AnnualReport2016
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DIVISIONAL REVIEWElectron Tube Division (Electron Tube Segment)For over 60 years, Hamamatsu Photonics has developed and manufactured photomultiplier tubes (PMTs). This technology continues to evolve today at the Electron Tube Division, one of the company’s primary manufacturing divisions. The Electron Tube Division also develops and manufactures a variety of products for use in medical applications, chemical analysis, measurement, industrial testing, and academic research. These products include PMTs, electron multipliers, microchannel plates, image intensiers, X-ray products, and a wide variety of light sources. In scal year 2016, sales of these products accounted for 37.4% of the company’s total revenue.Sales of PMTsPhotomultiplier tubes (PMT) for laser scanning microscopes used in the eld of biotechnology, which are highly regarded for their excellent sensitivity, enjoyed higher sales. However, sales for oil-well logging applications in the measuring instrument eld contracted sharply because of the prolonged slump in oileld investment, and sales in the medical eld for inspection and monitoring systems such as blood analyzers, which were affected by inventory adjustments by customers, slipped lower as well. As a result, net sales of photomultiplier tubes (PMT) declined.Sales of imaging devices and light sourcesIn imaging devices and light sources, sales of deuterium lamps rose as the demand for environmental analysis in Asia increased. However, sales in the medical eld of scintillators for converting X-rays into visible light moved lower. In addition, sales in the industrial eld of our Stealth Dicing Engine for high-speed, high-quality silicon wafer dicing and of UV-LED light sources for highly accurate bonding of large-scale panels were off as well, affected by constraints on capital investment. Net sales of imaging devices and light sources decreased as a result.In total, the Electron Tube business comprised of photomultiplier tubes (PMT) and imaging devices and light sources closed the scal year 2016 with net sales of JPY 45,608 million, down by 6.4% from the previous year.Photomultiplier tubes and the modules for Laser scanning microscopeDeuterium lamps6

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