Optical bench

Abstract

The invention relates to a teaching utensil, and especially relates to an optical bench. The invention is realized through the following technical scheme: the optical bench comprises the following parts: a slide rail carved with scale along a length direction, a mirror rack used for fixing a convex lens on the slide rail, an object rack used for fixing a light source, and an image rack used for fixing an optical screen, wherein the mirror rack is fixed at a middle section of the slide rail; the slide rail is opened with two sliding chutes which facilitate slide of the object rack and the image rack respectively; the two sliding chutes are at two sides of the mirror rack respectively; the slide rail is provided with a plurality of rotational lamellas and supports which ensure the image rack and the object rack to maintain linear slide. According to the invention, maintaining linear slide of the image rack and the object rack is effective ensured, thus teachers and students can find an experiment result more rapidly and accurately in an operation process.

Description

Technical field [0001] The invention relates to teaching equipment, in particular to an optical bench. Background technique [0002] The optical bench in the prior art, such as a suspended optical bench disclosed in the utility model of Chinese Patent No. 200820001669.2, uses a plastic tube (such as a wire sleeve) with a diameter of about 2 cm as a beam, and a lens The focal length is the unit, the red and white scales are engraved, and the beam is fixed on the iron frame with the rotating bracket of the iron frame. The beam is hung with optical elements such as lenses, light screens, candles, etc. Although this kind of optical frame can allow various angles The students in, have the opportunity to observe the phenomenon of lens imaging, but this kind of optical bench is too simple and the operation accuracy is low; another example is a simple optical bench disclosed in the utility model of Chinese patent number 89218203.2, this simple optical bench It is mainly composed of a pa...

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Problems solved by technology

[0002] The optical bench in the prior art, such as the suspended optical bench disclosed in the utility model of Chinese Patent No. 200820001669.2, adopts a plastic tube (such as a wire sleeve) with a diameter of about 2cm as the beam, and the The focal length is the unit, and the red and white scales are engraved, and the beam is fixed on the iron frame by the rotating bracket of the iron frame. Optical components such as lenses, light screens, and candles are hung on the beam. Every student has the opportunity to observe the phenomenon of lens imaging, but this kind of optical bench is too simple and the operation accuracy is low; another example is a simple optical bench disclosed in the utility model of Chinese Patent No. 89218203.2. , which is mainly composed of a supporting plate and a chute. The convex lens, screen, and candle holder used in the experiment can be freely plugged and slid on the slide through the slide. Although this kind of optical bench has a simple structure, due to the inevitable There will be looseness. Therefore, when the sliding pick slides along the length of the skateboard, it will inevitably produce displacement in the width direction, which will affect the experimental results.

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