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Portable 3D Surface Metrology for Quality Control of Large-Scale Optics and Parts

Zygo’s Nomad offers workstation performance in a compact design

Published: Tuesday, October 27, 2015 - 14:30

(Zygo: Middlefield, CT) -- Zygo Corp. has introduce the Nomad portable optical profiler. The Nomad system employs advanced optical technology and advanced 3D noncontact metrology in a lightweight, compact, and portable package, enabling metrology on samples that were previously impossible or impractical to measure.

Precision, performance and portability

Nomad leverages ZYGO's Coherence Scanning Interferometry (CSI) and SureScan technologies for vibration robustness to provide the performance of a workstation in a compact design built with portability in mind.

“The Nomad system’s small, lightweight packaging and sub-nanometer vertical precision provide an economical solution to high-value surface inspection when compared with the costs and challenges of engineering a large workstation platform,’ says Eric Felkel, product manager for Optical Profilers at ZYGO. “By bringing the metrology to the part instead of the part to the metrology, the risks associated with transporting a high-value sample can be greatly reduced.”

In applications as varied as precision optics polishing and finishing sealing surfaces on an automotive engine, surface roughness and waviness are key functional parameters. By using ZYGO’s extensive range of parfocal objectives from 1.4X to 100X magnification, the Nomad profiler enables critical metrology in an easy-to-use and quantitative way.

Versatility for a wide range of applications

Nomad runs ZYGO’s internally developed Mx software for enhanced data visualization and quantification of step heights, texture, and volumetric features. This optimized metrology software also provides added capabilities for regions analysis and advanced applications. The instrument includes a novel desktop stand for the system with an integrated metric breadboard for customers to adapt small-scale fixturing.

The instrument’s breadboard and stand enable the Nomad to be utilized not only as an on-part metrology solution but also as a desktop profiler for smaller samples, providing additional instrument flexibility. Whether users are measuring directly on large parts or utilizing the stand for smaller samples, the instrument’s configurable application recipes and custom scripting capability allow manufacturers to easily tailor the measurement process and combine multiple metrology steps on a single station.

ZYGO will exhibit the Nomad portable optical profiler system in booth No. 815 at the SPIE Optifab show in Rochester, New York, Oct. 13–15, 2015.


About The Author

AMETEK’s picture


AMETEK Inc. is a global developer and manufacturer of electronic instruments and electromechanical devices. AMETEK consists of two operating groups: electronic instruments—manufacture advanced monitoring, testing, calibrating, and display instruments for the process, aerospace, power, and industrial markets; and electromechanical—supply electrical interconnects, technical motors and systems, and electric motors for floor care and other specialty applications. AMETEK Test & Calibration Instruments, based in Allerod, Denmark, and AMETEK Mansfield & Green, based in Largo, Florida, develop, manufacture, sell, and service calibration instruments for temperature, pressure, and process signals, as well as temperature sensors.