Pinhole imaging teaching tool

Abstract

The invention discloses a pinhole imaging teaching tool, and relates to the technical field of science education and science popularization. The pinhole imaging teaching tool comprises a working platform, wherein a base is arranged on the working platform; a lightproof drum is arranged on the base; a cover plate is arranged at one end of the lightproof drum; a light source is arranged on the cover plate; the cover plate is hinged to the lightproof drum; an observation window is arranged at the other end of the lightproof drum; a screw rod is arranged on one side of the observation window; a limiting ring, a pinhole optical plate and an imaging plate are arranged in the lightproof drum in sequence; a drive plate device is arranged on the pinhole optical plate, and comprises a porous disc and a bulge block; the porous disc is in rotating connection with the pinhole optical plate through a small rotating shaft; the bulge block is fixed to the pinhole optical plate; a plurality of pinholes with different diameters are formed in the porous disc; a centre hole of which the diameter is larger than that of the pinhole is formed in the pinhole optical plate; a turning block is arranged on one side of the porous disc; a plurality of grooves are formed in the corresponding side wall; the bulge block is in detachable connection with the grooves; the screw rod penetrates through the imaging plate to be connected with the pinhole optical plate. The adoption of the design solves the problem that a demonstration effect is interfered by ambient light is solved, and enables a function of science popularization teaching to be more rich and enables the interestingness to be more strong.

Description

technical field [0001] The invention relates to the technical field of science, education and science popularization, in particular to a small hole imaging teaching aid. Background technique [0002] Pinhole imaging is to use a plate with a small hole to block between the screen and the object, and an inverted image of the object will be formed on the screen. People call this phenomenon pinhole imaging; general teaching aids are composed of a light source, a small hole baffle Composed with imaging boards, etc., moving the middle baffle back and forth or changing the diameter of the small hole, the size of the image will also change accordingly, but traditional teaching aids need to be in a special laboratory with very dark light to see the demo image, because the demo The environment is restricted, so it is very inconvenient. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a small hole imaging teaching aid to so...

AI Technical Summary

Problems solved by technology

[0002] Pinhole imaging is to use a plate with a small hole to block between the screen and the object, and an inverted image of the object will be formed on the screen. People call this phenomenon pinhole imaging; general teaching aids are composed of a light source, a small hole baffle Composed of imaging boards, etc., moving the middle baffle back and forth or changing the diameter of the small hole, the size of the image will also change accordingly, but traditional teaching aids need to be in a special laboratory with very dark light to see the demo image, because the demo The environment is restricted, so it is inconvenient

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