GSI Group Inc. designs, develops, manufactures and sells precision photonic and motion control components and subsystems. The Company offers its products to original equipment manufacturers (OEMs) in the medical equipment and industrial technology markets. Its segments include Laser Products, Vision Technologies and Precision Motion. The Laser Products segment designs, manufactures and markets photonics-based solutions, including carbon dioxide laser sources, laser scanning and laser beam delivery products. The Vision Technologies segment designs, manufactures and markets a range of medical grade technologies, including visualization solutions, imaging informatics products, radio frequency identification (RFID) technologies, thermal printers, and light and color measurement instrumentation. The Precision Motion segment designs, manufactures and markets optical encoders, precision motors and other motion control technology, air bearing spindles and precision machined components.