CN201877052U - Imaging demonstration instrument for convex lens - Google Patents
Imaging demonstration instrument for convex lens Download PDFInfo
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- CN201877052U CN201877052U CN2010206519211U CN201020651921U CN201877052U CN 201877052 U CN201877052 U CN 201877052U CN 2010206519211 U CN2010206519211 U CN 2010206519211U CN 201020651921 U CN201020651921 U CN 201020651921U CN 201877052 U CN201877052 U CN 201877052U
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- convex lens
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Abstract
The utility model belongs to the technical field of physics teaching tools used in middle schools and particularly relates to an imaging demonstration instrument for a convex lens. The technical scheme is that: the imaging demonstration instrument for the convex lens comprises a base, a longitudinal sliding chute, a plurality of slide blocks, a convex lens, a screen and a light source, wherein the longitudinal sliding chute is formed on the upper part of the base; the slide blocks are positioned in the sliding chute; the convex lens is connected with the slide blocks respectively; the screen and the light source are positioned on both sides of the convex lens; the slide block between the convex lens and the light source is connected with a light path block; one side face of the light path block close to the light source is provided with a light hole; and the light hole is connected with three light paths, i.e. a light path I which passes through a light center, a light path II which is parallel to a main optical axis and a light path III which passes through a focal point. In the technical scheme, a drawing method which uses three special light rays and a demonstration method are combined well, a light ray transmission process and an image forming process are demonstrated and an imaging rule is displayed easily and clearly, so that teachers demonstrate and explain clearly and students understand and grasp easily.
Description
Technical field
The utility model belongs to physics teaching in secondary school teaching aid technical field, relates in particular to a kind of convex lens image-forming demonstration instrument.
Background technology
In the teaching of middle school physical optics part, serve as a teacher when lecturing the convex lens imaging law, usually with the light source that is positioned on the same axis, convex lens and screen, behind mobile light source or the screen, present distinct image at screen, while illustrates not rule of convex lens imaging in conjunction with the graphing method of three special light again, make the student from existing opinion and practice, grasp the principle of convex lens imaging, but because demonstration and graphing method are separated, teacher is that woods is demonstrated writing on the blackboard graphing method again in the teaching, and workload is big, and the student also is not easy demonstration and graphing method are well combined, understand badly, the knowledge point is held in difficult support.
Summary of the invention
The purpose of this utility model is, overcome the deficiencies in the prior art, a kind of convex lens image-forming demonstration instrument is provided, this technical scheme is utilizing the graphing method of three special light and the method for demonstration well to combine, the communication process of demonstration light, as forming process, and show imaging law, simple and clear, teacher's demonstration and explanation understand that the student understands easily and grasps.
For solving the problems of the technologies described above, the technical solution of the utility model is: convex lens image-forming demonstration instrument, comprise: base, vertical chute on base top, be positioned at a plurality of slide blocks of chute, convex lens that are connected with slide block and be positioned at the screen and the light source of convex lens both sides respectively, on the slide block between convex lens and the light source, be connected with the session piece, described session piece has unthreaded hole near on the side of light source, three sessions that have that connect unthreaded hole, these three sessions are respectively: the session I that crosses photocentre, be parallel to the session II of primary optical axis and the session III of overfocus, be connected with opaque cover plate on the session piece, described session piece matches with convex lens near an end of convex lens.When the source alignment unthreaded hole is opened, light passes from three sessions respectively, pass through convex lens, adjust the position of screen simultaneously, make and present clear real image on the screen, this demonstration can be by three linear elephants of special light of graphing method demonstration convex lens imaging law, visual in image, understand easily and grasp knowledge architecture.
Session piece described in the utility model is divided into left and right sides two parts in the focal position.Can lump together demonstration like this, also can come two parts branch, with three kinds of light sources of different colors, aim at three sessions respectively, adjust screen simultaneously, the clear real image that can present three different colours at the focus place can find out that the arrangement of color is opposite with light source just in time, promptly obtains a picture that stands upside down; Also can demonstrate with three sessions respectively, the light that make the student clearly see the light parallel with primary optical axis, to pass the light of photocentre and overfocus changes by ray refraction behind the convex lens respectively.
Be connected with vertical backboard at base one side longitudinal edge, described backboard is positioned at convex lens and screen one side.Can see the trend of different colours light from backboard, make the student that the understanding of visual pattern be arranged.
The beneficial effects of the utility model are: convex lens image-forming demonstration instrument, comprise: base, vertical chute on base top, be positioned at a plurality of slide blocks of chute, convex lens that are connected with slide block and be positioned at the screen and the light source of convex lens both sides respectively, on the slide block between convex lens and the light source, be connected with the session piece, described session piece has unthreaded hole near on the side of light source, three sessions that have that connect unthreaded hole, these three sessions are respectively: the session I that crosses photocentre, be parallel to the session II of primary optical axis and the session III of overfocus, be connected with opaque cover plate on the session piece, described session piece matches with convex lens near an end of convex lens.Raise cover plate, may allow the student clearly see three sessions, understand three special light, cover cover plate during demonstration, utilize the convex lens imaging three special light (cross photocentre light, be parallel to the light of primary optical axis and the light of overfocus) propagation law, show the imaging law of convex lens by the method for Dynamic Drawing, convenient understandable, imaging law is directly perceived, and the student is with deep impression, easy to understand and acceptance.
Description of drawings
Fig. 1 is a structural representation of the present utility model,
Among the figure: 1-light source, 2-slide block, 3-chute, 4-base, 5-unthreaded hole, 6-cover plate, 7-session piece, 8-session III, 9-session I, 10-session II, 11-convex lens, 12-backboard, 13-screen.Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Embodiment
According to shown in Figure 1, convex lens image-forming demonstration instrument, comprise: base 4, vertical chute 3 on base 4 tops, be positioned at a plurality of slide blocks 2 of chute 3, convex lens 11 that are connected with slide block 2 respectively and screen 13 and the light source 1 that is positioned at convex lens 11 both sides, on the slide block 2 between convex lens 11 and the light source 1, be connected with session piece 7, described session piece 7 has unthreaded hole 5 near on the side of light source 1, three sessions that have that connect unthreaded hole 5, these three sessions are respectively: the session I9 that crosses photocentre, be parallel to the session II10 of primary optical axis and the session III8 of overfocus, be hinged with opaque cover plate 6 on session piece 7, described session piece 7 matches with convex lens 11 near an end of convex lens 11.Session piece 7 is divided into left and right sides two parts in the focal position, be connected with vertical backboard 12 at base 4 one side longitudinal edges, and backboard 12 is positioned at convex lens 11 and screen 13 1 sides.
Claims (3)
1. convex lens image-forming demonstration instrument, comprise: base, vertical chute on base top, be positioned at a plurality of slide blocks of chute, convex lens that are connected with slide block and be positioned at the screen and the light source of convex lens both sides respectively, it is characterized in that: on the slide block between convex lens and the light source, be connected with the session piece, described session piece has unthreaded hole near on the side of light source, three sessions that have that connect unthreaded hole, these three sessions are respectively: the session I that crosses photocentre, be parallel to the session II of primary optical axis and the session III of overfocus, be connected with opaque cover plate on the session piece, described session piece matches with convex lens near an end of convex lens.
2. convex lens image-forming demonstration instrument according to claim 1 is characterized in that: described session piece is divided into left and right sides two parts in the focal position.
3. convex lens image-forming demonstration instrument according to claim 1 and 2 is characterized in that: be connected with vertical backboard at base one side longitudinal edge, described backboard is positioned at convex lens and screen one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206519211U CN201877052U (en) | 2010-11-27 | 2010-11-27 | Imaging demonstration instrument for convex lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206519211U CN201877052U (en) | 2010-11-27 | 2010-11-27 | Imaging demonstration instrument for convex lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877052U true CN201877052U (en) | 2011-06-22 |
Family
ID=44164965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206519211U Expired - Fee Related CN201877052U (en) | 2010-11-27 | 2010-11-27 | Imaging demonstration instrument for convex lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877052U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509502A (en) * | 2011-11-28 | 2012-06-20 | 北京师范大学 | Virtual experiment making method for convex lens |
| CN104751687A (en) * | 2015-04-22 | 2015-07-01 | 梧州学院 | Mechanical drawing view projection platform device |
| CN107123351A (en) * | 2017-06-12 | 2017-09-01 | 张素平 | A kind of portable physical laboratory optical apparatus for demonstrating |
-
2010
- 2010-11-27 CN CN2010206519211U patent/CN201877052U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509502A (en) * | 2011-11-28 | 2012-06-20 | 北京师范大学 | Virtual experiment making method for convex lens |
| CN104751687A (en) * | 2015-04-22 | 2015-07-01 | 梧州学院 | Mechanical drawing view projection platform device |
| CN107123351A (en) * | 2017-06-12 | 2017-09-01 | 张素平 | A kind of portable physical laboratory optical apparatus for demonstrating |
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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: 20110622 Termination date: 20111127 |