CN214705142U

CN214705142U - Optical refraction demonstration device

Info

Publication number: CN214705142U
Application number: CN202022586105.3U
Authority: CN
Inventors: 潘用江
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-11-12
Anticipated expiration: 2030-10-31

Abstract

The utility model relates to an optical refraction presentation device in middle school physics teaching specifically includes base, riser, scute, backup pad and the light source module of taking the angle scale. The vertical plate is erected on the base and is provided with a first groove and a second groove, the angle plate is placed in the first groove, and the supporting plate is placed in the second groove; the utility model discloses a scute among the optics refraction presentation device can horizontal migration to the adaptation leads to the removal of incident point because of incident light changes, makes the reading of incident angle and refraction angle not receive the influence that the incident point changes, has improved the demonstration effect of optics refraction theorem.

Description

Optical refraction demonstration device

Technical Field

The utility model relates to a middle school physics teaching device especially relates to a teaching device of refraction phenomenon of demonstration light.

Background

In the junior middle school physics teaching, junior middle school students are the first learning of contact optical basic knowledge, and optical knowledge is relatively abstract knowledge, and understanding of some optical knowledge is difficult, so that the learning effect of the optical knowledge is not ideal. The optical knowledge mainly related to the junior middle school physics includes light straight-line propagation, light reflection and light refraction, wherein the light refraction knowledge is the most difficult to learn, and in the teaching of the light refraction knowledge, a teacher usually dictates some refraction phenomena existing in the natural world, for the teaching of the refraction theorem, a device or an instrument for demonstrating the light refraction phenomena is absent in the existing educational instrument system, and students cannot perceive the relation of angles in the refraction theorem, so that a teaching instrument for demonstrating the refraction theorem is necessary to be invented, so that the understanding of the students on the refraction theorem is deepened, and the learning effect is improved.

Disclosure of Invention

The utility model provides an optics refraction presentation device, this optics refraction presentation device simple structure, convenient operation, optics refraction phenomenon demonstration are clear, can demonstrate the big or small relation and the change law of angle of incidence and refraction in the optics refraction well to can deepen the student to the understanding of refraction theorem, improve the learning effect.

The utility model adopts the following technical scheme:

an optical refraction demonstration device comprises a base, a vertical plate, an angle plate, a light source module, a refraction medium and a supporting plate; the vertical plate is fixed on the base, and a first groove is formed in the middle upper portion of the vertical plate and used for placing an angle plate; the angle plate is in a disc shape, and angle scales are arranged on the front surface of the angle plate; the first groove is a rectangular groove, the upper and lower width of the first groove is equal to the diameter of the angle plate, and the left and right length of the first groove is greater than the diameter of the angle plate, so that the angle plate can be exactly vertically clamped in the first groove and can move left and right; a through groove is formed in the middle of the first groove, a sliding handle and a fixing pin are arranged on the back of the angle plate, one end of the fixing pin is fixed in the center of the back of the angle plate, the other end of the fixing pin penetrates through the through groove and then is fixed in the center of the sliding handle, and the sliding handle is held to enable the sliding handle to move horizontally, so that the angle plate is driven to move horizontally; a supporting plate is arranged below the first groove and used for supporting and fixing a refraction medium; the refraction medium is a cuboid or a cube of transparent glass, the bottom surface of the refraction medium is fixed on the supporting plate, and the top surface of the refraction medium is just positioned at the center of the angle plate; a light source module is arranged at the upper left of the first groove; the light source module comprises a light emitting piece, an LED light source or a laser light source and a lens for collimating light beams are arranged in the light emitting piece, and the lens enables light rays emitted from the light emitting piece to be parallel light beams;

preferably, a second groove is formed in the position, corresponding to the support plate, of the vertical plate, and first through holes are formed in two ends of the second groove; the second groove is used for positioning and fixing the support plate, and the inner side edge of the support plate is inserted into the second groove; the outer side edge of the supporting plate is provided with a baffle plate, the left end and the right end of the supporting plate are provided with second through holes corresponding to the positions of the first through holes, fixing screws penetrate through the second through holes and penetrate through the first through holes, and the back of the vertical plate is fastened with the fixing screws through nuts, so that the supporting plate is fixed on the vertical plate;

preferably, the light source module further comprises a bolt, a fastening spring, and an adjustment handle; the shell of the luminous part is fixedly connected with the bolt, the bolt penetrates through the third through hole on the stand and then is sleeved with the fastening spring, and the end part of the bolt is in threaded connection with the adjusting handle.

The utility model discloses an optics refraction presentation device simple structure, convenient operation can demonstrate optics refraction phenomenon well, the big or small relation and the change law of demonstration incident angle and refraction angle that can understand. Incident light can be conveniently adjusted, so that incident angles with different sizes can be obtained, and the change of the refraction angle along with the change of the incident angles and the change rule of the refraction angle can be demonstrated. The incidence point and the center of the angle plate can be coincident, so that the accurate display of the incidence angle is ensured, and the change of the incidence point caused by the change of the angle of the incident light is not needed to be worried, and the observation of the incidence angle and the refraction angle is influenced.

Drawings

1. Fig. 1 is an overall structure diagram of the optical refraction demonstration apparatus of the present invention;

2. FIG. 2 is a front view of the riser;

3. FIG. 3 is a rear view of the gusset;

4. FIG. 4 is a block diagram of a support plate;

5. FIG. 5 is a structural diagram of a light source module;

Detailed Description

The utility model discloses an optics refraction presentation device includes base 1, riser 2, scute 3, light source module 4, refraction medium 5 and backup pad 6. The vertical plate 2 is fixed on the base 1, a first groove 21 is formed in the middle upper portion of the vertical plate 2, the first groove 21 is used for placing an angle plate 3, the angle plate 3 is in a disc shape, and angle scales are engraved on the front face of the angle plate 3 and used for displaying angles. The first groove 21 is a rectangular groove, the height of the upper part and the lower part of the rectangular groove is approximately equal to the diameter of the angle plate 3, and the left-right length of the first groove 21 is greater than the diameter of the angle plate 3, so that the angle plate 3 can be exactly vertically clamped in the first groove 21, can move left and right, and cannot topple forwards. Through groove 22 has been seted up to the intermediate position of first recess 21, and the back of scute 3 is provided with slip handle 31 and fixed pin 32, the one end of fixed pin 32 is fixed the back center of scute 3, the other end of fixed pin 32 passes through groove 22 after-fixing at the center of slip handle 31, makes it control horizontal migration through controlling slip handle 31 to horizontal migration about the drive angle dish 3 can control, thereby can make the change of the position that angle dish 3 can adapt to optics incident point, makes the incident point of incident light can coincide with the center of angle dish 3, thereby is convenient for the student to watch the big or small relation between the incident angle and the refraction angle in the optics refraction phenomenon.

Below the first recess 21, a support plate 6 is arranged, said support plate 6 being used to support and fix the refractive medium 5. The refraction medium 5 is a cuboid or a cube made of transparent glass, the bottom surface of the refraction medium 5 is fixed on the support plate 6, the top surface of the refraction medium 5 is just positioned at the center of the angle plate 3, namely the top surface of the refraction medium 5 is used as an interface, and the interface is just positioned on the horizontal plane of the center of the angle plate. The incident light is incident on the center of the angle plate and then is refracted into the refraction medium through the top surface (interface) of the refraction medium. A second groove 24 is arranged at the position of the vertical plate 2 corresponding to the support plate 6, and first through holes 23 are arranged at two ends of the second groove 24. The second groove 24 is used for positioning and fixing the support plate 6, and the inner side edge of the support plate 6 is inserted into the second groove 24. The outer side edge of the supporting plate 6 is provided with a baffle plate 62, and the baffle plate 62 is used for preventing the refraction medium 5 from moving towards the outer side edge of the supporting plate 6 and falling off from the supporting plate 6. Second through holes 61 are formed in the positions, corresponding to the first through holes 23, of the left end and the right end of the supporting plate 6, fixing screws penetrate through the second through holes and penetrate through the first through holes, and then the back of the vertical plate is fastened through nuts, so that the supporting plate 6 is fixed on the vertical plate 2.

A light source module 4 is disposed above and to the left of the first groove 21. The light source module 4 includes a light emitting member 41, and the light emitting member 41 includes an LED light source or a laser light source, and an optical system for collimating the light source, where the optical system is a lens or a lens combination; i.e. the light emitted by the light emitting member 41 is a parallel light beam. The shell of the luminous element is fixedly connected with a bolt 42, the bolt 42 is sleeved with a fastening spring 44 after passing through the third through hole 25 on the vertical plate 2, the end part of the bolt is in threaded connection with the adjusting handle, and then the adjusting handle 43 is rotated for threaded fixation, so that the luminous element 41 can be rotated by operating the adjusting handle 43, and the incident angle can be changed; while angular locking is performed by the adjustment handle 43 and the tightening spring 44. When the adjusting handle 43 is operated to rotate the light emitting member 41, the incident point of the incident light on the boundary surface moves on the boundary surface, and in order to make the incident point coincide with the center of the angle plate 3, the sliding handle 31 can be moved to make the angle plate move left and right, so that the center of the angle plate coincides with the incident point, and students can better observe the size relationship and the change rule between the incident angle and the refraction angle when the incident light enters the refraction medium from the incident point and is refracted.

The utility model discloses can be used for demonstrating the refraction phenomenon of light, also can be used for demonstrating the reflection phenomenon of light equally, only need the coating at refraction medium 5's top surface coating high reflectivity to make incident light incide the top surface takes place to reflect, thereby demonstrates the reflection phenomenon of light. Alternatively, a high-reflectivity coating may be applied to the bottom surface of the refractive medium 5, in which case the refractive medium 5 may be used for both purposes, the top surface may be used for light refraction, and the bottom surface may be used for light reflection, and in which case it is only necessary to determine whether the top surface or the bottom surface is used as an interface according to the teaching.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be understood that various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optical refraction demonstration apparatus, characterized by: the device comprises a base, a vertical plate, an angle plate, a light source module, a refraction medium and a supporting plate; the vertical plate is fixed on the base, and a first groove is formed in the middle upper portion of the vertical plate and used for placing an angle plate; the angle plate is in a disc shape, and angle scales are arranged on the front surface of the angle plate; the first groove is a rectangular groove, the upper and lower width of the first groove is equal to the diameter of the angle plate, and the left and right length of the first groove is greater than the diameter of the angle plate, so that the angle plate can be exactly vertically clamped in the first groove and can move left and right; a through groove is formed in the middle of the first groove, a sliding handle and a fixing pin are arranged on the back of the angle plate, one end of the fixing pin is fixed in the center of the back of the angle plate, the other end of the fixing pin penetrates through the through groove and then is fixed in the center of the sliding handle, and the sliding handle is held to horizontally move so as to drive the angle plate to horizontally move; a supporting plate is arranged below the first groove and used for supporting and fixing a refraction medium; the refraction medium is transparent glass in a cuboid or cube shape, the bottom surface of the refraction medium is fixed on the supporting plate, and the top surface of the refraction medium is just positioned at the center of the angle plate; a light source module is arranged at the upper left of the first groove; the light source module comprises a light emitting piece, wherein the light emitting piece internally comprises an LED light source or a laser light source and a lens for collimating light beams, and the lens enables light rays emitted from the light emitting piece to become parallel light beams.

2. An optical refraction presentation device according to claim 1, wherein: a second groove is formed in the position, corresponding to the support plate, of the vertical plate, and first through holes are formed in two ends of the second groove; the second groove is used for positioning and fixing the support plate, and the inner side edge of the support plate is inserted into the second groove; the outer side edge of the supporting plate is provided with a baffle plate, the positions of the left end and the right end of the supporting plate, which correspond to the first through holes, are provided with second through holes, fixing screws penetrate through the second through holes and penetrate through the first through holes, and the back of the vertical plate is fastened with the fixing screws by nuts, so that the supporting plate is fixed on the vertical plate.

3. An optical refraction presentation device according to claim 1, wherein: the light source module further comprises a bolt, a fastening spring and an adjusting handle; the shell of the luminous part is fixedly connected with one end of the bolt, the bolt penetrates through the third through hole in the vertical plate and then is sleeved with the fastening spring, and the other end of the bolt is in threaded connection with the adjusting handle.