SEIKOH GIKEN Co., Ltd. designs, manufactures, and sells optical components and lenses, as well as radio over fiber products, in Japan and internationally. Its offerings include precision and optical disc molds, injection molded components, and optical communication components such as connectors, ferrules, adaptors, jumper cables, optical packaging parts, attenuators, crimping tools, and uniboot connectors. The company also provides optical manufacturing equipment, interferometers, endface cleaners, field use equipment, lenses, isotropic optical e-field sensor heads and optical probe heads, optical probes for malfunction noise, and X-ray CT scanners, along with non-destructive testing services. Incorporated in 1972, it is headquartered in Matsudo, Japan.