Worldwide supplier of advance stock and custom optics and electro-optics
Precision optics including extreme precision aspheres and freeform, meter-class flats and windows in common and exotic materials. Full electro-mechanical-optical design/prototype and manufacturing capabilities for medical, defense, military, ISR, semiconductor and industrial technology research.
Laurel Brook Road
Middlefield, CT 06455-0448
Contact: Matthew Stevens
Zygo’s QPSI technology eliminates the problem of environment vibrations with measurements that require no special setup or calibration. A ZYGO interferometer utilizing QPSI technology is capable of producing reliable high-precision measurements in the presence of environmental vibration from common sources such as motors, pumps, blowers, and personnel.
Understanding performance specifications is the first step in the process of selecting an instrument or technology for areal surface topography measurements. One of the more frequently cited parameters is known as “vertical resolution,” which is defined as the smallest surface height variation that can be detected. As a result of a review of instrument brochures, technical articles, and international standards, it was found that there is not a consensus regarding the meaning of "vertical resolution" and its numerical specification, which leads to a lot of confusion in the industry. It is important to re-evaluate the use of the term “vertical resolution” and identify a better way to characterize other instrument performance specifications.
Interference microscopy encompasses a wide range of techniques when it comes to measuring the many aspects of surface structures. Utilizing interference microscopy for these types of measurements includes the advantages of rapid, non-contact operation and rapid data acquisition, often at data acquisition rates in the millions of 3D image points per second. Due to its uniqueness among optical areal measurement instruments, interferometry has the benefit of high sensitivity to surface structures. This article discusses the principles of interferometric dimensional metrology applied to surface features best viewed in a microscope
Obstructing artifacts in interferometric data can come in many different forms, such as a “bulls-eye,” which can be caused by dust on an optical surfaced in the coherent beam path of an interferometer. These artifacts can print through on the height map and affect the magnitude and repeatability of the surface results. As a solution, ZYGO offers the Ring of FireTM extended source method for reducing noise and other artifacts. Building on this expertise, ZYGO has also developed a coherent artifact reduction system (CARS) that reduces noise from wavefront shearing, speckle, or mottle by a factor of up to 10 and allows for surface features to be resolved.
Optical profilers using Coherence Scanning Interferometry (CSI) have traditionally found it a challenge to measure highly sloped surfaces. Surfaces like these can be found in all industries and include optical micro-lenses, brightness enhancing structures, and machined cones. ZYGO offers CSI based profilers running Mx™ software with advancements in signal detection and processing that vastly improve the ability to obtain valid topography data from surfaces with high slopes.
Intelligence, surveillance, and reconnaissance (ISR) sensor technologies have evolved as mission requirements become much more rigorous. As this technology has evolved, the demands have increased for the highest levels of performance and reliability in high-precision windows. These ISR windows must demonstrate superior performance in order to avoid compromising a mission’s success. Sapphire is extremely durable, scratch-resistant, withstands extreme temperatures, and transmits over a broad wavelength range of light, making it an excellent choice for ISR optical windows. This white paper discusses the important criteria for selecting a sapphire window manufacturer for high-reliability ISR applications.
Zygo Corporation provided LIGO Scientific Collaboration with extremely high-precision optics for its successful detection of gravitational waves and thereby confirming one of the major predictions of Albert Einstein's 1915 General Theory of Relativity.
The Verifire™ XL comes with QPSI™ acquisition technology that enables true on-axis surface form metrology, without degradation from production floor vibrations. The system features a heavy duty tip/tip/tilt stage providing repeatable part placement without needing custom fixturing. The Mx™ measurement and analysis software provides unmatched measurement capability with its operational features, data visualization tools, and easy-to-use interface.
The ZeGageTM Plus is an optical surface profiler designed with sub-nanometer precision, scans up to twice as fast as the ZeGage profiler, and has an increased range of measureable surfaces. This new profiler is extremely versatile in measuring a wide variety of surfaces ranging from rough to super smooth, including finishes such as ground, honed, lapped, and super-polished on materials like glass, ceramic, and metal.
Photonics components enable the design and development of next-generation medical devices and diagnostics. This paper identifies common mistakes medical device manufacturers make when attempting to incorporate optics and photonics into their designs — and how to avoid them.
When the Department of Defense decided that their previous landscape flight simulators used to train pilots required too large of a display, too large of an enclosure space, and were starting to feel a bit antiquated in general, they went on the lookout for a helmet –mounted simulation solution to replace the traditional rear-projection screens they were using.
When an ophthalmologist removes the natural lens in a human eye that’s affected by a cataract, an artificial intraocular lens (IOL) is put in its place. Recently, a medical device startup manufacturer developed a new type of IOL that allows surgeons to adjust for errors in preoperative measurements and variations in vision as the eye heals.
Trips to the dentist are rarely pleasant, and that unpleasantness can be compounded when the doctor needs a 3D model of your teeth.
Zygo Corporation's optical capabilities include large format optical fabrication and coating, integrated system design and prototyping, and integrated system assembly.
This video features the new Verifire™ HD Interferometer System with a high-speed 2k x 2k pixel CCD camera, and an optimized optical design to reliably measure surface features.
John Waka with Zygo started our day two DSS 2015 coverage off with an introduction to the DynaFiz™ — a dynamic laser interferometer that can essentially "freeze" vibration, enabling accurate optic metrology in environments that are too violent for traditional temporal phase shifting techniques.
The world's most powerful laser needed a high precision custom optics manufacturer. In this case study, high fluence laser amplifiers were developed into a volume production process for the National Ignition Facility project.
In this video, one of Zygo’s applications engineers provides a demonstration of the ZeGageTM 3D optical surface profiler as it measures the roughness of the surface of a sealing valve used in the automotive industry. That might sounds fairly unremarkable, but check out how the system does on a rickety plastic table in a machine shop full of noise and vibration.
Barbara Carr with Zygo kicked off day two of Photonics Online's Optics and Photonics 2014 coverage by introducing the DynaFiz — a dynamic laser interferometer designed to measure the surface form of optics in the presence of turbulent air, or in environments susceptible to extreme vibrations. Watch the video to see it in action.
John Stack, president of the optical systems division at Zygo walks us through what his company displayed this year at Photonics West.
In this video, Justin Turner from Zygo introduces the ZeGage optical profiler. The system measures precision surfaces of implantable medical devices that require non-contact metrology, such as bone screws and dental implants.
This video gives insight on a dental medical device’s journey from the prototype phase to production. The device needed to be small enough to image rear teeth, robust enough to replace physical impressions, and had to make precision measurements for prosthetics. The process involved complex optics, steps to ensure hygienic sterilization, high resolution 3D imaging, and more. Download the video to see how it was done.