Vibrationsvorrichtung, Ansteuervorrichtung mit der Vibrationsvorrichtung und optische Vorrichtung

Details

Veröffentlichungs-Nr.

EP2642545

Aktenzeichen

EP13157183

Anmeldetag

28. Februar 2013

Veröffentlichung

31. Dezember 2014

Rechtsraum

EP

IPC

H01L41/43H01L41/04H01L41/09H01L41/187H02N2/00H04N5/225G02B27/00H04N5/217

Abstract

A vibration apparatus includes a vibrating body (3) that includes a piezoelectric material having a lead content of less than 1000 ppm, and has electromechanical energy converting means (2, 2a, 2b) having an electrode (9); and control means (100) that apply at least two driving voltages to the electromechanical energy converting means (2, 2a, 2b), and generates a combined vibration by providing a time phase difference to the vibrating body (3) and generating multiple stable waves having mutually different orders; wherein the control means (100) change 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.

Anmelder

Firma

Canon Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete