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. 

During that time, 4D interferometers have been used to assure the quality of some of science’s most challenging telescope projects, both terrestrial and in space. An early customer was NASA, which used several instruments to measure the James Webb Space Telescopes multi-mirror components, the alignment of those mirrors, and the supporting structure for them, both in air and in cryo- and vacuum-chamber tests. 

4D Technology has been an Onto Innovation subsidiary since November, 2019.

4D Technology has distributors all over the world, and a customer support organization to ensure your investment stays operating at peak capability for a long time to come.

New instruments in surprising situations

Using our unique and proprietary dynamic measurement techniques, our award-winning laser interferometer technology is used in to a wide variety of applications, including:

• factory-floor inspection
• telescope mirrors and systems
• biomedical research
• environmental sensing and imaging
• and much more

We collaborate with institutions and companies to create and manufacture accurate metrology for tough environments and difficult measurements.