Full-auto and Semi-auto Polarimeter are supplied with specific measuring software.  By clicking related buttons, the measurement data and result image can be easily stored and exported to a computer.

It adopts optical waveguide effect of the ion exchange layer on the glass surface to measure.  The divergent light emitted from the light source passes through the slit and is converged by the high refractive index cylindrical prism and becomes parallel light.  By adjusting the position of the light source, a beam of parallel light is incident on the interface between the glass and the prism at a critical angle.  Due to the stress existing on the glass surface, the light is decomposed into two vector lights whose vibration planes are perpendicular to each other.  The two beams of light propagate at different speeds in the ion exchange layer of the glass, so they are refracted to the prism at different total reflection angles.  The light emitted from the prism is reflected by the mirror, enters the interference filter, is focused by the telescope system, and then passes through the analysis mirror and is imaged on the reticle to form a light and dark step image.  The height of the steps and the number of step lines can be accurately measured through analysis software to calculate the surface stress intensity and the depth of the stress layer.

It has been widely used in the quality control for phone glass panel, LCD panel and other chemically tempered glass products.

Users are suggested to use a reference plate with known properties, including refractive index, photoelastic constant, surface stress value, stress layer depth, and glass thickness.

Normally, the stress measurement range of surface stress meter is 0-1000 Mpa.

Our glass thickness gauge utilizes light reflection to determine thickness with special lens.