II-VI, Inc. engages in the development, refinement, manufacturing, and marketing of engineered materials and opto-electronic components and devices for precision in the field of industrial materials processing, optical communications, aerospace and defense, consumer electronics, semiconductor capital equipment, life sciences, and automotive applications and markets. It operates through the following three segments: Laser Solutions, Photonics, and Performance Products. The Laser Solutions segment designs, manufactures, and markets optical and electro-optical components and materials sold under the II-VI Infrared brand name. The Photonics segment manufactures crystal materials, optics, microchip lasers, and optoelectronic modules for use in optical communications networks and other diverse consumer, life sciences, and commercial applications. The Performance Products segment designs, manufactures, and markets infrared optical components and high-precision optical assemblies for aerospace and defense, medical, and commercial laser imaging applications. The company was founded Carl J. Johnson in 1971 and is headquartered in 1971 and is headquartered in Saxonburg, PA.