John M. Stack

ZYGO Corp. designs, manufactures and distributes optical systems and components for metrology and end-user applications. It operates through two segments: Metrology Solutions and Optical Systems. The Metrology Solutions division is comprised of three business units: Precision Positioning Systems, Vision Systems, and Instruments. This division's products employ various optical phase analysis techniques for measuring displacement, surface shape and texture, and film thickness. The Optical Systems division is comprised of two business units: Electro-Optics and Optical Components. The company was founded in 1970 and is headquartered in Middlefield, CT.

Edmund Optics, Inc. operates as a provider of optical and imaging components. It offers optics, lasers, microscopy, imaging lenses, cameras, illumination, test targets, testing and detection, lab and production products. The company was founded by Norman Edmund in 1942 and is headquartered in Barrington, NJ.