Chris L. Koliopoulos

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.

ADE Corp. manufactures inspection systems for the semiconductor wafer manufacturing industry. It supplies semiconductor devices, magnetic data storage to optics manufacturing industries. The company was founded in 1967 and is headquartered in Richardson, TX.

Part of ADE Corp., Phase Shift Technology, Inc. is a company that manufactures metrology equipment. The company is based in Tucson, AZ. The company was founded by Chris L. Koliopoulos, David F. Basila. Phase Shift Technology was acquired by ADE Corp. on June 15, 1998 for $26 million.