4D laser interferometers play a critical role in many high tech markets, providing metrology systems for high-throughput production and mission-critical measurements for unique research projects.

General Optics Manufacturing Quality control for surface shape and texture, homogeneity for flats, spheres, prisms, transparent optics, etc.
Meter-Class Optics Shape measurement, polishing feedback and final approval for the large convex and concave elements in terrestrial and space-based telescopes.
Magnetic Data Storage Reliable, manufacturing-floor process control for disk and substrate flatness, glass disk surface quality, RVA analysis, waviness and more.
Pickup Heads (PUHs) Process control of wavefront quality for DVD, CD, Blu-Ray and other pick-up heads.

More about 4D:
Calibration-Free Performance

With traditional "phase shifting" interferometers, daily calibration routines are required to correct for drift in the systems' scanning mechanisms. Despite these measures, calibration tends to slide throughout the day and week, adding uncertainty to measurement repeatability.

4D Technology's dynamic interferometers acquire all the data needed for a measurement simultaneously, using a patented wavefront sensor and no scanning mechanism. Because there are no moving parts, calibration is ...

3280 E Hemisphere Loop, Ste 146, Tucson, AZ 85706    Tel: +1 (520) 294-5600    Fax: +1 (520) 294-5601