Invention Grant
US09052499B2 Vibrating apparatus, driving apparatus having the vibrating apparatus, and optical device 有权
振动装置,具有振动装置的驱动装置和光学装置

Vibrating apparatus, driving apparatus having the vibrating apparatus, and optical device
Abstract:
A vibration apparatus includes a vibrating body that includes a piezoelectric material having a lead content of less than 1000 ppm, and has an electromechanical energy converting element having an electrode; and a control unit that applies at least two driving voltages to the electromechanical energy converting element, and generates a combined vibration by providing a time phase difference to the vibrating body and generating multiple stable waves having mutually different orders; wherein the control unit changes at least one of the voltage amplitude ratio and time phase difference of at least two driving voltages, so as to change the amplitude distribution of the combined vibration.
Information query
Patent Agency Ranking
0/0