CN2147612Y - Photo transmitting property tracing figure display device - Google Patents

Abstract

The utility model relates to a tracing graphic instrument of light propagation characteristics. A main body is a box body, the circumference of which is closed, and more than two light radiating holes and an observation hole are formed on the box body; the inner wall of the box body is black; a reflecting lens and a particle generating device are arranged in the box body. A light beam is shot into the box body by a purpose-made torch; the direction of shooting is changed; particles of a displaying light path are simultaneously released by making use of the light reflecting performance of the reflecting lens; therefore, the process of light propagation can be traced and observed, the actual light path is directly displayed, and the propagation, the reflection, the diffraction, the superposition and the wave-particle duality of light are visually demonstrated and explained. The utility model has the advantages of simple structure and convenient operation, and is a teaching aid which has the value of scientific education.

Description

Photo transmitting property tracing figure display device

The utility model relates to a kind of optics demonstration teaching aid, and particularly a kind of optical transmission characteristics is followed the tracks of graphic instrument.

Simple in structure, principle is clear, can observe the light communication process, and the footprint of tracking illumination directly shows the multifunctional optical demonstration teaching aid of actual light path, is still blank at present.In the optics teaching, the index path that the student sees all is the chalk setting-out of teacher on blackboard.Some audiovisual aids, directly the actual light path of tracing observation only is to carry out the reasoning demonstration according to the result that light is propagated, and does not reach really effect intuitively.For example, the rectilinear propagation of light experiment, demonstration be that light can only pass through 3 apertures point-blank, and the rectilinear propagation characteristic of bright dipping is imagined in reasoning thus.What the student saw is by dropping on the hot spot on the screen behind 3 apertures, does not see that straight, bright light path runs through the process of three apertures.And this can only demonstrate the rectilinear propagation characteristic of light singlely.The pinhole imaging system that the rectilinear propagation characteristic of light is described is tested, is performed the experiment of reflection of light and rule thereof, also is like this.

The purpose of this utility model provides a kind of simple in structure, principle is clear, phenomenon is directly perceived, easy to operate, energy tracing observation light communication process, the optical transmission characteristics that directly shows actual light path is followed the tracks of graphic instrument, demonstrates and explain propagation, reflection, diffraction, superposition and the wave-particle duality of light in mode the most intuitively.

The purpose of this utility model realizes by following measure: body of the present utility model is the box body of sealing around, inboard wall of cartridge is a black, there are a viewport and at least two to penetrate unthreaded hole on the box body, a reflex reflector lens and a particulate generating means are arranged in the box body.

Box body of the present utility model is rectangular parallelepiped preferably, and penetrating unthreaded hole is two, penetrates the two ends that unthreaded hole and viewport lay respectively at box body, and reflex reflector lens is installed on the medial surface of box body.

Accompanying drawing has provided an embodiment of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing.

As figure, body of the present utility model is the rectangular parallelepiped box body of sealing around, loam cake is openable detachable cap, inboard wall of cartridge is black, one end of box body has two to penetrate unthreaded hole (1), the other end has a viewport (4), on the sidewall in box body a reflex reflector lens (2) is installed, and a particulate generating means (3) is laid in the bight of the box body below viewport.

Use method of operating of the present utility model is as follows.

As with the matching used annex of the utility model, 2 concentration torch should be arranged, a light path conduit is arranged on the electric torch, it can insert and penetrate in the unthreaded hole and can freely rotate in the hole, the direction that enters black box with the change light path.During use, the insertion of light path conduit is penetrated in the unthreaded hole, open flashlight switch, inject light beam, see that by viewport what see only is a slice dark, bright light beam " is swallowed up " by magazine institute.Then the particulate in the particulate generating means is discharged the video picture immediately of straight bright light beam to the magazine space.With the catoptron of a light path trend of purchasing sidewall, can see two input paths in a certain angle and reflected light path; Change incident direction, can see that direction changes and the reflected light path and the continually varying process thereof of changing location with incident angle.Two light paths are penetrated the unthreaded hole from two inject simultaneously, can see two mutual incoherent light paths, regulate two light paths trend, its intersection is met, can see independent separately path of propagating before and after the superposition of two light paths and the superposition thereof.Cut off particle sources, bright light path will be along with the eliminating of particulate " disappearances "--and the light path that becomes clear still exists, this can by the electric torch of opening and pass box space and outside viewport is mapped to box the speck on the screen confirmed that but pleasing light path cannot see.

As the particulate generating means, the simplest is the device that can produce flue dust and so on, and for example stacte, cigarette all can.

The utility model also can carry out the tracing observation of colored light path.

The utility model both can be observed under dark room conditions, also can operate under bright any environment.

Utilize this optical transmission characteristics provided by the utility model to follow the tracks of graphic instrument, the student can take action on one's own and teacher's demonstration synchronously together, proposes the entertaining optical problem of a lot of complexity relevant with experimental phenomena at any time; The width of cloth width of cloth form that teacher's chalk setting-out is drawn by true light self differs, orientation difference, controllable variations, distinct pleasing actual light path substitute, and abstruse optics reason can be observed in the simple experiment that the student oneself operates, explain absolutely clearly.Design ingenious uses that flexibly structure is simple, and principle clear makes to the utlity model has very high education of science value.

Claims (2)

1, a kind of optical transmission characteristics is followed the tracks of graphic instrument, it is characterized in that: the body of this graphic instrument is the box body of sealing around, inboard wall of cartridge is a black, there are a viewport (4) and at least two to penetrate unthreaded hole (1) on the box body, a reflex reflector lens (2) and a particulate generating means (3) are arranged in the box body.

2, optical transmission characteristics according to claim 1 is followed the tracks of graphic instrument, it is characterized in that: the box body of this graphic instrument is a rectangular parallelepiped, penetrating unthreaded hole (1) is two, penetrates the two ends that unthreaded hole (1) and viewport (4) lay respectively at box body, and reflex reflector lens (2) is installed on the medial surface of box body.

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