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AssigneeCanon Kabushiki Kaisha
InventorsYasushi Shimizu, Takanori Matsuda, Shinya Koyama, Makoto Kubota, Akira Uebayashi, Kanako Oshima
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A vibration device comprises a vibrating member having at least n (n≥2) piezoelectric elements arranged on a vibrating plate, each of the piezoelectric elements being formed by using a lead-free piezoelectric material and electrodes, wherein if the temperature that maximizes the piezoelectric constant of the piezoelectric material of each of the n piezoelectric elements is expressed as Tm (m being a natural number between 1 and n), at least two of T1 through Tn differ from each other.
A vibration device comprising a vibrating member having at least n (n≥2) piezoelectric elements arranged on a vibrating plate, each of the piezoelectric elements being formed by using a lead-free piezoelectric material and electrodes, wherein,
Dependencies are inferred from the claim text.