Photomultiplier tubes are being used as high-speed, high-sensitivity sensors in a broad spectrum of fields ranging from medical and academic to industrial fields. These tubes are also providing optimum performance in special applications as well. Already renowned for our development of products designed to receive light, we are now developing innovative products to emit light as well, such as various types of light sources. Applying our own proprietary knowhow in fields ranging from vacuum technology to fundamental and manufacturing technology, we are proud to offer flexible product development customized to our users' needs. Our products incorporate a finely-tuned balance of the optimum sensitivity, output, stability, and lifetime to be used for various purposes.