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Hamamatsu Photonics, KK was founded in 1953 and is headquartered in Hamamatsu City, Japan. It has production facilities, offices and associated companies in Asia, Europe, and North America. The company is divided into 7 subsidiaries which are geographically-based and non-competitive.

The primary production and research facilities are located in Japan, and house the company's four product divisions: Solid State, Electron Tube, Systems, the Laser Group; and the research facilities.

  • Solid State makes products such as Photodiodes, Photo ICs, PSDs, GbPs devices, IR detectors and image sensors.
  • Electron Tube Center, produces PMTs, lamps, fibre optic plates to sensor modules, PET scanners and UV spotlights.
  • The Systems group creates a wide range of imaging systems used in fields ranging from semiconductor and biomedical to optical measurement and factory automation.
  • The Laser Group produces CW semiconductor lasers, pulsed lasers, and high-power semiconductor lasers.