An optical fiber positioner
By combining coarse and fine adjustment components with Z-axis adjustment, the adjustment accuracy and stability of the fiber optic positioner are improved, solving the problem of insufficient fiber optic adjustment accuracy in existing technologies and meeting the positioning requirements of high-end applications.
Patent Information
- Application Number
- CN202522533219.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-28
AI Technical Summary
The adjustment accuracy of single-mode optical fibers in the current technology is limited, which makes it difficult to meet the requirements of high-end application fields such as fiber lasers for the spatial positioning accuracy and stability of the fiber end face.
The design employs a combination of coarse and fine adjustment components. The fine adjustment lever is threadedly connected to the coarse adjustment screw, allowing the rotation of the fine adjustment screw to drive a slight movement of the coarse adjustment screw. Combined with the Z-axis adjustment component, this improves the adjustment accuracy and stability of fiber optic positioning.
It significantly improves the adjustment accuracy of fiber positioning, achieving a coarse adjustment of 0.01μm for every 5° rotation, and enhances the alignment accuracy and stability of the fiber end face.
Smart Images
Figure CN224934206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to optical fiber communication technology, and in particular to an optical fiber locator. Background Technology
[0002] With the rapid development of technologies such as fiber optic communication, fiber optic sensing, and high-power fiber lasers, single-mode fiber, as the core medium for optical signal transmission, is finding increasingly wide applications and facing increasingly stringent requirements. Especially in high-end applications such as the construction of resonant cavities for fiber lasers, pump coupling, and optical path connections and calibration in testing instruments, fiber optic links are required to possess not only low insertion loss, high return loss, excellent environmental stability, and low polarization dependence, but also to pose near-extreme challenges to the spatial positioning accuracy and stability of the fiber endface.
[0003] In existing technologies, the adjustment accuracy of single-mode fiber positioning mainly depends on the pitch of the threaded pair, which has limited adjustment accuracy. Utility Model Content
[0004] The purpose of this invention is to provide a fiber optic positioner to solve the problems existing in the prior art and to significantly improve the adjustment accuracy.
[0005] This utility model provides a fiber optic positioner, including a base and an adjustment plate. The base has a receiving cavity for accommodating the adjustment plate, and both the base and the adjustment plate have mounting holes for installing fiber optic adapters. The base has a coarse adjustment component and a fine adjustment component, which are used to adjust the position of the adjustment plate radially in the mounting holes. The coarse adjustment component includes a coarse adjustment screw, which is threaded to the base, and its inner end extends into the receiving cavity and abuts against the side wall of the adjustment plate. The fine adjustment component includes a fine adjustment lever and a fine adjustment screw. One end of the fine adjustment lever is threaded to the coarse adjustment screw, and the fine adjustment screw is threaded to the base. The inner end of the fine adjustment screw is connected to the other end of the fine adjustment lever, which can drive the coarse adjustment screw to rotate. A first elastic element is also provided between the base and the adjustment plate. The elastic force of the first elastic element on the adjustment plate is parallel to the axial direction of the coarse adjustment screw, and it is used to provide a restoring force to the adjustment plate.
[0006] As one embodiment, the inner end of the fine-tuning screw abuts against one side wall of the end of the fine-tuning lever; the fiber optic positioner also includes a fine-tuning spring assembly, which includes an abutment post and a compression spring. The compression spring is disposed in the base, one end of the abutment post abuts against the compression spring, and the other end abuts against the other side wall of the end of the fine-tuning lever.
[0007] As one implementation, it includes at least two sets of the coarse adjustment components, the fine adjustment components, and the fine adjustment spring-off components, which respectively adjust the position of the adjustment plate in the X and Y directions.
[0008] In one embodiment, the first elastic element is a first tension spring.
[0009] As one embodiment, it also includes a rear seat fixedly connected to the base, the rear seat being provided with a central gear and at least three planetary gears meshing with the central gear, the central gear being coaxial with the center line of the adjustment plate, the planetary gears being threadedly connected to a Z-axis adjusting screw, the axis of the Z-axis adjusting screw being parallel to the axis of the mounting hole, and the end of the Z-axis adjusting screw being connected to the end face of the adjustment plate.
[0010] As one embodiment, at least one of the Z-axis adjusting screws is provided with an adjusting knob, the adjusting knob is provided with a plurality of countersunk grooves spaced apart along its circumference, a fastening bolt is provided in the countersunk groove, the end of the fastening bolt is fixedly connected to the planetary gear, and the nut of the fastening bolt abuts against the countersunk groove.
[0011] In one embodiment, the end of the Z-axis adjusting screw abuts against the end face of the adjusting plate, and a second tension spring is provided between the adjusting plate and the base. The tension direction of the second tension spring is parallel to the axial direction of the Z-axis adjusting screw, and is used to provide a restoring force to the adjusting plate.
[0012] In one embodiment, a plurality of screw sleeves are fixed on the base, and the screw sleeves are respectively threadedly connected to the fine adjustment screw, the coarse adjustment screw, and the Z-axis adjustment screw.
[0013] In one embodiment, a first open wave washer is fitted on the coarse adjustment screw and a first locking ring is threadedly connected thereto, the first open wave washer being located between the first locking ring and the fine adjustment lever; a second open wave washer is fitted on the Z-axis adjustment screw and a second locking ring is threadedly connected thereto, the second open wave washer being located between the second locking ring and the planetary gear.
[0014] In one embodiment, the sidewall of the first locking ring is provided with a plurality of first grooves along the circumferential direction, and the fine-tuning lever is also threaded with a first screw parallel to the axial direction of the first locking ring, the nut of the first screw engaging with the first groove; the sidewall of the second locking ring is provided with a plurality of second grooves along the circumferential direction, and the planetary gear is also threaded with a second screw parallel to the axial direction of the second locking ring, the nut of the second screw engaging with the second groove.
[0015] Compared with the prior art, this utility model has the following technical advantages: This invention sets up a coarse adjustment component and a fine adjustment component, and threads the fine adjustment lever in the fine adjustment component with the coarse adjustment screw in the coarse adjustment component. By rotating the fine adjustment screw, the fine adjustment lever can be moved. The transmission chain of fine adjustment screw rotation - fine adjustment screw movement - coarse adjustment screw rotation - coarse adjustment screw movement ensures that when the fine adjustment screw rotates, it can drive the coarse adjustment screw to make a small movement. Compared with the method of directly rotating the coarse adjustment screw to make it move, the adjustment accuracy can be significantly improved by converting the rotation of the fine adjustment screw into the rotation of the coarse adjustment screw.
[0016] Compared with the prior art, other technical solutions in this utility model have the following technical effects: The Z-axis adjustment component in this invention can not only move the entire adjustment plate, but also adjust the pitch of the adjustment plate by rotating the Z-axis adjustment screw individually, making the adjustment method of the adjustment plate more diverse and more conducive to ensuring the alignment accuracy of the optical fiber. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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 the fiber optic positioner in one embodiment of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 A structural diagram from a rear-view perspective; Figure 4 This is a schematic diagram of the cooperative structure of the fine adjustment component, coarse adjustment component, Z-axis adjustment component and adjustment plate in one embodiment of the present invention; Figure 5 This is a schematic diagram of the Z-axis adjustment component from one perspective in one embodiment of the present invention; Figure 6 This is a schematic diagram of the Z-axis adjustment component in one embodiment of the present invention from another perspective; Figure 7 This is a schematic diagram of the assembly of the Z-axis adjusting screw and the adjusting knob in one embodiment of the present invention.
[0019] Figure label: 1. Base; 2. Adjustment plate; 3. Mounting hole; 41. X-axis coarse adjustment assembly; 42. Y-axis coarse adjustment assembly; 401. Coarse adjustment screw; 51. X-axis fine adjustment assembly; 52. Y-axis fine adjustment assembly; 501. Fine adjustment screw; 502. Fine adjustment lever; 6. First tension spring; 7. Fine adjustment rebound assembly; 71. Abutment post; 72. Compression spring; 8. Rear seat; 9. Z-axis adjustment assembly; 91. Center gear; 92. Planetary gear; 93. Z-axis adjustment screw; 94. Adjustment knob; 941. Countersunk groove; 95. Fastening bolt; 10. Second tension spring; 11. Screw sleeve; 12. First locking ring; 13. First screw; 14. Second locking ring; 15. Second screw; 16. Locking screw. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] The purpose of this invention is to provide a fiber optic positioner to solve the problems existing in the prior art and to significantly improve the adjustment accuracy.
[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] like Figures 1-7As shown, this embodiment provides a fiber optic locator, including a base 1 and an adjustment plate 2. At least two threaded holes are provided on each of the two mutually perpendicular fixing surfaces of the base 1 for fixing the base 1. A receiving cavity for accommodating the adjustment plate 2 is provided in the middle of the base 1. Both the base 1 and the adjustment plate 2 are provided with mounting holes 3 for installing fiber optic adapters. The two mounting holes 3 are coaxially arranged to form an assembly channel. A coarse adjustment component and a fine adjustment component are provided on the base 1. The coarse adjustment component and the fine adjustment component are used to adjust the position of the adjustment plate 2 radially along the mounting holes 3 (in this embodiment, the mounting holes 3 are not necessarily located at the center of the adjustment plate 2; the adjustment direction of the coarse adjustment component and the fine adjustment component can be along the radial direction of the mounting holes 3 or parallel to the radial direction of the mounting holes 3). The coarse adjustment component includes a coarse adjustment screw 401, which is threadedly connected to the base 1. The inner end of the coarse adjustment screw 401 extends into the receiving cavity and abuts against the side wall of the adjustment plate 2. The fine-tuning assembly includes a fine-tuning lever 502 and a fine-tuning screw 501. One end of the fine-tuning lever 502 is threadedly connected to the coarse-tuning screw 401, and the fine-tuning screw 501 is threadedly connected to the base 1. The inner end of the fine-tuning screw 501 is connected to the other end of the fine-tuning lever 502, which can drive the coarse-tuning screw 401 to rotate. A first elastic element is also provided between the base 1 and the adjustment plate 2. The elastic force of the first elastic element on the adjustment plate 2 is parallel to the axial direction of the coarse-tuning screw 401, and is used to provide a reset force to the adjustment plate 2.
[0024] When the optical fiber needs to be aligned, first rotate the coarse adjustment screw 401, causing it to move inward and push the adjustment plate 2 to move. During the movement of the adjustment plate 2, the position of the optical fiber is coarsely adjusted, and the first elastic element undergoes elastic deformation. After the coarse adjustment reaches a certain level, rotate the fine adjustment screw 501. The fine adjustment screw 501 pushes the fine adjustment lever 502 to rotate. When the fine adjustment lever 502 rotates, it drives the coarse adjustment screw 401 to rotate, which in turn continues to push the adjustment plate 2 to move until the adjustment plate 2 is properly adjusted. When the adjustment plate 2 needs to be adjusted in the opposite direction, simply rotate the coarse adjustment screw 401 and the fine adjustment screw 501 in the opposite direction.
[0025] It should be noted that in this embodiment, the threaded fit clearance between the coarse adjustment screw 401 and the base 1 is relatively large, resulting in low friction; while the threaded fit clearance between the coarse adjustment screw 401 and the fine adjustment lever 502 is relatively small, resulting in high friction. Through repeated design and testing, it has been demonstrated that when the coarse adjustment screw 401 is rotated alone, the fine adjustment lever 502 does not rotate, only the coarse adjustment screw 401 rotates; however, when the fine adjustment screw 501 rotates, it drives the fine adjustment lever 502 to rotate. Under the influence of the high friction between the fine adjustment screw 501 and the coarse adjustment screw 401, the coarse adjustment screw 401 will rotate synchronously with the fine adjustment lever 502.
[0026] Therefore, this embodiment sets up a coarse adjustment component and a fine adjustment component, and threads the fine adjustment lever 502 in the fine adjustment component with the coarse adjustment screw 401 in the coarse adjustment component. By rotating the fine adjustment screw 501, the fine adjustment lever 502 can be moved. The transmission chain of fine adjustment screw 501 rotation - fine adjustment screw 501 movement - coarse adjustment screw 401 rotation - coarse adjustment screw 401 movement can ensure that when the fine adjustment screw 501 rotates, it can drive the coarse adjustment screw 401 to make a slight movement. Compared with the method of directly rotating the coarse adjustment screw 401 to make it move, the form of converting the rotation of the fine adjustment screw 501 into the rotation of the coarse adjustment screw 401 can significantly improve the adjustment accuracy.
[0027] After testing and verification, it was found that the fine adjustment component in this embodiment can achieve an adjustment accuracy of 0.01μm axial movement of the coarse adjustment screw 401 for every 5° rotation.
[0028] In this embodiment, the inner end of the fine-tuning screw 501 abuts against one side wall of the end of the fine-tuning lever 502; the fiber optic positioner also includes a fine-tuning spring-loaded assembly 7, which includes an abutment post 71 and a compression spring 72. The compression spring 72 is disposed in the base 1, one end of the abutment post 71 abuts against the compression spring 72, and the other end abuts against the other side wall of the end of the fine-tuning lever 502. In this embodiment, the elastic coefficient of the compression spring 72 is relatively large. When it is not directly compressed (the fine-tuning lever 502 is not subjected to pressure from the fine-tuning screw 501, so the fine-tuning lever 502 does not apply pressure to the compression spring 72), the frictional force applied by the coarse-tuning screw 401 to the fine-tuning lever 502 during rotation is insufficient to overcome the elastic force of the compression spring 72, so the fine-tuning lever 502 will not rotate when the coarse-tuning screw 401 rotates alone.
[0029] In some embodiments, the fine-tuning spring-back assembly 7 may be omitted. In this case, the end of the fine-tuning screw 501 and the fine-tuning lever 502 can be hinged together. The extension and retraction of the fine-tuning screw 501 can directly pull the fine-tuning screw 501 through the hinge, causing the fine-tuning lever 502 to rotate. Under the limiting action of the fine-tuning screw 501, the fine-tuning lever 502 will not rotate under the action of the coarse-tuning screw 401 when the fine-tuning screw 501 is not rotating.
[0030] This embodiment includes at least two sets of coarse adjustment components, fine adjustment components, and fine adjustment spring-back components 7. These components adjust the position of the adjustment plate 2 in the X and Y directions, respectively. In this embodiment, the X and Y directions are perpendicular to each other, and the planes containing the X and Y directions are parallel to the radial plane of the mounting hole 3. Figures 1-4 As shown, this embodiment simultaneously includes an X-axis coarse adjustment component 41, a Y-axis coarse adjustment component 42, an X-axis fine adjustment component 51, and a Y-axis fine adjustment component 52.
[0031] In this embodiment, both the abutting end of the coarse adjustment screw 401 and the abutting end of the fine adjustment screw 501 have a spherical structure to reduce wear on the surface of the abutting parts.
[0032] In this embodiment, the first elastic element is a first tension spring 6. The tension direction of the first tension spring 6 is arranged radially along or parallel to the mounting hole 3, and is used to provide a restoring force to the adjusting plate 2. In order to reduce the number of first tension springs, in this embodiment, the tension direction of the first tension spring 6 is at an angle of 45° with both the X and Y directions, so that one first tension spring 6 is sufficient to stretch the adjusting plate 2 in the X or Y direction.
[0033] In this embodiment, both the base 1 and the adjusting plate 2 are equipped with detachable pull rods. The two ends of the first tension spring 6 are connected to the two pull rods via hooks. The pull rods connected to the first tension spring 6 can be bolts.
[0034] like Figures 4-6 As shown, this embodiment also includes a rear seat 8 fixedly connected to the base 1, which can be connected by bolts. A Z-axis adjustment assembly 9 is provided on the rear seat 8. The Z-axis adjustment assembly 9 includes a central gear 91 and at least three planetary gears 92 meshing with the central gear 91. The central gear 91 is coaxial with the centerline of the adjustment plate 2. Z-axis adjustment screws 93 are threadedly connected to the planetary gears 92. The axial direction of the Z-axis adjustment screws 93 is parallel to the axial direction of the mounting hole 3. The end of the Z-axis adjustment screws 93 is connected to the end face of the adjustment plate 2. In this embodiment, the ends of the three Z-axis adjustment screws 93 are respectively positioned close to the three corners of the adjustment plate 2, and their ends can form an adjustment surface. By turning the central gear 91 or one of the Z-axis adjustment screws 93, the three Z-axis adjustment screws 93 can be driven to rotate synchronously, thereby pushing the adjustment plate 2 to move along the Z-axis.
[0035] It should be noted that the threaded connection between the planetary gear 92, the Z-axis adjusting screw 93, and the base 1 is similar to that between the fine-tuning lever 502, the coarse-tuning screw 401, and the base 1. The friction between the planetary gear 92 and the Z-axis adjusting screw 93 is relatively large, causing the Z-axis adjusting screw 93 to rotate when the gear is turned. When an external force is applied to one of the planetary gears 92, for example, by clamping it with clamps to prevent rotation, the other two planetary gears 92 and the central gear 91 will also be unable to rotate. However, in this case, turning the Z-axis adjusting screw 93 alone is feasible. Turning the Z-axis adjusting screw 93 rotates it and moves it along the Z-axis, allowing adjustment of a specific point on the adjusting plate 2, thereby achieving pitch adjustment of the adjusting plate 2 (changing the angle between the plane of the adjusting plate 2 and the surfaces formed by the X and Y axes).
[0036] To facilitate individual tightening of the coarse adjustment screw 401, fine adjustment screw 501, and Z-axis adjustment screw 93, in this embodiment, the exposed ends of the coarse adjustment screw 401, fine adjustment screw 501, and Z-axis adjustment screw 93 are all provided with hexagonal blind holes.
[0037] In this embodiment, at least one Z-axis adjusting screw 93 is provided with an adjusting knob 94. The adjusting knob 94 is provided with multiple countersunk grooves 941 spaced apart along its circumference. A fastening bolt 95 is provided in the countersunk groove 941, and the end of the fastening bolt 95 is fixedly connected to the planetary gear 92. The nut of the fastening bolt 95 abuts against the countersunk groove 941. By turning the adjusting knob 94, the three planetary gears 92 can be driven to rotate simultaneously. In this embodiment, the rear seat 8 is also provided with a locking screw 16, which is used to tighten the adjusting knob 94 when it is adjusted to the correct position.
[0038] In this embodiment, the end of the Z-axis adjusting screw 93 abuts against the end face of the adjusting plate 2. A second tension spring 10 is also provided between the adjusting plate 2 and the base 1. The tension direction of the second tension spring 10 is parallel to the axial direction of the Z-axis adjusting screw 93, and it is used to provide a restoring force to the adjusting plate 2. Specifically, both the base 1 and the adjusting plate 2 are provided with detachable pull rods, and the two ends of the second tension spring 10 are connected to the two pull rods through hooks.
[0039] In some embodiments, the second tension spring 10 may not be provided. In this case, the end of the Z-direction adjusting screw 93 and the adjusting plate 2 can be hinged together. The extension and retraction of the Z-direction adjusting screw 93 can be directly pulled by the hinge, thereby driving the adjusting plate 2 to rotate.
[0040] In this embodiment, a plurality of threaded sleeves 11 are fixed on the base 1. The threaded sleeves 11 are threadedly connected to the fine-tuning screw 501, the coarse-tuning screw 401, and the Z-direction adjusting screw 93, respectively. The threaded sleeves 11 can be fixed to the base 1 by adhesive bonding. The threaded fit clearance between the threaded sleeves 11 and the fine-tuning screw 501, the coarse-tuning screw 401, and the Z-direction adjusting screw 93 is relatively large, resulting in low friction.
[0041] In this embodiment, there is a certain interval between the fine-tuning lever 502, the planetary gear 92 and the corresponding screw sleeve 11.
[0042] In this embodiment, a first open wave washer is fitted on the coarse adjustment screw 401 and a first locking ring 12 is threadedly connected to it. The first open wave washer is located between the first locking ring 12 and the fine adjustment lever 502. The first locking ring 12 presses the fine adjustment lever 502 onto the coarse adjustment screw 401 to increase the friction between the fine adjustment lever 502 and the coarse adjustment screw 401. A second open wave washer is fitted on the Z-axis adjustment screw 93 and a second locking ring 14 is threadedly connected to it. The second open wave washer is located between the second locking ring 14 and the planetary gear 92 to increase the friction between the planetary gear 92 and the Z-axis adjustment screw 93.
[0043] In this embodiment, the first locking ring 12 has multiple first grooves circumferentially arranged on its sidewall. A first screw 13, parallel to the axial direction of the first locking ring 12, is threaded onto the fine-tuning lever 502, and the nut of the first screw 13 engages with the first groove. Similarly, the second locking ring 14 has multiple second grooves circumferentially arranged on its sidewall. A second screw 15, parallel to the axial direction of the second locking ring 14, is threaded onto the planetary gear 92, and the nut of the second screw 15 engages with the second groove. The arrangement of the first screw 13 and the second screw 15 prevents the first locking ring 12 and the second locking ring 14 from rotating under vibration or other external forces.
[0044] Any adaptive changes made according to actual needs are within the protection scope of this utility model.
[0045] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A fiber optic positioner, characterized in that, The device includes a base and an adjustment plate. The base has a receiving cavity for accommodating the adjustment plate. Both the base and the adjustment plate have mounting holes for installing fiber optic adapters. The base has a coarse adjustment component and a fine adjustment component, which are used to adjust the position of the adjustment plate radially in the mounting holes. The coarse adjustment assembly includes a coarse adjustment screw, which is threadedly connected to the base, and the inner end of the coarse adjustment screw extends into the receiving cavity and abuts against the side wall of the adjustment plate; The fine-tuning assembly includes a fine-tuning lever and a fine-tuning screw. One end of the fine-tuning lever is threadedly connected to the coarse-tuning screw, the fine-tuning screw is threadedly connected to the base, and the inner end of the fine-tuning screw is connected to the other end of the fine-tuning lever, which can drive the coarse-tuning screw to rotate. A first elastic element is also provided between the base and the adjusting plate. The elastic force of the first elastic element on the adjusting plate is parallel to the axial direction of the coarse adjustment screw, and is used to provide a restoring force to the adjusting plate.
2. The fiber optic locator according to claim 1, characterized in that, The inner end of the fine-tuning screw abuts against one side wall of the end of the fine-tuning lever; the fiber optic positioner also includes a fine-tuning spring assembly, which includes an abutment post and a compression spring. The compression spring is disposed in the base, one end of the abutment post abuts against the compression spring, and the other end abuts against the other side wall of the end of the fine-tuning lever.
3. The fiber optic locator according to claim 2, characterized in that, It includes at least two sets of the coarse adjustment components, the fine adjustment components, and the fine adjustment spring-off components, which respectively adjust the position of the adjustment plate in the X and Y directions.
4. The fiber optic positioner according to claim 3, characterized in that, The first elastic element is a first tension spring.
5. The fiber optic positioner according to any one of claims 1-4, characterized in that, It also includes a rear seat fixedly connected to the base, the rear seat being provided with a central gear and at least three planetary gears meshing with the central gear, the central gear being coaxial with the center line of the adjustment plate, the planetary gears being threadedly connected to a Z-axis adjusting screw, the axis of the Z-axis adjusting screw being parallel to the axis of the mounting hole, and the end of the Z-axis adjusting screw being connected to the end face of the adjustment plate.
6. The fiber optic locator according to claim 5, characterized in that, At least one of the Z-axis adjusting screws is provided with an adjusting knob, and the adjusting knob is provided with a plurality of countersunk grooves spaced apart along its circumference. A fastening bolt is provided in the countersunk groove, the end of the fastening bolt is fixedly connected to the planetary gear, and the nut of the fastening bolt abuts against the countersunk groove.
7. The fiber optic positioner according to claim 6, characterized in that, The end of the Z-axis adjusting screw abuts against the end face of the adjusting plate. A second tension spring is also provided between the adjusting plate and the base. The tension direction of the second tension spring is parallel to the axial direction of the Z-axis adjusting screw, and is used to provide a restoring force to the adjusting plate.
8. The fiber optic locator according to claim 7, characterized in that, Multiple screw sleeves are fixed on the base, and the screw sleeves are threadedly connected to the fine adjustment screw, the coarse adjustment screw, and the Z-axis adjustment screw, respectively.
9. The fiber optic locator according to claim 8, characterized in that, The coarse adjustment screw is fitted with a first open wave washer and threadedly connected to a first locking ring, the first open wave washer being located between the first locking ring and the fine adjustment lever; the Z-axis adjustment screw is fitted with a second open wave washer and threadedly connected to a second locking ring, the second open wave washer being located between the second locking ring and the planetary gear.
10. The fiber optic locator according to claim 9, characterized in that, The first locking ring has a plurality of first grooves circumferentially arranged on its sidewall, and the fine-tuning lever is also threaded with a first screw parallel to the axial direction of the first locking ring, the nut of the first screw engaging with the first groove; the second locking ring has a plurality of second grooves circumferentially arranged on its sidewall, and the planetary gear is also threaded with a second screw parallel to the axial direction of the second locking ring, the nut of the second screw engaging with the second groove.