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4D Technology's patented Dynamic interferometry overcomes barriers to traditional, phase-shifting interferometry, such as vibration and turbulence, to let you measure in locations that were off limits to laser 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 
	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.

PhaseCam measuring into environmental chamber courtesy ball Aerospace