Zygo Corp., (Middlefield, CT) a provider of optical components and optical metrology instruments, has acquired substantially all the assets of ASML US, Inc.'s Richmond, CA facility in the United States. ASML is a provider of lithography systems for the semiconductor industry.

The purchase price paid by Zygo is the net book value of the acquired assets expected to be between $7 million and $10 million, including current work-in-process inventory.

The acquisition will allow Zygo to considerably expand its optical manufacturing capabilities, with the addition of high precision optical machining and polishing equipment, aspheric lens manufacturing and diamond turning assets. The Richmond facility will provide synergies with Zygo's Electro-Optics and Optical Metrology Accessories groups that can immediately address new applications in semiconductor, defense and the life-sciences markets.

The acquisition is expected to close by mid November 2010.