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

WZY-250.Stress gauge (angle reading, field of view 250mm)

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 degree

Measurement accuracy: 1 degree

Polarization field diameter: 250 millimeters

Check the rotation angle of the polarizer: 360°

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

The maximum distance between the polarizer and the analyzer, 400mm

Schematic diagram of instrument structure

1. Deviation mirror for dial inspection

2.1/4 waveplate, full waveplate

3. Wave plate conversion knob

4. Lift seat

5. Polarizing mirror

6. Light source box

7. Support frame

8. Power plug

9. Lock the handwheel

10. Guiding rod

11. Switch