Japan Hamamatsu Photonics Co., Ltd. (hereinafter referred to as Hamamatsu Corporation) was established in 1953, is a light science, light industry large multinational companies, products are photomultiplier, optoelectronic semiconductors, light sources, laser products, optical detection science and medical equipment and so on. Products used in medical biology, high-energy physics, space exploration, precision analysis and other industries.