II-VI, Inc. engages in the development, refinement, manufacturing, and marketing of engineered materials and opto-electronic components and products for precision in the field of industrial, optical communications, military, semiconductor, medical and life science applications. It operates through the following segments: Laser Solutions, Photonics, and Performance Products. Read More The Laser Solutions segment designs, manufactures and markets optical and electro-optical components and materials sold under the company infrared brand name. The Photonics segmeng manufactures crystal materials, optics, microchip lasers and optoelectronic modules for use in optical communication 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 military, 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.