About 4D Technology

For over 20 years, 4D Technology has been a leader in innovative metrology products for measuring surface quality and surface defects on precision surfaces, as well as the surface and wavefront quality of optics.

4D’s patented Dynamic Interferometry® technology enables measurements in difficult environments, where vibration, air turbulence or rapid motion have traditionally prevented accurate measurement.

4D Technology has been a subsidiary of Onto Innovation since 2019.