Convex lens imaging rule teaching experiment device
A convex lens imaging and experimental device technology, which is applied in the field of experimental teaching aids, can solve the problems that the candle cannot be raised and lowered at any time, the imaging law of the convex lens is constantly changing, etc., and achieves the effect of quick and convenient demonstration experiment, convenient change of image distance, and guaranteed imaging effect.
Inactive Publication Date: 2017-11-28
魏进东
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide an experimental device for teaching the law of convex lens imaging which is simple in structure, easy to manufacture and implement, and solves the problems of intuitive demonstration that the candle cannot be raised and lowered at any time and the law of convex lens imaging is constantly changing with the change of image distance
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[0016] Attached below Figure 1-2 An embodiment of the present invention is described.
[0017] Convex lens imaging rule teaching experiment device, has a convex lens 5, a candle 9 is provided on one side of the convex lens 5, and a light screen 4 is provided on the other side, the convex lens 5 is fixed in the hoop 6, and the size of the hoop 6 can be adjusted To fix the convex lens 5 with different focal lengths, the outer lower end of the hoop 6 is fixed on the upper end of the scale plate, and the scale plate is composed of an upper scale plate 1 and a lower scale plate 8 that can be relatively displaced in the horizontal direction; the upper scale plate 1 and the lower scale plate The lower scale plate 8 can be relatively displaced, which is convenient for image finding and image distance adjustment, and is easy to demonstrate changes in imaging rules. There are multiple candles 9, and the setting of multiple candles 9 makes the demonstration experiment faster and more c...
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Provided is a convex lens imaging law teaching experiment device, which has a convex lens, a candle is provided on one side of the convex lens, and a light screen is provided on the other side, the convex lens is fixed in a hoop, the hoop is fixed on a scale plate, and the scale plate can be moved horizontally It is composed of an upper scale plate and a lower scale plate with relative displacement; there are multiple candles, and multiple candles are adapted to multiple rotating seats that can adjust the height of the candles. The lower end of the rotating seat is fixed on the upper end of the lower scale plate; The cylindrical part is inserted into the guide ring, and the cylindrical part is drawn and moved along the axial direction of the guide ring. The circular bottom of the cylindrical part is provided with a light screen at the end of the convex lens. The invention has the advantages of simple structure, easy operation and easy realization during manufacture, and can intuitively and conveniently demonstrate the imaging rule of the convex lens.
Description
technical field [0001] The invention belongs to the technical field of experimental teaching aids, in particular to an experimental device for teaching the law of convex lens imaging. Background technique [0002] Convex lens images through refraction and its imaging follows certain rules. Its imaging virtual or real, zoom in or out, and upright or upside down change regularly with the change of object distance and image distance. In the teaching process, how to demonstrate this regularly changing imaging process to students intuitively through teaching aids is a technical problem that needs to be solved urgently. In some experimental teaching aids in the prior art, it is most intuitive and convenient to use a candle as a light source for demonstration, because the candle itself is both a light source and an image source, and it is easy to distinguish an upright or inverted image. However, as the candle burns, The flame core will gradually move down, and it is necessary to ...
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CPCG09B23/22
Inventor 袁升平魏进东
Owner 魏进东