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Dynamic interferometry, at the heart of all 4D products, overcomes many barriers to traditional, phase-shifting interferometry, such as moving parts, vibration, turbulence, etc. 4D has brought the power of dynamic laser interferometry to a wide range of applications, including large optics, general optics, data storage, optical storage pickup heads, and more.

General Optics Manufacturing

Quality control for surface shape and texture, homogeneity for flats, spheres, prisms, transparent optics, etc.

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

Meter-Class Optics

Shape measurement, polishing feedback and final approval for large terrestrial and space-based optics and systems.

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

Magnetic Data Storage

Process control for disk and substrate flatness, surface quality, RVA analysis, waviness and more.

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.

Pickup Heads (PUHs)

Process control of wavefront quality for DVD, CD, Blu-ray and other pick-up heads.

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

More about 4D:
Choosing a 4D System

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