Jig for optical fiber collimation and focusing

Abstract

The invention belongs to the technical field of optical fiber communication, and particularly relates to a jig for optical fiber collimation focusing, which comprises a shockproof platform, a first clamping mechanism and a second clamping mechanism, and is characterized in that the first clamping mechanism comprises a first bottom plate, a six-axis base, a guide rail fixing seat, a quick clamping assembly and the like; the guide rail fixing seat is arranged on the front side of the six-axis base through an elevation flat plate, the guide rail fixing seat is slidably connected with a first moving seat through a first linear guide rail, and the rapid clamping assembly is arranged at the right end of the first moving seat; the second clamping mechanism comprises a second bottom plate, a supporting frame, a supporting plate, a spring clamping assembly and the like, the bottom of the supporting frame is arranged on the second bottom plate through an X-Y-axis precise adjusting table, the supporting plate is arranged on the top of the supporting frame through a Z-axis precise adjusting table, and the spring clamping assembly is arranged at the left end of the supporting plate. Through the coaxial design of the rapid clamping assembly and the spring clamping assembly, light spots of two collimation light paths can be directly captured, and the problems that manual light focusing is low in efficiency and poor in stability are effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of optical fiber communication technology, and specifically relates to a fixture for optical fiber collimation. Background Technology

[0002] Collimation and coupling technologies are key core technologies in the optical communication industry and a major research focus. In existing technologies, coupling two collimated beams requires manual adjustment of the beam direction and distance to achieve the desired coupling effect. While some existing fixtures employ V-groove quick-clamping mechanisms and V-groove spring clamping mechanisms to support the collimated beams and use a micrometer on a six-axis base to adjust the beam parameters, they still suffer from the following shortcomings: First, manual adjustment relies on operational experience, making it prone to adjustment errors and resulting in unstable coupling accuracy. Second, the fixtures have weak overall anti-interference capabilities, and external vibrations can easily affect the coupling efficiency of the collimated beam path. Third, the adjustment process is cumbersome and cannot meet the efficiency requirements of mass production, resulting in overall low efficiency and poor stability.

[0003] Therefore, there is an urgent need for a fixture for optical fiber collimation to solve the above problems. Summary of the Invention

[0004] To address the aforementioned deficiencies in existing technologies, this invention provides a fixture for optical fiber collimation, comprising a shock-resistant platform and a first clamping mechanism and a second clamping mechanism disposed on the left and right sides above the shock-resistant platform. The first clamping mechanism includes a first base plate, a six-axis base, an elevation plate, a guide rail fixing seat, and a quick-clamping assembly. The first base plate is fixed to the shock-resistant platform, the six-axis base is fixed to the first base plate, the elevation plate is disposed on the front side of the six-axis base, the guide rail fixing seat is disposed on the front end face of the elevation plate, a first linear guide rail is disposed on the guide rail fixing seat, a first movable seat is slidably connected to the first linear guide rail, and the quick-clamping assembly is fixedly disposed at the right end of the first movable seat for clamping and fixing the first optical fiber.

[0005] The second clamping mechanism includes a second base plate, a support frame, an XY-axis precision adjustment table, a Z-axis precision adjustment table, a tray, and a spring clamping assembly. The second base plate is fixed on the anti-vibration platform. The bottom of the support frame is set on the second base plate via the XY-axis precision adjustment table. The tray is set on the top of the support frame via the Z-axis precision adjustment table. The spring clamping assembly is fixed on the left end of the tray and is used to clamp and fix the second optical fiber. The XY-axis precision adjustment table and the Z-axis precision adjustment table are used to adjust the orientation of the tray, thereby adjusting the orientation of the second collimated spot on the spring clamping assembly.

[0006] Preferably, the quick clamping assembly includes a support platform and a pressure rod. The support platform is fixedly connected to the first movable seat. A hinge seat is provided above the support platform. The middle part of the pressure rod is hinged to the hinge seat by a pin. A first compression spring is connected between the rear end of the pressure rod and the top of the rear side of the support platform.

[0007] Preferably, the top of the support platform is provided with a first V-shaped groove, and the first V-shaped groove is located on the front side of the hinge seat to accommodate the first optical fiber.

[0008] Preferably, a pressure block is provided at the front end of the pressure rod, and the pressure block is vertically opposite to the first V-shaped groove of the support platform. Utilizing the lever principle, one end of the pressure rod, under the elastic force of the first compression spring, enables the pressure block at the other end to clamp the first optical fiber in the first V-shaped groove, thereby playing a clamping and fixing role.

[0009] Preferably, the spring clamping assembly includes a mounting base, which is fixedly connected to the support plate. Two limiting plates are fixed at the front and rear ends of the mounting base. A second linear guide rail is provided on the left side of the mounting base. Two second movable seats are slidably connected at the front and rear ends of the second linear guide rail, and a clamping plate is installed on the left side of each of the two second movable seats.

[0010] Preferably, a second V-shaped groove is provided on the opposite sides of the top of the two clamping plates, and the gap between the first V-shaped groove and the two second V-shaped grooves is coaxial and opposite to each other.

[0011] Preferably, each limiting plate is fixedly connected to a limiting rod, and one end of the limiting rod is inserted into the second movable seat on the corresponding side. A second compression spring is sleeved on the outside of the limiting rod, and the second compression spring is located between the limiting plate and the second movable seat on the corresponding side. The limiting rod mainly plays a guiding role. The two second movable seats are aligned under the action of the second compression spring and clamp the second optical fiber through the second V-shaped groove on the two clamping plates, thereby achieving the function of clamping and fixing.

[0012] Preferably, the six-axis base is provided with six-axis motion axes, including a first X-axis micrometer, a Y-axis micrometer, a Z-axis micrometer, a first angle micrometer, an elevation micrometer, and a second angle micrometer, all mounted on the six-axis base; the first X-axis micrometer, the Y-axis micrometer, the Z-axis micrometer, the first angle micrometer, the elevation micrometer, and the second angle micrometer are used to adjust the elevation angle and azimuth of the guide rail fixing seat, thereby adjusting the elevation angle and azimuth of the first collimated spot on the quick-clamping assembly.

[0013] Preferably, the pallet is provided with a fine-tuning block base and a fine-tuning block. The fine-tuning block base is fixed on the pallet, and the fine-tuning block is slidably connected to the fine-tuning block base. A workpiece rear adjustment block is fixed to the left end of the fine-tuning block, and a second X-axis fine-tuning micrometer is provided to the right end of the fine-tuning block for adjusting the position of the fine-tuning block.

[0014] This invention also includes other components that enable the proper use of a fixture for optical fiber collimation, all of which are conventional techniques in the art. Furthermore, any devices or components not specified in this invention employ conventional techniques in the art.

[0015] The working principle of this invention is as follows: First, the collimated light is fixed: the first optical fiber is fixed in the first V-groove of the quick-clamping assembly, so that the first collimated spot of the first optical fiber faces the coupling direction; the second optical fiber is fixed in the second V-groove of the spring clamping assembly, and through the coaxial design of the quick-clamping assembly and the spring clamping assembly, the second collimated spot is initially aligned with the first collimated spot. Then, the positioning is adjusted: by adjusting the XY-axis precision adjustment stage and the Z-axis precision adjustment stage of the support frame, the positional deviation between the first collimated spot and the second collimated spot is reduced. At the same time, by adjusting the six-axis motion axis on the six-axis base and the second X-axis micrometer, the deviation between the two spots is further reduced until the overlapping spot of the two collimated lights is clearly captured; finally, the coupling operation is performed: after confirming that the two spots are stably aligned, the coupling device is started to complete the coupling of the two collimated light paths. During the coupling process, the anti-vibration platform continuously isolates external vibrations to ensure coupling accuracy.

[0016] The beneficial effects of this invention are: (1) The present invention has high precision: through the coaxial design of the quick clamping component and the spring clamping component, the coaxiality of the collimation light is initially guaranteed, and with the help of multi-directional micrometers (X-axis, Y-axis, Z-axis, angle, elevation angle, etc.), precise adjustment is achieved, thereby improving the coupling accuracy. (2) The present invention has good stability: the anti-vibration platform is set up to effectively isolate the influence of external vibration on the straight optical path and avoid the coupling efficiency from decreasing due to interference; at the same time, the mechanical clamping and adjustment structure reduces human operation error and significantly improves stability.

[0017] (3) The invention is highly efficient: the coaxial design of the first V-groove and the second V-groove allows the collimated light to be coupled directly without repeated adjustment of direction and position, greatly shortening the adjustment time and making it suitable for mass production.

[0018] (4) The invention is easy to operate: the modular structural design and clear functional zoning reduce the difficulty of operation and can complete basic light matching work without professional personnel. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the first clamping mechanism of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the quick clamping assembly of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the second clamping mechanism of the present invention.

[0024] Figure 5 This is a schematic diagram of the spring clamping assembly of the present invention.

[0025] In the diagram: 1. Anti-vibration platform, 2. First clamping mechanism, 3. Second clamping mechanism, 4. First base plate, 5. Six-axis base, 6. Elevation plate, 7. Guide rail fixing seat, 8. Quick clamping assembly, 9. First linear guide rail, 10. First moving seat, 11. Support platform, 12. Pressure rod, 13. Hinge seat, 14. First V-groove, 15. First compression spring, 16. Pressure block, 17. First X-axis micrometer, 18. Y-axis micrometer, 19. Z-axis micrometer, 20. First angle micrometer, 21. 1. Elevation micrometer, 22. Second angle micrometer, 23. Second base plate, 24. Support frame, 25. XY axis precision adjustment table, 26. Z axis precision adjustment table, 27. Support plate, 28. Spring clamping assembly, 29. Mounting base, 30. Limiting plate, 31. Second linear guide, 32. Second moving seat, 33. Clamping plate, 34. Second V-groove, 35. Limiting rod, 36. Second compression spring, 37. Micrometer block base, 38. Micrometer block, 39. Workpiece back adjustment block, 40. Second X-axis micrometer. Detailed Implementation

[0026] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely illustrative and is not intended to limit the scope of the invention. Any modifications, equivalent substitutions, or improvements made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the scope of protection of the present invention.

[0027] Example like Figure 1-5As shown, this embodiment of the invention provides a fixture for optical fiber collimation, including a shockproof platform 1, and a first clamping mechanism 2 and a second clamping mechanism 3 disposed on the left and right sides above the shockproof platform 1. The first clamping mechanism 2 includes a first base plate 4, a six-axis base 5, an elevation plate 6, a guide rail fixing seat 7, and a quick clamping assembly 8. The first base plate 4 is fixed on the shockproof platform 1, the six-axis base 5 is fixed on the first base plate 4, the elevation plate 6 is disposed on the front side of the six-axis base 5, the guide rail fixing seat 7 is disposed on the front end face of the elevation plate 6, a first linear guide rail 9 is disposed on the guide rail fixing seat 7, a first movable seat 10 is slidably connected to the first linear guide rail 9, and the quick clamping assembly 8 is fixedly disposed on the right end of the first movable seat 10 for clamping and fixing the first optical fiber. 8 includes a support platform 11 and a pressure rod 12. The support platform 11 is fixedly connected to the first movable seat 10. A hinge seat 13 is provided above the support platform 11. A first V-groove 14 is opened on the top of the support platform 11 and is located on the front side of the hinge seat 13 to accommodate the first optical fiber. The middle part of the pressure rod 12 is hinged to the hinge seat 13 by a pin. A first compression spring 15 is connected between the rear end of the pressure rod 12 and the top of the rear side of the support platform 11. A pressure block 16 is provided at the front end of the pressure rod 12 and is vertically opposite to the first V-groove 14 of the support platform 11. Using the lever principle, one end of the pressure rod 12, under the elastic force of the first compression spring 15, enables the pressure block 16 at the other end to clamp the first optical fiber in the first V-groove 14, thereby playing a clamping and fixing role.

[0028] In addition, the six-axis base 5 is provided with a six-axis motion axis, which includes a first X-axis micrometer 17, a Y-axis micrometer 18, a Z-axis micrometer 19 and a first angle micrometer 20 set on the six-axis base 5, an elevation angle micrometer 21 set on the elevation plate 6, and a second angle micrometer 22 set on the guide rail fixing seat 7. The first X-axis micrometer 17, Y-axis micrometer 18, Z-axis micrometer 19, first angle micrometer 20, elevation angle micrometer 21 and second angle micrometer 22 are used to adjust the elevation angle and azimuth of the guide rail fixing seat 7, thereby realizing the adjustment of the elevation angle and azimuth of the first collimated spot on the quick clamping assembly 8.

[0029] The second clamping mechanism 3 includes a second base plate 23, a support frame 24, an XY-axis precision adjustment table 25, a Z-axis precision adjustment table 26, a support plate 27, and a spring clamping assembly 28. The second base plate 23 is fixed on the anti-vibration platform 1. The bottom of the support frame 24 is set on the second base plate 23 via the XY-axis precision adjustment table 25. The support plate 27 is set on the top of the support frame 24 via the Z-axis precision adjustment table 26. The spring clamping assembly 28 is fixedly set on the left end of the support plate 27 for clamping and fixing the second optical fiber. The XY-axis precision adjustment table 25 and the Z-axis precision adjustment table 26 are used to adjust the orientation of the support plate 27, thereby adjusting the orientation of the second collimated spot on the spring clamping assembly 28. The spring clamping assembly 28 includes a mounting base 29, which is fixedly connected to the support plate 27. Two limiting plates 30 are fixed at the front and rear ends of the mounting base 29. A limiting plate 30 is set on the left side of the mounting base 29. A second linear guide rail 31 is provided, and two second movable seats 32 are slidably connected to the front and rear ends of the second linear guide rail 31. A clamping plate 33 is installed on the left side of each of the two second movable seats 32. A second V-shaped groove 34 is opened on the opposite side of the top of each clamping plate 33. The gap between the first V-shaped groove 14 and the two second V-shaped grooves 34 is coaxially opposite to each other. A limiting plate 30 is fixedly inserted through a limiting rod 35, and one end of the limiting rod 35 is inserted into the second movable seat 32 on the corresponding side. A second compression spring 36 is sleeved on the outside of the limiting rod 35. The second compression spring 36 is located between the limiting plate 30 and the second movable seat 32 on the corresponding side. The limiting rod 35 mainly plays a guiding role. Under the action of the second compression spring 36, the two second movable seats 32 are centered and clamp the second optical fiber through the second V-shaped grooves 34 on the two clamping plates 33, thereby achieving the function of clamping and fixing.

[0030] In addition, the tray 27 is provided with a fine adjustment block base 37 and a fine adjustment block 38. The fine adjustment block base 37 is fixed on the tray 27, and the fine adjustment block 38 is slidably connected to the fine adjustment block base 37. The left end of the fine adjustment block 38 is fixed with a workpiece rear adjustment block 39, and the right end of the fine adjustment block 38 is provided with a second X-axis fine adjustment micrometer 40 for adjusting the position of the fine adjustment block 38.

[0031] The working principle of this invention is as follows: First, the collimated light is fixed: the first optical fiber is fixed in the first V-groove 14 of the quick-clamping assembly 8, so that the first collimated spot of the first optical fiber faces the coupling direction; the second optical fiber is fixed in the second V-groove of the spring clamping assembly 28. Through the coaxial design of the quick-clamping assembly 8 and the spring clamping assembly 28, the second collimated spot is initially aligned with the first collimated spot. Then, the positioning is adjusted: by adjusting the XY axis precision adjustment stage 25 and the Z axis precision adjustment stage 26 of the support frame 24, the positional deviation between the first collimated spot and the second collimated spot is reduced. At the same time, by adjusting the six-axis motion axis on the six-axis base 5 and the second X-axis micrometer 40, the deviation between the two spots is further reduced until the overlapping spot of the two collimated lights is clearly captured; finally, the coupling operation is performed: after confirming that the two spots are stably overlapped, the coupling device is started to complete the coupling of the two collimated light paths. During the coupling process, the anti-vibration platform 1 continuously isolates external vibrations to ensure coupling accuracy.

[0032] This embodiment achieves high efficiency and precision in collimation and light alignment through standardized operating procedures. The time for a single light alignment adjustment is reduced by more than 50% compared to existing technologies, and the coupling accuracy fluctuation range is controlled within ±0.01mm, which can meet the mass production needs of the optical communication industry.

[0033] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A fixture for optical fiber collimation, comprising a shock-resistant platform, and a first clamping mechanism and a second clamping mechanism disposed on the left and right sides above the shock-resistant platform, characterized in that: The first clamping mechanism includes a first base plate, a six-axis base, an elevation plate, a guide rail fixing seat, and a quick clamping assembly. The first base plate is fixed on the anti-vibration platform, the six-axis base is fixed on the first base plate, the elevation plate is set on the front side of the six-axis base, the guide rail fixing seat is set on the front end face of the elevation plate, the guide rail fixing seat is provided with a first linear guide rail, a first movable seat is slidably connected to the first linear guide rail, and the quick clamping assembly is fixedly set on the right end of the first movable seat for clamping and fixing the first optical fiber. The second clamping mechanism includes a second base plate, a support frame, an XY-axis precision adjustment table, a Z-axis precision adjustment table, a tray, and a spring clamping assembly. The second base plate is fixed on the anti-vibration platform. The bottom of the support frame is set on the second base plate via the XY-axis precision adjustment table. The tray is set on the top of the support frame via the Z-axis precision adjustment table. The spring clamping assembly is fixed on the left end of the tray for clamping and fixing the second optical fiber.

2. The fixture for optical fiber collimation and alignment according to claim 1, characterized in that: The quick clamping assembly includes a support platform and a pressure rod. The support platform is fixedly connected to the first movable seat. A hinge seat is provided above the support platform. The middle part of the pressure rod is hinged to the hinge seat by a pin. A first compression spring is connected between the rear end of the pressure rod and the top of the rear side of the support platform.

3. The fixture for optical fiber collimation and alignment according to claim 2, characterized in that: The top of the support platform is provided with a first V-shaped groove, and the first V-shaped groove is located on the front side of the hinge seat.

4. The fixture for optical fiber collimation and alignment according to claim 3, characterized in that: The front end of the pressure rod is provided with a pressure block, and the pressure block is vertically aligned with the first V-groove of the support platform.

5. The fixture for optical fiber collimation and beam alignment according to claim 1, characterized in that: The spring clamping assembly includes a mounting base, which is fixedly connected to the support plate. Two limiting plates are fixed at the front and rear ends of the mounting base. A second linear guide rail is provided on the left side of the mounting base. Two second movable seats are slidably connected at the front and rear ends of the second linear guide rail, and a clamping plate is installed on the left side of each of the two second movable seats.

6. The fixture for optical fiber collimation and alignment according to claim 5, characterized in that: A second V-shaped groove is provided on the opposite sides of the top of both clamping plates.

7. The fixture for optical fiber collimation and alignment according to claim 6, characterized in that: Each limiting plate is fixedly connected to a limiting rod, and one end of the limiting rod is inserted into the second movable seat on the corresponding side. A second compression spring is sleeved on the outside of the limiting rod, and the second compression spring is located between the limiting plate and the second movable seat on the corresponding side.

8. The fixture for optical fiber collimation and alignment according to claim 1, characterized in that: The six-axis base is equipped with six-axis motion axes, including a first X-axis micrometer, a Y-axis micrometer, a Z-axis micrometer and a first angle micrometer mounted on the six-axis base, an elevation micrometer mounted on the elevation plate, and a second angle micrometer mounted on the guide rail fixing seat.

9. The fixture for optical fiber collimation and beam alignment according to claim 1, characterized in that: The tray is equipped with a fine adjustment block base and a fine adjustment block. The fine adjustment block base is fixed on the tray, and the fine adjustment block is slidably connected to the fine adjustment block base. The left end of the fine adjustment block is fixed with a workpiece rear adjustment block, and the right end of the fine adjustment block is equipped with a second X-axis fine adjustment micrometer.

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