1.Observation range and sample size: The observation range is the range of the field of view, and the sample size can be larger than the range of the field of view. As long as the observed part can be placed in the field of view, it can be observed

2.Measurement unit: If the degree is in degrees, you can multiply it by a coefficient and convert it to nanometer values yourself

LZY-150.Stress gauge (digital display)

The glass product stress tester is an instrument that uses the principle of polarized light interference to check the internal stress or crystal birefringence effect in glass. Due to the presence of sensitive color plates and the application of 1/4 waveplate compensation method, this instrument can not only qualitatively or semi quantitatively measure the internal stress of glass based on the interference color sequence in the polarization field, but also accurately and quantitatively measure the internal stress value of glass. Therefore, this instrument is suitable for optical instrument factories, glass factories, glass product factories, and laboratories to measure stress values of optical glass, glass products, and other optical materials.

Technical Parameter

Instrument reading: 1 nanometer

Measurement accuracy: (double fold range difference) 4 nanometers

Polarization field diameter: 150 millimeters

Polarizer rotation angle: 360 °

The maximum brightness of the light field shall not be less than 800 lux

The maximum distance between the polarizer and the analyzer is 340mm