Universal three-degree-of-freedom optical adjustment stand

Abstract

The application discloses a general three-freedom-degree optical adjusting frame, which comprises a mirror seat and an adjusting frame, wherein the adjusting frame is composed of a driving assembly and a measuring and adjusting assembly; the measuring and adjusting assembly is provided with a V-shaped groove at one end, and the lower end of the mirror seat is embedded into the V-shaped groove; the driving assembly is detachably connected with the measuring and adjusting assembly in a transmission mode, and is used for driving the measuring and adjusting assembly to drive the mirror seat to realize translation, deflection and lifting; a magnetic attraction assembly is detachably connected with the side end of the adjusting frame, another adjusting frame can be quickly connected through the magnetic attraction assembly, and the side end of the mirror seat is embedded into the V-shaped groove on the other adjusting frame, so that the adjusting dimension of the mirror seat is increased. The adjusting dimension can be quickly expanded without disassembling the original adjusting frame, the complicated operation of stacking and reassembling the adjusting frame in the height direction is avoided, and the efficiency and flexibility of optical assembly and adjustment are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of optical equipment technology and relates to a general-purpose three-degree-of-freedom optical adjustment frame. Background Technology

[0002] Optical adjustment frames are used to adjust the position of optical components to correct optical path deviations and are widely used in various optical systems. Currently, most common optical adjustment frames are fixed-degree-of-freedom products, such as three-degree-of-freedom or five-degree-of-freedom frames. Their adjustment dimensions are determined at the factory. When users need to increase the adjustment dimensions during experiments (e.g., expanding from three to five degrees of freedom), existing solutions only allow stacking multiple adjustment frames with different degrees of freedom along the Z-axis, requiring the frame to be disassembled and reassembled. This cumbersome operation significantly reduces practical efficiency. Furthermore, because the degrees of freedom are fixed for each model of adjustment frame, it is impossible to quickly increase the adjustment dimensions without disassembling the original frame, becoming a major bottleneck restricting the flexibility of optical assembly. Therefore, there is an urgent need for an optical adjustment frame structure that can quickly expand the degrees of freedom without disassembling the original frame. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a universal three-degree-of-freedom optical adjustment frame. This frame achieves translation, deflection, and elevation of the lens mount through a single drive device. Furthermore, another universal three-degree-of-freedom optical adjustment frame with the same structure can be installed on the side to expand the lens mount's adjustment degrees of freedom (deflection becomes pitch, elevation becomes translation), making it a five-degree-of-freedom adjustment frame. This process does not require disassembling the original lens mount and is simple. This addresses the technical problem mentioned in the background art, where existing optical adjustment frames have fixed degrees of freedom, making it impossible to quickly expand the adjustment dimensions without disassembling the original lens mount, resulting in cumbersome optical path assembly and adjustment operations, poor flexibility, and low efficiency.

[0004] The objective of this invention can be achieved through the following technical solutions: A universal three-degree-of-freedom optical adjustment frame includes a lens base and an adjustment frame. The adjustment frame consists of a drive assembly and a measurement and adjustment assembly. One end of the measurement and adjustment assembly has a V-groove, and the lower end of the lens base is embedded in the V-groove. The drive assembly is detachably connected to the measurement and adjustment assembly, and the drive assembly is used to drive the measurement and adjustment assembly to move the lens base in translation, deflection, and lifting. A magnetic suction assembly is detachably connected to the side end of the adjustment frame, and the magnetic suction assembly is used to detachably connect to another set of adjustment frames. The side end of the lens base is embedded in a V-groove on the other set of adjustment frames to increase the adjustment dimensions of the lens base.

[0005] By embedding the lower end of the lens mount into the V-groove of one end of the measurement and adjustment component, and setting a magnetic component on the side of the adjustment frame, another set of adjustment frames can be detachably connected using the magnetic component. At the same time, the side of the lens mount is embedded into the V-groove on the other set of adjustment frames. Thus, the adjustment dimensions of the lens mount can be quickly increased without disassembling the original frame. This avoids the cumbersome operation of stacking and reassembling multi-degree-of-freedom adjustment frames in the height direction and disassembling and reassembling the frames in the prior art, which significantly improves the efficiency and flexibility of optical assembly and adjustment. By having the bottom and side of the lens mount cooperate with the V-groove of the two sets of adjustment frames respectively, side mounting can be achieved without interference, ensuring the motion accuracy and stability of multi-dimensional adjustment.

[0006] Preferably, the measuring and adjusting assembly includes an adjusting base, a drive ring, and a lifting rotating seat. The V-groove is located at the end of the lifting rotating seat away from the adjusting base. An annular block is fixed to the top of the adjusting base, and the drive ring is rotatably fitted onto the annular block. The lifting rotating seat is installed on the top of the drive ring by a plurality of third locking bolts. The lifting rotating seat has second arc-shaped holes at both ends, and the third locking bolts pass through the corresponding second arc-shaped holes and are threadedly connected to the drive ring. Four rectangular mounting sleeves are fixed on the lifting and rotating base. Adjusting bolts are slidably inserted inside the mounting sleeves. The lower end of the adjusting bolt passes through a sliding hole on the lifting and rotating base and is threadedly connected to the adjusting base. A spring is sleeved on the rod of the adjusting bolt, and the two ends of the spring abut against the head of the adjusting bolt and the annular boss on the inner wall of the mounting sleeve, respectively. The top of the adjusting base is fixed with a cylinder located inside the annular block. The cylinder and the annular block are concentric. A lifting ring located inside the annular block is rotatably fitted on the cylinder. The lifting ring has two symmetrical oblique holes on its side wall. Two guide pins are fixed on the side wall of the cylinder and extend into the corresponding oblique holes. Two symmetrical function switching blocks are slidably arranged on the drive ring. The side wall of the annular block has two symmetrical notches. The two function switching blocks pass through the corresponding notches and cooperate to clamp or release the lifting ring.

[0007] Preferably, the magnetic suction assembly includes an L-shaped conversion magnetic suction base and several magnetic strips, the magnetic strips being fixed on the side of the adjustment base away from the drive assembly, and the conversion magnetic suction base being magnetically connected to the several magnetic strips.

[0008] The magnetic assembly consists of an L-shaped conversion magnetic base and several magnetic strips, enabling quick connection and easy assembly / disassembly without tools. The L-shaped structure facilitates lateral positioning and expansion, improving assembly efficiency.

[0009] Preferably, the drive assembly includes a connecting seat, a rack seat, a drive rack, and a piezoelectric ceramic actuator. One end of the rack seat is detachably fixed to one end of the adjusting base by a first fixing screw. The rack seat is slidably mounted on the connecting seat. The drive rack is slidably mounted on the rack seat. The piezoelectric ceramic actuator is slidably disposed at one end of the connecting seat, and its telescopic end abuts against one end of the rack seat. A first set screw is threaded onto the connecting seat. One end of the first set screw abuts against one end of the piezoelectric ceramic actuator. Rotating the first set screw drives the piezoelectric ceramic actuator to move the rack seat horizontally. One end of the drive ring is provided with an arc-shaped gear segment, and a second set screw is threaded on the rack seat. One end of the second set screw abuts against one end of the drive rack. Rotating the second set screw is used to push the drive rack closer to the arc-shaped gear segment and engage it.

[0010] Preferably, the connecting seat includes a connecting plate, an actuator mounting seat, and a limiting seat. The actuator mounting seat and the limiting seat are respectively fixed to both ends of the connecting plate by bolts. The first set screw is installed on the actuator mounting seat, and a third set screw is threaded on the limiting seat. Rotating the third set screw allows one end of it to abut against the end of the rack seat away from the piezoelectric ceramic actuator. A slider is fixed to the bottom of both the piezoelectric ceramic actuator and the rack seat, and a dovetail groove is provided on the top of the connecting plate for the slider to be embedded.

[0011] Preferably, a first ranging sensor is fixed on the limiting seat, and the first ranging sensor is used to calculate the translation distance of the rack seat; A second distance sensor is fixed on the adjustment base, and the second distance sensor is used to calculate the rotation angle of the drive ring.

[0012] The system is equipped with a first ranging sensor and a second ranging sensor to measure the translation distance of the rack seat and the rotation angle of the drive ring, respectively. This allows for the acquisition of adjustment parameters in real time, providing data support for rapid reset and optical system replication, thereby improving the repeatability of adjustment and system stability.

[0013] Preferably, the rack seat has a first guide hole extending along the sliding direction of the rack seat, and the rack seat has a first locking bolt, the lower end of the first locking bolt passing through the first guide hole and threadedly connected to the threaded groove of the connecting plate; A first tension spring is connected between the drive rack and the rack seat; The piezoelectric ceramic actuator consists of a cylindrical piezoelectric actuator and an actuator base. The cylindrical piezoelectric actuator is fixed to one end of the actuator base, and a second tension spring connects the actuator base and the actuator mounting base.

[0014] Preferably, the drive ring further includes two symmetrically arranged mounting blocks and an arc-shaped block, as well as a second locking bolt. The two ends of the mounting blocks are respectively fixed to one end of the arc-shaped gear segment and one end of the arc-shaped block by bolts. The arc-shaped block has a first arc-shaped hole, and one end of the second locking bolt passes through the first arc-shaped hole and is threaded into the threaded groove of the adjusting base. The mounting block has a drive groove at one end near the lifting ring for the function switching block to be inserted. A fourth set screw is threaded onto the mounting block, and one end of the fourth set screw abuts against the function switching block. A third tension spring connects the mounting block to the corresponding function switching block. A fifth set screw is threaded onto the annular block. Tightening the fifth set screw will cause one end of it to abut against the side wall of the lifting ring.

[0015] Preferably, the lens mount has a mounting hole, in which a lens barrel is embedded. The top and side walls of the lens mount both have threaded holes that communicate with the mounting hole. A sixth set screw is threaded into the threaded hole, and one end of the sixth set screw extends into the mounting hole and abuts against the outer wall of the lens barrel.

[0016] The lens barrel is designed to be replaceable and secured with a sixth set screw. This design allows for the adaptation to different optical element sizes, improving the versatility and adaptability of the adjustment frame, and making lens barrel replacement convenient.

[0017] Preferably, the bottom and side of the mirror base have arc-shaped protrusions, which are embedded in the corresponding V-shaped grooves. A seventh set screw is threaded onto the lifting and rotating seat, and one end of the seventh set screw extending into the V-shaped groove abuts against the side wall of the arc-shaped protrusion.

[0018] The main technical effects of this invention are reflected in the following aspects: 1. This invention adopts a universal three-degree-of-freedom optical adjustment frame, with a magnetic suction component set on the side of the adjustment frame and a V-groove on the adjustment frame. The side and bottom of the lens mount are provided with arc-shaped protrusions. By magnetically connecting another set of adjustment frames, the three-degree-of-freedom adjustment frame can be quickly expanded into a five-dimensional adjustment frame without disassembling the original frame, avoiding stacking and reassembly, and significantly improving the efficiency and flexibility of optical adjustment. At the same time, the interference problem when adding from the side is solved by the arc-shaped protrusions on the bottom and side of the lens mount cooperating with the V-groove.

[0019] 2. The translation, deflection and lifting adjustments of the three-dimensional adjustment frame are all achieved by the same drive component through the function switching block and other structures, which reduces the number of drive devices and simplifies the overall structure; the drive component and the measurement and adjustment component are detachably connected, and after adjustment, they can be removed and used in other adjustment frames, reducing the overall volume of the adjustment frame, improving interchangeability and reusability, and reducing repeated purchase costs.

[0020] 3. By setting up multiple probe-type laser rangefinders and piezoelectric ceramic actuators, the rotation angle and translation distance of the mirror mount can be accurately measured, and micron-level displacement adjustment can be achieved. When the mirror mount shifts due to factors such as vibration, the sensors and piezoelectric ceramic actuators can be linked to quickly reset, thereby improving the stability of the optical system and facilitating the rapid reproduction or replication of the same optical system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the combination mode of an embodiment of the present invention; Figure 2 This is a schematic diagram of the assembly structure of two sets of adjustable frames and magnetic components according to an embodiment of the present invention; Figure 3 This is a structural schematic diagram of an embodiment of the present invention; Figure 4 This is an exploded structural diagram of the measurement and adjustment component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the adjustment base according to an embodiment of the present invention; Figure 6 This is an exploded structural diagram of the driving component according to an embodiment of the present invention; Figure 7 This is a partial exploded structural diagram of the driving component according to an embodiment of the present invention; Figure 8 This is an exploded structural diagram of the drive ring according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the lens mount and lens barrel according to an embodiment of the present invention; Figure 10 This is an assembly cross-sectional view of the mounting sleeve, adjusting bolt, and spring according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram: 1. Adjustable frame; 11. Drive assembly; 12. Measurement and adjustment assembly; 13. Magnetic assembly; 131. Magnetic conversion base; 132. Magnetic strip; 2. Adjusting base; 21. Lifting rotating seat; 211. V-groove; 212. Third locking bolt; 213. Second arc-shaped hole; 214. Seventh set screw; 215. Sliding hole; 22. Annular block; 221. Fifth set screw; 222. Notch; 23. Cylinder; 231. Guide post; 24. Lifting ring; 241. Angled hole; 25. Second distance sensor; 26. Limiting block; 27. Second guide hole; 271. Fourth locking bolt; 3. Drive ring; 31. Function switching block; 32. Arc-shaped gear segment; 33. Mounting block; 331. Drive groove; 332. Fourth set screw; 333. Third tension spring; 34. Arc-shaped block; 341. First arc-shaped hole; 35. Second locking bolt; 4. Connecting seat; 41. Piezoelectric ceramic actuator; 411. Cylindrical piezoelectric actuator; 412. Actuator base; 42. First fixing screw; 43. First set screw; 44. Connecting plate; 441. Dovetail groove; 45. Actuator mounting seat; 451. Second tension spring; 46. Limiting seat; 461. Third set screw; 462. Slider; 463. First ranging sensor; 47. Limiting groove; 5. Rack seat; 51. Drive rack; 52. Second set screw; 53. First guide hole; 54. First locking bolt; 55. First tension spring; 56. First reset hole; 561. First stop bar; 6. Lens mount; 61. Mounting hole; 62. Lens barrel; 63. Sixth set screw; 64. Arc-shaped protrusion; 7. Mounting sleeve; 71. Adjusting bolt; 711. Spring; 72. Annular boss. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1-3 As shown, a general three-degree-of-freedom optical adjustment frame includes a lens mount 6 and an adjustment frame 1. The adjustment frame 1 consists of a drive assembly 11 and a measurement adjustment assembly 12. One end of the measurement adjustment assembly 12 is provided with a V-groove 211, and the lower end of the lens mount 6 is embedded in the V-groove 211. The drive assembly 11 and the measurement adjustment assembly 12 are detachably connected. The drive assembly 11 is used to drive the measurement adjustment assembly 12 to move the lens mount 6 to achieve translation, deflection, and lifting. A magnetic suction assembly 13 is detachably connected to the side end of the adjustment frame 1. The magnetic suction assembly 13 is used to detachably connect another set of adjustment frames 1. The side end of the lens mount 6 is embedded in the V-groove 211 provided on the other set of adjustment frames 1 to increase the adjustment dimensions of the lens mount 6.

[0025] like Figure 4-5 As shown in Figure 10, the measuring adjustment assembly 12 includes an adjustment base 2, a drive ring 3, and a lifting rotating seat 21. A V-groove 211 is provided at the end of the lifting rotating seat 21 away from the adjustment base 2. An annular block 22 is fixed on the top of the adjustment base 2. The drive ring 3 is rotatably fitted onto the annular block 22. The lifting rotating seat 21 is installed on the top of the drive ring 3 by a number of third locking bolts 212. The lifting rotating seat 21 has second arc-shaped holes 213 at both ends. The third locking bolts 212 pass through the corresponding second arc-shaped holes 213 and are threadedly connected to the drive ring 3. Four rectangular mounting sleeves 7 are fixed on the lifting and rotating base 21. Adjusting bolts 71 are slidably inserted inside the mounting sleeves 7. The lower end of the adjusting bolts 71 passes through the sliding hole 215 on the lifting and rotating base 21 and is threadedly connected to the adjusting base 2. A spring 711 is sleeved on the rod of the adjusting bolt 71. The two ends of the spring 711 abut against the head of the adjusting bolt 71 and the annular boss 72 on the inner wall of the mounting sleeve 7, respectively. The top of the adjusting base 2 is fixed with a cylinder 23 located inside the annular block 22. The cylinder 23 and the annular block 22 are concentric. A lifting ring 24 located inside the annular block 22 is rotatably fitted on the cylinder 23. The side wall of the lifting ring 24 has two symmetrical oblique holes 241. Two guide posts 231 that extend into the corresponding oblique holes 241 are fixed on the side wall of the cylinder 23. Two symmetrical function switching blocks 31 are slidably arranged on the driving ring 3. The side wall of the annular block 22 has two symmetrical notches 222. The two function switching blocks 31 pass through the corresponding notches 222 and cooperate to clamp or release the lifting ring 24. A second distance sensor 25 is fixed on the adjustment base 2. The second distance sensor 25 is used to calculate the rotation angle of the drive ring 3. The second distance sensor 25 is used when the mirror base 6 deflects and rises (first rises and then deflects). After the rise and fall are completed, the rotation angle is recorded, the deflection angle is adjusted, and the second rotation angle is recorded.

[0026] like Figure 3 , 4 As shown in Figure 8, the drive ring 3 also includes two symmetrically arranged mounting blocks 33, an arc-shaped block 34, and a second locking bolt 35. The two ends of the mounting block 33 are respectively fixed to one end of the arc-shaped gear segment 32 and one end of the arc-shaped block 34 by bolts. The arc-shaped block 34 has a first arc-shaped hole 341. One end of the second locking bolt 35 passes through the first arc-shaped hole 341 and is threaded into the threaded groove of the adjusting base 2. After the drive ring 3 has rotated, the second locking bolt 35 is tightened, thereby restricting the drive ring 3 from deflecting. The mounting block 33 has a drive groove 331 at one end near the lifting ring 24 for the function switching block 31 to be embedded. A fourth set screw 332 is threaded on the mounting block 33. One end of the fourth set screw 332 abuts against the function switching block 31. By rotating the fourth set screw 332, the function switching block 31 abuts against the lifting ring 24. A third tension spring 333 is connected between the mounting block 33 and the corresponding function switching block 31. The third tension spring 333 is used to drive the function switching block 31 to reset. A fifth set screw 221 is threaded onto the annular block 22. Tightening the fifth set screw 221 will cause one end of it to abut against the side wall of the lifting ring 24, thereby restricting the rotation of the lifting ring 24.

[0027] When adjusting the lifting height: Loosen the third locking bolt 212 to allow the lifting rotating seat 21 to move axially relative to the drive ring 3; at this time, the adjusting bolt 71 remains threadedly connected to the adjusting base 2, but is not locked. The spring 711 applies elastic constraint to the lifting rotating seat 21 to limit its deviation or swaying during lifting, but does not restrict its axial lifting. Tighten the fourth set screw 332 to push the function switching block 31 through the notch 222 and clamp the lifting ring 24. Rotate the drive ring 3, which passes through the mounting block 33. The function switching block 31 and the lifting ring 24 rotate around the cylinder 23. The lifting ring 24 converts the rotational motion into axial lifting motion with the cooperation of the inclined hole 241 and the guide post 231, thereby pushing the lifting rotating seat 21 and the mirror seat 6 to rise and fall. After the lifting and falling is in place, tighten the third locking bolt 212 to fix the lifting rotating seat 21 and the drive ring 3. Tighten the fifth set screw 221 so that one end of it abuts against the side wall of the lifting ring 24, thereby restricting the rotation of the lifting ring 24. At this time, one end of the lifting ring 24 always abuts against the lifting rotating seat 21. After lifting is completed, deflection adjustment is performed: First, unscrew and remove the adjusting bolt 71 to disconnect the connection between the lifting rotating seat 21 and the adjusting base 2; keep the third locking bolt 212 locked to fix the lifting rotating seat 21 and the drive ring 3 as one unit; loosen the fourth set screw 332, and the function switching block 31 will reset under the action of the third tension spring 333 and release the lifting ring 24; rotate the drive ring 3, which directly drives the lifting rotating seat 21 and the mirror base 6 to rotate, thereby achieving deflection adjustment. After the deflection adjustment is in place, tighten the second locking bolt 35 to lock the drive ring 3 to the adjusting base 2 to prevent it from deflecting.

[0028] Reference Figure 4 The magnetic suction assembly 13 includes an L-shaped conversion magnetic suction base 131 and several magnetic strips 132. The several magnetic strips 132 are fixed on the side of the adjustment base 2 away from the drive assembly 11. The conversion magnetic suction base 131 is magnetically connected to the several magnetic strips 132.

[0029] like Figure 1 , 9 As shown, the lens mount 6 has a mounting hole 61, and a lens barrel 62 is embedded in the mounting hole 61. The top and side walls of the lens mount 6 have threaded holes that communicate with the mounting hole 61. A sixth set screw 63 is threaded into the threaded hole, and one end of the sixth set screw 63 extends into the mounting hole 61 and abuts against the outer wall of the lens barrel 62.

[0030] The bottom and side of the mirror base 6 have arc-shaped protrusions 64, which are embedded in the corresponding V-shaped grooves 211. The lifting rotating seat 21 is threaded with a seventh set screw 214, and one end of the seventh set screw 214 extends into the V-shaped groove 211 and abuts against the side wall of the arc-shaped protrusion 64.

[0031] like Figure 5-7As shown, the drive assembly 11 includes a connecting seat 4, a rack seat 5, a drive rack 51, and a piezoelectric ceramic actuator 41. One end of the rack seat 5 is detachably fixed to one end of the adjusting base 2 by a first fixing screw 42. One end of the adjusting base 2 has a limiting block 26. One end of the connecting seat 4 has a limiting groove 47 for the limiting block 26 to be inserted. The rack seat 5 is slidably mounted on the connecting seat 4. The drive rack 51 is slidably mounted on the rack seat 5. The piezoelectric ceramic actuator 41 is slidably disposed on one end of the connecting seat 4 and its telescopic end abuts against one end of the rack seat 5. A first set screw 43 is threaded on the connecting seat 4. One end of the first set screw 43 abuts against one end of the piezoelectric ceramic actuator 41. Rotating the first set screw 43 drives the piezoelectric ceramic actuator 41 to move the rack seat 5. Driving the piezoelectric ceramic actuator 41 can achieve fine translation adjustment of the rack seat 5. When one end of the rack seat 5 is fixedly connected to the adjusting base 2 by the first fixing screw 42, rotating the first set screw 43 can drive the piezoelectric ceramic actuator 41 to move the rack seat 5, and the rack seat 5 drives the adjusting base 2 to move, thereby realizing the translation adjustment of the mirror seat 6. The adjustment base 2 is provided with a second guide hole 27 extending along the sliding direction of the rack seat 5. The second guide hole 27 is provided with a fourth locking bolt 271. The adjustment base 2 is installed on the optical platform through the fourth locking bolt 271. When it is necessary to move the adjustment lens seat 6, the fourth locking bolt 271 can be loosened. One end of the drive ring 3 is provided with an arc-shaped gear section 32, and a second set screw 52 is threaded on the rack seat 5. One end of the second set screw 52 abuts against one end of the drive rack 51. Rotating the second set screw 52 is used to push the drive rack 51 closer to the arc-shaped gear section 32 and engage it.

[0032] like Figure 6-7 As shown, the connecting seat 4 includes a connecting plate 44, an actuator mounting seat 45, and a limiting seat 46. The actuator mounting seat 45 and the limiting seat 46 are respectively fixed to both ends of the connecting plate 44 by bolts. A first set screw 43 is installed on the actuator mounting seat 45, and a third set screw 461 is threaded on the limiting seat 46. Rotating the third set screw 461 allows one end of it to abut against the end of the rack seat 5 away from the piezoelectric ceramic actuator 41. The bottoms of both the piezoelectric ceramic actuator 41 and the rack seat 5 are fixed. A slider 462 is fixed, and a dovetail groove 441 for the slider 462 to be embedded is opened on the top of the connecting plate 44. A first distance sensor 463 is fixed on the limiting seat 46. The first distance sensor 463 is used to calculate the translation distance of the rack seat 5. The first distance sensor 463 is used when the mirror seat 6 is translated. After the mirror seat 6 finishes translation and is locked, the first distance sensor 463 records its displacement distance and drives the rack 51 back to its original position, leaving room for deflection adjustment and lifting adjustment.

[0033] like Figure 3 , 6 As shown, the rack seat 5 has a first guide hole 53 extending along the sliding direction of the rack seat 5, and the rack seat 5 has a first locking bolt 54. The lower end of the first locking bolt 54 passes through the first guide hole 53 and is threaded into the threaded groove of the connecting plate 44. Both the rack seat 5 and the drive rack 51 have two first reset holes 56. The two first reset holes 56 on the rack seat 5 are connected to the two first reset holes 56 on the drive rack 51. A first tension spring 55 is embedded in the first reset hole 56. A first stop rod 561 is fixed at both ends of the first tension spring 55. The two first stop rods 561 abut against the drive rack 51 and the rack seat 5 respectively. The first tension spring 55 is used to drive the drive rack 51 to reset. The piezoelectric ceramic actuator 41 consists of a cylindrical piezoelectric actuator 411 and an actuator base 412, with the cylindrical piezoelectric actuator 411 fixed to one end of the actuator base 412.

[0034] Both the actuator mounting base 45 and the actuator base 412 have two second reset holes. The two second reset holes on the actuator mounting base 45 are connected to the two second reset holes on the actuator base 412. A second tension spring 451 is embedded in the second reset hole. A second stop rod is fixed at both ends of the second tension spring 451. The two second stop rods abut against the actuator mounting base 45 and the actuator base 412 respectively. The second tension spring 451 is used to drive the actuator base 412 to reset.

[0035] The adjustment operation of this invention is as follows: Translation adjustment: Tighten the first fixing screw 42 to fix the rack seat 5 to the adjusting base 2; loosen the fourth locking bolt 271 to allow the adjusting base 2 to move relative to the optical platform; loosen the third set screw 461 so that one end moves away from the rack seat 5, leaving space for the rack seat 5 to move; rotate the first set screw 43 or drive the piezoelectric ceramic actuator 41 to drive the rack seat 5 and the adjusting base 2 to translate along the guide direction, thereby realizing the translation adjustment of the mirror base 6; After the object is moved into position, tighten the fourth locking bolt 271 to lock the adjusting base 2 onto the optical platform; rotate the third set screw 461 so that one end of it abuts against the end of the rack seat 5 away from the piezoelectric ceramic actuator 41 to fix the rack seat 5; then loosen the first fixing screw 42 to disconnect the rack seat 5 from the adjusting base 2, in preparation for subsequent lifting and rotation operations.

[0036] Lifting and lowering adjustment: Keep the fourth locking bolt 271 locked; loosen the second locking bolt 35 so that the drive ring 3 can rotate relative to the adjusting base 2; rotate the second set screw 52 to push the drive rack 51 to mesh with the arc gear segment 32; loosen the third locking bolt 212 so that the lifting rotating seat 21 can move axially relative to the drive ring 3; tighten the fourth set screw 332 to push the function switching block 31 through the notch 222 and clamp the lifting ring 24; at this time, the adjusting bolt 71 remains threadedly connected to the adjusting base 2 but is not locked, and the spring 711 applies elastic constraint to the lifting rotating seat 21 to limit its deviation or swaying during the lifting and lowering process, but does not limit its axial lifting and lowering.

[0037] Subsequently, loosen the first set screw 43 to reset the piezoelectric ceramic actuator 41; rotate the third set screw 461 so that one end of it abuts against the end of the rack seat 5 away from the piezoelectric ceramic actuator 41 and pushes the rack seat 5 and the piezoelectric ceramic actuator 41 to reset, providing the correct initial position for the lifting drive. Rotate the first set screw 43 or drive the piezoelectric ceramic actuator 41, and drive the drive ring 3 to rotate through the rack seat 5 and drive rack 51. The function switching block 31 drives the lifting ring 24 to rotate around the cylinder 23. With the cooperation of the inclined hole 241 and the guide post 231, the rotational motion is converted into lifting motion, which pushes the lifting rotating seat 21 and the mirror seat 6 to rise and fall. After the lifting position is reached, tighten the third locking bolt 212 to fix the lifting rotating seat 21 to the drive ring 3; tighten the fifth set screw 221 so that one end of it abuts against the side wall of the lifting ring 24 to restrict the rotation of the lifting ring 24; tighten the second locking bolt 35 to lock the drive ring 3 to the adjusting base 2, thus completing the lifting and locking.

[0038] Rotation adjustment: First, unscrew and remove the adjusting bolt 71 to disconnect the connection between the lifting rotating seat 21 and the adjusting base 2; keep the third locking bolt 212 locked so that the lifting rotating seat 21 and the drive ring 3 are fixed together; loosen the second locking bolt 35 so that the drive ring 3 can rotate relative to the adjusting base 2; loosen the fourth set screw 332, and the function switching block 31 resets and releases the lifting ring 24 under the action of the third tension spring 333; rotate the second set screw 52 to push the drive rack 51 to mesh with the arc gear segment 32; rotate the first set screw 43 or drive the piezoelectric ceramic actuator 41 to drive the drive ring 3 to rotate through the rack seat 5 and the drive rack 51. The drive ring 3 directly drives the lifting rotating seat 21 and the mirror seat 6 to rotate, thereby realizing rotation adjustment.

[0039] After rotating to the correct position, tighten the second locking bolt 35 to lock the drive ring 3 to the adjusting base 2 to prevent it from deflecting, thus completing the rotation locking. After completing the above operations, the drive assembly 11 is not removed.

[0040] When an additional adjustment dimension is required, place another set of adjustment frames 1 to the side of the original adjustment frame 1. The magnetic components 13 on the side of the adjustment frame 1 attract each other to achieve quick pre-fixation. At the same time, the arc-shaped protrusion 64 on the side of the lens base 6 is inserted into the corresponding V-groove 211 on the newly added adjustment frame 1. Then, tighten the seventh set screw 214 on the lifting rotating seat 21 to press against the side wall of the arc-shaped protrusion 64, thus completing the installation. The entire process does not require disassembling the original frame or the original adjustment frame 1. When the height of the lens base 6 needs to be adjusted, the seventh set screw 214 of the newly added adjustment frame 1 can be loosened to leave sufficient adjustment space.

[0041] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A universal three-degree-of-freedom optical adjustment frame, comprising a lens mount (6) and an adjustment frame (1), characterized in that: The adjustable frame (1) is composed of a drive assembly (11) and a measurement adjustment assembly (12); one end of the measurement adjustment assembly (12) is provided with a V-groove (211), and the lower end of the lens mount (6) is embedded in the V-groove (211); the drive assembly (11) and the measurement adjustment assembly (12) are detachably connected, and the drive assembly (11) is used to drive the measurement adjustment assembly (12) to drive the lens mount (6) to achieve translation, deflection and lifting; the side end of the adjustable frame (1) is detachably connected with a magnetic suction assembly (13), and the magnetic suction assembly (13) is used to detachably connect another set of adjustable frames (1), and the side end of the lens mount (6) is embedded in the V-groove (211) provided on the other set of adjustable frames (1) to increase the adjustment dimension of the lens mount (6).

2. The universal three-degree-of-freedom optical adjustment frame according to claim 1, characterized in that, The measuring adjustment assembly (12) includes an adjustment base (2), a drive ring (3), and a lifting rotating seat (21). The V-groove (211) is located at the end of the lifting rotating seat (21) away from the adjustment base (2). An annular block (22) is fixed on the top of the adjustment base (2). The drive ring (3) is rotatably fitted onto the annular block (22). The lifting rotating seat (21) is installed on the top of the drive ring (3) by a number of third locking bolts (212). The lifting rotating seat (21) has second arc-shaped holes (213) at both ends. The third locking bolts (212) pass through the corresponding second arc-shaped holes (213) and are threaded to the drive ring (3). Four rectangular mounting sleeves (7) are fixed on the lifting rotating seat (21). An adjusting bolt (71) is slidably inserted inside the mounting sleeve (7). The lower end of the adjusting bolt (71) passes through the sliding hole (215) on the lifting rotating seat (21) and is threadedly connected to the adjusting base (2). A spring (711) is sleeved on the rod of the adjusting bolt (71). The two ends of the spring (711) abut against the head of the adjusting bolt (71) and the annular boss (72) on the inner wall of the mounting sleeve (7), respectively. The top of the adjusting base (2) is fixed with a cylinder (23) located inside the annular block (22). The cylinder (23) and the annular block (22) are arranged with the same center. A lifting ring (24) located inside the annular block (22) is rotatably fitted on the cylinder (23). The lifting ring (24) has two symmetrical oblique holes (241) on its side wall. Two guide posts (231) are fixed on the side wall of the cylinder (23) and extend into the corresponding oblique holes (241). Two symmetrical function switching blocks (31) are slidably arranged on the drive ring (3). The side wall of the annular block (22) has two symmetrical notches (222). The two function switching blocks (31) pass through the corresponding notches (222) and cooperate to clamp or release the lifting ring (24).

3. A universal three-degree-of-freedom optical adjustment frame according to claim 2, characterized in that, The magnetic suction assembly (13) includes an L-shaped conversion magnetic suction base (131) and several magnetic strips (132). Several magnetic strips (132) are fixed on the side of the adjustment base (2) away from the drive assembly (11). The conversion magnetic suction base (131) is magnetically connected to several magnetic strips (132).

4. A universal three-degree-of-freedom optical adjustment frame according to claim 2, characterized in that, The drive assembly (11) includes a connecting seat (4), a rack seat (5), a drive rack (51), and a piezoelectric ceramic actuator (41). One end of the rack seat (5) is detachably fixed to one end of the adjusting base (2) by a first fixing screw (42). The rack seat (5) is slidably mounted on the connecting seat (4). The drive rack (51) is slidably mounted on the rack seat (5). The piezoelectric ceramic actuator (41) is slidably disposed at one end of the connecting seat (4), and its telescopic end abuts against one end of the rack seat (5). The connecting seat (4) is threaded with a first set screw (43). One end of the first set screw (43) abuts against one end of the piezoelectric ceramic actuator (41). Rotating the first set screw (43) is used to drive the piezoelectric ceramic actuator (41) to drive the rack seat (5) to translate. One end of the drive ring (3) is provided with an arc-shaped gear segment (32), and a second set screw (52) is threaded on the rack seat (5). One end of the second set screw (52) abuts against one end of the drive rack (51). Rotating the second set screw (52) is used to push the drive rack (51) closer to the arc-shaped gear segment (32) and engage it.

5. A universal three-degree-of-freedom optical adjustment frame according to claim 4, characterized in that, The connecting seat (4) includes a connecting plate (44), an actuator mounting seat (45), and a limiting seat (46). The actuator mounting seat (45) and the limiting seat (46) are respectively fixed to both ends of the connecting plate (44) by bolts. The first set screw (43) is installed on the actuator mounting seat (45). The limiting seat (46) is threaded with a third set screw (461). Rotating the third set screw (461) can make one end of it abut against the end of the rack seat (5) away from the piezoelectric ceramic actuator (41). The bottom of the piezoelectric ceramic actuator (41) and the rack seat (5) are both fixed with sliders (462). The top of the connecting plate (44) is provided with a dovetail groove (441) for the slider (462) to be embedded.

6. A universal three-degree-of-freedom optical adjustment frame according to claim 5, characterized in that, A first distance sensor (463) is fixed on the limiting seat (46), and the first distance sensor (463) is used to calculate the translation distance of the rack seat (5); A second distance sensor (25) is fixed on the adjustment base (2), and the second distance sensor (25) is used to calculate the rotation angle of the drive ring (3).

7. A universal three-degree-of-freedom optical adjustment frame according to claim 5, characterized in that, The rack seat (5) is provided with a first guide hole (53) extending along the sliding direction of the rack seat (5), and the rack seat (5) is provided with a first locking bolt (54). The lower end of the first locking bolt (54) passes through the first guide hole (53) and is threaded into the thread groove of the connecting plate (44). A first tension spring (55) is connected between the drive rack (51) and the rack seat (5). The piezoelectric ceramic actuator (41) consists of a cylindrical piezoelectric actuator (411) and an actuator base (412). The cylindrical piezoelectric actuator (411) is fixed to one end of the actuator base (412). A second tension spring (451) is connected between the actuator base (412) and the actuator mounting base (45).

8. A universal three-degree-of-freedom optical adjustment frame according to claim 4, characterized in that, The drive ring (3) also includes two symmetrically arranged mounting blocks (33), an arc-shaped block (34) and a second locking bolt (35). The two ends of the mounting block (33) are respectively fixed to one end of the arc-shaped gear segment (32) and one end of the arc-shaped block (34) by bolts. The arc-shaped block (34) has a first arc-shaped hole (341). One end of the second locking bolt (35) passes through the first arc-shaped hole (341) and is threaded into the threaded groove of the adjusting base (2). The mounting block (33) has a drive groove (331) for the function switching block (31) to be embedded at one end near the lifting ring (24). A fourth set screw (332) is threaded on the mounting block (33), and one end of the fourth set screw (332) abuts against the function switching block (31). A third tension spring (333) is connected between the mounting block (33) and the corresponding function switching block (31). The annular block (22) is threaded with a fifth set screw (221). Tightening the fifth set screw (221) will cause one end of it to abut against the side wall of the lifting ring (24).

9. A universal three-degree-of-freedom optical adjustment frame according to claim 2, characterized in that, The lens mount (6) has a mounting hole (61), and a lens barrel (62) is embedded in the mounting hole (61). The top and side walls of the lens mount (6) are both threaded holes that communicate with the mounting hole (61). A sixth set screw (63) is threaded into the threaded hole. One end of the sixth set screw (63) extends into the mounting hole (61) and abuts against the outer wall of the lens barrel (62).

10. A universal three-degree-of-freedom optical adjustment frame according to claim 9, characterized in that, The bottom and side of the mirror base (6) have arc-shaped protrusions (64), which are embedded in the corresponding V-groove (211). The lifting rotating seat (21) is threaded with a seventh set screw (214), and one end of the seventh set screw (214) extends into the V-groove (211) and abuts against the side wall of the arc-shaped protrusion (64).

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