Harmonic Drive Systems Inc. produces and sells precision control equipment and components worldwide. It offers speed reducers, rotary actuators, linear actuators, AC servo motors, and other mechatronics products, as well as HarmonicDrive, a speed reducer for space. The company also provides high-precision planetary-gear speed reducers under the AccuDrive and Harmonic Planetary brands; galvano mirror type optical scanners under the BEAM SERVO brand; and incremental encoders under the Harmonicsyn name. Its products are used in industrial robots, semiconductor manufacturing equipment, and other systems. Harmonic Drive Systems Inc. was founded in 1970 and is headquartered in Tokyo, Japan.