CN201307360Y

CN201307360Y - Demonstrator for effect of lens on light

Info

Publication number: CN201307360Y
Application number: CNU2008201413942U
Authority: CN
Inventors: 刘亚男
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-13
Filing date: 2008-11-13
Publication date: 2009-09-09
Anticipated expiration: 2018-11-13

Abstract

The utility model relates to a demonstrator for the effect of lens on light, which belongs to a physics demonstrating instrument. At present, a plane demonstration method is generally adopted for demonstrating the effect of the lens on the light, namely utilizing light beams to form a light band on a white board so as to demonstrate the path of the light before or after transmitting the lens. The prior method has the disadvantage of only demonstrating one plane and being difficult to demonstrate the three-dimensional space refracted by the lens. In a transparent box of the demonstrator, the path of the light before or after transmitting the lens is demonstrated by white smoke. The demonstrator is characterized in that a bracket (1) and a guide rail (2) form an optical bench; the guide rail is provided with an optical rack (7); the optical rack (7) is provided with a hole in which a lens (11) is arranged; a pulley (4) and a knob (3) are arranged at two ends of the optical bench; the optical rack is driven by a fine thread (9) to move when the knob is turned; the optical bench is provided with a smoke box (10); a smoke generator (8) is arranged below the smoke box; a transparent observation window is arranged on the front side of the smoke box; other sides of the smoke box are black boards; and a laser generator (6) and a glass bead (5) are arranged at one end of the smoke box.

Description

A kind of lens are to the effect demonstration device of light

Technical field

The utility model belongs to a kind of physics demonstration teaching aid.

Background technology

The demonstration lens are to the effect of light at present, the general plane method of demonstration that adopts promptly utilizes light beam to form light belt on blank, with the path before and after the display light scioptics, this method shortcoming is that only bear shows a plane, and in fact lens are solid spaces to the effect of light.

Summary of the invention

In glass box, utilize white cigarette to come the path of display light scioptics front and back.

The technical scheme of dealing with problems is, support (1) and guide rail (2) constitute optical bench, light tool frame (7) is installed on the guide rail, and perforate can be installed lens (11) on the light tool frame, and there are pulley (4) and knob (3) in the optical bench two ends, can drive light tool frame by fine rule (9) during turning knob moves, smoke box (10) is arranged on the optical bench, and there is smoke generator (8) the smoke box below, and the smoke box front is a transparent windows, other face is a blackboard, and smoke box one end has laser generator (6) and beaded glass (5).

This product is as teaching aid, the laser that light source adopts laser pen to send, by after the beaded glass refraction again scioptics produce the light source that needs, the brightness height, can show the stereoeffect of lens to the student to anaclasis, the visibility height, better to understanding lens to the action effect of light.

Description of drawings

Fig. 1 be lens to the light action demonstration device, 1. supports among the figure, 2. guide rail, 3. knob, 4. pulley, 5. beaded glass, 6. laser generator, 7. smooth tool frame, 8. smoke generator, 9. fine rule, 10. smoke box, 11. lens.

Embodiment

Support is made with metal, guide rail adopts stainless-steel tube, the metal manufacturing of light tool frame, the tool frame perforate of not sharing the same light varies in size, to adapt to the lens of different-diameter, install and fix screw on the frame, with fixed lens, light tool frame has aperture, to pass fine rule, and fine rule can be fixed on the light tool frame, is convenient to regulate the position of light tool frame.Smoke box adopts transparency glass plate to make, and light and easy for installation, except that towards student's one side, other face is painted black all, and fine metal mesh is arranged on the smoke generator, and smoking material can be lighted the back and produce white cigarette with the useless flood dragon tablet etc. that goes out.The laser pen that light source adopts laser pen to send impinges upon on the beaded glass, and the light that reflects becomes source of parallel light by convex lens again.

Claims

1, a kind of lens are to the effect demonstration device of light, it is characterized in that: support (1) and guide rail (2) constitute optical bench, light tool frame (7) is installed on the guide rail, perforate can be installed lens (11) on the light tool frame, there are pulley (4) and knob (3) in the optical bench two ends, can drive light tool frame by fine rule (9) during turning knob moves, smoke box (10) is arranged on the optical bench, there is smoke generator (8) the smoke box below, the smoke box front is a transparent windows, other face is a blackboard, and smoke box one end has laser generator (6) and beaded glass (5).