CN203689789U - Convex lens teaching aid for physics teaching - Google Patents
Convex lens teaching aid for physics teaching Download PDFInfo
- Publication number
- CN203689789U CN203689789U CN201320678750.5U CN201320678750U CN203689789U CN 203689789 U CN203689789 U CN 203689789U CN 201320678750 U CN201320678750 U CN 201320678750U CN 203689789 U CN203689789 U CN 203689789U
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- China
- Prior art keywords
- lens barrel
- teaching
- teaching aid
- clear glass
- convex lens
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- Expired - Fee Related
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Abstract
The utility model discloses a convex lens teaching aid for physics teaching. The teaching aid includes a large lens barrel, a small lens barrel, transparent glass, and an elastic transparent film. The large lens barrel, the small lens barrel, the transparent transparent glass, and the elastic transparent film form a seal chamber which is capable of accommodating liquid. When the transparent transparent glass and the small lens barrel are moved together in the axial direction of the large lens barrel back and forth, the pressure of the gas and the liquid inside the seal chamber is changed, so that the continuous change in curvature of the elastic transparent film is achieved. With the convex lens teaching aid for physics teaching of the utility model, by rotating a rotary knob part, the transparent transparent glass and the small lens barrel can move together in the axial direction of the large lens barrel back and forth, thus the pressure of the gas and the liquid inside the seal chamber is changed, the continuous change in curvature of the elastic transparent film is achieved and the gathering effect can be observed. Furthermore, the convex lens teaching aid is simple in structure and is convenient to operate. A great teaching effect can be obtained in teaching.
Description
Technical field
The utility model belongs to educational aid technical field, relates to a kind of convex lens teaching aid for physical teaching.
Background technology
In physics teaching in secondary school, convex lens model is made by plastics or glass material at present, and the curvature of its convex surface is fixed.If show the impact of convex surface continually varying curvature on the effect of converging to student in teaching, need the convex lens of a lot of different curvature radius to realize, not only realize difficulty, operate also very loaded down with trivial details.Grant number is that the utility model of CN 202306922 U discloses the convex lens that a kind of physics teaching is used, and has solved convex lens and has realized curvature continually varying problem.But there are two problems in the invention of this utility model: the one, and the injection of liquid and discharge pretty troublesome; The 2nd, realize this utility model, need to be in punching on glass, not only critical path upward perforating, also will punch in the axial direction, and due to the fragility of glass, the yield rate of processing is very low.Therefore, the practicality of this teaching aid is very poor.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect, provides one to be easy to realize, easy to operate convex lens teaching aid for physical teaching.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of convex lens teaching aid for physical teaching is provided, by large lens barrel, clear glass, elastic transparent film surrounds annular seal space that can receiving fluids, and clear glass is contained in little lens barrel, and clear glass is contained in large lens barrel together with little lens barrel, little lens barrel and the knob parts that can move forwards, backwards along large barrelshift link together, and rotation knob parts make clear glass and little lens barrel assembly move forwards, backwards along large barrelshift.
The convex lens teaching aid for physical teaching that the utility model provides, by rotation knob parts, can make clear glass and little lens barrel rent contract and move forwards, backwards along large barrelshift, thereby change air pressure and the hydraulic pressure in annular seal space, realize elastic transparent film curvature and change continuously, observe it and converge effect.In addition, this convex lens teaching aid also has feature simple in structure, easy to operate, in teaching, can realize good teaching efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model sectional structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, first elastic transparent film 5 is fixed on large lens barrel 1, inject suitable liquid to elastic transparent film 5 with in the cavity that lens barrel 1 forms greatly, then clear glass 2 is contained in little lens barrel 4 and is fixed, pack into together in large lens barrel 1, thus, large lens barrel 1, elastic transparent film 5, little lens barrel 4, clear glass 2 have formed an annular seal space 6, and the liquid of injection is closed.One knob parts 3 are fixed together with little lens barrel 4, and rotation knob parts 3 can make little lens barrel 4, clear glass 2 axially move forward and backward along large lens barrel 1, thereby change air pressure and the hydraulic pressure in annular seal space 7, realize elastic transparent film 5 curvature and change continuously.
The fixing means of clear glass 2 in little lens barrel 4 is trim ring fixation, or rolling fixation.
Along the circumferential direction open seal groove at little lens barrel 4 outward flanges, sealing strip 7 is fixed in seal groove, the clear glass 2 large lens barrels in edge are justified when within 1 week, direction moves forward and backward, and annular seal space 6 has good sealing.
Although the utility model has been made to detailed description with above-mentioned preferred embodiment, has not limited the utility model with above-described embodiment.Those skilled in the art should recognize in the case of not departing from technical solutions of the utility model given technical characterictic and scope; increase that technical characterictic is done, with the replacement of some same contents of this area, all should belong to protection domain of the present utility model.
Claims (4)
1. a convex lens teaching aid for physical teaching, comprises large lens barrel (1), clear glass (2), elastic transparent film (5); What described large lens barrel (1), clear glass (2), elastic transparent film (5) surrounded can receiving fluids annular seal space (6); It is characterized in that: described clear glass (2) is contained in little lens barrel (4); Described clear glass (2) is contained in large lens barrel (1) together with little lens barrel (4); Described little lens barrel (4) links together with knob parts (3); Rotating described knob parts (3) axially moves forward and backward clear glass (2) and little lens barrel (4) together along large lens barrel (1).
2. convex lens teaching aid for physical teaching according to claim 1, is characterized in that: described clear glass (2) is fixed by trim ring or rolling in little lens barrel (4).
3. convex lens teaching aid for physical teaching according to claim 1, is characterized in that: described knob parts (3) link together with screw or threaded engagement and little lens barrel (4).
4. convex lens teaching aid for physical teaching according to claim 1, is characterized in that: the cylindrical at described little lens barrel (4) along the circumferential direction has seal groove, fixing seal bar (7) in seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678750.5U CN203689789U (en) | 2013-10-31 | 2013-10-31 | Convex lens teaching aid for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678750.5U CN203689789U (en) | 2013-10-31 | 2013-10-31 | Convex lens teaching aid for physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203689789U true CN203689789U (en) | 2014-07-02 |
Family
ID=51011665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320678750.5U Expired - Fee Related CN203689789U (en) | 2013-10-31 | 2013-10-31 | Convex lens teaching aid for physics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203689789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781936A (en) * | 2016-12-27 | 2017-05-31 | 上海宝瓶建筑装饰工程有限公司 | Mirror imaging principle exhibiting device |
-
2013
- 2013-10-31 CN CN201320678750.5U patent/CN203689789U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781936A (en) * | 2016-12-27 | 2017-05-31 | 上海宝瓶建筑装饰工程有限公司 | Mirror imaging principle exhibiting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141031 |
|
| EXPY | Termination of patent right or utility model |