Spectrometer for coarse adjustment

Abstract

The utility model relates to the spectrometer convenient to coarse adjustment, including object table and telescope, the round level is arranged in the object table, the round level top is equipped with the transparent apron, the transparent apron sets up the upper end of object table, is equipped with the rectangular coordinate system on the transparent apron, the mirror barrel outer wall of telescope is equipped with the mounting panel parallel with the optical axis of telescope, is equipped with the strip level on the mounting panel, the strip level upper end is installed with transparent scale rule. Have the advantages such as reasonable in structure design, give consideration to student operation and coarse adjustment efficiency, improve experimental teaching effect etc.

Description

Technical fields:

[0001] This utility model relates to the field of spectrometer technology, and more specifically to a spectrometer that is easy to coarsely adjust. Background technology:

[0002] A spectrometer is a precise optical instrument used for measuring angles and is widely applied in scientific research in fields such as physics, chemistry, and materials science. The adjustment of a spectrometer and the determination of its refractive index are essential courses in university physics experiments. Through adjusting and using a spectrometer, students can understand its structure and working principle, master its adjustment methods, and learn how to use it to measure the apex angle and refractive index of a prism.

[0003] In actual experiments, the high requirements, difficulty, and complexity of spectrometer adjustment make the entire process lengthy, easily causing students to become anxious and bored. Some even fail to complete the experiment, ultimately leading to unsatisfactory teaching results. Through daily teaching summaries and communication with students, it was found that the initial adjustment stage is the one that students spend the most time on. Figure 4 As shown, the coarse adjustment of the spectrometer currently used in schools requires placing the two-plane mirror on the stage. The image reflected back from the two-plane mirror can be observed through the telescope's eyepiece. However, students' judgment of the adjustment by eye is often unsatisfactory, and they cannot observe the image in the telescope's field of view. Furthermore, some students only see the image on one side of the two-plane mirror before attempting to align the telescope's principal optical axis with the central axis. This can result in the two-plane mirror being rotated 180° and no image being visible, necessitating a repeat of the coarse adjustment and wasting considerable time.

[0004] To achieve rapid and accurate coarse adjustment, existing technologies have made various attempts. Utilizing a bubble level can improve the efficiency and accuracy of coarse adjustment. For example, a spectrometer stage for convenient horizontal adjustment disclosed in Chinese patent (CN205981141U) utilizes the principle of a level to enable rapid horizontal adjustment of the stage, which is more efficient and accurate than the previous method using dual-plane mirrors. Practical experiments using a bubble level to simulate the above-mentioned technical solutions have achieved some positive technical results, but problems such as the inability to produce an image still occur from time to time. In-depth analysis revealed a deeper technical problem, such as... Figure 5 As shown, the above technical solution neglects the issue of errors in the spectrometer's main axis. That is, the spectrometer's main axis is not necessarily perpendicular to the horizontal plane. This is mainly due to factors such as manufacturing precision, whether the spectrometer base is installed horizontally, and wear and tear from prolonged use. This means that although the telescope's optical axis may be perpendicular to the spectrometer's main axis, it may not be parallel to the stage, leading to situations where imaging is impossible. Therefore, it is necessary to optimize and improve the existing spectrometer to ensure students can operate and train while also improving the efficiency and accuracy of coarse adjustments, thereby enhancing the effectiveness of experimental teaching.

[0005] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility model content:

[0006] The purpose of this invention is to solve the problems existing in the prior art and provide a spectrometer that is easy to coarsely adjust. It has the advantages of reasonable structural design, taking into account the efficiency of student operation and coarse adjustment, and improving the effect of experimental teaching.

[0007] This utility model achieves the above objectives by adopting the following technical solutions:

[0008] A spectrometer for easy coarse adjustment includes a stage and a telescope. A circular level is installed inside the stage, and a transparent cover plate is provided above the circular level. The transparent cover plate is located at the upper end of the stage and has a rectangular coordinate system. A mounting plate parallel to the optical axis of the telescope is provided on the outer wall of the telescope tube. A bar level is provided on the mounting plate, and a transparent scale is installed at the upper end of the bar level.

[0009] The platform has an internal mounting groove, and the circular level is installed in the mounting groove and pressed in place by a transparent cover plate. The transparent cover plate is installed on the upper end of the platform by a threaded connection.

[0010] A rectangular coordinate system is provided on the lower end surface of the transparent cover.

[0011] The lower end surface of the transparent cover plate is provided with a plurality of auxiliary lines A parallel to the vertical axis at even intervals, and the lower end surface of the transparent cover plate is provided with a plurality of auxiliary lines B parallel to the horizontal axis at even intervals.

[0012] The horizontal and vertical axes in the rectangular coordinate system are represented by solid lines, while auxiliary lines A and B are represented by dashed lines.

[0013] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0014] (1) By making simple improvements to the stage, a circular level is installed inside it and equipped with a rectangular coordinate system to facilitate reading the position coordinates of the bubble. Then, the stage is rotated for adjustment so that the plane of the stage is perpendicular to the main axis of the spectrometer. (2) Based on the coordinates used for adjusting the stage, the telescope is adjusted to be perpendicular to the main axis of the spectrometer. This improves the efficiency and effectiveness of coarse adjustment. Attached image description:

[0015] Figure 1 This is a schematic diagram of the spectrometer of this utility model that is easy to coarsely adjust;

[0016] Figure 2 This is an exploded view of the platform of this utility model;

[0017] Figure 3 This is a top view of the platform of this utility model;

[0018] Figure 4 This is a partial top view of the telescope of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of an existing spectrometer;

[0020] Figure 6 This is a schematic diagram illustrating the error principle of stage horizontal adjustment when there is an error in the optical axis of the spectrometer.

[0021] In the diagram, 1. Stage, 2. Telescope, 3. Circular level, 4. Transparent cover plate, 5. Cartesian coordinate system, 501. Horizontal axis, 502. Vertical axis, 6. Lens tube, 7. Mounting plate, 8. Bar level, 9. Transparent scale, 10. Mounting slot, 11. Threaded connection, 12. Auxiliary line A, 13. Auxiliary line B, 14. Spectrometer spindle, 15. Horizontal adjustment screw, 16. Bubble A, 17. Pitch adjustment screw, 18. Bubble B, 19. Existing spectrometer, 20. Horizontal plane. Detailed implementation method:

[0022] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0024] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "connected" should be interpreted broadly. For example, "provided with" and "set up" can refer to fixed installation, detachable installation, or integration; "connected" can refer to direct connection or connection through an intermediate medium; and "connected" in this application mainly refers to the interconnection of air passages. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] like Figure 1-4As shown, the spectrometer, which is convenient for coarse adjustment, includes a stage 1 and a telescope 2. A circular level 3 is installed inside the stage 1. A transparent cover plate 4 is provided above the circular level 3. The transparent cover plate 4 is located at the upper end of the stage 1 and has a rectangular coordinate system 5. The origin of the rectangular coordinate system 5 is vertically aligned with the center of the circular level 3. The outer wall of the telescope tube 6 has a mounting plate 7 parallel to the optical axis of the telescope. A bar level 8 is provided on the mounting plate 7. A transparent scale 9 is installed at the upper end of the bar level 8. The origin of the transparent scale 9 is vertically aligned with the center of the bar level 8. By making simple improvements to the stage 1, a circular level 3 is installed inside it and equipped with a rectangular coordinate system 5, facilitating the reading of the bubble's position coordinates. Then, the stage 1 is rotated for adjustment, ensuring its plane is perpendicular to the spectrometer's main axis 14. Based on the coordinates used to adjust the stage 1, the telescope 2 is adjusted to be perpendicular to the spectrometer's main axis 14, significantly improving the efficiency and effectiveness of coarse adjustment. While the circular level 3 is existing technology, it's important to note that this application uses a scale (rectangular coordinate system) for bubble reading, rather than the angle values ​​of existing levels. Its primary purpose is to achieve rapid and efficient adjustment using distance, as this is the coarse adjustment stage and doesn't require particularly high precision; only image formation is necessary. Fine adjustment is then performed using a 50 / 50 adjustment method. This fine adjustment is retained to allow students to practice and master the technique. While existing technology can achieve numerically controlled fine adjustment, this is unsuitable for school lab classes. If all fine adjustment is numerically controlled, students would essentially need to operate the equipment, thus hindering the effective development of their hands-on skills, patience, and problem-solving abilities. It should be noted that the installation of the stage 1 and other components, as well as the structure of components such as the telescope 2, can all be achieved using existing spectrometer 19 technology.

[0027] The platform 1 has a mounting groove 10 inside, and the circular level 3 is placed in the mounting groove 10 and pressed in place by a transparent cover plate 4. The transparent cover plate 4 is installed on the upper end of the platform 1 via a threaded connection 11. The specific installation structure of the circular level 3 is given to ensure installation accuracy and reliability.

[0028] A rectangular coordinate system 5 is provided on the lower end face of the transparent cover plate 4. This design ensures that the upper end face of the transparent cover plate 4 is consistent with the original platform, without affecting the normal use of the platform 1.

[0029] The lower surface of the transparent cover plate 4 is evenly spaced with multiple auxiliary lines A12 parallel to the vertical axis (y-axis), and the lower surface of the transparent cover plate 4 is evenly spaced with multiple auxiliary lines B13 parallel to the horizontal axis (x-axis). By designing auxiliary lines A12 and B13, the position value of the bubble can be read quickly and accurately.

[0030] In the rectangular coordinate system 5, the horizontal axis 501 and the vertical axis 502 are represented by solid lines, while the auxiliary lines A12 and B13 are represented by dashed lines. This combination of solid and dashed lines facilitates differentiation.

[0031] This application includes instructions for using a spectrometer for easy coarse adjustment:

[0032] Coarse adjustment process:

[0033] Adjust the leveling screw 15 below the stage 1 until the bubble A16 of the circular level 3 is centered; rotate the stage 1 180° and read the coordinates of the bubble A16 as (x... a y a The values ​​here are estimated values ​​read from the center position of bubble A16 and the Cartesian coordinate system 5; bubble A16 is moved by adjusting the horizontal adjustment screw 15. The position, here the value is also an estimate read from the center position of bubble A16 and the rectangular coordinate system 5, so that the plane of stage 1 is perpendicular to the main axis 14 of the spectrometer (basically perpendicular, with very small error, as long as image output is guaranteed); the principle is referenced in the appendix. Figure 5 and 6 When the spectrometer spindle 14 is not a plumb bob, the angle between its upper end face and the horizontal plane 20 is α (at this time, the stage 1 is adjusted to be horizontal). However, after rotating 180°, the angle between the stage 1 and the horizontal plane 20 is 2α. In order to make the stage 1 perpendicular to the spectrometer spindle 14, the angle of the stage 1 needs to be adjusted to α. Since the angle is relatively small and it is in the coarse adjustment stage, half of the angle can be approximately equal to half of the distance. Therefore, adjusting half of the distance of bubble A16 is sufficient.

[0034] By adjusting the pitch adjustment screw 17 in the telescope 2, the bubble B18 of the bar level 8 is positioned at the center; by adjusting the pitch adjustment screw 17, the bubble B18 is moved to... The position, where the value is estimated by reading the center position of bubble B18 and the scale on the transparent ruler 9, ensures that the telescope's optical axis is perpendicular to the spectrometer's main axis 14. This operation efficiently completes the main coarse adjustment, laying the foundation for subsequent experiments and improving coarse adjustment efficiency. The principle for adjusting the dimensions is the same as the adjustment of stage 1 described above.

[0035] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0036] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A spectrometer that is easy to coarsely adjust, characterized in that, The device includes a stage and a telescope. A circular level is installed inside the stage, and a transparent cover plate is provided above the circular level. The transparent cover plate is located at the upper end of the stage and has a rectangular coordinate system. A mounting plate parallel to the optical axis of the telescope is provided on the outer wall of the telescope tube. A bar level is provided on the mounting plate, and a transparent scale is installed at the upper end of the bar level.

2. The spectrometer for easy coarse adjustment according to claim 1, characterized in that, The platform has an internal mounting groove, and the circular level is installed in the mounting groove and pressed in place by a transparent cover plate. The transparent cover plate is installed on the upper end of the platform by a threaded connection.

3. The spectrometer for easy coarse adjustment according to claim 2, characterized in that, A rectangular coordinate system is provided on the lower end surface of the transparent cover.

4. The spectrometer for easy coarse adjustment according to claim 3, characterized in that, The lower end surface of the transparent cover plate is provided with a plurality of auxiliary lines A parallel to the vertical axis at even intervals, and the lower end surface of the transparent cover plate is provided with a plurality of auxiliary lines B parallel to the horizontal axis at even intervals.

5. The spectrometer for easy coarse adjustment according to claim 4, characterized in that, The horizontal and vertical axes in the rectangular coordinate system are represented by solid lines, while auxiliary lines A and B are represented by dashed lines.

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