Demonstration instrument for demonstrating optical refraction and reflection law and measuring index of refraction on blackboard

Abstract

The invention provides a demonstration instrument for demonstrating optical refraction and reflection law and measuring index of refraction on a blackboard. The demonstration instrument is composed ofa projection laser pen, laser pen placing and inserting parts, adjusting parts, a lantern ring, a T-shaped support plate, a cylinder-shaped rack, a gear sliding platform assembly, a connecting rod, an arc-shaped sliding chute, magnetic suckers, a Y-shaped bottom plate, an optical element, a scale disk, studs, gaskets, second springs, butterfly nuts, fixing parts and the like. Based on the technology of the invention with the application number 2019105819888, the technical scheme is characterized in that a gear is mounted at one end of a Pi-shaped sliding platform, the rack is formed in the bottom of the arc-shaped sliding chute, the Pi-shaped sliding platform is driven to move on the arc-shaped sliding chute by utilizing tooth coupling, the tiny adjustment for the incidence angle of incident rays is realized, the springs are arranged between the scale disk and the Y-shaped bottom plate for supporting, so that the direction of the face of the scale disk can be conveniently adjusted, the Y-shaped bottom plate and the arc-shaped sliding chute are connected to form a whole, so that the requirement for the hardness of a manufacturing material is reduced, the manufacturing cost and difficulty are reduced, the adjustment for the incident rays and the face of the scale disk is facilitated, time is further saved, and the classroom teaching efficiency is improved.

Description

technical field [0001] The invention relates to a demonstration instrument for demonstrating the law of optical refraction and refraction on a blackboard to measure the refractive index, and belongs to the technical field of experiment teaching. Background technique [0002] Patent applications such as "Demonstrator of Suspended Optical Refractive Law" (Application No. 2019105819888), compared with the previous equipment, it integrates the adjustment components of incident light such as laser pen insertion components and adjustment components into an arc-shaped chute On the sliding platform that slides up, the concentric scale disk and the arc-shaped chute are connected as a whole by radial connecting rods. Moving the sliding platform on the arc-shaped chute can keep the incident light close to the scale disk to a certain extent. Aligning the disk surface with the center of the scale disk saves time and improves the efficiency of classroom teaching, but the manual sliding pl...

AI Technical Summary

Problems solved by technology

[0002] Patent applications such as "Demonstrator of Suspended Optical Refractive Law" (Application No. 2019105819888), compared with the previous equipment, it integrates the adjustment components of incident light such as laser pen insertion components and adjustment components into an arc-shaped chute On the sliding platform that slides up, the concentric scale disk and the arc-shaped chute are connected as a whole by radial connecting rods. Moving the sliding platform on the arc-shaped chute can keep the incident light close to the scale disk to a certain extent. The disk surface is aligned with the center of the scale disk, which saves time and improves the efficiency of classroom teaching. However, the manual sliding platform is still not fine enough. The overall structure requires high hardness of the material used to make the demonstrator, so it is worth further innovation

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