This technique can be defined as a “frame rate” limited method. The Twyman-Green interferometers offered by 4D Technology use a completely different method. Using a polarization-based Dynamic ...

Image Credit: 4D Technology. Phase-Shifting Interferometers are Limited by Vibration and Turbulence In phase-shifting interferometers, time elapses while acquiring the measurement data, and this ...

The interferoMETER 5400-DS and 5600-DS absolute interferometers are used for distance measurement with nanometer accuracy. The product group has now been expanded to include new sensors with a ...