Based on proprietary ZDot™ technology, the Zeta-20 benchtop optical profiler is a non-contact, 3D surfaces topography measurement system. It images and analyzes smooth to rough texture, low reflectivity to high reflectivity, transparent to opaque. The Zeta-20 supports both R&D and production environments by providing comprehensive step height, roughness, and film thickness measurements, and defect inspection capability.