Device and method for measuring optical and geometrical parameters of glass wall

Abstract

The invention discloses a device for measuring optical and geometrical parameters of a glass wall. According to the device, a cylindrical glass container to be measured is arranged on one side on a bracket, and an upper semiconductor laser and a lower semiconductor laser are arranged on the other side of the bracket; a light scattering imaging layer formed by white paint or white glass printing ink is locally arranged on an outer surface of the wall of the cylindrical glass container to be measured. The measurement method comprises the following steps: filling transparent liquid with known refractive index into the cylindrical glass container to be measured, allowing laser beams emitted from the upper semiconductor laser and the lower semiconductor laser to scatter through the light scattering imaging layer, generating total reflection in the process of allowing the scattered light to enter an interface between the glass container and a medium in the container, forming large elliptical dark spots and small elliptical dark spots on the light scattering imaging layer, and calculating the optical and geometrical parameters of the glass wall to be measured according to a relationship between the refractive index and wall thickness and the lengths of long axes of the small and large elliptical dark spots. The device has the advantages of simple structure and method, high measurement speed, high precision and simplicity in implementation.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a measuring device and a measuring method for optical and geometric parameters of glass vessel walls. Background technique [0002] The widespread use of glass containers and glass tubes is well known. Due to their excellent and stable chemical, optical and mechanical properties, they have become indispensable in industrial production fields such as chemical engineering, food hygiene, electric light sources, and solar energy, as well as in laboratories and scientific research. There are few utensils and materials, so the measurement of the optical and geometric parameters of the glass wall becomes an indispensable link in its manufacture and use. [0003] The traditional methods of measuring the wall thickness of glass containers and glass tubes include ultrasonic measurement and capacitive measurement. Due to the complexity of the measurement process, the...

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Problems solved by technology

However, its measurement system is complex and difficult to debug, especially the geometric dimensions R and r of the pipe wall must be known, which limits its application to a certain extent

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