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Dynamic interferometry, at the heart of all 4D products, overcomes barriers to traditional, phase-shifting interferometry, such as vibration and turbulence, to let you measure in places off limits to interferometers in the past.

In Situ Process Control

In situ measurement for highly efficient, in-line process feedback.

4D Technology’s dynamic interferometers provide metrology for quality and process control of optical elements including flats, spheres, aspheres, prisms, windows, mirrors, etc.

Production Floor Measurement

Instantaneous measurement allows quality assurance testing on the factory floor.

4D Technology’s dynamic interferometers provide metrology for flatness, surface shape, surface character of large flat, convex and concave optics for terrestrial telescopes, space-based telescopes and directed energy systems

Clean Room Metrology

Compact, accurate measurement in clean rooms despite high volume air flow and pump vibration.

4D Technology’s dynamic interferometers provide metrology for Blu-Ray, DVD, and CD pickup heads, runout, velocity and acceleration (RVA) of hard disks, and double-side shape measurements of transparent media.

Environmental Testing Chambers

Measure at cryogenic-vacuum temperatures and pressures to verify space-based optics and optical systems.

WaveCam dynamic Mach Zehnder interferometer measures the wavefront quality of DVD, CD, Blu-ray and other pick-up heads (PUHs)