CN202615683U

CN202615683U - Periscope principle demonstration instrument

Info

Publication number: CN202615683U
Application number: CN 201220057728
Authority: CN
Inventors: 郭茂清
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2012-12-19
Anticipated expiration: 2022-02-13

Abstract

The utility model relates to a teaching instrument, especially to a periscope principle demonstration instrument, for solving the problem that no experimental instrument for demonstrating the periscope principle visually exists in the primary school science lesson and junior middle school physics lesson teaching. The periscope principle demonstration instrument comprises an instrument box body in which upper and lower two flat mirrors having 45-degree included angles with a vertical line and parallel with each other are arranged, and a white optical circuit board close to inside; a platform is arranged below an upper observation port, and a rotatable (angle adjustable) laser small flashlight and a candle positioning screw are arranged on the platform; a movable drawing-out plate is arranged below a lower observation port, and the tail end of the movable drawing-out plate is equipped with a first ground glass imaging screen; a movable flat mirror is arranged behind the lower observation port, a second ground glass imaging screen is arranged in front of the lower observation port, and fastening ports in which convex lenses can be embedded are arranged in the centers of the two walls of the upper and lower flat mirrors and at the upper and lower parts of the lower observation port and are used for the insertions of the convex lenses. The periscope principle demonstration instrument of the utility model is compact in structure, agile and convenient in operation and vivid, interesting and visual in demonstration effect, is simple and reasonable, is convenient to carry, is conducive to arouse the learning interests of students and improve the primary school science lesson and junior middle school physics lesson teaching quality, and has a great practical and popularization value.

Description

The periscope principle demonstration instrument

Technical field

The utility model relates to a kind of teaching aid, is specially a kind of periscope principle demonstration instrument.

Background technology

Teaching aid has the irreplaceable effect of other means as the apparatus of teacher's aided education.No matter which subject can have certain teaching aid as aid.The teacher really includes teaching aid in teaching process as required, bases oneself upon actual selection and uses teaching aid, can excite student's learning interest; Outstanding focal points break through teaching difficulty, optimize classroom structures; Development student's ability of creative can effectively be improved the quality of teaching and efficient.Along with the improving constantly of education and instruction level, the variation of teaching aid is increasing in recent years, some Self-made Realia particularly, and material source is extensive, obtains simply, and kind embraces a wide spectrum of ideas, the lower even cost free of cost of manufacture, it is handy to use.

At present, primary school science class and middle school physics lesson teaching process in the teaching aid of still incompetent visual in image, vivid and interesting ground displaying periscope principle.The utility model has been filled up the blank of national instrument, in teaching, uses, and not only lets the student thoroughly understand and grasp the principle of work of periscope, and can let the student understand the principles of science that convex lens imaging and level crossing repeatedly reflect.

Summary of the invention

The utility model for solve study science for a short time with the teaching of middle school physics lesson in, do not have the problem that image vivid and interesting ground directly perceived carries out the experimental apparatus of periscope principle, a kind of periscope principle demonstration instrument is provided.

The utility model is implemented using the following technical solution: the periscope principle demonstration instrument, including instrument cabinet, cabinets means a 45 degree angle from the vertical and mutually parallel top and bottom sides of a plane mirror, against the circuit board inside of the white light; observed mouth beneath the platform on which the laser device can rotate a small flashlight and candles positioning screws; plane mirror in the middle of the upper and lower walls and observed under both above and below the mouth can clamp into the device has a bayonet lens to lens insertion.

Also comprise the movable pull plate that is installed on casing one side in the instrument box, its outside end device has first frosted glass imaging screen.Lighted candle adjusting activity pull plate can be a clear showing candle handstand image at screen.

Second frosted glass imaging screen in the free cheek mirror of pasting on the light path plate of observation panel the inside under also comprising in the instrument box and its place ahead.The image that the angle of adjustment free cheek mirror can make convex lens become is presented on the instrument front, be convenient to the student from the front Direct observation.

Compared with prior art, the described teaching aid of the utility model can represent the principle of work of periscope incisively and vividly, also can show the principles of science that convex lens imaging and level crossing repeatedly reflect simultaneously.Can satisfy the requirement of middle and primary schools' experimental teaching, comprehensive stronger, a multi-purpose instrument, demonstration effect vivid and interesting, visual in image helps to improve students'interest in learning, excites student's creativity consciousness, is expressly understood and grasps institute and gain knowledge.Its compact conformation, advantages of simple, flexible and convenient operation is drawn materials easily, and is easy to carry, has certain popularization value and use value.

Description of drawings

Accompanying drawing is the positive structural plan figure of instrument, among the figure 1, instrument box; 2, lower plane mirror; 3, convex lens; 4, the little torch rotating shaft of laser; 5, candle set screw nail; 6; The little torch of laser; 7, go up level crossing; 8, white light path plate; 9 first frosted glass imaging screen; 10, free cheek mirror; 11, second frosted glass imaging screen; 12, convex lens sheet inserts bayonet socket; 13, movable pull plate.

Instrument back side device has accessory case, in order to place convex lens, candle, etc. annex.(figure slightly)

Embodiment

The periscope principle demonstration instrument, as shown in the figure, comprise instrument box (1); Be provided with the lower plane mirror (2) and the last level crossing (7) that become miter angle and be parallel to each other with vertical line in the casing, two level crossings are near the white light path plate (8) in the instrument box (1); Below the observation panel of top platform is arranged, device has little torch of revolvable laser (6) and candle set screw nail (5) on the platform; All be designed with bayonet socket at two places on the instrument tank wall in the middle of last level crossing (7) and the lower plane mirror (2) and on the preceding instrument tank wall of lower plane mirror (2), can insert convex lens (3) in the bayonet socket.

Take off convex lens (3), take out movable pull plate (13), become a periscope, just can see the scenery of going up outside the observation panel from following observation panel.

Activity withdrawable plug (13), the laser light flashlight clamp (6), the rotation angle slowly, the white light circuit board (8) will appear on the red light moving images, incident on the parallel plane mirror (7), the re- by the upper plane mirror (7) is reflected downward at a 90 degree angle into the plane mirror (2), the lower plane mirror (2) and a 90-degree angle to reflect light parallel to the first ground glass image screen (9).The student can see " Z " font index path that the secondary reflection of light forms from the white light path plate (8) in front intuitively.Can on first frosted glass imaging screen (9), see simultaneously and penetrate next red luminous point by the little torch of laser (6) of last observation panel.

In the bayonet socket in the middle of level crossing (7) and the lower plane mirror (2) in convex lens (3) insertion; Candle is inserted on the candle set screw nail (5) lights; Adjust focal length with movable pull plate (13), just present the image of candle handstand clearly on first frosted glass imaging screen (9).

Convex lens (3) are inserted in the preceding bayonet socket of lower plane mirror (2); Adjust focal length with movable pull plate (13); Demonstrate the outer downscaled images of scenery clearly of observation panel on first frosted glass imaging screen (9); Instrument has become a periscopic camera, and the extraneous light that blocks instrument the place ahead with the plank piece makes it to become the darkroom, and effect is better.

Promote the free cheek mirror (10) behind second frosted glass imaging screen (11); Make it to become miter angle with second frosted glass imaging screen (11); Because the reflection for the third time of free cheek mirror; Image just is presented in second imaging screen (11), makes the image that the student can the Direct observation convex lens be become from the front.

Excellent interesting experiment greatly motivates students' interest in learning and they are obtained easily and firmly grasps institute and gain knowledge and overcome existing teaching aid in bulk and be difficult for preserving the defective of carrying, and very high popularizing value is arranged.

Claims

1. a periscope principle demonstration instrument is characterized in that comprising instrument box (1), is provided with the lower plane mirror (2) and the last level crossing (7) that become miter angle and be parallel to each other with vertical line in the casing; Two level crossings are near the white light path plate (8) in the instrument box (1); Below the observation panel of top platform is arranged, device has little torch of revolvable laser (6) and candle set screw nail (5) on the platform; Two places are designed with bayonet socket on the preceding instrument tank wall of the upper and lower level crossing of instrument tank wall (2) in the middle of last level crossing (7) and lower plane mirror (2), can insert convex lens (3) in the bayonet socket.

2. periscope principle demonstration instrument according to claim 1 also comprises the movable pull plate (13) that is installed on casing one side in the instrument box (1), its outside end device has first frosted glass imaging screen (9).

3. periscope principle demonstration instrument according to claim 1, second frosted glass imaging screen (11) in the free cheek mirror of pasting on the light path plate of observation panel the inside under also comprising in the instrument box (1) (10) and its place ahead.