CN2765272Y

CN2765272Y - Reflection demonstration teaching instrument with light path display

Info

Publication number: CN2765272Y
Application number: CN 200520080122
Authority: CN
Inventors: 付丽娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-12
Filing date: 2005-01-12
Publication date: 2006-03-15
Anticipated expiration: 2015-01-12

Abstract

The utility model discloses a light path display reflection demonstration teaching instrument, which is composed of a base plate 1, a plane mirror 6, a semiconductor laser illuminator 2 and a battery box. The upper surface of the plane mirror 6 is fixed with a semicircular optically denser medium plate 4. The external side of the arc-shaped edge of the semicircular optically denser medium plate 4 is provided with a semicircular slide track 3. A guiding slide sleeve of the semiconductor laser illuminator 2 is sheathed on the semicircular slide track 3. The back surface of the semiconductor optically denser medium plate 4 is pasted with an angle scale plate 5. The light path display reflection demonstration teaching instrument not only has the advantages of simple structure and convenient operation, but also can vividly display light ray propagation paths and objectively display the interrelationship between an incident ray, a reflection ray and a normal line, which is more important. The demonstration effect is good, and the learning quality of students can be improved.

Description

Light path shows reflection teaching demonstration instrument

Technical field

The utility model relates to a kind of physics teaching utensil, and specifically a kind of light path shows reflection teaching demonstration instrument.

Background technology

In the existing junior physics textbook, reflection of light is mainly told about by the experience of life, relatively the cavity is abstract, the student is difficult for understanding, interesting in order to increase teaching, need do the experiment of some reflection aspects, these experiments generally all are with light reflection mirror light to be reflected, the light that a direction is come reflexes on another direction, and cooperate and to tell about, its weak point is: only can demonstrate light and reflex to another direction from a direction, can't observe the travel path of light, and the angle of reflection, reflection ray, the relation of incident ray and normal is so the demonstration effect is relatively poor.

Summary of the invention

The purpose of this utility model is to provide a kind of can show the light travel path, and can objective explanation reflection ray, the light path of the relation between the incident ray, normal shows reflection teaching demonstration instrument.

For reaching above purpose, the technical scheme that the utility model adopted is: this light path shows reflection teaching demonstration instrument, by bedplate, planar optics, semiconductor laser light emitting device and battery case constitute, bedplate is the rectangle plank, planar optics is strip, be embedded in bedplate above, battery case is fixed on the rear portion of semiconductor laser light emitting device housing, it is characterized in that on planar optics, fixing first circular optically denser medium plate, semicircle slide rail is established in the outside, arc limit at semicircle optically denser medium plate, the guide sleeve of semiconductor laser light emitting device is set on the semicircle slide rail, and can slide along semicircle slide rail, paste the upper angle scaleplate in the back of semicircle optically denser medium plate.The utility model is also implemented by following measure: the thickness of described semicircle optically denser medium plate is 5-10cm, radius is 50-120cm, be the polymer based nanocomposites transparent body, can form by compositions such as acrylate, nano powder, coupling agents, after earlier nano powder being carried out modification with coupling agent, mix with acrylate again, after fully disperseing (as ultrasonic dispersing), form the colloidal dispersion system of solid-liquid two-phase, through photocuring or thermal polymerization, make transparent polymer base nano complex, be the semicircle tabular; Described semicircle slide rail is the solid flat plate of an arc, and its radius of the radian is than the big 5cm of radius of semicircle optically denser medium plate, and two ends are fixed on the bedplate at planar optics two ends, and the center of circle of semicircle slide rail overlaps with the center of circle of semicircle optically denser medium plate; Described semiconductor laser light emitting device is a prior art, is fixed on the semicircle slide rail by directed sliding sleeve, makes light head point to the center of circle all the time; The angle index plate is semicircle plank, the little 1-2cm of radius of the semicircle slide rail of its radius ratio, in the middle of the front of angle index plate, be carved with a perpendicular line, pass the center of circle, with the expression normal, on the semi-circle edge of angle index plate from perpendicular line to the monosymmetric angle line that carves, incident angle and reflection angle can intuitively be read.When using the utility model, only need open the semiconductor laser light emitting device, it is emitted beam, light is the directive center of circle all the time, again through the reflection of planar optics, can clearly show incident path, the reflection paths of light, slip semiconductor laser light emitting device, change incident angle, by many groups experimental data, the relation between checking incident angle, reflection angle, the normal.

The beneficial effects of the utility model are: compare with the light reflection teaching aid of present use, not only simple in structure, and it is easy to operate, the more important thing is and to show the light travel path clearly, the mutual relationship that shows incident ray, reflection ray and normal objectively, good demonstration effect can improve student's learning quality.

Description of drawings

Fig. 1 is a structure front-view schematic diagram of the present utility model.

Fig. 2 is a structure schematic top plan view of the present utility model.

Fig. 3 is the A-A cross-sectional schematic of the utility model along Fig. 2.

Embodiment

Make the utility model with reference to accompanying drawing 1,2,3.This light path shows reflection teaching demonstration instrument, by bedplate 1, planar optics 6, semiconductor laser light emitting device 2 and battery case constitute, bedplate 1 is the rectangle plank, planar optics 6 is strip, be embedded in bedplate 1 above, battery case is fixed on the rear portion of semiconductor laser light emitting device 2 housings, it is characterized in that on planar optics 6, fixing first circular optically denser medium plate 4, semicircle slide rail 3 is established in the outside, arc limit at semicircle optically denser medium plate 4, the guide sleeve of semiconductor laser light emitting device 2 is set on the semicircle slide rail 3, and can slide along semicircle slide rail 3, paste upper angle scaleplate 5 in the back of semicircle optically denser medium plate 4.The thickness of described semicircle optically denser medium plate 4 is 5-10cm, radius is 50-120cm, be the polymer based nanocomposites transparent body, can form, after elder generation carries out modification with nano powder with coupling agent by compositions such as acrylate, nano powder, coupling agents, mix with acrylate again, after fully disperseing (as ultrasonic dispersing), form the colloidal dispersion system of solid-liquid two-phase, through photocuring or thermal polymerization, make transparent polymer base nano complex, be the semicircle tabular; Described semicircle slide rail 3 is the solid flat plate of an arc, and its radius of the radian is than the big 5cm of radius of semicircle optically denser medium plate 4, and two ends are fixed on the bedplate 1 at planar optics 6 two ends, and the center of circle of semicircle slide rail 3 overlaps with the center of circle of semicircle optically denser medium plate 4; Described semiconductor laser light emitting device 2 is a prior art, is fixed on the semicircle slide rail 3 by directed sliding sleeve, makes light head point to the center of circle all the time; Angle index plate 5 is semicircle plank, the little 1-2cm of radius of the semicircle slide rail 3 of its radius ratio, in the middle of the front of angle index plate 5, be carved with a perpendicular line, pass the center of circle, with the expression normal, on the semi-circle edge of angle index plate 5 from perpendicular line to the monosymmetric angle line 7 that carves, incident angle and reflection angle can intuitively be read.

Claims

1, a kind of light path shows reflection teaching demonstration instrument, by bedplate (1), planar optics (6), semiconductor laser light emitting device (2) and battery case constitute, bedplate (1) is the rectangle plank, planar optics (6) is strip, be embedded in bedplate (1) above, battery case is fixed on the rear portion of semiconductor laser light emitting device (2) housing, it is characterized in that on planar optics (6), fixing first circular optically denser medium plate (4), semicircle slide rail (3) is established in the outside, arc limit at semicircle optically denser medium plate (4), the guide sleeve of semiconductor laser light emitting device (2) is set on the semicircle slide rail (3), pastes upper angle scaleplate (5) in the back of semicircle optically denser medium plate (4).

2, light path according to claim 1 shows reflection teaching demonstration instrument, and the thickness that it is characterized in that described semicircle optically denser medium plate (4) is 5-10cm, and radius is 50-120cm, is the semicircle tabular; Semicircle slide rail (3) is the solid flat plate of an arc, and two ends are fixed on the bedplate (1) at planar optics (6) two ends, and the center of circle of semicircle slide rail (3) overlaps with the center of circle of semicircle optically denser medium plate (4).

3, light path according to claim 1 shows reflection teaching demonstration instrument, it is characterized in that described angle index plate (5) is semicircle plank, in the middle of the front of angle index plate (5), be carved with a perpendicular line, pass the center of circle, on the semi-circle edge of angle index plate (5) from perpendicular line to the monosymmetric angle line (7) that carves.