Hamamatsu Photonics K.K. manufactures and sells photomultiplier tubes, imaging devices, light sources, opto-semiconductors, and imaging and analyzing systems in Japan and internationally. It operates through four segments: Electron Tube, Opto-Semiconductor, Imaging and Measurement Instruments, Laser, and Other. The company offers optical sensors, including photodiodes, avalanche photodiodes, photo integrated circuits, multi-pixel photon counters, single-photon avalanche diodes, photomultiplier tubes, phototubes, image sensors, spectrometers, spectrum sensors, infrared detectors, ultraviolet and flame sensors, radiation and x-ray sensors, electron and ion sensors, distance and position sensors, and terahertz sensors. It also provides optical components, such as optical blocks, fiber optic plates, FAC lenses, collimating capillary lenses, capillary plates, flow cells, LCOS-SLM optical phase modulators, image splitting optics, MEMS mirrors, terahertz wave plates, porous transfer plates, photonic crystal fibers, and QPM optical modules. In addition, the company offers cameras, comprising qCMOS, CMOS, sCMOS, InGaAs, TDI, board-level CMOS, board-level TDI, x-ray line scan, x-ray TDI, x-ray CMOS cameras, as well as high-resolution x-ray imaging systems, and software. Further, it provides light and radiation sources, such as LEDs, lamps, lamp modules and units, UV-LED light sources, excimer lamp light sources, microfocus x-ray sources, soft x-ray sources, extreme ultraviolet and soft x-ray sources, laser-driven tunable light sources, laser-driven light sources, chromatiq spectral engines; lasers, including semiconductor, applied products of semiconductor, solid-state lasers, and laser-related products; and manufacturing support, semiconductor manufacturing support systems, photometry, life science, and medical systems. The company was formerly known as Hamamatsu TV Co., Ltd. Hamamatsu Photonics K.K. was incorporated in 1953 and is headquartered in Hamamatsu, Japan.