Two-dimensional adjustable optical slit device

Abstract

The utility model relates to the technical field of optical instruments, in particular to a two-dimensional adjustable optical slit device which comprises a base, two containing cavities are symmetrically formed in the base, and a partition plate is formed between the two containing cavities. A blade is arranged in each containing cavity, a rotating shaft transversely penetrates through the blades, positioning columns are arranged at the two ends of the rotating shaft, sliding grooves are formed in the front inner wall and the rear inner wall of each containing cavity, and the positioning columns are inserted into the sliding grooves and slide in the sliding grooves. The end, extending out of the sliding groove, of the positioning column is fixedly connected with a supporting plate, the supporting plate is connected with a sliding plate arranged on the base in a sliding mode, and the sliding plate is provided with a spiral micrometer head. The positioning column moves along the sliding groove to achieve large-range position adjustment, the spiral micrometer head is responsible for high-precision slit width control, transverse and tangential two-dimensional adjustment is achieved, efficiency and precision are both considered, the slit width and the center position can be simply and accurately adjusted, and the structure is simple and practical.

Description

Technical Field

[0001] This utility model relates to the field of optical instrument technology, specifically to a dual-dimensional adjustable optical slit device. Background Technology

[0002] Optical slits are widely used in optical instruments and are an important component of monochromator systems. Their motion accuracy and resolution requirements are always high. The quality of the optical slit's motion directly affects the spectral resolution of the entire instrument. Slit mechanisms are often installed in optical instruments such as spectrometers, and the width of the slit needs to be adjusted according to the actual situation during use.

[0003] However, in existing technologies, the slit adjustment mechanism within optical instruments is not convenient for adjusting the slit width according to the user's actual illumination needs. The adjustment accuracy is low and prone to error, causing inconvenience and limitations to the use of the optical instrument. Therefore, we propose a two-dimensional adjustable optical slit device to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing optical instruments' slit adjustment mechanisms, such as the inconvenience in adjusting the slit width according to the user's actual illumination needs, low adjustment accuracy, and errors that cause inconvenience and limitations, this invention proposes a dual-dimensional adjustable optical slit device. The slit is adjusted laterally via a drive mechanism and tangentially via a micrometer screw, achieving dual-dimensional adjustment in both directions. Specifically, the drive mechanism moves a positioning column along a slide groove to achieve a wide range of position adjustments, while the micrometer screw controls the slit width with high precision, balancing efficiency and accuracy. Furthermore, it can adjust not only the slit width but also its position, simply and accurately achieving dual-dimensional adjustment of both the slit width and center position. The structure is simple and practical.

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

[0006] A dual-dimensional adjustable optical slit device includes a base with two symmetrically arranged receiving cavities, separated by a partition. Each cavity contains a blade with a transversely extending shaft. Positioning posts are located at both ends of the shaft. Sliding grooves are formed on the front and rear inner walls of each cavity, allowing the positioning posts to slide within them. A support plate is fixedly connected to one end of each positioning post extending outside the groove. A sliding plate, slidably mounted on the base, is connected to the support plate. A micrometer is mounted on the sliding plate. The positioning posts move along the grooves to achieve a wide range of position adjustments, while the micrometer controls the slit width with high precision, balancing efficiency and accuracy.

[0007] Furthermore, the base is provided with a driving mechanism for driving the positioning post to slide within the groove. The driving mechanism includes a bracket and a lead screw. The lead screw is rotatably mounted on the bracket, and a handle is connected to one end of the lead screw. A slider that slides along the bracket is threaded onto the lead screw. Connecting rods are provided at both ends of the slider. The connecting rods are L-shaped, and their two ends are fixedly connected to the slider and the positioning post, respectively. By rotating the lead screw with the handle, the slider slides on the lead screw, which in turn drives the positioning post to slide within the groove via the connecting rods.

[0008] Furthermore, the base is provided with two positioning holes, which are respectively connected to corresponding sliding grooves, and one side of the connecting rod is inserted into the positioning hole.

[0009] Furthermore, a tension spring is provided between the blade and the partition. The tension spring ensures that the push rod of the micrometer screw presses against the blade.

[0010] Furthermore, the blade is mounted on the rotating shaft and rotates in conjunction with the shaft.

[0011] Furthermore, the sliding plate is an n-shaped plate, the cylinder of the micrometer screw is fixed at the top center of the sliding plate, and the push rod of the micrometer screw presses against the upper surface of the blade.

[0012] Furthermore, a light-transmitting hole is provided in the center of the partition.

[0013] Furthermore, reinforcing ribs are provided between the sliding plate and the positioning post.

[0014] The beneficial effects of this utility model through the above technical solution are as follows:

[0015] In use, this invention involves rotating the screw via a handle, causing the slider to slide along the screw. This, in turn, drives the positioning pin to slide within the groove via a connecting rod, which in turn causes the blade to move linearly on the base. The base is designed with two symmetrical receiving cavities, separated by a partition to allow for independent adjustment, supporting both blades to operate collaboratively or independently. By rotating the knob of the micrometer screw, the push rod of the micrometer screw is raised or lowered, increasing or decreasing the slit width between the two blades. Therefore, this device achieves dual-dimensional adjustment in both the lateral and tangential directions through the drive mechanism and the micrometer screw, respectively. Specifically, the positioning pin moves along the groove to achieve a wide range of position adjustments, while the micrometer screw is responsible for high-precision slit width control, balancing efficiency and accuracy. It also allows for simple and precise adjustment of the slit width and center position, resulting in a simple and practical structure that overcomes the limitations of traditional methods that only adjust the slit width. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional adjustable optical slit device. Figure 1 ;

[0017] Figure 2 This utility model provides a three-dimensional adjustable optical slit device. Figure 2 ;

[0018] Figure 3 This is a formal cross-sectional view of a dual-dimensional adjustable optical slit device according to the present invention;

[0019] Figure 4 This diagram illustrates the connection relationship between the drive mechanism, rotating shaft, and blade in a dual-dimensional adjustable optical slit device according to this utility model.

[0020] Figure 5 This is a diagram showing the connection relationship between the connecting rod, positioning column, and sliding plate in a dual-dimensional adjustable optical slit device of this utility model.

[0021] Figure 6 This is a schematic diagram of the base in a dual-dimensional adjustable optical slit device according to the present invention.

[0022] The numbers in the attached diagram are:

[0023] 1. Base; 2. Receiving cavity; 3. Partition plate; 4. Blade; 5. Rotating shaft; 6. Positioning post; 7. Slide groove; 8. Support plate; 9. Sliding plate; 10. Micrometer screw; 11. Bracket; 12. Lead screw; 13. Handle; 14. Slider; 15. Connecting rod; 16. Positioning hole; 17. Tension spring; 18. Light-transmitting hole; 19. Reinforcing rib. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1-6 As shown, this embodiment provides a dual-dimensional adjustable optical slit device, including a base 1, on which two symmetrically arranged receiving cavities 2 are formed, and a partition 3 is formed between the two receiving cavities 2; each receiving cavity 2 is provided with a blade 4, and a rotating shaft 5 is transversely inserted through the blade 4. Positioning posts 6 are provided at both ends of the rotating shaft 5. Sliding grooves 7 are provided on the front and rear inner walls of the receiving cavity 2. The positioning posts 6 are inserted into the sliding grooves 7 and slide in the sliding grooves 7; a support plate 8 is fixedly connected to one end of the positioning post 6 extending outside the sliding groove 7. The support plate 8 is connected to a sliding plate 9 that is slidably arranged with the base 1. A micrometer screw 10 is provided on the sliding plate 9.

[0026] With the above-mentioned structure, the horizontal direction is adjusted by the drive mechanism, and the tangential direction is adjusted by the micrometer head 10, realizing dual-dimensional adjustment in both the horizontal and tangential directions. Specifically, the positioning column 6 moves along the slide groove 7 to achieve a wide range of position adjustment, while the micrometer head 10 is responsible for high-precision slit width control, taking into account both efficiency and accuracy. Moreover, it can not only adjust the width of the slit but also adjust the position of the slit, thus simply and accurately realizing the adjustment of the slit width and center position.

[0027] Please refer to this again. Figure 4 The base 1 is equipped with a driving mechanism for driving the positioning post 6 to slide within the slide groove 7. The driving mechanism includes a bracket 11 and a lead screw 12. The lead screw 12 is rotatably mounted on the bracket 11, and a handle 13 is connected to one end of the lead screw 12. A slider 14, which slides along the bracket 11, is threaded onto the lead screw 12. Connecting rods 15 are provided at both ends of the slider 14. The connecting rods 15 are L-shaped, and their two ends are fixedly connected to the slider 14 and the positioning post 6, respectively. By rotating the lead screw 12 with the handle 13, the slider 14 slides on the lead screw 12, thereby driving the positioning post 6 to slide within the slide groove 7 via the connecting rods 15.

[0028] Please refer to this again. Figure 6 The base 1 also has two positioning holes 16, which are respectively connected to corresponding sliding grooves 7. One side of the connecting rod 15 is inserted into the positioning hole 16. By cooperating with the positioning hole 16, the connecting rod 15 prevents the slider 14 from rotating with the lead screw 12, ensuring that the slider 14 only moves along one end of the lead screw 12 axially.

[0029] In this embodiment, a tension spring 17 is provided between the blade 4 and the partition 3. The tension spring 17 ensures that the push rod of the micrometer head 10 presses against the blade 4.

[0030] In this embodiment, the blade 4 is mounted on the rotating shaft 5 and rotates in coordination with the rotating shaft 5.

[0031] In this invention, the sliding plate 9 is an n-shaped plate, the cylinder of the micrometer head 10 is fixed at the top center of the sliding plate 9, and the push rod of the micrometer head 10 presses against the upper surface of the blade 4.

[0032] It should be noted that a light-transmitting hole 18 is provided in the center of the partition plate 3. A reinforcing rib 19 is provided between the sliding plate 9 and the positioning post 6. In addition, the base 1 is also provided with a threaded hole for connecting with the optical base 1, and the moving distance of the two sliders 14 can be known by the scale lines provided on the bracket 11, so as to achieve precise adjustment of the moving position of the blade 4. The threaded hole and scale lines are not shown in the figure.

[0033] The working principle of this utility model is as follows:

[0034] In use, by rotating the screw 12 by the handle 13, the slider 14 slides on the screw 12, and then the positioning column 6 slides in the groove 7 through the connecting rod 15, which in turn drives the blade 4 to move linearly on the base 1. The base 1 is designed with two symmetrical receiving cavities 2, which are separated by the partition 3 to form independent adjustment, supporting the coordinated or independent operation of the two blades 4.

[0035] By rotating the knob of the micrometer head 10, the push rod of the micrometer head 10 is raised and lowered. On the one hand, when the push rod of the micrometer head 10 descends, it pushes the blade 4 to flip and overcomes the elastic force of the tension spring 17, increasing the slit width between the two blades 4. On the other hand, when the push rod of the micrometer head 10 rises, it drives the blade 4 to flip in the opposite direction under the action of the tension spring 17, decreasing the slit width between the two blades 4.

[0036] In summary, this utility model achieves dual-dimensional adjustment in both the lateral and tangential directions through a drive mechanism and a micrometer head 10. Specifically, the positioning column 6 moves along the slide groove 7 to achieve a wide range of position adjustments, while the micrometer head 10 is responsible for high-precision slit width control, balancing efficiency and accuracy. It can also easily and accurately adjust the slit width and center position, breaking through the limitations of traditional methods that only adjust the slit width. The structure is simple and practical.

[0037] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A two-dimensional adjustable optical slit device, comprising a base (1), characterized in that, Two symmetrically arranged receiving cavities (2) are formed on the base (1), and a partition (3) is formed between the two receiving cavities (2); each receiving cavity (2) is provided with a blade (4), and a rotating shaft (5) is transversely inserted on the blade (4). Positioning posts (6) are provided at both ends of the rotating shaft (5). Sliding grooves (7) are provided on the front and rear inner walls of the receiving cavity (2). The positioning posts (6) are inserted into the sliding grooves (7) and slide in the sliding grooves (7); a support plate (8) is fixedly connected to one end of the positioning posts (6) extending to the outside of the sliding grooves (7). The support plate (8) is connected to a sliding plate (9) that is slidably arranged with the base (1). A micrometer screw (10) is provided on the sliding plate (9).

2. The dual-dimensional adjustable optical slit device according to claim 1, characterized in that, The base (1) is provided with a driving mechanism for driving the positioning column (6) to slide in the slide groove (7). The driving mechanism includes a bracket (11) and a lead screw (12). The lead screw (12) is rotatably mounted on the bracket (11). One end of the lead screw (12) is connected to a handle (13). A slider (14) is threadedly connected to the lead screw (12) and is slidably mounted on the bracket (11). The front and rear ends of the slider (14) are provided with connecting rods (15). The connecting rods (15) are L-shaped rods. The two ends of the connecting rods (15) are fixedly connected to the slider (14) and the positioning column (6) respectively.

3. The dual-dimensional adjustable optical slit device according to claim 2, characterized in that, The base (1) also has two positioning holes (16), which are connected to the corresponding slide grooves (7) respectively, and one side of the connecting rod (15) is inserted into the positioning hole (16).

4. The dual-dimensional adjustable optical slit device according to claim 1, characterized in that, A tension spring (17) is provided between the blade (4) and the partition (3).

5. The dual-dimensional adjustable optical slit device according to claim 1, characterized in that, The blade (4) is mounted on the rotating shaft (5) and rotates in coordination with the rotating shaft (5).

6. The dual-dimensional adjustable optical slit device according to claim 1, characterized in that, The sliding plate (9) is an n-shaped plate, and the cylinder of the micrometer screw (10) is fixed at the top center of the sliding plate (9). The push rod of the micrometer screw (10) presses against the upper surface of the blade (4).

7. The dual-dimensional adjustable optical slit device according to claim 1, characterized in that, The partition (3) has a light-transmitting hole (18) in the center.

8. The dual-dimensional adjustable optical slit device according to claim 1, characterized in that, A reinforcing rib (19) is provided between the sliding plate (9) and the positioning post (6).

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