Physical optics experiment demonstration teaching aid

Abstract

The utility model relates to the field of experiment demonstration teaching aids, and discloses a physical optics experiment demonstration teaching aid comprising a slide rail, a support block arranged on the top of the slide rail, a housing fixedly connected on the top of the support block, an adjusting mechanism arranged in the housing, and an observation screen fixedly connected on the top of the support block on the front side. The top of the supporting block on the rear side is fixedly connected with a luminous body, a limiting assembly is arranged on the side wall of the sliding rail, the adjusting mechanism comprises a rotating frame, a second sliding groove is formed in the rotating frame, a first sliding groove is formed in the shell, a sliding rod is fixedly connected in the shell, and a handle is fixedly connected to the side wall of the rotating frame. According to the utility model, the sliding handle drives the rotation of the blade, the size of the hole is changed through the rotation angle of the blade, the disassembly and replacement are not needed, the time is saved, the operation is convenient and trouble-saving, and the intuition and interactivity in the experiment process are improved.

Description

Technical Field

[0001] This utility model relates to the field of experimental demonstration teaching aids, and in particular to a physical optics experimental demonstration teaching aid. Background Technology

[0002] Physical optics experiments are an important branch of physics experiments. They involve the properties and behavior of light and its interaction with matter. These experiments help students understand and master the basic concepts, principles and phenomena of optics. Among them, the pinhole imaging experiment is a fundamental experiment in physical optics. It demonstrates the rectilinear propagation of light. When conducting physical optics experiments, demonstration teaching aids are indispensable tools in physics teaching. They help students intuitively understand optical principles and phenomena.

[0003] Traditional physical optics experiment demonstration teaching aids consist of incandescent lamps, opaque boards, imaging screens, support frames, etc. The experiments are based on the principle of rectilinear propagation of light: when light rays pass through a small hole, they will travel in a straight line and form an image on the screen. The size of the small hole affects the clarity and brightness of the image. The smaller the small hole, the clearer the image, but the lower the brightness; the larger the small hole, the higher the brightness of the image, but the clarity may be reduced.

[0004] Traditional physical optics experiment demonstration teaching aids require multiple opaque boards with holes of different sizes for comparative experiments. This process involves multiple disassembly and replacement, which is time-consuming. Therefore, a physical optics experiment demonstration teaching aid is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a physical optics experimental demonstration teaching tool, which aims to improve the time-consuming problem of the existing technology that requires multiple disassemblies and replacements of opaque plates with holes of different sizes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A physical optics experiment demonstration teaching aid includes a slide rail, a support block is provided on the top of the slide rail, a shell is fixedly connected to the top of the support block, an adjustment mechanism is provided inside the shell, an observation screen is fixedly connected to the top of the support block on the front side, a light source is fixedly connected to the top of the support block on the rear side, and a limit component is provided on the side wall of the slide rail.

[0008] The adjustment mechanism includes a rotating frame rotatably connected inside the outer casing. A second sliding groove is formed inside the rotating frame, and a first sliding groove is formed inside the outer casing. A sliding rod is fixedly connected inside the outer casing. A handle is fixedly connected to the side wall of the rotating frame, and the handle is slidably connected inside the first sliding groove. The sliding rod is slidably connected inside the second sliding groove. A first connecting post is fixedly connected to the side wall of the rotating frame. A connecting rod is rotatably connected to the side wall of the first connecting post. A blade is rotatably connected to the side wall of the connecting rod. A second connecting post is rotatably connected inside the blade. An inner ring is fixedly connected to the bottom of the second connecting post. The side wall of the inner ring is fixedly connected inside the outer casing. A hole is formed in the side wall of the outer casing.

[0009] As a further description of the above technical solution:

[0010] The slide rail has a slider that is slidably connected inside. The slider has a support plate that is fixedly connected to its side wall. The support plate is fixedly connected to the support block. The slide rail has a scale that is fixedly connected to its side wall.

[0011] As a further description of the above technical solution:

[0012] The limiting component includes a support box, the support box having a groove inside, and the slide rail being slidably connected inside the groove;

[0013] As a further description of the above technical solution:

[0014] The support box has a fourth slot at its top, and the slide rail has a first slot at its top.

[0015] As a further description of the above technical solution:

[0016] The first slot and the fourth slot are internally threaded with a first threaded rod, and a throttle is fixedly connected to the top of the first threaded rod;

[0017] As a further description of the above technical solution:

[0018] The support plate has a second slot, and the slider has a third slot.

[0019] As a further description of the above technical solution:

[0020] The second slot and the third slot are internally threaded with a second threaded rod;

[0021] As a further description of the above technical solution:

[0022] A rod cap is fixedly connected to the top of the second threaded rod, and a friction block is fixedly connected to the bottom of the second threaded rod.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the rotating frame is rotated inside the outer shell by sliding the handle, and the sliding rod set inside the outer shell slides in the second slot hole opened in the rotating frame to avoid excessive rotation. At the same time, the connecting rod on the rotating frame causes the blade to rotate around the second connecting column as the axis. The size of the hole is adjusted by the degree of rotation and opening and closing of the blade, thereby realizing the ability to freely adjust the size of the pinhole for comparative experiments in pinhole imaging experiments, which improves convenience.

[0025] 2. In this utility model, the support block slides on the slide rail. The precise positions of the light source, the hole, and the observation screen are observed using a scale. Once imaging is successful, the rod cap can be rotated to allow the second helical rod to pass through the slider and the support plate until the friction block at the bottom of the second helical rod abuts against the slide rail for fixation. At the end of the experiment, the handle is rotated to disengage the first helical rod from the slide rail and the support box. The slider can then fall off along the slide rail and be removed, achieving precise positioning for easy observation and convenient storage after the experiment, thus improving practicality. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a physical optics experiment demonstration teaching aid proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the outer shell of a physical optics experiment demonstration teaching aid proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a support box for a physical optics experiment demonstration teaching aid proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the support block of a physical optics experiment demonstration teaching aid proposed in this utility model.

[0030] Legend:

[0031] 1. Slide rail; 2. Slider; 3. Support plate; 4. Support block; 5. Outer shell; 6. First slide groove; 7. Handle; 8. Second slide groove; 9. Slide rod; 10. First connecting post; 11. Connecting rod; 12. Blade; 13. Inner ring; 14. Second connecting post; 15. Support box; 16. First slot; 17. First threaded rod; 18. Second slot; 19. Third slot; 20. Second threaded rod; 21. Friction block; 22. Scale; 23. Light source; 24. Observation screen; 25. Fourth slot; 26. Rod cap; 27. Turn handle; 28. Rotating frame; 29. ​​Hole; 30. Groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3 An embodiment of this utility model is provided: a physical optics experiment demonstration teaching aid, including a slide rail 1, a support block 4 is provided on the top of the slide rail 1, a shell 5 is fixedly connected to the top of the support block 4, an adjustment mechanism is provided inside the shell 5, an observation screen 24 is fixedly connected to the top of the front support block 4, a light emitting body 23 is fixedly connected to the top of the rear support block 4, and a limit component is provided on the side wall of the slide rail 1.

[0034] The adjustment mechanism includes a rotating frame 28, which is rotatably connected inside the outer casing 5. A second sliding groove 8 is provided inside the rotating frame 28, and a first sliding groove 6 is provided inside the outer casing 5. A sliding rod 9 is fixedly connected inside the outer casing 5. A handle 7 is fixedly connected to the side wall of the rotating frame 28, and the handle 7 is slidably connected inside the first sliding groove 6. The first sliding groove 6 prevents the handle 7 from sliding too much. The sliding rod 9 is slidably connected inside the second sliding groove 8. The second sliding groove 8 and the sliding rod 9 prevent the rotating frame 28 from rotating too much. A first connecting post 10 is fixedly connected to the side wall of the rotating frame 28. A connecting rod 11 is rotatably connected to the side wall of the first connecting post 10. A blade 12 is rotatably connected to the side wall of the connecting rod 11. A second connecting post 14 is rotatably connected inside the blade 12. An inner ring 13 is fixedly connected to the bottom of the second connecting post 14. The side wall of the inner ring 13 is fixedly connected to the inside of the outer casing 5. A hole 29 is provided on the side wall of the outer casing 5. The size of the hole 29 can be changed by rotating the blade 12, eliminating the need for manual replacement and making it more convenient.

[0035] During the operation of the demonstration teaching aid, firstly, the light source 23, the outer shell 5, and the observation screen 24 need to be securely installed in the front, middle, and rear positions of the support block 4, respectively. Next, engage the two ends of the slide rail 1 with the grooves 30 on the support box 15, and turn the handle 27 to make the first threaded rod 17 start to rotate, connecting the first slot 16 and the fourth slot 25 to effectively fix the slide rail 1 and the support box 15, ensuring the stability of the entire structure. Place the support box 15 horizontally. Next, operate the handle 7 located in the first slide groove 6, and use the handle 7... The sliding mechanism causes the rotating frame 28 to rotate. As the rotating frame 28 rotates, the sliding rod 9 moves accordingly within the second sliding groove 8. The rotating frame 28 is connected to the blade 12 via the connecting rod 11. When the rotating frame 28 rotates, the connecting rod 11 drives the blade 12 to rotate accordingly. The blade 12 rotates around the second connecting column 14. By adjusting the rotation angle of the blade 12, the size of the hole 29 can be changed. This design allows the demonstration teaching aid to show different physical phenomena through simple operation, improving the intuitiveness and interactivity of teaching.

[0036] Reference Figures 3-4 The slide rail 1 has a slider 2 slidably connected inside, and a support plate 3 is fixedly connected to the side wall of the slider 2. The support plate 3 is fixedly connected to the support block 4. After the light source 23, the outer shell 5, and the observation screen 24 are fixed on the support block 4, they can be moved by the slider 2. A scale 22 is fixedly connected to the side wall of the slide rail 1 for observing the position. The limiting component includes a support box 15, which has a groove 30 inside. The slide rail 1 is slidably connected inside the groove 30. The top of the support box 15 has a fourth slot 25, and the top of the slide rail 1 has a first slot 16. The first slot 16 and The fourth slot 25 is internally threaded with a first threaded rod 17. The top of the first threaded rod 17 is fixedly connected with a handle 27. After the support box 15 is connected and installed, it can restrict the position of the slider 2. The support plate 3 has a second slot 18 inside, and the slider 2 has a third slot 19 inside. The second slot 18 and the third slot 19 are internally threaded with a second threaded rod 20. The top of the second threaded rod 20 is fixedly connected with a rod cap 26, and the bottom of the second threaded rod 20 is fixedly connected with a friction block 21. The friction block 21 can fix the slider 2, which is convenient for subsequent observation and data recording.

[0037] In the pinhole imaging experiment, first, slide block 2 is installed on slide rail 1, ensuring it can move freely to adjust its position. During the experiment, the position of slide block 2 on slide rail 1 is adjusted until a clear image appears on the observation screen 24. Once a clear image appears, the rod cap 26 is rotated so that the second threaded rod 20 passes through the second slot 18 and the third slot 19, and through slide block 2 and support plate 3, until the friction block 21 at the bottom of the second threaded rod 20 is in close contact with slide rail 1. The friction force fixes the position of slide block 2, making it easier for the experimenter to view the scale 22 and record the corresponding data. After the experiment, in order to organize and store the teaching aids, the experimenter can rotate the handle 27 again, which will cause slide rail 1 to separate from support box 15, and slide block 2 can slide down slide rail 1. Finally, the experimenter should organize and store the teaching aids to ensure they are in good condition for future use.

[0038] Working principle: When using the demonstration teaching aid, first fix the light source 23, the outer shell 5 and the observation screen 24 on the front, middle and rear support blocks 4 respectively. The two ends of the slide rail 1 are engaged with the grooves 30 opened in the support box 15. Rotate the handle 27 to make the first threaded rod 17 rotate through the first slot 16 and the fourth slot 25 to fix the slide rail 1 and the support box 15. Place the support box 15 horizontally, slide the handle 7 in the first slide groove 6 to make the rotating frame 28 rotate, and the slide rod 9 moves in the second slide groove 8. At the same time, the degree of rotation of the rotating frame 28 is limited. The rotating frame 28 drives the blade 12 through the connecting rod 11, so that the blade 12 rotates around the second connecting column 14 as the axis. The size of the hole 29 is changed by the rotation angle of the blade 12.

[0039] During the pinhole imaging experiment, slider 2 can slide and change position on slide rail 1. When a clear image appears on the observation screen 24, rotate rod cap 26 to allow the second threaded rod 20 to enter the second slot 18 and the third slot 19 and pass through slider 2 and support plate 3 until the friction block 21 at the bottom of the second threaded rod 20 abuts against slide rail 1. The position is fixed, observe the scale 22, record the data, and the experiment ends. Rotate handle 27 again to separate slide rail 1 and support box 15. Slider 2 slides down along slide rail 1. Organize and put away the teaching aid.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A physical optics experiment demonstration teaching aid, comprising a slide rail (1), characterized in that: The slide rail (1) is provided with a support block (4) at the top, and a housing (5) is fixedly connected to the top of the support block (4). An adjustment mechanism is provided inside the housing (5). An observation screen (24) is fixedly connected to the top of the front support block (4), and a light source (23) is fixedly connected to the top of the rear support block (4). A limit component is provided on the side wall of the slide rail (1). The adjustment mechanism includes a rotating frame (28) rotatably connected inside the outer casing (5). A second sliding groove (8) is provided inside the rotating frame (28), and a first sliding groove (6) is provided inside the outer casing (5). A sliding rod (9) is fixedly connected inside the outer casing (5). A handle (7) is fixedly connected to the side wall of the rotating frame (28). The handle (7) is slidably connected inside the first sliding groove (6), and the sliding rod (9) is slidably connected inside the second sliding groove (8). The rotating frame (28) is fixedly connected to a first connecting post (10) on its side wall. The first connecting post (10) is rotatably connected to a connecting rod (11) on its side wall. The connecting rod (11) is rotatably connected to a blade (12) on its side wall. The blade (12) is rotatably connected to a second connecting post (14) on its inside. The bottom of the second connecting post (14) is fixedly connected to an inner ring (13). The inner ring (13) is fixedly connected to the inside of the outer shell (5) on its side wall. The outer shell (5) has a hole (29) on its side wall.

2. The physical optics experiment demonstration teaching aid according to claim 1, characterized in that: The slide rail (1) has a slider (2) slidably connected inside. The slider (2) has a support plate (3) fixedly connected to its side wall. The support plate (3) is fixedly connected to the support block (4). The slide rail (1) has a scale (22) fixedly connected to its side wall.

3. The physical optics experiment demonstration teaching aid according to claim 1, characterized in that: The limiting component includes a support box (15), the support box (15) has a groove (30) inside, and the slide rail (1) is slidably connected inside the groove (30).

4. The physical optics experiment demonstration teaching aid according to claim 3, characterized in that: The support box (15) has a fourth slot (25) on its top, and the slide rail (1) has a first slot (16) on its top.

5. The physical optics experiment demonstration teaching aid according to claim 4, characterized in that: The first slot (16) and the fourth slot (25) are internally threaded with a first threaded rod (17), and a throttle (27) is fixedly connected to the top of the first threaded rod (17).

6. The physical optics experiment demonstration teaching aid according to claim 2, characterized in that: The support plate (3) has a second slot (18) inside, and the slider (2) has a third slot (19) inside.

7. The physical optics experiment demonstration teaching aid according to claim 6, characterized in that: The second slot (18) and the third slot (19) are internally threaded with a second threaded rod (20).

8. The physical optics experiment demonstration teaching aid according to claim 7, characterized in that: The top of the second threaded rod (20) is fixedly connected to a rod cap (26), and the bottom of the second threaded rod (20) is fixedly connected to a friction block (21).

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