DIVISIONAL REVIEWElectron Tube Division (Electron Tube Segment)For over 60 years, Hamamatsu Photonics has developed and manufactured photomultiplier tubes (PMT). 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 PMT, electron multipliers, microchannel plates, image intensiers, X-ray products, and a wide variety of light sources. In scal year 2018, sales of these products accounted for 38.9% of net sales.Sales of PMTIn the medical eld, sales of PMT for nuclear medicine testing applications such as Positron Emission Tomography (PET) contracted. On the other hand, sales of products for inspection and monitoring systems such as blood analyzers increased both inside and outside Japan, thanks to their strong reputation for their high sensitivity, low-noise and high-speed operations. In addition, in the measuring instrument eld, sales for oil-well logging devices that offer superior ruggedness to withstand against harsh work conditions such as high temperatures, shocks and vibrations were higher, thanks to the recovery in oileld investment. As a result, net sales of PMT increased.Sales of imaging devices and light sourcesIn imaging devices and light sources, sales in the industrial eld of microfocus X-ray sources for non-destructive testing devices continued to achieve strong sales, thanks to their strong reputation for high-denition, high reliability and excellent stability. In addition, sales in the medical eld of scintillators for converting X-rays into visible light increased. Further, sales of light sources for semiconductor inspection equipment grew(*1), and as a result, net sales of imaging devices and light sources increased.In total, the Electron Tube business comprised of PMT and imaging devices and light sources closed the scal year 2018 with net sales of JPY 56,184 million, up by 15.3% from the previous year.(*1)Due to the contribution of Energetiq Technology Inc., whose shares were fully acquired by a subsidiary in the United States (Photonics Management Corp.) through a merger during this scal year. Energetiq Technology Inc. is engaged in the development, manufacture and sale of light sources for semiconductor inspection equipment, and dominates the market with its Laser Driven Light Sources, a type of light source with high brightness. It is also the only company in the world that offers products based on Extreme Ultraviolet light sources with shorter wavelengths.PMT for oil-well logging devicesExample using a Microfocus X-ray sourceMicrofocus X-ray sourceConveyorX-ray line sensor camera, X-ray TDI camera, etc.6


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