Physical optical experiment demonstrator structure

Abstract

The utility model discloses a physical optics experiment demonstrator structure, which comprises a base, an optical screen and a light source, the optical screen is detachably provided with a mirror body, the position between the base and the optical screen is fixed, the base can be adsorbed and fixed on an external blackboard and other structures, and the light source can move around the optical screen and point to the mirror body at a controllable angle. The light source is installed through the swing arm, the whole device can be placed on a blackboard for demonstration operation, the light source and the blackboard are not interfered when the positions are changed, and meanwhile the device can be automatically and accurately positioned and kept stable.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically to a physical optics experiment demonstrator structure. Background Technology

[0002] Demonstration teaching of the characteristics of light propagation is an important part of junior high school physics, which mainly involves the reflection and refraction of light, as well as the reversibility and coplanarity of light paths.

[0003] Due to operational issues, most existing teaching aids can only be placed on the podium, resulting in a limited observation range. Furthermore, the demonstration process with existing tools is cumbersome and lacks precision. For example, when adjusting the principles of light reflection and refraction, the midpoint of the normal is prone to deviation. In addition, although existing light sources can rotate, the fixing method is not secure enough, and they are prone to loosening after long-term use.

[0004] If the light source arrangement can be maintained without affecting the placement of the teaching aid on the blackboard, while ensuring a precise and stable light source pointing angle, the demonstration effect will be improved. Therefore, we propose a physical optics experiment demonstrator structure. Utility Model Content

[0005] The purpose of this invention is to provide a physical optics experiment demonstrator structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a physical optics experiment demonstrator structure, including a base, a screen, and a light source. The screen is detachably mounted with a mirror. To ensure the demonstration effect, the light source is generally a linear light source. The base and the screen are fixed in position. The base can be attached to an external board, which is generally a blackboard / whiteboard. The light source can move around the screen and be directed at the mirror at a controllable angle, thereby demonstrating transmission, reflection, refraction, and other effects. The screen has at least one deflectable folding area, and the change of the folding area demonstrates the characteristic of light propagating in a straight line.

[0007] Preferably, the base and the light screen are fixedly connected by a central axis, and the light source is sleeved on the central axis by a swing arm, thereby ensuring the stable direction of the light source rotation.

[0008] Preferably, the base is equipped with a magnet, which allows it to be placed on the blackboard by magnetic attraction, thereby improving the presentation effect.

[0009] Preferably, the outer side of the light screen is detachably connected to an accessory, such as a water tank.

[0010] Preferably, the detachable connection between the light screen and the mirror body is magnetic, thereby enabling quick disassembly and replacement.

[0011] Preferably, the central axis is fixedly connected to the light screen, and the base is fastened to the central axis, with the two sides of the swing arm being limited by the light screen and the base.

[0012] Preferably, the number of swing arms is at least one. When the number of swing arms is two or more, a bearing is provided between adjacent swing arms. The bearing is sleeved on the central shaft and its two rotating surfaces are in close contact with the sides of the two adjacent swing arms, thereby avoiding interference between them during rotation.

[0013] Preferably, when there are two swing arms, the one closer to the base is the first arm and the other is the second arm, the first swing arm has a positioning protrusion and a positioning groove on the two sides close to the base, and a positioning ball is connected to the positioning groove by a spring. The positioning ball and the positioning protrusion are pressed into contact, so that the angle positioning can be completed.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the structure of this application can achieve the whole being adsorbed onto components such as blackboards without affecting the angle adjustment of the light source, and the light source can stably rotate around the screen when rotating. In addition, the light source can stably maintain the required angle by being mounted on the swing arm, and the light sources on multiple swing arms can rotate without interfering with each other. Attached Figure Description

[0015] Figure 1 This is a perspective view of the front side of the present invention;

[0016] Figure 2 This is a perspective view of the rear side of the present invention.

[0017] Figure 3 This is an exploded view of the swing arm and central axis of this utility model;

[0018] Figure 4 This is a schematic diagram of the base structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the base and swing arm of this utility model;

[0020] Figure 6 This is an exploded view of the present invention;

[0021] Figure 7 This is an exploded view of the present invention;

[0022] Figure 8 This is a structural diagram of the mounting accessories of this utility model.

[0023] In the diagram: 1. Base, 2. Screen, 3. Light source, 4. Mirror body, 5. Central axis, 6. Swing arm, 7. Magnet, 8. Accessory, 9. Bearing, 10. Positioning protrusion, 11. Positioning groove, 12. Spring, 13. Positioning ball. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0025] Please see Figure 1-8 This utility model provides a physical optics experiment demonstrator structure: including a base 1, a screen 2, and a light source 3 (a component for emitting linear light; in the prior art, the light emitted by the light source 3 can be reflected on the screen 2). The screen 2 is detachably mounted with a mirror body 4, and there are various ways to detach them, such as magnetic attraction, screw fixing, etc., and the style of the mirror body 4 is not limited, such as concave lens, convex lens, plane mirror, etc.

[0026] The base 1 and the light screen 2 are fixed in position (i.e., they cannot move relative to each other). The fixing method can be screw connection (when the base 1 and the light screen 2 are made of different materials, such as the base 1 being plastic and the light screen 2 being an iron plate), adhesive bonding, or integral molding (using the same material, such as plastic).

[0027] A magnet is provided on one side of the mirror body 4 so that it can be attached to the screen 2. The screen 2 can be an iron plate or a plastic plate with the magnet embedded in it, so that the detachable connection between the screen 2 and the mirror body 4 is a magnetic connection.

[0028] The base 1 can be attached to an external board, which generally refers to a blackboard, whiteboard, etc. Specifically, the base 1 is equipped with a magnet 7, which uses the magnetic force of the magnet to attach to the blackboard. Alternatively, a suction cup (not shown in the figure, a form of existing technology, which will not be described in detail) can be installed on the base 1, so that it can be attached to some flat objects.

[0029] like Figure 1 The light screen 2 shown is circular (of course, it can also be semicircular, fan-shaped, etc. depending on the actual situation). The light source 3 can move around the arc surface of the outer side of the light screen 2 and point at the mirror body 4 at a controllable angle. According to the experimental requirements of optical demonstration, the pointing point is generally the center of the semicircular light screen 2.

[0030] In addition, to demonstrate that the light path propagates along a plane, the light screen 2 is provided with at least one deflectable folding area 201, i.e., as shown in the figure. Figure 1 As shown, when the folding area 201 is deflected, the light emitted by the light source 3 will not be projected onto this area, which is used to demonstrate the propagation characteristics of light, such as... Figure 3 As shown, the folding area 201 and the screen 2 are hinged together, allowing for a small range of folding as needed. Figure 3 The position indicated by the up arrow can be fitted with a clip or magnetic attachment point to maintain the fixed orientation.

[0031] Currently, there is a method of directly attaching the light source 3 to the screen 2, but this is not easy to operate in practical applications and the effect is not good. Therefore, a method is proposed as follows:

[0032] The base 1 and the light screen 2 are fixedly connected by the central axis 5. The light source 3 is sleeved on the central axis 5 by the swing arm 6 (the light source 3 and the swing arm 6 are fixedly connected by screws and other components). The structure of the swing arm 6 prevents the light source 2 from directly contacting the light screen 2, thus avoiding interference during movement.

[0033] The central axis 5 is fixedly connected to the light screen 2. Specifically, the central axis 5 and the light screen 2 can be integrally formed (of the same material), or they can be connected by screws or other connecting parts.

[0034] Furthermore, the base 1 is securely connected to the central axis 5. The base 1 and central axis 5 can also be integrally formed (of the same material), or connected by screws or other connectors. However, to facilitate the mounting of the swing arm 6 onto the central axis 5, it is not recommended that the central axis 5, the light screen 2, and the base 1 all be integrally formed. Additionally, the swing arm 6 is limited on both sides by the light screen 2 (or the base of the central axis 5) and the base 1, thereby preventing lateral swaying.

[0035] Specifically, the number of the swing arms 6 is at least one, thereby meeting the demonstration requirement of installing at least one light source 3.

[0036] When there are two or more swing arms 6, two swing arms 6 may move at different angles in different directions. To avoid one swing arm moving while the other is disturbed, a bearing 9 is provided between adjacent swing arms 6, i.e. Figure 6 As shown (ball bearings are not shown in the figure), the bearing 9 is sleeved on the central shaft 5 and its two rotating surfaces are in close contact with the sides of the two adjacent swing arms 6 respectively.

[0037] Specifically, when there are two swing arms 6, two light sources 3 can be placed, for example, to simulate incident rays, normals, etc., where the arm closer to the base 1 is the first arm 601, and the other is the second arm 602, as shown. Figure 5-6As shown, the first swing arm 601 has a positioning protrusion 10 and a positioning groove 11 on its two sides close to the base 1, respectively. A positioning ball 13 is connected to the positioning groove 11 by a spring 12. The positioning ball 13 is in pressing contact with the positioning protrusion 10. The shape of the positioning protrusion 10 is as follows. Figure 4 As shown, they are arranged in a circular array. The elastic force of the spring 12 compresses the positioning balls 13, causing them to make tight contact with the positioning protrusions 10, and as... Figure 4-6 The number of positioning grooves 11 and positioning balls 13 shown can be multiple. When the swing arm 6 is rotated, the corresponding positioning ball 13 will move between multiple positioning protrusions 10, and will make a slight collision sound and vibration (which can be felt by the hand). After stopping, the positioning ball 13 is located between two positioning protrusions 10, thus playing a certain role in placement and movement. Compared with the traditional method of pre-tightening with screws, this method has a smoother feel and can also greatly reduce wear caused by sliding friction.

[0038] It should be noted that the positions of the positioning protrusion 10 and the positioning groove 11 are interchangeable; that is, the positioning protrusion 10 can be set on the base 1 or on the first swing arm 601.

[0039] Similarly, the second arm 602 and the seat of the central shaft 5 are also provided with a positioning protrusion 10, a positioning groove 11, a spring 12, and a positioning ball 13.

[0040] In addition, the outer side of the light screen 2 is detachably connected to an accessory 8, such as a transparent water tank, to demonstrate the relevant light path. Similar to the above, the detachable connection method is magnetic attraction, that is, a magnet can be embedded in the accessory 8 to complete the adsorption installation.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A physical optics experiment demonstrator structure comprising a base (1), a light screen (2), a light source (3), the light screen (2) being detachably mounted with a mirror body (4), characterized in that: The base (1) is fixed with the light screen (2), the base (1) can be adsorbed and fixed to the external plate body, the light source (3) can move around the light screen (2) and the controllable angle pointing mirror body (4), and the light screen (2) is provided with at least one deflectable folding area (201).

2. The physical optics demonstrator structure of claim 1, wherein: The base (1) is fixed with the light screen (2) through the middle shaft (5), and the light source (3) is sleeved on the middle shaft (5) through the swing arm (6).

3. The physical optics demonstrator structure of claim 1, wherein: The base (1) is provided with a magnet (7).

4. The physical optics demonstrator structure of claim 1, wherein: The outer side of the light screen (2) is detachably connected with an accessory (8).

5. The physical optics demonstrator structure of claim 1, wherein: The detachable type between the light screen (2) and the mirror body (4) is magnetic type.

6. The physical optics demonstrator structure of claim 2, wherein: The middle shaft (5) is fixedly connected with the light screen (2), and the base (1) is tightly connected with the middle shaft (5), and the swing arm (6) is limited by the light screen (2) and the base (1) on both sides.

7. The physical optics demonstrator structure of claim 6, wherein: The number of the swing arm (6) is at least one, when the number of the swing arm (6) is two or more than two, a bearing (9) is arranged between adjacent swing arms (6), the bearing (9) is sleeved on the middle shaft (5), and two rotating surfaces thereof are tightly attached to the side surfaces of the adjacent two swing arms (6).

8. The physical optics demonstrator structure of claim 7, wherein: When the number of the swing arm (6) is two, the one close to the base (1) is the first swing arm (601), and the other is the second arm (602), the two side surfaces of the first swing arm (601) close to the base (1) are respectively provided with a positioning convex (10) and a positioning groove (11), a positioning ball (13) is connected in the positioning groove (11) through a spring (12), and the positioning ball (13) is in extrusion contact with the positioning convex (10).

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