Device and method for measuring refractive index of optical material

Abstract

The invention discloses a device and method for measuring the refractive index of an optical material, belongs to the technical field of material performance test, and can solve the problem that it isdifficult to accurately measure the refractive index of a high-refractive-index or micro-size optical material through an existing refractive index measuring method. The device comprises a light source module, a transparent flat plate, an imaging module and a measuring module. The light source module is used for providing monochromatic light with a preset wavelength; the transparent flat plate isprovided with a first imaging reference mark; the imaging module is used for carrying out optical imaging on the first imaging reference mark before and when a sample to be measured is measured, recording the imaging position of the imaging module before the sample to be measured is measured as a zero-point position, and recording the imaging position of the imaging module when the sample to be measured is measured as an end-point position; and the measuring module is used for measuring the refractive index of the sample to be measured according to the displacement of the imaging module moving from the zero-point position to the end-point position and the thickness of the sample to be measured. The method and device are used for measuring the refractive index of the optical material.

Description

technical field [0001] The invention relates to a measuring device and a measuring method for the refractive index of optical materials, belonging to the technical field of material performance testing. Background technique [0002] As the most widely used class of materials, optical materials cover a wide range of materials, from inorganic optical materials to organic optical materials, from macroscopically disordered glasses to long-range ordered single crystals, from bulky optical materials to microscopic Two-dimensional optical film materials at the scale. Regardless of the shape of the material, in order to be applied in the optical field, it is necessary to have the relevant optical performance indicators of the material to evaluate the application prospect of the material, and to support the relevant optical design in the application of the material. [0003] Refractive index, as the most apparent performance index of optical materials, the principle and technical me...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a measuring device and a measuring method for the refractive index of optical materials, which can solve the problem that the existing refractive index measuring methods are difficult to accurately measure the refractive index of optical materials with high refractive index or small size

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