| 摘要 |
PURPOSE: An ultrasonic motor for an interchangeable lens is provided to reduce noises and dust by a roller member rolling on a flange of a base in the rotation of a first rim part. CONSTITUTION: A piezoelectric device(20) vibrates when high frequency power is applied. A stator vibrates by contacting with the piezoelectric device. A rotor is pressurized to the stator and rotates by the vibration of the stator. A link part(50) transmits the rotation force of the rotor to a barrel of a camera lens. An elastic member elastically supports the stator to closely adhere the rotor to the stator. A first rim part(51) is rotatably arranged on the outer side of the base and is combined with the barrel. A plurality of roller members(53) is mounted on the outer side of the first rim part. |
