Hamamatsu Photonics K.K.(浜松ホトニクス株式会社,Hamamatsu Hotonikusu Kabushiki-gaisha?) (TYO: 6965) is a Japanese manufacturer of optical sensors (including photomultiplier tubes), electric light sources, and other optical devices and their applied instruments. The company was founded in 1953. It has several overseas affiliated companies.
^Hermann Simon mentioned this company in his correspondent Book as an example of a "Hidden Champion" (Simon, Hermann: Hidden Champions of the 21st Century : Success Strategies of unknown World Market Leaders. London: Springer, 2009.- ISBN 978-0-387-98147-5.)