AMETEK, Inc. Logo
Metrology Systems 3D Optical Profilers Laser Interferometers Nano-Position Sensors Custom Metrology Solutions

Laser Interferometers Verifire™ Verifire™ HD Verifire™ HDX DynaFiz® Mx™ Software Interferometer Accessories

Special Applications Verifire™ MST Infrared Interferometers Verifire™ VTS Verifire™ XL Large Aperture Systems Upgrades

Unique Technologies
QPSI™ DynaPhase®

Ultrasphere™ Transmission Spheres

Ultrasphere™ Transmission Spheres
ZYGO's Ultrasphere™ transmission spheres are designed to enable surface form metrology with an uncertainty in the RMS* of ≤ 3.2 nm (λ/200 at 633 nm) when used with a ZYGO interferometer, and are best suited for metrology of test optics with ≤ 40% reflectivity.

They include 4-inch (101.6-mm) diameter transmission spheres with f/numbers of f/0.75, f/1.5 and f/3.3, with λ/40 PVr (λ = 633 nm) surface form. Other 4- and 6-inch Ultrasphere transmission spheres are available.

Each Ultrasphere transmission sphere includes absolute calibration of the reference surface, and are shipped with the resulting MetroPro *.dat file and 37-term Zernike fit on a USB memory stick.

Download the spec sheet for additional details.

* Assumes form metrology of smooth spherical surfaces, a well-nulled cavity, data averaging to minimize systematic noise, a suitably stable environment, and uncertainty estimation following ISO's "Guide to the Expression of Uncertainty in Measurement" (1995) with k=1.

PVr is defined as the 36 term Zernike fit plus 3 times the rms residual of the Zernike fit.

By continuing to use this site, you agree to our Privacy and Cookie Policy. OK

Spec Sheets Manuals What's New at ZYGO?
Social Media Icons LinkedIn Twitter Facebook YouTube
  Privacy and Cookie Policy        Privacy Policy Inquiry Form        Unsubscribe
× Enter the email address you would like to unsubscribe from future contact...


Or, if you have a question, please use our Privacy Policy Inquiry form.