Polarized light demonstration instrument

Abstract

The utility model belongs to the technical field of optical education auxiliary equipment, and particularly relates to a polarized light demonstration instrument, which comprises a shading cylinder, and is characterized in that one end of the shading cylinder is connected with a lampshade, a bulb is arranged in the lampshade, the outside of the lampshade is connected with a motor, the other end of the motor and the other end of the shading cylinder are connected with a support, and the support is connected with a display screen. A polarizer is arranged in the shading cylinder; the other end of the shading cylinder is provided with a mobile phone, and a lens of the mobile phone is provided with an analyzer. Through cooperative use of the polarizer and the analyzer and in combination with the precise layout in the shading cylinder, the device can effectively demonstrate the property of polarized light and the Malus law; according to the design, the light intensity change of the polarized light along with the angle change is visually displayed, so that the original abstract physical phenomenon becomes visual and easy to understand, and the teaching effect and the interest of learners are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical education auxiliary equipment, and in particular relates to a polarized light demonstrator. Background Art

[0002] In physical optics, the polarization of light is an important research topic, which involves the characteristics of the vibration direction of light waves. Malus's law is a basic law that describes the change of polarized light intensity with polarization angle, which is crucial for understanding and teaching the polarization properties of light. However, traditional teaching methods and demonstration devices often cannot intuitively demonstrate this law, making it difficult for students to understand and master the relevant knowledge of polarized light.

[0003] The polarization light demonstrators currently on the market have the following main problems: first, the demonstration device is too complicated and difficult for students to understand and operate; second, the cost is high and not easy to popularize; third, the demonstration effect is not intuitive enough and cannot effectively show the dynamic change process of polarization light. These problems have seriously affected the effect and efficiency of polarization light teaching.

[0004] In view of this, it is particularly urgent to develop a teaching auxiliary device that is easy to understand, low-cost and can intuitively display the phenomenon of polarized light. The device should be able to clearly demonstrate Malus's law, allowing students to understand the properties of polarized light through an intuitive dynamic process, thereby improving teaching effectiveness and learning interest. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a polarized light demonstrator, which can clearly demonstrate Malus' law and enable students to understand the properties of polarized light through an intuitive dynamic process.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A polarized light demonstration instrument, comprising a light-shielding tube, the technical key points of which are: a lampshade is connected to one end of the light-shielding tube, a light bulb is arranged inside the lampshade, and a motor is connected to the outside of the lampshade, the motor and the other end of the light-shielding tube are both connected to a bracket, and a polarizer is arranged inside the light-shielding tube;

[0008] A mobile phone is arranged at the other end of the light-shielding tube, and a polarizer is arranged at the lens of the mobile phone.

[0009] Furthermore, a retaining ring is provided inside the light-shielding tube, and the polarizer is attached to the retaining ring.

[0010] Furthermore, a lamp holder is provided inside the lampshade, and the light bulb is mounted on the lamp holder.

[0011] Furthermore, a connection seat is provided outside the lampshade, and the output shaft of the motor is plugged into the connection seat.

[0012] Furthermore, the bracket includes a fixed tube, a telescopic rod is inserted into the top of the fixed tube, and the bottom of the fixed tube is fixedly connected to a base, the top of the telescopic rod is connected to a fixed clamp, and a movable clamp is arranged on the top of the fixed clamp, and the movable clamp and the fixed clamp are connected by bolts.

[0013] Furthermore, both ends of the fixed clamp are fixedly connected to the first connecting plate, and both ends of the movable clamp are fixedly connected to the second connecting plate, and through holes are penetrated through the first connecting plate and the second connecting plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By using a polarizer and an analyzer in combination with the precise layout inside the light-shielding tube, the device can effectively demonstrate the properties of polarized light and Malus's law. This design intuitively demonstrates the change in the intensity of polarized light as the angle changes, making the originally abstract physical phenomenon intuitive and easy to understand, greatly improving the teaching effect and learners' interest. By simplifying the demonstration method of polarized light phenomena, the utility model reduces the difficulty of understanding physical optics concepts, allowing students to more easily grasp and understand the polarization characteristics of light.

[0016] The polarized light demonstration instrument of the utility model drives the lampshade and the polarizer inside the light-shielding tube to rotate at a constant speed through a motor, thereby realizing the continuous change of the polarized light angle and providing a dynamic observation effect for the observer. This dynamic demonstration method not only makes the demonstration of Malus's law more vivid and intuitive, but also enhances the teaching interactivity, which helps to improve students' learning interest and teaching efficiency. Compared with the traditional static demonstration method, the dynamically changing polarized light display method can better attract students' attention and make the teaching process more vivid and interesting.

[0017] Through the carefully designed support structure, the height and angle of the device can be adjusted as needed, so that the demonstrator is not only suitable for different teaching occasions, but also can be optimized and adjusted according to the specific needs of the observer. This improvement in flexibility and adaptability further expands the scope of application of the present invention and ensures that the best demonstration effect can be obtained in different environments. At the same time, the design also simplifies the operation process and reduces the difficulty of use, making the demonstrator not only suitable for professional physical optics teaching, but also suitable for popular science education and autonomous learning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2This is a schematic diagram of the split structure of the utility model;

[0020] Figure 3 This is a structural schematic diagram of the utility model light-shielding tube;

[0021] Figure 4 The structure of the lampshade of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 5 The structure of the lampshade of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 6 It is a structural schematic diagram of the bracket of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Light shielding tube; 11. Retaining ring;

[0026] 2. Lampshade; 21. Lamp holder; 22. Connecting socket;

[0027] 3. Motor;

[0028] 4. Bracket; 41. Fixed tube; 42. Telescopic rod; 43. Base; 44. Fixed clamp; 441. First connecting plate; 45. Active clamp; 451. Second connecting plate;

[0029] 5. Mobile phone;

[0030] 6. Analyzer;

[0031] 7. Light bulb;

[0032] 8. Polarizer. DETAILED DESCRIPTION

[0033] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0034] See also Figure 1-6A polarized light demonstrator includes a light-shielding tube 1, one end of which is connected to a lampshade 2, a light bulb 7 is arranged inside the lampshade 2, and a motor 3 is connected to the outside of the lampshade 2. The motor 3 and the other end of the light-shielding tube 1 are both connected to a bracket 4, and a polarizer 8 is arranged inside the light-shielding tube 1; the function of the polarizer 8 is to generate polarized light, providing a basis for demonstrating the polarized light phenomenon. A mobile phone 5 is arranged at the other end of the light-shielding tube 1, and an analyzer 6 is arranged at the lens of the mobile phone 5; the analyzer 6 is used to analyze the light polarized by the polarizer 8, and cooperates with the mobile phone 5, through the physical optical sensor and the software phyphox, it can intuitively display the relationship between light intensity and time, thereby demonstrating Malus's law.

[0035] See also Figure 1-3 A retaining ring 11 is provided inside the light-shielding tube 1, and the polarizer 8 is attached to the retaining ring 11; the setting of the retaining ring 11 ensures that the polarizer 8 is fixed in the light-shielding tube 1, ensures the consistency of the direction of the polarized light, and thus improves the accuracy and repeatability of the demonstration.

[0036] See also Figure 4 The lampshade 2 is provided with a lamp holder 21 inside, and the bulb 7 is mounted on the lamp holder 21; the bulb 7 is used as a light source to provide light required for demonstration. The design of the lampshade 2 not only protects the bulb 7, but also ensures the concentration and directionality of the light, and cooperates with the polarizer 8 to produce polarized light.

[0037] See also Figure 1 , Figure 2 and Figure 5 A connecting seat 22 is provided on the outside of the lampshade 2, and the output shaft of the motor 3 is plugged into the connecting seat 22; the introduction of the motor 3 is to drive the lampshade 2 and the polarizer 8 in the shading tube 1 to rotate at a constant speed. This design enables the angle of polarized light to change continuously, thereby dynamically demonstrating the effect of Malus's law, thereby enhancing the intuitiveness and interactivity of teaching.

[0038] See also Figure 6 The bracket 4 includes a fixed tube 41, a telescopic rod 42 is inserted at the top of the fixed tube 41, and a base 43 is fixedly connected to the bottom of the fixed tube 41. A fixed clamp 44 is connected to the top of the telescopic rod 42, and a movable clamp 45 is arranged on the top of the fixed clamp 44. The movable clamp 45 and the fixed clamp 44 are connected by bolts; such a structural design allows the bracket 4 to adjust the height and angle to adapt to different demonstration environments and observation positions, thereby improving the applicability and flexibility of the device.

[0039] See also Figure 6Both ends of the fixed clamp 44 are fixedly connected to the first connecting plate 441, and both ends of the movable clamp 45 are fixedly connected to the second connecting plate 451, and through holes are opened on the first connecting plate 441 and the second connecting plate 451; through this design, the bracket 4 can be firmly connected to the light-shielding tube 1 and the motor 3, ensuring the stability of the entire device during operation, avoiding data errors caused by shaking of the device, and ensuring the accuracy and repeatability of the demonstration effect.

[0040] The working principle of the utility model is:

[0041] When in use, the motor 3 drives the lampshade 2 to rotate at a constant speed. As the lampshade 2 rotates, the light shielding tube 1 rotates at a constant speed synchronously, thereby driving the polarizer 8 installed inside the light shielding tube 1 to rotate at a constant speed; at the same time, the analyzer 6 is fixed, so a relative difference angle is generated between the polarizer 8 and the analyzer 6;

[0042] The time of uniform rotation is proportional to the relative angular displacement. At the same time, the physical optical sensor on the mobile phone 5 receives the light emitted by the bulb 7, and the curve of time and light intensity can be obtained through the software phyphox; thus, it is more convenient to demonstrate and study Malus's law; in addition, this device makes Malus's law more intuitive and clear, and it is easy to obtain materials, cheap to make, and can be a good auxiliary teaching.

[0043] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A polarized light demonstration instrument, comprising a light-shielding tube (1), characterized in that: One end of the light-shielding tube (1) is connected to a lampshade (2), a light bulb (7) is arranged inside the lampshade (2), and a motor (3) is connected to the outside of the lampshade (2), the other end of the motor (3) and the light-shielding tube (1) are both connected to a bracket (4), and a polarizer (8) is arranged inside the light-shielding tube (1); A mobile phone (5) is arranged at the other end of the light-shielding tube (1), and a polarizer (6) is arranged at the lens of the mobile phone (5).

2. A polarized light demonstrator according to claim 1, characterized in that: A retaining ring (11) is provided inside the light-shielding cylinder (1), and the polarizer (8) is attached to the retaining ring (11).

3. A polarized light demonstration instrument according to claim 1, characterized in that: A lamp holder (21) is provided inside the lampshade (2), and the light bulb (7) is mounted on the lamp holder (21).

4. A polarized light demonstration instrument according to claim 3, characterized in that: A connecting seat (22) is provided outside the lampshade (2), and an output shaft of the motor (3) is plugged into the connecting seat (22).

5. A polarized light demonstration instrument according to claim 1, characterized in that: The bracket (4) comprises a fixed tube (41), a telescopic rod (42) is inserted into the top of the fixed tube (41), and a base (43) is fixedly connected to the bottom of the fixed tube (41), a fixed clamp (44) is connected to the top of the telescopic rod (42), a movable clamp (45) is arranged on the top of the fixed clamp (44), and the movable clamp (45) and the fixed clamp (44) are connected by bolts.

6. A polarized light demonstration instrument according to claim 5, characterized in that: Both ends of the fixed clamp (44) are fixedly connected to a first connecting plate (441), and both ends of the movable clamp (45) are fixedly connected to a second connecting plate (451), and through holes are provided through the first connecting plate (441) and the second connecting plate (451).

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