Tucson, AZ, October 17, 2013 – 4D Technology Corporation, manufacturer of optical metrology systems, has introduced a new family of Digital Radius Slides for use with 4D AccuFiz® compact laser interferometers. The Digital Radius Slides provide extremely accurate axial positioning for measuring the radius of curvature of concave or convex optics.

Two Digital Radius Slide models are being offered: a linear encoder based version with 1 μm axial resolution, and a high-accuracy laser based option with 10nm axial resolution. Both versions are fully compatible with 4D Technology’s line of 4" and 6" optical mounting components.

4D has also added Radius of Curvature (ROC) analysis as a new, standard feature in its 4Sight Data Analysis Software. The wizard-based software automatically reads axial positions from the Digital Radius Slide and provides rapid, accurate ROC measurement.

AccuFiz laser interferometers offer unmatched lateral resolution and the ability to measure optical components and systems without vibration isolation. With an expanded range of apertures and wavelengths, and a comprehensive line of accessories, AccuFiz interferometers provide best-in-class value and performance.

4D Technology Corporation (www.4DTechnology.com) develops and manufactures optical metrology instruments for astronomy, aerospace, general optics and other applications.