Refractive index measuring instrument for transparent material with Brewster angle

Abstract

The invention discloses a refractive index measuring instrument for transparent material with the Brewster angle, comprising an upright post and a one-fourth circular arc guide rail taking the upright post as the radius. The guide rail is provided with a laser emitter which can slide along the circular arc direction of the guide rail and is opposite to the direction of the center of a circle of the circular arc guide rail, and an objective table is arranged at the center position of the circle of the circular arc guide rail; the upright post is vertically provided with a scale beam below which a polarization film strip is arranged, and a photoelectric sensor is arranged between the polarization film strip and the scale beam and connected with a digital display indicator. The method simplifies a traditional complex refractive index detecting method, can conveniently and simply confirm the components of the transparent material, can accurately measure the refractive index when the three-dimensional surface of the transparent material is not regular without polishing the surface, and can measure the refractive index only by finding a small reflecting surface on a measured object without damaging original ore.

Description

technical field [0001] The invention relates to a transparent material refractive index measuring device, in particular to a Brewster angle transparent material refractive index measuring instrument. Background technique [0002] There are many existing refractive index measurement technologies. When measuring the refractive index (transparent plastic, plexiglass, glass), the detection method of the refractive index is through a very complicated method, which requires a Michelson interferometer, and sometimes the surface of the material needs to be ground Obtaining a regular three-dimensional surface to measure the refractive index requires a certain degree of complexity in the detection operation. [0003] The composition of transparent materials can sometimes be visually inspected, experienced people can see it at a glance, and can also be carefully measured by chemical methods. Seeing with eyes requires a certain amount of experience, and using chemical methods requires ...

AI Technical Summary

Problems solved by technology

However, the method of manual visual inspection is too arbitrary and relies too much on human experience, which may easily cause deviations in test results.

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