CN210691777U - A Convex Lens Imaging Comprehensive Demonstration Instrument - Google Patents

Abstract

The utility model relates to a convex lens imaging comprehensive demonstrator, which comprises a base, a drawing module and an imaging module. A sliding groove and a mounting bracket located on one side of the sliding groove are arranged on the base. The drawing module includes a magnetic plate, a demonstration light line and a magnetic attraction. The imaging module includes an imaging box, a convex lens and an imaging plate which are sequentially slidably arranged on the sliding groove. An imaging hole is opened at one end of the imaging box close to the convex lens, and a light source is arranged in the imaging box. The utility model is provided with a drawing module and an imaging module, and the imaging law of the convex lens is demonstrated by the way of simulating the drawing and the way of physical demonstration respectively, and the imaging law of the convex lens is demonstrated by combining the two modes, so that the demonstration effect is more vivid and concrete, and it is more convenient Students understand and improve teaching effectiveness.

Description

A Convex Lens Imaging Comprehensive Demonstration Instrument

technical field

The utility model relates to the technical field of teaching aids, in particular to a convex lens imaging comprehensive demonstration instrument.

Background technique

The law of lens imaging is the core of the geometric optics content in high school. The textbook explores the law of lens imaging through the use of candles and optical benches. In the prior art, teachers often use the drawing method to demonstrate the law of lens imaging. In this way, the demonstration process only needs to draw on the blackboard, the number of teaching materials used is small, and the demonstration process is easy to implement. However, the above-mentioned demonstration The process image is single, boring and difficult to understand, and it is impossible to flexibly change the object distance, which makes the demonstration process abstract and makes it difficult for students to understand better.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problem that the demonstration process of the lens imaging law is abstract and difficult to understand, the utility model provides a comprehensive demonstration instrument for convex lens imaging with a concrete demonstration process and easy understanding for students.

The utility model discloses a convex lens imaging comprehensive demonstrator, comprising: a base, a drawing module and an imaging module; a sliding groove and a mounting bracket on one side of the sliding groove are arranged on the base; the drawing module includes a magnetic plate, a demonstration light line and Magnetic attraction piece, the magnetic plate is installed vertically on the mounting bracket, the demonstration optical axis is set on the magnetic plate, the rotation center of the demonstration optical line overlaps with the origin of the demonstration optical axis, the magnetic attraction piece is adsorbed on the magnetic plate, and the top of the magnetic attraction piece is connected by a connection The imaging module includes an imaging box, a convex lens and an imaging plate that are slidably arranged on the sliding groove in sequence. The imaging box is provided with an imaging hole at one end close to the convex lens, and a light source is arranged in the imaging box.

According to an embodiment of the present invention, a colored filter film is arranged in the imaging hole.

According to an embodiment of the present invention, the light source adopts a flashlight.

According to an embodiment of the present invention, the imaging hole is matched with the magnetic attraction.

According to an embodiment of the present invention, the imaging plate is provided with a contrast piece matched with the magnetic attraction piece.

The convex lens imaging comprehensive demonstrator of the utility model is provided with a drawing module and an imaging module, and the imaging law of the convex lens is demonstrated by the way of simulating the drawing and the way of physical demonstration respectively, and the imaging law of the convex lens is demonstrated by the combination of the two modes, so that the demonstration effect is achieved. More vivid and specific, more convenient for students to understand, and improve teaching effect.

Description of drawings

FIG. 1 is a schematic structural diagram of a convex lens imaging comprehensive demonstrator in the utility model.

FIG. 2 is a schematic structural diagram of a base in the present invention.

FIG. 3 is a schematic structural diagram of an imaging box in the utility model.

FIG. 4 is a schematic structural diagram of an imaging plate in the present invention.

Fig. 5 is a demonstration schematic diagram of a convex lens imaging comprehensive demonstrator of the present invention.

Detailed ways

The present invention will be further described in detail with reference to specific embodiments and accompanying drawings.

Please refer to FIGS. 1 to 5, which are a schematic diagram of the structure of the convex lens imaging comprehensive demonstrator, the structural schematic diagram of the base, the structural schematic diagram of the imaging box, the structural schematic diagram of the imaging plate and the demonstration schematic diagram of the convex lens imaging comprehensive demonstrator in the present invention.

The utility model provides a convex lens imaging comprehensive demonstration instrument, which mainly includes a base 10, a drawing module 20 and an imaging module 30, wherein the drawing module 20 mainly demonstrates the lens imaging law by simulating a drawing demonstration mode, and the imaging module 30 The imaging law of the lens is mainly demonstrated through the physical demonstration mode, and the imaging law of the convex lens is demonstrated through the combination of the two modes, which makes the demonstration effect more vivid and concrete, and is more convenient for students to understand.

Specifically, the base 10 is provided with a sliding slot 101 and a mounting bracket 102 on one side of the sliding slot 101 .

The drawing module 20 includes a magnetic plate 201 , a demonstration light bar 202 and a magnetic attraction piece 203 . The magnetic plate 201 is vertically arranged on the mounting bracket 102, and a demonstration optical axis 2011 is arranged on the magnetic plate 201, wherein the rotation center of the demonstration optical axis 202 overlaps with the origin of the demonstration optical axis 2011, so that the demonstration optical axis 202 always passes through the demonstration optical axis 2011. origin. The magnetic attraction piece 203 is adsorbed on the magnetic plate 201, wherein the magnetic attraction piece 203 can be in a shape that is easy to understand, such as a rectangle, a tree shape or an arrow shape. Therefore, when the magnetic attraction piece 203 is moved, the demo light line 202 can be driven to rotate, and the demo light line 202 can always pass through the origin of the demo light axis 2011 from the top of the magnetic attraction piece 203 .

The imaging module 30 includes an imaging box 301 , a convex lens 302 and an imaging plate 303 slidably arranged on the sliding slot 101 in sequence. The bottom of the imaging box 301 , the convex lens 302 and the imaging plate 303 can be provided with a sliding bracket matching the sliding slot 101 . The sliding bracket moves on the sliding groove 101 to adjust the distance between the imaging box 301 , the convex lens 302 and the imaging plate 303 . One end of the imaging box 301 close to the convex lens 302 is provided with an imaging hole 3011, and the imaging box 301 is provided with a light source 3012. Specifically, the light source 3012 adopts a flashlight, which is more convenient for the realization of the imaging module 30 and reduces the product design cost. In this application, the imaging plate 303 may be an acrylic plate.

The demonstration optical axis 2011 has a vertical main optical axis 2011A and a horizontal main optical axis 2011B that are perpendicular to each other. The longitudinal main optical axis 2011A simulates a convex lens, and the origin of the demonstration optical axis 2011 simulates the optical center of the convex lens. The horizontal main optical axis 2011B is marked on the There are integral multiples of the focal length to identify the point 2011C.

When using the convex lens imaging comprehensive demonstrator of the present invention for demonstration, the drawing module 20 is used for demonstration, and a line parallel to the transverse main optical axis 2011B, passing through the top of the magnetic attraction piece 203 and then passing through the longitudinal main optical axis 2011 is drawn on the demonstration optical axis 2011. After the axis 2011A is refracted, the auxiliary ray 2011D passes through the focal length marking point 2011C with one focal length, and the focal point of the demonstration ray line 202 and the auxiliary ray 2011D is the image point. The imaging module 30 performs a demonstration, the light source 3012 is turned on, and the light passes through the imaging hole 3011 of the imaging box 301 and then passes through the convex lens 302 to form an image on the imaging plate 303. By adjusting the distance between the imaging box 301, the convex lens 302 and the imaging plate 303, the adjustment The imaging box 301 , the convex lens 302 and the imaging plate 303 correspond to the magnetic attraction member 203 , the longitudinal main optical axis 2011A and the image 2011E of the drawing module 20 respectively, so as to verify the imaging principle of the convex lens.

In order to make the imaging effect of the imaging module 20 clearer, a colored filter film 3013 is arranged in the imaging hole 3011 . For example, the colored filter film 3013 adopts colors such as red, green, blue, and yellow, so that the light from the light source 3012 passes through the colored filter film 3013 The image on the imaging plate 303 has color, which is more convenient to observe the image and effectively improves the demonstration effect.

In order to further improve the demonstration effect of the convex lens imaging comprehensive demonstrator, the imaging hole 3011 is matched with the magnetic element 203. In other words, the shape and size of the imaging hole 3011 are matched with the magnetic element 203. In this way, the imaging module 30 is matched with the magnetic element 203. The imaging results of the drawing module 20 are more matched, thereby effectively improving the demonstration effect and making it easier for students to understand. It is also worth noting that the imaging plate 303 is also provided with a contrast member 3031 that matches the magnetic attraction member 203. In other words, the comparison document 3031 matches the magnetic attraction member 203 in shape and size, which can also be understood as the contrast document 3031 and the imaging hole. The shapes and sizes of the 3011 are matched, for example, the magnetic attraction member 203, the imaging hole 3011, and the contrast member 3031 all use arrows with the same shape and size, which further enhances the demonstration effect.

To sum up, the convex lens imaging comprehensive demonstrator of the present utility model is provided with a drawing module and an imaging module, respectively, to demonstrate the convex lens imaging law by means of simulated drawing and physical demonstration. Demonstration makes the demonstration effect more vivid and concrete, which is easier for students to understand and improves the teaching effect.

In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" ", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Although the description of the present invention is carried out in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Accordingly, all such substitutions, modifications and changes are included within the spirit and scope of the present invention.

Claims (5)

1. a convex lens imaging comprehensive demonstrator is characterized in that, comprising: base, drawing module and imaging module, described base is provided with sliding groove and the mounting bracket positioned on one side of described sliding groove, and described drawing module comprises A magnetic board, a demonstration light bar and a magnetic attraction piece, the magnetic board is vertically arranged on the mounting bracket, a demonstration optical axis is arranged on the magnetic plate, the demonstration light bar is rotatably arranged on the magnetic board, the The center of rotation of the demonstration light line overlaps with the origin of the demonstration optical axis, the magnetic element is adsorbed on the magnetic plate, and the top of the magnetic element is sleeved on the demonstration light line through a connecting piece, and the imaging The module includes an imaging box, a convex lens and an imaging plate that are slidably arranged on the sliding groove in sequence, an imaging hole is opened at one end of the imaging box close to the convex lens, and a light source is arranged in the imaging box. 2 . The convex lens imaging comprehensive demonstrator according to claim 1 , wherein a colored filter film is arranged in the imaging hole. 3 . 3 . The convex lens imaging comprehensive demonstrator according to claim 1 , wherein the light source adopts a flashlight. 4 . 4. The convex lens imaging comprehensive demonstrator according to claim 1, wherein the imaging hole is matched with the magnetic element. 5. The convex lens imaging comprehensive demonstrator according to any one of claims 1 to 4, wherein the imaging plate is provided with a contrast piece matched with the magnetic attraction piece.

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