A michelson moving mirror adjustment frame

Abstract

The utility model relates to interferometer equipment technical field discloses a kind of michelson moving mirror adjusting mirror frame of being adjusted easily, including bottom plate, multiple first sliding slots are opened in bottom plate, second sliding slot is also opened in the bottom plate between two first sliding slots, first micrometer head mounting seat is fixedly connected with the position of second sliding slot near one side of bottom plate, coarse adjustment micrometer head is fixedly connected in first micrometer head mounting seat, coarse adjustment translation plate is movably connected on bottom plate. Coarse adjustment micrometer head is matched with sliding block, first compression spring, can push coarse adjustment translation plate along first sliding slot horizontal coarse adjustment, and fine adjustment micrometer head drives rack to slide in third sliding slot, by rack and pinion engagement, let connecting screw drive fine adjustment translation plate along guide rail fine adjustment, height adjustment micrometer head promotes wedge block, the force of the action of third compression spring makes mirror frame mounting plate vertical adjustment, without long screw rod, greatly reduce volume, reduce processing precision requirement and cost, realize multi-dimension accurate adjustment.

Description

Technical Field

[0001] This utility model relates to the field of interferometer equipment technology, and in particular to an easily adjustable Michelson moving mirror adjustment frame. Background Technology

[0002] The core structure of the Michelson interferometer includes a beam splitter, a fixed mirror, a movable mirror, and an observation screen. Its principle is that a beam of monochromatic light is split into two beams by the beam splitter, reflected by the two mirrors, and then rejoined. Due to the optical path difference, interference occurs, forming alternating bright and dark interference fringes. It is widely used in precision length measurement, spectroscopy research, refractive index determination, and other fields.

[0003] Traditional Michelson interferometers rely on long screw drives for adjusting the moving mirror, which has several limitations. In terms of size, the screw needs to be long enough to cover the adjustment stroke of the moving mirror, resulting in a large space occupied by the adjustment module. This reduces the portability of the instrument and makes it difficult to adapt to the compact layout of multiple laboratory devices. When multiple experiments are conducted simultaneously, the space utilization rate is low. During manufacturing, the linearity accuracy of the long screw directly affects the accuracy of the moving mirror displacement. Small errors can lead to optical path difference deviations and blurred interference fringes. To control errors, high-precision cutting and grinding are required, which also places high demands on materials, significantly increasing manufacturing costs and extending the cycle time. Furthermore, precise calibration of coaxiality and meshing clearance is required during assembly. Disassembly requires disassembling multiple fixed structures and vulnerable parts. Repair often requires replacing the entire component, which is costly and delays the use of the instrument. Utility Model Content

[0004] The purpose of this invention is to provide an easily adjustable Michelson motion lens adjustment frame, which uses a coarse adjustment micrometer head, a fine adjustment micrometer head, and a height adjustment micrometer head to achieve coarse horizontal adjustment, fine adjustment, and height adjustment respectively, replacing the long screw, reducing the size, reducing the difficulty of processing, and simplifying assembly and maintenance, thus effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An easily adjustable Michelson motion lens frame includes a base plate with multiple first grooves. A second groove is also formed in the base plate between two of the first grooves. A first micrometer mounting base is fixedly connected to one side of the base plate near the second groove. A coarse adjustment micrometer is fixedly connected to the first micrometer mounting base. A coarse adjustment plate is movably connected to the base plate. A fine adjustment adapter plate is fixedly connected to one side of the coarse adjustment plate. A third groove is formed in the fine adjustment adapter plate. A connecting port is formed at the top of the third groove. A sliding connection is formed between the third groove and the coarse adjustment plate. The rack and pinion has a fine-tuning micrometer fixedly connected to the front side of the fine-tuning adapter plate, a limit stud threadedly connected to the rear side of the fine-tuning adapter plate relative to the position of the fine-tuning micrometer, a fine-tuning translation plate movably connected to the top of the coarse-tuning translation plate near the position of the fine-tuning adapter plate, a second micrometer mounting seat fixedly connected to one side of the fine-tuning translation plate, a height adjustment micrometer fixedly connected inside the second micrometer mounting seat, a fourth sliding groove opened on the fine-tuning translation plate near the position of the second micrometer mounting seat, a wedge block slidably connected inside the fourth sliding groove, and a frame mounting plate movably connected to the fine-tuning translation plate near the position of the fourth sliding groove.

[0007] As a further preferred embodiment of this utility model, the base plate is fixedly connected to both the front and rear sides, so as to realize the base plate being mounted on the porous base of the interferometer.

[0008] As a further preferred embodiment of this utility model, a plurality of sliders are fixedly connected to the bottom of the coarse adjustment translation plate. The longitudinal cross-section of the sliders is trapezoidal. The coarse adjustment translation plate located between two of the sliders is also provided with an installation groove. An abutment plate is fixedly connected in the installation groove. A guide rail is fixedly connected to the top of the coarse adjustment translation plate. The longitudinal cross-section of the guide rail is also trapezoidal. The sliders are slidably connected in the corresponding first slide groove. The lower end of the abutment plate is inserted into the second slide groove. A first compression spring is engaged between the abutment plate and one side of the second slide groove. After the coarse adjustment translation plate is slidably connected to the base plate by the plurality of sliders, one end of the micrometer screw of the coarse adjustment micrometer head can abut against one side of the abutment plate, thereby cooperating with the first compression spring to realize the coarse adjustment horizontal movement of the coarse adjustment translation plate.

[0009] As a further preferred embodiment of this utility model, a screw connecting block is fixedly connected to the top of the fine adjustment adapter plate near the connection port. A second compression spring is engaged between the limiting stud and the rack. One end of the micrometer screw of the fine adjustment micrometer head abuts against one side of the rack and works with the second compression spring to realize the horizontal movement of the rack in the third slide groove.

[0010] As a further preferred embodiment of this utility model, the bottom of the fine-tuning translation plate is provided with multiple fifth sliding grooves. The fine-tuning translation plate is slidably connected to the guide rail through the fifth sliding grooves. A connecting screw is rotatably connected to one side of the fine-tuning translation plate. A gear is fixedly connected to the outside of the connecting screw. The outside of the gear passes through the connecting port and meshes with the rack. One side of the connecting screw is also threaded into the screw connecting block. After the micrometer screw of the fine-tuning micrometer head moves the rack horizontally in conjunction with the second compression spring, the rack and gear rotate due to the meshing connection. The gear drives the connecting screw to rotate synchronously, thereby making one side of the connecting screw rotate in the screw connecting block, realizing the horizontal movement of the fine-tuning translation plate on the coarse-tuning translation plate, and achieving fine-tuning.

[0011] As a further preferred embodiment of this utility model, the micrometer screw of the height adjustment micrometer abuts against one side of the wedge block.

[0012] As a further preferred embodiment of this utility model, a sloping groove is formed on one side of the bottom of the frame mounting plate. The top of the sloping groove is coated with a lubricating coating. A limiting bolt is inserted into the countersunk hole of the frame mounting plate. The lower end of the limiting bolt is threaded to the fine-tuning translation plate. A third compression spring is also fitted on the outside of the limiting bolt. The top of the sloping groove is slidably connected to the wedge. After the frame mounting plate is installed on the fine-tuning translation plate by multiple limiting bolts, the vertical movement of the frame mounting plate can be achieved by the force of the third compression spring on the outside of the limiting bolt, and the sloping groove and the wedge can be slidably connected. The height of the frame mounting plate can be adjusted by adjusting the position of the wedge by adjusting the height of the micrometer, thereby achieving fine adjustment of the setting height of the moving mirror.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, a coarse adjustment micrometer head, in conjunction with a slider and a first compression spring, can push a coarse adjustment translation plate to make horizontal coarse adjustments along the first slide groove. Meanwhile, a fine adjustment micrometer head drives a rack to slide in the third slide groove. Through the meshing of the rack and gear, the connecting screw drives the fine adjustment translation plate to make fine adjustments along the guide rail. The height adjustment micrometer head pushes a wedge block, and combined with the force of the third compression spring, the frame mounting plate is vertically adjusted. This eliminates the need for a long screw, significantly reducing the size, lowering the processing accuracy requirements and costs, and achieving multi-dimensional precise adjustment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the disassembled main structure of this utility model;

[0017] Figure 3 This is a bottom view of the coarse adjustment translation plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the fine-tuning adapter plate of this utility model;

[0019] Figure 5 This is a partial sectional view of the eyeglass frame mounting plate of this utility model.

[0020] In the diagram: 1. Base plate; 2. First slide groove; 3. Second slide groove; 4. First micrometer head mounting base; 5. Coarse adjustment micrometer head; 6. Coarse adjustment translation plate; 7. Fine adjustment adapter plate; 8. Third slide groove; 9. Connecting joint; 10. Rack; 11. Fine adjustment micrometer head; 12. Limiting stud; 13. Fine adjustment translation plate; 14. Second micrometer head mounting base; 15. Height adjustment micrometer head; 16. Fourth slide groove; 17. Wedge block; 18. Frame mounting plate; 19. Fixing plate; 20. Slider; 21. Mounting groove; 22. Contact plate; 23. First compression spring; 24. Guide rail; 25. Screw connecting block; 26. Second compression spring; 27. Fifth slide groove; 28. Connecting screw; 29. ​​Gear; 30. Sloping groove; 31. Limiting bolt; 32. Third compression spring. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5 As shown, this utility model provides an easily adjustable Michelson motion lens adjustment frame, including a base plate 1. Multiple first grooves 2 are formed within the base plate 1. A second groove 3 is also formed within the base plate 1 between two first grooves 2. A first micrometer mounting base 4 is fixedly connected to one side of the base plate 1 near the second groove 3. A coarse adjustment micrometer 5 is fixedly connected within the first micrometer mounting base 4. A coarse adjustment sliding plate 6 is movably connected to the base plate 1. A fine adjustment adapter plate 7 is fixedly connected to one side of the coarse adjustment sliding plate 6. A third groove 8 is formed within the fine adjustment adapter plate 7. A connecting port 9 is formed at the top of the third groove 8. A rack is slidably connected between the third groove 8 and the coarse adjustment sliding plate 6. 10. A fine adjustment micrometer head 11 is fixedly connected to the front side of the fine adjustment adapter plate 7. A limit stud 12 is threadedly connected to the rear side of the fine adjustment adapter plate 7 relative to the position of the fine adjustment micrometer head 11. A fine adjustment translation plate 13 is movably connected to the top of the coarse adjustment translation plate 6 near the position of the fine adjustment adapter plate 7. A second micrometer head mounting seat 14 is fixedly connected to one side of the fine adjustment translation plate 13. A height adjustment micrometer head 15 is fixedly connected inside the second micrometer head mounting seat 14. A fourth slide groove 16 is opened on the fine adjustment translation plate 13 near the position of the second micrometer head mounting seat 14. A wedge block 17 is slidably connected inside the fourth slide groove 16. A frame mounting plate 18 is also movably connected to the fine adjustment translation plate 13 near the position of the fourth slide groove 16.

[0023] like Figure 1As shown, the base plate 1 is fixedly connected to both the front and rear sides with fixing plates 19, so as to enable the base plate 1 to be installed on the porous base of the interferometer.

[0024] like Figures 1-3 As shown, a plurality of sliders 20 are fixedly connected to the bottom of the coarse adjustment translation plate 6. The longitudinal section of the sliders 20 is trapezoidal. The coarse adjustment translation plate 6 between two sliders 20 is also provided with a mounting groove 21. A contact plate 22 is fixedly connected in the mounting groove 21. A guide rail 24 is fixedly connected to the top of the coarse adjustment translation plate 6. The longitudinal section of the guide rail 24 is also trapezoidal. The sliders 20 are slidably connected in the corresponding first slide groove 2. The lower end of the contact plate 22 is inserted into the second slide groove 3. A first compression spring 23 is engaged with one side of the contact plate 22 and the second slide groove 3. After the coarse adjustment translation plate 6 is slidably connected to the base plate 1 by the plurality of sliders 20, one end of the micrometer screw of the coarse adjustment micrometer head 5 can be made to abut against one side of the contact plate 22, thereby cooperating with the first compression spring 23 to realize the coarse adjustment horizontal movement of the coarse adjustment translation plate 6.

[0025] like Figures 1-2 , Figures 4-5As shown, a screw connecting block 25 is fixedly connected to the top of the fine-adjustment adapter plate 7 near the connection port 9. A second compression spring 26 is engaged between the limiting stud 12 and the rack 10. One end of the micrometer screw of the fine-adjustment micrometer head 11 abuts against one side of the rack 10, and works with the second compression spring 26 to realize the horizontal movement of the rack 10 in the third slide groove 8. The bottom of the fine-adjustment translation plate 13 has multiple fifth slide grooves 27. The fine-adjustment translation plate 13 is slidably connected to the guide rail 24 through the fifth slide grooves 27. A connecting screw 28 is rotatably connected to one side of the sliding plate 13. A gear 29 is fixedly connected to the outside of the connecting screw 28. The outside of the gear 29 passes through the connecting port 9 and meshes with the rack 10. One side of the connecting screw 28 is also threaded into the screw connecting block 25. After the micrometer screw of the fine adjustment micrometer head 11 moves the rack 10 horizontally in conjunction with the second compression spring 26, the rack 10 and the gear 29 mesh together, causing the gear 29 to rotate. The gear 29 then drives the connecting screw 28 to rotate synchronously, thereby making the connecting screw... The fine adjustment translation plate 13 moves horizontally on the coarse adjustment translation plate 6 by rotating within the screw connecting block 25 on one side, thus achieving fine adjustment. The micrometer screw of the height adjustment micrometer 15 abuts against one side of the wedge block 17. A slope groove 30 is opened on one side of the bottom of the frame mounting plate 18. The top of the slope groove 30 is coated with a lubricating coating. A limit bolt 31 is inserted and connected in the countersunk hole of the frame mounting plate 18. The lower end of the limit bolt 31 is threadedly connected to the fine adjustment translation plate 13. A third compression fitting is also fitted on the outside of the limit bolt 31. Spring 32, and the top of the slope groove 30 is slidably connected to the wedge 17. After the frame mounting plate 18 is installed on the fine adjustment translation plate 13 by multiple limit bolts 31, the frame mounting plate 18 can be vertically moved by the force of the third compression spring 32 on the outside of the limit bolts 31, and the slope groove 30 and the wedge 17 can be slidably connected to each other. The height of the frame mounting plate 18 can be adjusted by adjusting the position of the wedge 17 by adjusting the height of the micrometer head 15, thereby realizing the fine adjustment of the setting height of the moving mirror.

[0026] It should be noted that this utility model is an adjustable Michelson moving lens frame that is easy to adjust. In the horizontal coarse adjustment stage, when the coarse adjustment micrometer head 5 is rotated, the micrometer screw pushes the contact plate 22, so that the coarse adjustment translation plate 6 slides along the first slide groove 2 of the bottom plate 1 through the bottom slider 20. At the same time, the contact plate 22 cooperates with the first compression spring 23 in the second slide groove 3 to balance the thrust and ensure that the coarse adjustment translation plate 6 moves smoothly, thereby driving the upper component to realize the horizontal coarse adjustment synchronously. The movement distance can be directly read through the scale of the coarse adjustment micrometer head 5 and is consistent with the scale change length.

[0027] During horizontal fine-tuning, the micrometer screw of the fine-tuning micrometer head 11 contacts the rack 10. The two ends of the rack 10 are respectively engaged with the second compression spring 26 and the limiting stud 12, allowing it to slide within the third slide groove 8. Rotating the fine-tuning micrometer head 11 pushes the rack 10 along the third slide groove 8, causing it to mesh with the gear 29, which in turn rotates. The rotation of the gear 29 synchronously rotates the connecting screw 28, displacing it along the screw connecting block 25, thereby pushing the fine-tuning translation plate 13 through... The fifth slide groove 27 slides along the guide rail 24 of the coarse adjustment translation plate 6 to achieve horizontal fine adjustment. The tooth pitch of the rack 10 is 1.25mm, the gear 29 has 40 teeth, and one revolution of the gear 29 corresponds to 50mm. The pitch of the connecting screw 28 is 0.5mm, so the movement ratio is 1 / 100. The smallest scale of the fine adjustment micrometer 11 is 0.01mm. For every 0.01mm movement of the micrometer 11, the connecting screw 28 moves back and forth by 0.0001mm. The fine adjustment accuracy can be read by converting the scale of the fine adjustment micrometer 11.

[0028] When adjusting the height, rotate the micrometer head 15, and the micrometer screw pushes the wedge block 17 to move along the fourth slide groove 16. The wedge block 17 is slidably connected to the slope groove 30 at the bottom of the frame mounting plate 18. When the wedge block 17 moves, it squeezes the inner wall of the slope groove 30. Combined with the elastic force of the third compression spring 32, the frame mounting plate 18 moves vertically along the limit bolt 31, thereby realizing the fine adjustment of the height of the moving mirror. The lubricating coating in the slope groove 30 can reduce the friction between the wedge block 17 and the slope groove 30, ensuring smooth adjustment.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An easily adjustable Michelson-controlled lens frame, characterized in that: The system includes a base plate (1), which has multiple first grooves (2) and a second groove (3) located between two of the first grooves (2). A first micrometer mounting base (4) is fixedly connected to one side of the base plate (1) near the second groove (3). A coarse adjustment micrometer (5) is fixedly connected to the first micrometer mounting base (4). A coarse adjustment sliding plate (6) is movably connected to the base plate (1). A fine adjustment adapter plate (7) is fixedly connected to one side of the coarse adjustment sliding plate (6). A third groove (8) is formed in the fine adjustment adapter plate (7). A connecting port (9) is formed at the top of the third groove (8). A rack (10) is slidably connected between the third groove (8) and the coarse adjustment sliding plate (6). A fine adjustment micrometer head (11) is fixedly connected to the front side. A limit stud (12) is threadedly connected to the rear side of the fine adjustment adapter plate (7) relative to the fine adjustment micrometer head (11). A fine adjustment translation plate (13) is movably connected to the top of the coarse adjustment translation plate (6) near the fine adjustment adapter plate (7). A second micrometer head mounting seat (14) is fixedly connected to one side of the fine adjustment translation plate (13). A height adjustment micrometer head (15) is fixedly connected inside the second micrometer head mounting seat (14). A fourth slide groove (16) is opened on the fine adjustment translation plate (13) near the second micrometer head mounting seat (14). A wedge block (17) is slidably connected inside the fourth slide groove (16). A frame mounting plate (18) is also movably connected on the fine adjustment translation plate (13) near the fourth slide groove (16).

2. The easily adjustable Michelson-controlled lens frame according to claim 1, characterized in that: The base plate (1) is fixedly connected to the front and rear sides by fixing plates (19).

3. The easily adjustable Michelson-controlled lens frame according to claim 1, characterized in that: The bottom of the coarse adjustment translation plate (6) is fixedly connected to multiple sliders (20). The longitudinal section of the sliders (20) is trapezoidal. The coarse adjustment translation plate (6) located between two of the sliders (20) is also provided with an installation groove (21). An abutment plate (22) is fixedly connected in the installation groove (21). A guide rail (24) is fixedly connected to the top of the coarse adjustment translation plate (6). The longitudinal section of the guide rail (24) is also trapezoidal. The sliders (20) are slidably connected in the corresponding first slide groove (2). The lower end of the abutment plate (22) is inserted into the second slide groove (3). A first compression spring (23) is engaged with one side of the abutment plate (22) and the second slide groove (3).

4. The easily adjustable Michelson-controlled lens frame according to claim 1, characterized in that: A screw connecting block (25) is fixedly connected to the top of the fine adjustment adapter plate (7) near the connecting port (9), and a second compression spring (26) is engaged between the limiting stud (12) and the rack (10).

5. The easily adjustable Michelson-controlled lens frame according to claim 1, characterized in that: The fine adjustment translation plate (13) has multiple fifth slide grooves (27) at its bottom. The fine adjustment translation plate (13) is slidably connected to the guide rail (24) through the fifth slide grooves (27). A connecting screw (28) is rotatably connected to one side of the fine adjustment translation plate (13). A gear (29) is fixedly connected to the outside of the connecting screw (28). The outside of the gear (29) passes through the connecting port (9) and meshes with the rack (10). One side of the connecting screw (28) is also threaded into the screw connecting block (25).

6. The easily adjustable Michelson-controlled lens frame according to claim 1, characterized in that: The micrometer screw of the height adjustment micrometer (15) abuts against one side of the wedge (17).

7. The easily adjustable Michelson-controlled lens frame according to claim 6, characterized in that: The bottom side of the frame mounting plate (18) is provided with a slope groove (30). The top of the slope groove (30) is coated with a lubricating coating. A limit bolt (31) is inserted into the countersunk hole of the frame mounting plate (18). The lower end of the limit bolt (31) is threaded onto the fine adjustment translation plate (13). A third compression spring (32) is also fitted on the outside of the limit bolt (31). The top of the slope groove (30) is slidably connected to the wedge block (17).

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