Portable refractive index measuring device and refractive index measuring method

Abstract

The invention discloses a portable refractive index measuring device and a refractive index measuring method, wherein the portable refractive index measuring device comprises a light source, a samplepool and an image sensor in sequential arrangement along a light path, wherein a calibration plate is also arranged between the light source and the sample pool; the calibration plate is provided witha calibration pattern; the image sensor is used for respectively obtaining image data of calibration patterns before and after the placement of a sample to be tested into the sample pool, so that therefractive index of the sample to be tested can be calculated. The portable refractive index measuring device has the advantages that the structure is simple; the carrying is convenient; the cost isrelatively low; the refractive index of transparent solid, liquid and gas can be measured and monitored in real time.

Description

Technical field [0001] The invention relates to the technical field of refractive index measuring instruments, in particular to a portable refractive index measuring device and a refractive index measuring method. Background technique [0002] Measuring the refractive index of transparent solids, liquids and gases is a widely used technology in production and life. There are many ways to measure the refractive index, mainly the method of measuring the refractive index using the law of refraction, and the method of measuring the refractive index using the Fresnel formula Method, interferometric method to measure refractive index and shadow method. Among them, the most commonly used method in production experiments is to use the law of refraction to measure the refractive index. The methods using the law of refraction include the precision goniometer method, the prism refractometer method, the Abbe refractometer method and the immersion method. These methods are based on the law o...

AI Technical Summary

Problems solved by technology

The advantage of this method is that the structure is simple, the test piece is inserted into the system more conveniently, and the light passes through the test piece twice, which is beneficial to improve the accuracy. The disadvantage is that the surface image of the beam splitter prism easily interferes with the useful interference fringes.

[0005] All of the above methods for measuring the refractive index have complex devices, expensive equipment, and are not conducive to miniaturization and portability measurement.

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