a signal transmission structure for optical fiber in view of the problems of the prior art. A first lens and a second lens are arranged on a bracket at the same time, so that the assembly structure with the optical module is simpler, the production process is also simpler, and the structural stability is better.

[0006] In order to solve the above technical problems, the utility model discloses the following technical solutions: a signal transmission structure for optical fiber, comprising a bracket, a first lens and a second lens, wherein the bracket has two mounting holes, and the first lens and the second lens are respectively assembled in the two mounting holes.

[0007] Preferably, the two mounting holes are symmetrically arranged with the axial direction of the bracket as the symmetry axis.

[0008] Preferably, a convex strip is provided on one side of the bracket, and the convex strip is used for assembly with an external structure.

[0009] Preferably, the bracket is provided with an installation cavity, and the optical fiber signal passes through the installation cavity and then is emitted through the first lens, and the second lens is used to receive the optical fiber signal.

[0010] Beneficial effects of the utility model:

[0011] The utility model provides a signal transmission structure for optical fiber. A first lens and a second lens are both mounted on a bracket to form a dual communication channel structure. After being assembled on an optical module, the first lens is used as a main communication channel, such as transmitting an optical fiber communication signal, and the second lens is used as a secondary channel to receive an optical fiber communication signal. As two physical channels in the same optical fiber structure, the signal transmission speed can be improved. In addition, only one bracket is needed to fix the two communication channels. Therefore, both the production steps and the assembly steps can be reduced in the production process and the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 3 It is a structural schematic diagram of the upper mold and the lower mold of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the magnetic attraction device of the utility model.

[0016] exist Figures 1 to 4 Reference numerals in the drawings include:

[0017] 1- bracket, 2- first lens, 3- second lens, 4- mounting hole, 5- convex strip, 6- mounting cavity, 7- upper mold, 8- lower mold, 9- mounting ring, 10- inclined surface, 11- magnetic seat, 12- moving magnetic strip, 13- fixed magnetic core, 14- magnetic channel, 15- magnetic block, 16- guide slope, 17- limit table. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0019] Embodiment 1:

[0020] This embodiment provides a signal transmission structure for optical fiber, such as Figures 1 to 4 , including a bracket 1, a first lens 2 and a second lens 3. The bracket 1 is provided with two mounting holes 4, and the first lens 2 and the second lens 3 are respectively assembled in the two mounting holes 4.

[0021] Specifically, Figure 1 As shown, the first lens 2 and the second lens 3 are installed on the bracket 1 at the same time, and the two mounting holes 4 are symmetrically arranged with the axial direction of the bracket 1 as the symmetry axis, so the first lens 2 and the second lens 3 are also symmetrically arranged, which is convenient for production and assembly. The bracket 1 is used to be installed on the side of the optical module and is provided with a convex strip 5. When assembled to the optical module, the convex strip 5 can be assembled with the corresponding slot on the optical module to achieve installation positioning and limiting. Furthermore, the bracket 1 is provided with an installation cavity 6. The optical fiber signal passes through the installation cavity 6 and is then emitted through the first lens. The second lens 3 is used to receive the optical fiber signal. Figure 2 As shown, the mounting cavity 6 is located on a side close to the convex strip 5, so that the optical signal emitted by the optical device passes through the mounting cavity 6 and then emitted by the first lens 2, and the second lens 3 can be used to receive external optical signals.

[0022] Wherein, both ends of the mounting hole are provided with guide slopes 16, such as Figure 2 As shown, the setting of the guiding inclined surface 16 facilitates the upper mold 7 and the lower mold 8 to be accurately inserted into the mounting hole to perform the molding work of the lens.

[0023] Furthermore, a limit platform 17 is formed between the mounting cavity and the mounting hole, and the limit platform 17 is used to be clamped to the lower mold 8. Figure 2 and Figure 4 As shown, the bracket 1 is placed on the lower mold 8, and the bracket 1 can be positioned by the limiting effect between the limit platform 17 and the lower mold 8 to prevent the bracket 1 from moving downward during the molding process.

[0024] Furthermore, the bottom of the bracket 1 of this embodiment is configured as an inclined surface 10, such as Figure 2 As shown, when the bracket 1 is mounted on the optical module and welded, the bottom of the bracket 1, which is tilted, can have a larger welding area than the flat surface, ensuring that the assembly of the bracket 1 and the optical module is more stable. In addition, the convex strip 5 provided on the bracket 1 is provided at a position close to the mounting cavity 6 at the bottom of the bracket 1, thereby avoiding affecting the welding between the bracket 1 and the optical module, and at the same time preventing the solder from entering the mounting cavity 6.

[0025] In this embodiment, two paths for sending optical communication signals and receiving optical fibers are arranged on the same bracket 1, which is convenient for production and molding work, and also convenient for the subsequent assembly of optical module products. Workers do not need to assemble twice, and the positions of the first lens 2 and the second lens 3 are fixed. The assembly can avoid the problem of position distance deviation between the two lenses, thereby ensuring the accuracy of installation.

[0026] Furthermore, the two lenses serve as two physical communication channels for optical fiber communication. The two new physical communication channels can be optionally used as a signal sending channel and a signal receiving channel, or as a main channel and a secondary channel for signal sending. The main channel is used to send the main signal, and the secondary channel is used to transmit the backup signal. Furthermore, the use of two communication channels can increase the data transmission speed compared to a single channel, and the two communication channels can also perform separate transmission and backup transmission of data. Therefore, compared to single-channel communication, the reliability of data transmission will be higher. Therefore, the dual-channel lens structure of this embodiment can be used in security monitoring systems, intelligent transportation systems, data center systems, aerospace technology, etc., and has a wide range of uses.

[0027] During production of this embodiment, a mold is first set up, including an upper mold 7 and a lower mold 8, and the upper mold 7 and the lower mold 8 are provided with corresponding mold cavities; Figure 1 As shown, the dual-channel lens structure has two lens structures. During production, two upper molds 7 and two lower molds 8 are respectively provided, so that the first lens 2 and the second lens 3 can be formed at the same time;

[0028] The bracket 1 is fixed between the upper mold 7 and the lower mold 8; before molding, the bracket 1 is first fixed to the mold so that the lower mold 8 of the lower mold 8 is located in the mounting hole 4 of the bracket 1, and the upper mold 7 is also arranged corresponding to the position of the mounting hole 4, so that the first lens 2 and the second lens 3 can be fixed to the bracket 1 while molding;

[0029] The lens ball to be formed is placed in the corresponding lower mold 8 and located in the mounting hole 4 of the bracket 1; the upper mold 7 and the lower mold 8 are controlled to close the mold, and the lens ball is molded by the upper mold 7 and the lower mold 8 to form a target lens structure, and the molded lens is fixed in the mounting hole 4 of the bracket 1; Figure 3 and Figure 4 As shown, the lens ball is placed in the cavity of the lower mold 8, and then the upper mold 7 is pressed downward by high-temperature molding to form the lens on the bracket 1, thereby completing the production of the dual-channel lens structure. Compared with first molding the lens and then installing the lens on the bracket 1, in the production method of this embodiment, during the molding process, the lens and the lens bracket 1 can be molded simultaneously or reserved with a precise installation position, which reduces the subsequent separate assembly process, avoids errors in the assembly process, ensures the precise match between the lens and the bracket 1, and improves the consistency and reliability of the finished product. At the same time, the modular design reduces the need for multiple special molds, reduces the initial investment and maintenance costs of the molds, and at the same time, the simplified assembly process also reduces manpower and material waste, further reducing the overall production cost.

[0030] Further, such as Figure 4As shown, in this embodiment, in order to prevent the bracket 1 from shifting when the first lens 2 and the second lens 3 are molded, or the bracket 1 is taken out when the upper mold 7 is raised or lowered, a magnetic device is installed on the lower mold 8 seat of the lower mold 8 in this embodiment. The magnetic device is provided with at least two groups, which are symmetrically arranged with the bracket 1 as the center; the magnetic device includes a magnetic seat 11, a movable magnetic strip 12 and a fixed magnetic core 13. The magnetic seat 11 is provided with a magnetic channel 14. The movable magnetic strip 12 can be movably assembled in the magnetic device. The fixed magnetic core 13 is assembled in the magnetic channel 14, and a wire is wound around the outer periphery of the fixed magnetic core 13. The wire is energized with an external power supply structure. In this embodiment, as long as the height of the magnetic seat 11 does not affect the lifting and lowering molding work of the upper mold 7, the wire of the fixed magnetic core 13 can be connected to the external power supply structure, and then the fixed magnetic core 13 can be switched between magnetic and non-magnetic by electromagnetism. The bracket 1 is equipped with a magnetic block 15, as shown Figure 4 As shown, the actual working principle is: after the bracket 1 is placed at the corresponding position of the mold, the moving magnetic strip 12 is attracted to the magnetic block 15 of the bracket 1, that is, the moving magnetic strip 12 moves to the position as shown in FIG. Figure 4 The position shown in the figure limits the upward movement of the mounting ring 9 at the bottom of the bracket 1. Therefore, even if the upper mold 7 rises, the bracket 1 will not be driven by the upper mold 7 to move under the limiting effect of the moving magnetic strip 12, which can ensure that the bracket 1 is stable in position during the molding process and prevent the inaccurate lens molding. After the molding is completed, the upper mold 7 rises to the corresponding height, and the external power supply structure supplies power to the wire of the fixed magnetic core 13. At this time, the fixed magnetic core 13 generates magnetic force. The magnetic force generated by the fixed magnetic core 13 is controlled by controlling the magnitude of the current. As long as the magnetic force is greater than the magnetic force of the magnetic block 15 on the moving magnetic strip 12, the moving magnetic strip 12 can be attracted back to the magnetic suction channel 14, and the bracket 1 is no longer limited. The staff can remove the bracket 1 with the first lens 2 and the second lens 3 after the lens is formed. The setting of the magnetic suction device can improve the assembly stability of the bracket 1 during the molding process, and prevent the movement or shaking of the bracket 1 during the molding process, which may cause errors in lens molding and fixing, and help improve production quality.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A signal transmission structure for optical fiber, characterized in that: It comprises a bracket, a first lens and a second lens. The bracket is provided with two mounting holes. The first lens and the second lens are respectively mounted in the two mounting holes. The two mounting holes are symmetrically arranged with the axial direction of the bracket as the symmetry axis. Both ends of the mounting holes are provided with guiding inclined surfaces.

2. The signal transmission structure for optical fiber according to claim 1, characterized in that: A convex strip is arranged on one side of the bracket, and the convex strip is used for assembling with an external structure.

3. The signal transmission structure for optical fiber according to claim 1, characterized in that: The bracket is provided with an installation cavity, and the optical fiber signal passes through the installation cavity and then is emitted through the first lens, and the second lens is used to receive the optical fiber signal.

4. The signal transmission structure for optical fiber according to claim 3, characterized in that: A limiting platform is formed between the mounting cavity and the mounting hole, and the limiting platform is used for clamping on the lower mold.

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