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. ZYGO was founded in 1970 and is headquartered in Middlefield, CT.