CN201156339Y - Convex lens image-forming discipline demonstrator - Google Patents
Convex lens image-forming discipline demonstrator Download PDFInfo
- Publication number
- CN201156339Y CN201156339Y CNU2008200104509U CN200820010450U CN201156339Y CN 201156339 Y CN201156339 Y CN 201156339Y CN U2008200104509 U CNU2008200104509 U CN U2008200104509U CN 200820010450 U CN200820010450 U CN 200820010450U CN 201156339 Y CN201156339 Y CN 201156339Y
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- CN
- China
- Prior art keywords
- convex lens
- utility
- model
- screw
- demonstrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a convex lens imaging law demonstrator which relates to an improved high school physics teaching demonstration instrument. The utility model provides a convex lens imaging law demonstrator with good and intuitive demonstration effect. The utility model comprises a base. A chute, graduation lines and an origin point hole are arranged on the supported slab of the base. A sliding block with a screw is arranged in the chute. A rope which penetrates through the origin point hole is fixed on the screw.
Description
Technical field:
The utility model relates to the improvement of physics teaching in secondary school demonstration device structure.
Background technology:
In physics teaching in secondary school, the convex lens imaging law is the difficult point of teaching always; All be to use optical imaging concept when the teacher explains, with convex lens to candle imaging demonstrate; But because limited time, condition is limited, and the student can not experience the demonstration of convex lens imaging law in person.
The utility model content:
The utility model is exactly at the problems referred to above, provides a kind of demonstration effect fine and convex lens imaging law demonstration device intuitively.
For achieving the above object, the utility model adopts following technical scheme, and the utility model comprises base, and its structural feature is that the support plate of base is provided with slideway, scale mark, initial point hole, be provided with slide block in the slideway, be fixed with the cotton rope that passes the initial point hole on the screw with screw.
The beneficial effects of the utility model:
Can demonstrate intuitively about the convex lens imaging law by instrument of the present utility model to the student; The utility model is simple in structure, good demonstration effect; Be beneficial to student's profound understanding and grasp relevant knowledge, teaching efficiency is good.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
The utility model comprises base 1, and the support plate 2 of base 1 is provided with slideway 3, scale mark 4, initial point hole 5, is provided with the slide block 7 with screw 8 in the slideway 3, is fixed with the cotton rope 6 that passes initial point hole 5 on the screw 8.
Below in conjunction with a description of drawings presentation process of the present utility model:
Adjust screw 8 to certain altitude, on the primary optical axis 9 in 5 left sides, initial point hole of support plate 2, indicate one times of focal length point f, two times of focal length point 2f, indicate corresponding one times of focal length point f ', two times of focal length point 2f ' on the primary optical axis 9 on 5 right sides, initial point hole; When demonstration convex lens 10 imaging laws, make slide block 7 move to suitable position, strain cord 6 then, cord 6 is parallel to primary optical axis 9 and meets at the B point by the light A through one times of focal length point f ' behind the convex lens 10 by screw 8 tops with being marked on the support plate 2, the B point is exactly the picture points of screw 8 tops through 10 one-tenth on convex lens, the B point is the size of imaging perpendicular to the vertical distance of primary optical axis 9.
The utility model can compare big object and wisp imaging, also the distance of slide block 7 and convex lens 10 can be adjusted, and asynchronous imaging compares to object distance, draws object through convex lens 10 imaging law.
Claims (1)
1, convex lens imaging law demonstration device, comprise base (1), the support plate (2) that it is characterized in that base (1) is provided with slideway (3), scale mark (4), initial point hole (5), be provided with the have screw slide block (7) of (8) in the slideway (3), be fixed with the cotton rope (6) that passes initial point hole (5) on the screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200104509U CN201156339Y (en) | 2008-01-24 | 2008-01-24 | Convex lens image-forming discipline demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200104509U CN201156339Y (en) | 2008-01-24 | 2008-01-24 | Convex lens image-forming discipline demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156339Y true CN201156339Y (en) | 2008-11-26 |
Family
ID=40104117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200104509U Expired - Fee Related CN201156339Y (en) | 2008-01-24 | 2008-01-24 | Convex lens image-forming discipline demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156339Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074154A (en) * | 2010-12-31 | 2011-05-25 | 上海师范大学附属第二外国语学校 | Focal point prompt board |
-
2008
- 2008-01-24 CN CNU2008200104509U patent/CN201156339Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074154A (en) * | 2010-12-31 | 2011-05-25 | 上海师范大学附属第二外国语学校 | Focal point prompt board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 |